Merge branch 'master' into zlp-hs-on-fs

81 files changed, 2128 insertions, 429 deletions

diff --git a/examples/device/CMakeLists.txt b/examples/device/CMakeLists.txt
index 660df67cb..7173f455e 100644
--- a/examples/device/CMakeLists.txt
+++ b/examples/device/CMakeLists.txt
@@ -30,6 +30,7 @@ set(EXAMPLE_LIST
   msc_dual_lun
   mtp
   net_lwip_webserver
+  printer_to_cdc
   uac2_headset
   uac2_speaker_fb
   usbtmc
diff --git a/examples/device/audio_4_channel_mic/src/main.c b/examples/device/audio_4_channel_mic/src/main.c
index 5767c7453..c9c6dd46c 100644
--- a/examples/device/audio_4_channel_mic/src/main.c
+++ b/examples/device/audio_4_channel_mic/src/main.c
@@ -155,7 +155,7 @@ void tud_resume_cb(void) {
 // In a real application, this would be replaced with actual I2S receive callback.
 void audio_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) {
     return; // not enough time
   }
@@ -408,7 +408,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/audio_4_channel_mic_freertos/skip.txt b/examples/device/audio_4_channel_mic_freertos/skip.txt
index 4c2780096..db01347ed 100644
--- a/examples/device/audio_4_channel_mic_freertos/skip.txt
+++ b/examples/device/audio_4_channel_mic_freertos/skip.txt
@@ -9,7 +9,6 @@ mcu:MKL25ZXX
 mcu:MSP430x5xx
 mcu:RP2040
 mcu:SAMD11
-mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 mcu:RAXXX
 mcu:STM32L0
diff --git a/examples/device/audio_test/src/main.c b/examples/device/audio_test/src/main.c
index 2441eefbc..876a41d06 100644
--- a/examples/device/audio_test/src/main.c
+++ b/examples/device/audio_test/src/main.c
@@ -138,7 +138,7 @@ void tud_resume_cb(void) {
 // In a real application, this would be replaced with actual I2S receive callback.
 void audio_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) {
     return; // not enough time
   }
@@ -402,7 +402,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/audio_test_freertos/skip.txt b/examples/device/audio_test_freertos/skip.txt
index 2da7808e7..7463aa86a 100644
--- a/examples/device/audio_test_freertos/skip.txt
+++ b/examples/device/audio_test_freertos/skip.txt
@@ -9,7 +9,6 @@ mcu:MKL25ZXX
 mcu:MSP430x5xx
 mcu:RP2040
 mcu:SAMD11
-mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 mcu:RAXXX
 family:broadcom_32bit
diff --git a/examples/device/audio_test_multi_rate/src/main.c b/examples/device/audio_test_multi_rate/src/main.c
index baeec870f..952176997 100644
--- a/examples/device/audio_test_multi_rate/src/main.c
+++ b/examples/device/audio_test_multi_rate/src/main.c
@@ -146,7 +146,7 @@ void tud_resume_cb(void) {
 // In a real application, this would be replaced with actual I2S receive callback.
 void audio_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) {
     return; // not enough time
   }
@@ -614,7 +614,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/board_test/src/main.c b/examples/device/board_test/src/main.c
index ee0829e5b..71e7e1da7 100644
--- a/examples/device/board_test/src/main.c
+++ b/examples/device/board_test/src/main.c
@@ -39,11 +39,35 @@ enum {
 
 #define HELLO_STR   "Hello from TinyUSB\r\n"
 
-int main(void) {
-  board_init();
-  board_led_write(true);
+// board test example does not use both device and host stack
+#if CFG_TUSB_OS != OPT_OS_NONE
+uint32_t tusb_time_millis_api(void) {
+  return osal_time_millis();
+}
+
+void tusb_time_delay_ms_api(uint32_t ms) {
+  osal_task_delay(ms);
+}
+#endif
+
+//--------------------------------------------------------------------+
+//
+//--------------------------------------------------------------------+
+
+// Task parameter type: ULONG for ThreadX, void* for FreeRTOS and noos
+#if CFG_TUSB_OS == OPT_OS_THREADX
+  #define RTOS_PARAM ULONG
+#elif CFG_TUSB_OS == OPT_OS_FREERTOS
+  #define RTOS_PARAM void*
+  static void freertos_init(void);
+#else
+  #define RTOS_PARAM void*
+#endif
 
+static void board_test_loop(RTOS_PARAM param) {
+  (void) param;
   uint32_t start_ms = 0;
+  (void) start_ms;
   bool led_state = false;
 
   while (1) {
@@ -58,26 +82,94 @@ int main(void) {
     }
 
     // Blink and print every interval ms
-    if (!(board_millis() - start_ms < interval_ms)) {
-      start_ms = board_millis();
-
-      if (ch < 0) {
-        // skip if echoing
-        printf(HELLO_STR);
+    #if CFG_TUSB_OS == OPT_OS_FREERTOS
+    vTaskDelay(interval_ms / portTICK_PERIOD_MS);
+    #elif CFG_TUSB_OS == OPT_OS_THREADX
+    tx_thread_sleep(_osal_ms2tick(interval_ms));
+    #else
+    if (tusb_time_millis_api() - start_ms < interval_ms) {
+      continue; // not enough time
+    }
+    #endif
+    start_ms = tusb_time_millis_api();
 
-        #ifndef LOGGER_UART
-        board_uart_write(HELLO_STR, sizeof(HELLO_STR)-1);
-        #endif
-      }
+    if (ch < 0) {
+      // skip if echoing
+      printf(HELLO_STR);
 
-      board_led_write(led_state);
-      led_state = !led_state; // toggle
+      #ifndef LOGGER_UART
+      board_uart_write(HELLO_STR, sizeof(HELLO_STR)-1);
+      #endif
     }
+
+    board_led_write(led_state);
+    led_state = !led_state; // toggle
   }
 }
 
+int main(void) {
+  board_init();
+  board_led_write(true);
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+  freertos_init();
+#elif CFG_TUSB_OS == OPT_OS_THREADX
+  tx_kernel_enter();
+#else
+  board_test_loop(NULL);
+#endif
+
+  return 0;
+}
+
 #ifdef ESP_PLATFORM
 void app_main(void) {
   main();
 }
 #endif
+
+//--------------------------------------------------------------------+
+// FreeRTOS
+//--------------------------------------------------------------------+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+
+#ifdef ESP_PLATFORM
+#define MAIN_STACK_SIZE   4096
+#else
+#define MAIN_STACK_SIZE   512
+#endif
+
+#if configSUPPORT_STATIC_ALLOCATION
+static StackType_t  _main_stack[MAIN_STACK_SIZE];
+static StaticTask_t _main_taskdef;
+#endif
+
+static void freertos_init(void) {
+  #if configSUPPORT_STATIC_ALLOCATION
+  xTaskCreateStatic(board_test_loop, "main", MAIN_STACK_SIZE, NULL, 1, _main_stack, &_main_taskdef);
+  #else
+  xTaskCreate(board_test_loop, "main", MAIN_STACK_SIZE, NULL, 1, NULL);
+  #endif
+
+  #ifndef ESP_PLATFORM
+  vTaskStartScheduler();
+  #endif
+}
+
+//--------------------------------------------------------------------+
+// ThreadX
+//--------------------------------------------------------------------+
+#elif CFG_TUSB_OS == OPT_OS_THREADX
+
+#define MAIN_TASK_STACK_SIZE  1024
+static TX_THREAD _main_thread;
+static ULONG _main_thread_stack[MAIN_TASK_STACK_SIZE / sizeof(ULONG)];
+
+void tx_application_define(void *first_unused_memory) {
+  (void) first_unused_memory;
+  static CHAR main_thread_name[] = "main";
+  tx_thread_create(&_main_thread, main_thread_name, board_test_loop, 0,
+                   _main_thread_stack, MAIN_TASK_STACK_SIZE,
+                   1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
+}
+#endif
diff --git a/examples/device/cdc_dual_ports/src/main.c b/examples/device/cdc_dual_ports/src/main.c
index 5ccb06a8a..6f918218d 100644
--- a/examples/device/cdc_dual_ports/src/main.c
+++ b/examples/device/cdc_dual_ports/src/main.c
@@ -157,7 +157,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/cdc_dual_ports/src/tusb_config.h b/examples/device/cdc_dual_ports/src/tusb_config.h
index 0da4032a7..710c01ee2 100644
--- a/examples/device/cdc_dual_ports/src/tusb_config.h
+++ b/examples/device/cdc_dual_ports/src/tusb_config.h
@@ -104,6 +104,8 @@
 #define CFG_TUD_CDC_TX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 // CDC Endpoint transfer buffer size, more is faster
+// Leave it as default size (512 for HS, 64 for FS) unless your host application
+// is able to send ZLP (Zero Length Packet) to terminate transfer !
 #define CFG_TUD_CDC_EP_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 #ifdef __cplusplus
diff --git a/examples/device/cdc_msc/src/main.c b/examples/device/cdc_msc/src/main.c
index 06a4f732f..b00a0e3a9 100644
--- a/examples/device/cdc_msc/src/main.c
+++ b/examples/device/cdc_msc/src/main.c
@@ -160,7 +160,7 @@ void led_blinking_task(void) {
 
   if (blink_enable) {
     // Blink every interval ms
-    if (board_millis() - start_ms < blink_interval_ms) {
+    if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
       return; // not enough time
     }
     start_ms += blink_interval_ms;
diff --git a/examples/device/cdc_msc/src/msc_disk.c b/examples/device/cdc_msc/src/msc_disk.c
index e091c2985..017acd039 100644
--- a/examples/device/cdc_msc/src/msc_disk.c
+++ b/examples/device/cdc_msc/src/msc_disk.c
@@ -238,7 +238,7 @@ int32_t tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16], void *buffer, u
   (void) buffer;
   (void) bufsize;
 
-  // currently no other commands is supported
+  // currently no other commands are supported
 
   // Set Sense = Invalid Command Operation
   (void) tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
diff --git a/examples/device/cdc_msc/src/tusb_config.h b/examples/device/cdc_msc/src/tusb_config.h
index fdb2ddf18..3f2f05f20 100644
--- a/examples/device/cdc_msc/src/tusb_config.h
+++ b/examples/device/cdc_msc/src/tusb_config.h
@@ -104,6 +104,8 @@
 #define CFG_TUD_CDC_TX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 // CDC Endpoint transfer buffer size, more is faster
+// Leave it as default size (512 for HS, 64 for FS) unless your host application
+// is able to send ZLP (Zero Length Packet) to terminate transfer !
 #define CFG_TUD_CDC_EP_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 // MSC Buffer size of Device Mass storage
diff --git a/examples/device/cdc_msc_freertos/skip.txt b/examples/device/cdc_msc_freertos/skip.txt
index d90741df7..d3a096eb0 100644
--- a/examples/device/cdc_msc_freertos/skip.txt
+++ b/examples/device/cdc_msc_freertos/skip.txt
@@ -9,7 +9,6 @@ mcu:MKL25ZXX
 mcu:MSP430x5xx
 mcu:RP2040
 mcu:SAMD11
-mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 mcu:RAXXX
 mcu:STM32L0
diff --git a/examples/device/cdc_msc_freertos/src/msc_disk.c b/examples/device/cdc_msc_freertos/src/msc_disk.c
index 29ff86281..ff918205e 100644
--- a/examples/device/cdc_msc_freertos/src/msc_disk.c
+++ b/examples/device/cdc_msc_freertos/src/msc_disk.c
@@ -324,20 +324,17 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t*
 // - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
 // - READ10 and WRITE10 has their own callbacks
 int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize) {
-  // read10 & write10 has their own callback and MUST not be handled here
+  (void) lun;
+  (void) scsi_cmd;
   (void) buffer;
   (void) bufsize;
 
-  switch (scsi_cmd[0]) {
-    default:
-      // Set Sense = Invalid Command Operation
-      tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
+  // currently no other commands are supported
 
-      // negative means error -> tinyusb could stall and/or response with failed status
-      return -1;
-  }
+  // Set Sense = Invalid Command Operation
+  (void) tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
 
-  return -1;
+  return -1; // stall/failed command request;
 }
 
 #endif
diff --git a/examples/device/cdc_msc_freertos/src/tusb_config.h b/examples/device/cdc_msc_freertos/src/tusb_config.h
index 6b1937a8d..8277b1604 100644
--- a/examples/device/cdc_msc_freertos/src/tusb_config.h
+++ b/examples/device/cdc_msc_freertos/src/tusb_config.h
@@ -111,6 +111,8 @@
 #define CFG_TUD_CDC_TX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 // CDC Endpoint transfer buffer size, more is faster
+// Leave it as default size (512 for HS, 64 for FS) unless your host application
+// is able to send ZLP (Zero Length Packet) to terminate transfer !
 #define CFG_TUD_CDC_EP_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 // MSC Buffer size of Device Mass storage
diff --git a/examples/device/cdc_uac2/src/main.c b/examples/device/cdc_uac2/src/main.c
index 22c462be7..cb7b3a142 100644
--- a/examples/device/cdc_uac2/src/main.c
+++ b/examples/device/cdc_uac2/src/main.c
@@ -65,8 +65,6 @@ int main(void)
     // printf("Hello, world!\r\n");
 #endif
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/cdc_uac2/src/tusb_config.h b/examples/device/cdc_uac2/src/tusb_config.h
index b7ece8b7c..5eb2e8f74 100644
--- a/examples/device/cdc_uac2/src/tusb_config.h
+++ b/examples/device/cdc_uac2/src/tusb_config.h
@@ -160,6 +160,8 @@ extern "C" {
 #define CFG_TUD_CDC_TX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 // CDC Endpoint transfer buffer size, more is faster
+// Leave it as default size (512 for HS, 64 for FS) unless your host application
+// is able to send ZLP (Zero Length Packet) to terminate transfer !
 #define CFG_TUD_CDC_EP_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
 
 #ifdef __cplusplus
diff --git a/examples/device/cdc_uac2/src/uac2_app.c b/examples/device/cdc_uac2/src/uac2_app.c
index 73a262d0c..7760c402b 100644
--- a/examples/device/cdc_uac2/src/uac2_app.c
+++ b/examples/device/cdc_uac2/src/uac2_app.c
@@ -66,7 +66,7 @@ uint8_t current_resolution;
 // In a real application, this would be replaced with actual I2S send/receive callback.
 void audio_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) {
     return; // not enough time
   }
@@ -303,7 +303,7 @@ void led_blinking_task(void)
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return;
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/dfu/src/main.c b/examples/device/dfu/src/main.c
index 77632bf1a..fb3c22630 100644
--- a/examples/device/dfu/src/main.c
+++ b/examples/device/dfu/src/main.c
@@ -199,7 +199,7 @@ void led_blinking_task(void) {
   static bool     led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/dfu_runtime/src/main.c b/examples/device/dfu_runtime/src/main.c
index 5de651bcd..6f412e8de 100644
--- a/examples/device/dfu_runtime/src/main.c
+++ b/examples/device/dfu_runtime/src/main.c
@@ -132,7 +132,7 @@ void led_blinking_task(void)
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/dynamic_configuration/src/main.c b/examples/device/dynamic_configuration/src/main.c
index dac74bb7a..8ebb42f9a 100644
--- a/examples/device/dynamic_configuration/src/main.c
+++ b/examples/device/dynamic_configuration/src/main.c
@@ -170,7 +170,7 @@ void midi_task(void) {
   while( tud_midi_available() ) tud_midi_packet_read(packet);
 
   // send note every 1000 ms
-  if (board_millis() - start_ms < 286) {
+  if (tusb_time_millis_api() - start_ms < 286) {
     return; // not enough time
   }
   start_ms += 286;
@@ -209,7 +209,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return;// not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/dynamic_configuration/src/msc_disk.c b/examples/device/dynamic_configuration/src/msc_disk.c
index e95b2e197..b545e4652 100644
--- a/examples/device/dynamic_configuration/src/msc_disk.c
+++ b/examples/device/dynamic_configuration/src/msc_disk.c
@@ -215,20 +215,17 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t*
 // - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
 // - READ10 and WRITE10 has their own callbacks
 int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize) {
-  // read10 & write10 has their own callback and MUST not be handled here
+  (void) lun;
+  (void) scsi_cmd;
   (void) buffer;
   (void) bufsize;
 
-  switch (scsi_cmd[0]) {
-    default:
-      // Set Sense = Invalid Command Operation
-      tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
+  // currently no other commands are supported
 
-      // negative means error -> tinyusb could stall and/or response with failed status
-      return -1;
-  }
+  // Set Sense = Invalid Command Operation
+  (void) tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
 
-  return -1;
+  return -1; // stall/failed command request;
 }
 
 #endif
diff --git a/examples/device/hid_boot_interface/src/main.c b/examples/device/hid_boot_interface/src/main.c
index 44a91db67..7f2153ae9 100644
--- a/examples/device/hid_boot_interface/src/main.c
+++ b/examples/device/hid_boot_interface/src/main.c
@@ -67,8 +67,6 @@ int main(void) {
 
     hid_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -109,7 +107,7 @@ void hid_task(void) {
   const uint32_t  interval_ms = 10;
   static uint32_t start_ms    = 0;
 
-  if (board_millis() - start_ms < interval_ms) {
+  if (tusb_time_millis_api() - start_ms < interval_ms) {
     return; // not enough time
   }
   start_ms += interval_ms;
@@ -238,7 +236,7 @@ void led_blinking_task(void) {
   }
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/hid_composite/src/main.c b/examples/device/hid_composite/src/main.c
index 9693d564d..7c9d5af8d 100644
--- a/examples/device/hid_composite/src/main.c
+++ b/examples/device/hid_composite/src/main.c
@@ -209,7 +209,7 @@ void hid_task(void) {
   const uint32_t  interval_ms = 10;
   static uint32_t start_ms    = 0;
 
-  if (board_millis() - start_ms < interval_ms) {
+  if (tusb_time_millis_api() - start_ms < interval_ms) {
     return; // not enough time
   }
   start_ms += interval_ms;
@@ -298,7 +298,7 @@ void led_blinking_task(void) {
   }
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/device/hid_composite_freertos/skip.txt b/examples/device/hid_composite_freertos/skip.txt
index 01990a5b4..06920db67 100644
--- a/examples/device/hid_composite_freertos/skip.txt
+++ b/examples/device/hid_composite_freertos/skip.txt
@@ -9,7 +9,6 @@ mcu:MKL25ZXX
 mcu:MSP430x5xx
 mcu:RP2040
 mcu:SAMD11
-mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 mcu:RAXXX
 family:broadcom_32bit
diff --git a/examples/device/hid_generic_inout/src/main.c b/examples/device/hid_generic_inout/src/main.c
index 9837a47d9..2a6b91a8a 100644
--- a/examples/device/hid_generic_inout/src/main.c
+++ b/examples/device/hid_generic_inout/src/main.c
@@ -168,7 +168,7 @@ void led_blinking_task(void)
   static bool led_state = false;
 
   // Blink every interval ms
-  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if ( tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/device/hid_multiple_interface/src/main.c b/examples/device/hid_multiple_interface/src/main.c
index 0bccd13c1..c71a9cbad 100644
--- a/examples/device/hid_multiple_interface/src/main.c
+++ b/examples/device/hid_multiple_interface/src/main.c
@@ -120,7 +120,7 @@ void hid_task(void)
   const uint32_t interval_ms = 10;
   static uint32_t start_ms = 0;
 
-  if ( board_millis() - start_ms < interval_ms) return; // not enough time
+  if ( tusb_time_millis_api() - start_ms < interval_ms) return; // not enough time
   start_ms += interval_ms;
 
   uint32_t const btn = board_button_read();
@@ -205,7 +205,7 @@ void led_blinking_task(void)
   static bool led_state = false;
 
   // Blink every interval ms
-  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if ( tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/device/midi_test/src/main.c b/examples/device/midi_test/src/main.c
index fd58e3021..1154c1d60 100644
--- a/examples/device/midi_test/src/main.c
+++ b/examples/device/midi_test/src/main.c
@@ -134,7 +134,7 @@ void midi_task(void)
   }
 
   // send note periodically
-  if (board_millis() - start_ms < 286) {
+  if (tusb_time_millis_api() - start_ms < 286) {
     return; // not enough time
   }
   start_ms += 286;
@@ -174,7 +174,7 @@ void led_blinking_task(void)
   static bool led_state = false;
 
   // Blink every interval ms
-  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if ( tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/device/midi_test_freertos/skip.txt b/examples/device/midi_test_freertos/skip.txt
index 01990a5b4..06920db67 100644
--- a/examples/device/midi_test_freertos/skip.txt
+++ b/examples/device/midi_test_freertos/skip.txt
@@ -9,7 +9,6 @@ mcu:MKL25ZXX
 mcu:MSP430x5xx
 mcu:RP2040
 mcu:SAMD11
-mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 mcu:RAXXX
 family:broadcom_32bit
diff --git a/examples/device/msc_dual_lun/src/main.c b/examples/device/msc_dual_lun/src/main.c
index 62b1c872a..a4ade6f9b 100644
--- a/examples/device/msc_dual_lun/src/main.c
+++ b/examples/device/msc_dual_lun/src/main.c
@@ -31,7 +31,7 @@
 #include "tusb.h"
 
 //--------------------------------------------------------------------+
-// MACRO CONSTANT TYPEDEF PROTYPES
+// MACRO CONSTANT TYPEDEF PROTOTYPES
 //--------------------------------------------------------------------+
 
 /* Blink pattern
@@ -41,71 +41,177 @@
  */
 enum {
   BLINK_NOT_MOUNTED = 250,
-  BLINK_MOUNTED = 1000,
-  BLINK_SUSPENDED = 2500,
+  BLINK_MOUNTED     = 1000,
+  BLINK_SUSPENDED   = 2500,
 };
 
 static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
 
-void led_blinking_task(void);
+// Task parameter type: ULONG for ThreadX, void* for FreeRTOS and noos
+#if CFG_TUSB_OS == OPT_OS_THREADX
+  #define RTOS_PARAM ULONG
+#elif CFG_TUSB_OS == OPT_OS_FREERTOS
+  #define RTOS_PARAM void*
+  static void freertos_init(void);
+#else
+  #define RTOS_PARAM void*
+#endif
 
-/*------------- MAIN -------------*/
-int main(void) {
-  board_init();
+void led_blinking_task(RTOS_PARAM param);
 
-  // init device stack on configured roothub port
+//--------------------------------------------------------------------+
+// USB Device Task
+//--------------------------------------------------------------------+
+static void usb_device_init(void) {
   tusb_rhport_init_t dev_init = {
-    .role = TUSB_ROLE_DEVICE,
+    .role  = TUSB_ROLE_DEVICE,
     .speed = TUSB_SPEED_AUTO
   };
   tusb_init(BOARD_TUD_RHPORT, &dev_init);
-
   board_init_after_tusb();
+}
+
+#if CFG_TUSB_OS != OPT_OS_NONE && CFG_TUSB_OS != OPT_OS_PICO
+static void usb_device_task(RTOS_PARAM param) {
+  (void) param;
+  usb_device_init();
 
   while (1) {
-    tud_task(); // tinyusb device task
-    led_blinking_task();
+    tud_task();
   }
 }
+#endif
 
 //--------------------------------------------------------------------+
-// Device callbacks
+// Main
 //--------------------------------------------------------------------+
+int main(void) {
+  board_init();
 
-// Invoked when device is mounted
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+  freertos_init();
+
+#elif CFG_TUSB_OS == OPT_OS_THREADX
+  tx_kernel_enter();
+
+#else
+  // noos + pico-sdk: init USB then run polling loop
+  usb_device_init();
+
+  while (1) {
+    tud_task();
+    led_blinking_task(NULL);
+  }
+#endif
+}
+
+#ifdef ESP_PLATFORM
+void app_main(void) {
+  main();
+}
+#endif
+
+//--------------------------------------------------------------------+
+// Device callbacks
+//--------------------------------------------------------------------+
 void tud_mount_cb(void) {
   blink_interval_ms = BLINK_MOUNTED;
 }
 
-// Invoked when device is unmounted
 void tud_umount_cb(void) {
   blink_interval_ms = BLINK_NOT_MOUNTED;
 }
 
-// Invoked when usb bus is suspended
-// remote_wakeup_en : if host allow us  to perform remote wakeup
-// Within 7ms, device must draw an average of current less than 2.5 mA from bus
 void tud_suspend_cb(bool remote_wakeup_en) {
   (void) remote_wakeup_en;
   blink_interval_ms = BLINK_SUSPENDED;
 }
 
-// Invoked when usb bus is resumed
 void tud_resume_cb(void) {
   blink_interval_ms = tud_mounted() ? BLINK_MOUNTED : BLINK_NOT_MOUNTED;
 }
 
 //--------------------------------------------------------------------+
-// BLINKING TASK
+// Blinking Task
 //--------------------------------------------------------------------+
-void led_blinking_task(void) {
+void led_blinking_task(RTOS_PARAM param) {
+  (void) param;
   static uint32_t start_ms = 0;
   static bool led_state = false;
 
-  // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) return; // not enough time
-  start_ms += blink_interval_ms;
+  while (1) {
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+    vTaskDelay(blink_interval_ms / portTICK_PERIOD_MS);
+#elif CFG_TUSB_OS == OPT_OS_THREADX
+    tx_thread_sleep(_osal_ms2tick(blink_interval_ms));
+#else
+    if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
+      return; // not enough time
+    }
+#endif
+
+    start_ms += blink_interval_ms;
+    board_led_write(led_state);
+    led_state = 1 - led_state; // toggle
+  }
+}
+
+//--------------------------------------------------------------------+
+// FreeRTOS
+//--------------------------------------------------------------------+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+
+#ifdef ESP_PLATFORM
+#define USBD_STACK_SIZE   4096
+#else
+#define USBD_STACK_SIZE   (3*configMINIMAL_STACK_SIZE/2 * (CFG_TUSB_DEBUG ? 2 : 1))
+#endif
+#define BLINKY_STACK_SIZE   configMINIMAL_STACK_SIZE
 
-  board_led_write(led_state);
-  led_state = 1 - led_state; // toggle
+#if configSUPPORT_STATIC_ALLOCATION
+static StackType_t  _usb_device_stack[USBD_STACK_SIZE];
+static StaticTask_t _usb_device_taskdef;
+static StackType_t  _blinky_stack[BLINKY_STACK_SIZE];
+static StaticTask_t _blinky_taskdef;
+#endif
+
+
+static void freertos_init(void) {
+  #if configSUPPORT_STATIC_ALLOCATION
+  xTaskCreateStatic(usb_device_task,     "usbd",   USBD_STACK_SIZE,   NULL, configMAX_PRIORITIES - 1, _usb_device_stack, &_usb_device_taskdef);
+  xTaskCreateStatic(led_blinking_task,   "blinky", BLINKY_STACK_SIZE, NULL, 1,                        _blinky_stack,     &_blinky_taskdef);
+  #else
+  xTaskCreate(usb_device_task,           "usbd",   USBD_STACK_SIZE,   NULL, configMAX_PRIORITIES - 1, NULL);
+  xTaskCreate(led_blinking_task,         "blinky", BLINKY_STACK_SIZE, NULL, 1,                        NULL);
+  #endif
+  #ifndef ESP_PLATFORM
+  vTaskStartScheduler();
+  #endif
+}
+
+//--------------------------------------------------------------------+
+// ThreadX
+//--------------------------------------------------------------------+
+#elif CFG_TUSB_OS == OPT_OS_THREADX
+
+#define USBD_STACK_SIZE   4096
+#define BLINKY_STACK_SIZE 512
+
+static TX_THREAD _usb_device_thread;
+static ULONG     _usb_device_stack[USBD_STACK_SIZE / sizeof(ULONG)];
+static TX_THREAD _blinky_thread;
+static ULONG     _blinky_stack[BLINKY_STACK_SIZE / sizeof(ULONG)];
+
+void tx_application_define(void *first_unused_memory) {
+  (void) first_unused_memory;
+  static CHAR usbd_name[]   = "usbd";
+  static CHAR blinky_name[] = "blinky";
+  tx_thread_create(&_usb_device_thread, usbd_name, usb_device_task, 0,
+                   _usb_device_stack, USBD_STACK_SIZE,
+                   0, 0, TX_NO_TIME_SLICE, TX_AUTO_START);
+  tx_thread_create(&_blinky_thread, blinky_name, led_blinking_task, 0,
+                   _blinky_stack, BLINKY_STACK_SIZE,
+                   1, 1, TX_NO_TIME_SLICE, TX_AUTO_START);
 }
+
+#endif
diff --git a/examples/device/mtp/src/main.c b/examples/device/mtp/src/main.c
index 57d1535b2..6ffa435d1 100644
--- a/examples/device/mtp/src/main.c
+++ b/examples/device/mtp/src/main.c
@@ -102,7 +102,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/device/net_lwip_webserver/src/main.c b/examples/device/net_lwip_webserver/src/main.c
index 867cf2812..8bd8a8c21 100644
--- a/examples/device/net_lwip_webserver/src/main.c
+++ b/examples/device/net_lwip_webserver/src/main.c
@@ -276,8 +276,6 @@ int main(void) {
     sys_check_timeouts(); // service lwip
     handle_link_state_switch();
   }
-
-  return 0;
 }
 
 /* lwip has provision for using a mutex, when applicable */
@@ -291,5 +289,5 @@ void sys_arch_unprotect(sys_prot_t pval) {
 
 /* lwip needs a millisecond time source, and the TinyUSB board support code has one available */
 uint32_t sys_now(void) {
-  return board_millis();
+  return tusb_time_millis_api();
 }
diff --git a/examples/device/printer_to_cdc/CMakeLists.txt b/examples/device/printer_to_cdc/CMakeLists.txt
new file mode 100644
index 000000000..3c8ab3653
--- /dev/null
+++ b/examples/device/printer_to_cdc/CMakeLists.txt
@@ -0,0 +1,29 @@
+cmake_minimum_required(VERSION 3.20)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
+
+project(printer_to_cdc C CXX ASM)
+
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT_NAME} ${CMAKE_CURRENT_LIST_DIR})
+# Espressif has its own cmake build system
+if(FAMILY STREQUAL "espressif")
+  return()
+endif()
+
+add_executable(${PROJECT_NAME})
+
+# Example source
+target_sources(${PROJECT_NAME} PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c
+        ${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c
+        )
+
+# Example include
+target_include_directories(${PROJECT_NAME} PUBLIC
+        ${CMAKE_CURRENT_SOURCE_DIR}/src
+        )
+
+# Configure compilation flags and libraries for the example without RTOS.
+# See the corresponding function in hw/bsp/FAMILY/family.cmake for details.
+family_configure_device_example(${PROJECT_NAME} noos)
diff --git a/examples/device/printer_to_cdc/Makefile b/examples/device/printer_to_cdc/Makefile
new file mode 100644
index 000000000..1a4b428dc
--- /dev/null
+++ b/examples/device/printer_to_cdc/Makefile
@@ -0,0 +1,11 @@
+include ../../../hw/bsp/family_support.mk
+
+INC += \
+	src \
+
+
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(EXAMPLE_PATH)/, $(EXAMPLE_SOURCE))
+
+include ../../../hw/bsp/family_rules.mk
diff --git a/examples/device/printer_to_cdc/README.md b/examples/device/printer_to_cdc/README.md
new file mode 100644
index 000000000..ecb9a678f
--- /dev/null
+++ b/examples/device/printer_to_cdc/README.md
@@ -0,0 +1,80 @@
+#### Printer to CDC
+
+This example demonstrates a USB composite device with a Printer class interface and a CDC serial interface. Data flows bidirectionally between the two:
+
+- Data sent to the Printer (from host) is forwarded to the CDC serial port
+- Data sent to the CDC serial port (from host) is forwarded to the Printer IN endpoint
+
+This is useful for debugging printer class communication or as a reference for implementing printer class devices.
+
+#### USB Interfaces
+
+| Interface | Class | Description |
+|-----------|-------|-------------|
+| 0 | CDC ACM | Virtual serial port |
+| 2 | Printer | USB Printer (bidirectional, protocol 2) |
+
+#### How to Test
+
+The device exposes two endpoints on the host:
+- `/dev/ttyACM0` (CDC serial port)
+- `/dev/usb/lp0` (USB printer)
+
+Note: the actual device numbers may vary depending on your system.
+
+**Prerequisites (Linux):**
+
+```bash
+# Load the USB printer kernel module if not already loaded
+sudo modprobe usblp
+
+# Check devices exist
+ls /dev/ttyACM* /dev/usb/lp*
+```
+
+**Test Printer to CDC (host writes to printer, reads from CDC):**
+
+```bash
+# Terminal 1: read from CDC
+cat /dev/ttyACM0
+
+# Terminal 2: write to printer
+echo "hello from printer" > /dev/usb/lp0
+# "hello from printer" appears in Terminal 1
+```
+
+**Test CDC to Printer (host writes to CDC, reads from printer):**
+
+```bash
+# Terminal 1: read from printer IN endpoint
+cat /dev/usb/lp0
+
+# Terminal 2: write to CDC
+echo "hello from cdc" > /dev/ttyACM0
+# "hello from cdc" appears in Terminal 1
+```
+
+**Interactive bidirectional test:**
+
+```bash
+# Terminal 1: open CDC serial port
+minicom -D /dev/ttyACM0
+
+# Terminal 2: send to printer
+echo "tinyusb print example" > /dev/usb/lp0
+# Text appears in minicom. Type in minicom to send data back through printer TX.
+```
+
+#### IEEE 1284 Device ID
+
+The device responds to GET_DEVICE_ID requests with:
+
+```
+MFG:TinyUSB;MDL:Printer to CDC;CMD:PS;CLS:PRINTER;
+```
+
+Verify with:
+
+```bash
+cat /sys/class/usbmisc/lp0/device/ieee1284_id
+```
diff --git a/examples/device/printer_to_cdc/src/main.c b/examples/device/printer_to_cdc/src/main.c
new file mode 100644
index 000000000..ffaf709b4
--- /dev/null
+++ b/examples/device/printer_to_cdc/src/main.c
@@ -0,0 +1,117 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2026 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+/* This example demonstrates a USB Printer + CDC composite device.
+ * Data received on the Printer interface is forwarded to the CDC serial port,
+ * and data received on the CDC serial port is forwarded back to the Printer interface.
+ *
+ * To test:
+ *   1. Flash the device
+ *   2. Open a serial terminal on the CDC port (e.g. /dev/ttyACM0)
+ *   3. Send data to the printer: echo "hello" > /dev/usb/lp0
+ *   4. The data appears on the CDC serial terminal
+ *   5. Type in the serial terminal to send data back through the printer TX
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "bsp/board_api.h"
+#include "tusb.h"
+
+#include "usb_descriptors.h"
+
+// -------------------------------------------------------------------+
+// Tasks
+// -------------------------------------------------------------------+
+
+// Forward data from Printer RX to CDC TX
+static void printer_to_cdc_task(void) {
+  uint32_t avail = tud_printer_read_available();
+  if (avail == 0 || !tud_cdc_write_available()) {
+    return;
+  }
+
+  uint8_t buf[64];
+  uint32_t count = tud_printer_read(buf, TU_MIN(sizeof(buf), tud_cdc_write_available()));
+  if (count > 0) {
+    tud_cdc_write(buf, count);
+    tud_cdc_write_flush();
+  }
+}
+
+// Forward data from CDC RX to Printer TX
+static void cdc_to_printer_task(void) {
+  uint32_t avail = tud_printer_write_available();
+  if (tud_cdc_available() == 0 || avail == 0) {
+    return;
+  }
+
+  uint8_t buf[64];
+  uint32_t count = tud_cdc_read(buf, TU_MIN(sizeof(buf), avail));
+  if (count > 0) {
+    tud_printer_write(buf, count);
+    tud_printer_write_flush();
+  }
+}
+
+int main(void) {
+  board_init();
+  // init device stack on configured roothub port
+  tusb_rhport_init_t dev_init = {.role = TUSB_ROLE_DEVICE, .speed = TUSB_SPEED_AUTO};
+  tusb_init(BOARD_TUD_RHPORT, &dev_init);
+  board_init_after_tusb();
+
+  while (1) {
+    tud_task();             // tinyusb device task
+    printer_to_cdc_task();  // forward printer data to CDC
+    cdc_to_printer_task();  // forward CDC data to printer
+  }
+}
+
+//--------------------------------------------------------------------+
+// Printer callbacks
+//--------------------------------------------------------------------+
+
+void tud_printer_rx_cb(uint8_t itf) {
+  (void)itf;
+}
+
+// IEEE 1284 Device ID: first 2 bytes are big-endian total length (including the 2 length bytes).
+// The rest is the Device ID string using standard abbreviated keys.
+static const char printer_device_id[] =
+  "\x00\x34" // total length = 52 = 0x0034 (big-endian)
+  "MFG:TinyUSB;"
+  "MDL:Printer to CDC;"
+  "CMD:PS;"
+  "CLS:PRINTER;";
+
+TU_VERIFY_STATIC(sizeof(printer_device_id) - 1 == 52, "device ID length mismatch");
+
+uint8_t const *tud_printer_get_device_id_cb(uint8_t itf) {
+  (void)itf;
+  return (uint8_t const *)printer_device_id;
+}
diff --git a/examples/device/printer_to_cdc/src/tusb_config.h b/examples/device/printer_to_cdc/src/tusb_config.h
new file mode 100644
index 000000000..c38e8e1ee
--- /dev/null
+++ b/examples/device/printer_to_cdc/src/tusb_config.h
@@ -0,0 +1,117 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2026 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#ifndef _TUSB_CONFIG_H_
+#define _TUSB_CONFIG_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// Board Specific Configuration
+//--------------------------------------------------------------------+
+
+// RHPort number used for device can be defined by board.mk, default to port 0
+#ifndef BOARD_TUD_RHPORT
+  #define BOARD_TUD_RHPORT 0
+#endif
+
+// RHPort max operational speed can defined by board.mk
+#ifndef BOARD_TUD_MAX_SPEED
+  #define BOARD_TUD_MAX_SPEED OPT_MODE_DEFAULT_SPEED
+#endif
+
+//--------------------------------------------------------------------
+// COMMON CONFIGURATION
+//--------------------------------------------------------------------
+
+// defined by compiler flags for flexibility
+#ifndef CFG_TUSB_MCU
+  #error CFG_TUSB_MCU must be defined
+#endif
+
+#ifndef CFG_TUSB_OS
+  #define CFG_TUSB_OS OPT_OS_NONE
+#endif
+
+#ifndef CFG_TUSB_DEBUG
+  #define CFG_TUSB_DEBUG 0
+#endif
+
+// Enable Device stack
+#define CFG_TUD_ENABLED 1
+
+// Default is max speed that hardware controller could support with on-chip PHY
+#define CFG_TUD_MAX_SPEED BOARD_TUD_MAX_SPEED
+
+/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
+ * Tinyusb use follows macros to declare transferring memory so that they can be put
+ * into those specific section.
+ * e.g
+ * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
+ * - CFG_TUSB_MEM_ALIGN   : __attribute__ ((aligned(4)))
+ */
+#ifndef CFG_TUSB_MEM_SECTION
+  #define CFG_TUSB_MEM_SECTION
+#endif
+
+#ifndef CFG_TUSB_MEM_ALIGN
+  #define CFG_TUSB_MEM_ALIGN __attribute__((aligned(4)))
+#endif
+
+//--------------------------------------------------------------------
+// DEVICE CONFIGURATION
+//--------------------------------------------------------------------
+
+#ifndef CFG_TUD_ENDPOINT0_SIZE
+  #define CFG_TUD_ENDPOINT0_SIZE 64
+#endif
+
+//------------- CLASS -------------//
+#define CFG_TUD_HID     0
+#define CFG_TUD_CDC     1
+#define CFG_TUD_MSC     0
+#define CFG_TUD_MIDI    0
+#define CFG_TUD_VENDOR  0
+#define CFG_TUD_PRINTER 1
+
+// CDC FIFO size of TX and RX
+#define CFG_TUD_CDC_RX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
+#define CFG_TUD_CDC_TX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+// CDC Endpoint transfer buffer size
+#define CFG_TUD_CDC_EP_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+// Printer buffer sizes
+#define CFG_TUD_PRINTER_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
+#define CFG_TUD_PRINTER_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
+#define CFG_TUD_PRINTER_EP_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TUSB_CONFIG_H_ */
diff --git a/examples/device/printer_to_cdc/src/usb_descriptors.c b/examples/device/printer_to_cdc/src/usb_descriptors.c
new file mode 100644
index 000000000..30d309ed4
--- /dev/null
+++ b/examples/device/printer_to_cdc/src/usb_descriptors.c
@@ -0,0 +1,208 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2026 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#include "bsp/board_api.h"
+#include "tusb.h"
+
+#include "usb_descriptors.h"
+
+#define USB_VID   0xCafe
+#define USB_PID   0x4005
+#define USB_BCD   0x0200
+
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
+static tusb_desc_device_t const desc_device = {
+  .bLength            = sizeof(tusb_desc_device_t),
+  .bDescriptorType    = TUSB_DESC_DEVICE,
+  .bcdUSB             = USB_BCD,
+
+  // Use Interface Association Descriptor (IAD) for CDC
+  // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
+  .bDeviceClass       = TUSB_CLASS_MISC,
+  .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
+  .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+  .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
+
+  .idVendor           = USB_VID,
+  .idProduct          = USB_PID,
+  .bcdDevice          = 0x0100,
+
+  .iManufacturer      = 0x01,
+  .iProduct           = 0x02,
+  .iSerialNumber      = 0x03,
+
+  .bNumConfigurations = 0x01
+};
+
+uint8_t const *tud_descriptor_device_cb(void) {
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
+// Endpoint numbers
+#if defined(TUD_ENDPOINT_ONE_DIRECTION_ONLY)
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x83
+  #define EPNUM_PRINTER_OUT 0x04
+  #define EPNUM_PRINTER_IN  0x85
+#else
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x82
+  #define EPNUM_PRINTER_OUT 0x03
+  #define EPNUM_PRINTER_IN  0x83
+#endif
+
+// full speed configuration
+static uint8_t const desc_fs_configuration[] = {
+  // Config number, interface count, string index, total length, attribute, power in mA
+  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
+
+  // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 16, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
+
+  // Interface number, string index, EP Bulk Out address, EP Bulk In address, EP size
+  TUD_PRINTER_DESCRIPTOR(ITF_NUM_PRINTER, 5, EPNUM_PRINTER_OUT, EPNUM_PRINTER_IN, 64),
+};
+
+#if TUD_OPT_HIGH_SPEED
+// high speed configuration
+static uint8_t const desc_hs_configuration[] = {
+  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
+
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 16, EPNUM_CDC_OUT, EPNUM_CDC_IN, 512),
+
+  TUD_PRINTER_DESCRIPTOR(ITF_NUM_PRINTER, 5, EPNUM_PRINTER_OUT, EPNUM_PRINTER_IN, 512),
+};
+
+// other speed configuration
+static uint8_t desc_other_speed_config[CONFIG_TOTAL_LEN];
+
+// device qualifier is mostly similar to device descriptor since we don't change configuration based on speed
+static tusb_desc_device_qualifier_t const desc_device_qualifier = {
+  .bLength            = sizeof(tusb_desc_device_qualifier_t),
+  .bDescriptorType    = TUSB_DESC_DEVICE_QUALIFIER,
+  .bcdUSB             = USB_BCD,
+
+  .bDeviceClass       = TUSB_CLASS_MISC,
+  .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
+  .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+
+  .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
+  .bNumConfigurations = 0x01,
+  .bReserved          = 0x00
+};
+
+uint8_t const *tud_descriptor_device_qualifier_cb(void) {
+  return (uint8_t const *) &desc_device_qualifier;
+}
+
+uint8_t const *tud_descriptor_other_speed_configuration_cb(uint8_t index) {
+  (void) index;
+
+  // if link speed is high return fullspeed config, and vice versa
+  memcpy(desc_other_speed_config,
+         (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_fs_configuration : desc_hs_configuration,
+         CONFIG_TOTAL_LEN);
+
+  desc_other_speed_config[1] = TUSB_DESC_OTHER_SPEED_CONFIG;
+
+  return desc_other_speed_config;
+}
+
+#endif // TUD_OPT_HIGH_SPEED
+
+uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
+  (void) index;
+
+#if TUD_OPT_HIGH_SPEED
+  return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_hs_configuration : desc_fs_configuration;
+#else
+  return desc_fs_configuration;
+#endif
+}
+
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
+
+enum {
+  STRID_LANGID = 0,
+  STRID_MANUFACTURER,
+  STRID_PRODUCT,
+  STRID_SERIAL,
+  STRID_CDC,
+  STRID_PRINTER,
+};
+
+static char const *string_desc_arr[] = {
+  (const char[]) { 0x09, 0x04 }, // 0: supported language is English (0x0409)
+  "TinyUSB",                     // 1: Manufacturer
+  "TinyUSB Device",              // 2: Product
+  NULL,                          // 3: Serial, use unique ID if possible
+  "TinyUSB CDC",                 // 4: CDC Interface
+  "TinyUSB Printer",             // 5: Printer Interface
+};
+
+static uint16_t _desc_str[32 + 1];
+
+uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
+  (void) langid;
+  size_t chr_count;
+
+  switch (index) {
+    case STRID_LANGID:
+      memcpy(&_desc_str[1], string_desc_arr[0], 2);
+      chr_count = 1;
+      break;
+
+    case STRID_SERIAL:
+      chr_count = board_usb_get_serial(_desc_str + 1, 32);
+      break;
+
+    default:
+      if (!(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0]))) { return NULL; }
+
+      const char *str = string_desc_arr[index];
+
+      chr_count = strlen(str);
+      size_t const max_count = sizeof(_desc_str) / sizeof(_desc_str[0]) - 1;
+      if (chr_count > max_count) { chr_count = max_count; }
+
+      for (size_t i = 0; i < chr_count; i++) {
+        _desc_str[1 + i] = str[i];
+      }
+      break;
+  }
+
+  _desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8) | (2 * chr_count + 2));
+  return _desc_str;
+}
diff --git a/examples/device/printer_to_cdc/src/usb_descriptors.h b/examples/device/printer_to_cdc/src/usb_descriptors.h
new file mode 100644
index 000000000..830593b4d
--- /dev/null
+++ b/examples/device/printer_to_cdc/src/usb_descriptors.h
@@ -0,0 +1,37 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2026 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef USB_DESCRIPTORS_H_
+#define USB_DESCRIPTORS_H_
+
+enum {
+  ITF_NUM_CDC,
+  ITF_NUM_CDC_DATA,
+  ITF_NUM_PRINTER,
+  ITF_NUM_TOTAL,
+};
+
+#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_PRINTER_DESC_LEN)
+
+#endif /* USB_DESCRIPTORS_H_ */
diff --git a/examples/device/uac2_headset/src/main.c b/examples/device/uac2_headset/src/main.c
index 96fa66f1e..0ea63d8f7 100644
--- a/examples/device/uac2_headset/src/main.c
+++ b/examples/device/uac2_headset/src/main.c
@@ -559,7 +559,7 @@ bool tud_audio_set_itf_cb(uint8_t rhport, tusb_control_request_t const *p_reques
 // In a real application, this would be replaced with actual I2S send/receive callback.
 void audio_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) return;// not enough time
   start_ms = curr_ms;
   // When new data arrived, copy data from speaker buffer, to microphone buffer
@@ -605,7 +605,7 @@ void audio_control_task(void) {
   static uint32_t start_ms = 0;
   static uint32_t btn_prev = 0;
 
-  if (board_millis() - start_ms < interval_ms) return;// not enough time
+  if (tusb_time_millis_api() - start_ms < interval_ms) return;// not enough time
   start_ms += interval_ms;
 
   uint32_t btn = board_button_read();
@@ -644,7 +644,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) return;
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) return;
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/device/uac2_speaker_fb/src/main.c b/examples/device/uac2_speaker_fb/src/main.c
index 7b4e2d64c..c3e97bb28 100644
--- a/examples/device/uac2_speaker_fb/src/main.c
+++ b/examples/device/uac2_speaker_fb/src/main.c
@@ -534,8 +534,9 @@ bool tud_audio_set_itf_close_ep_cb(uint8_t rhport, tusb_control_request_t const
   uint8_t const itf = tu_u16_low(tu_le16toh(p_request->wIndex));
   uint8_t const alt = tu_u16_low(tu_le16toh(p_request->wValue));
 
-  if (ITF_NUM_AUDIO_STREAMING == itf && alt == 0)
+  if (ITF_NUM_AUDIO_STREAMING == itf && alt == 0) {
     blink_interval_ms = BLINK_MOUNTED;
+  }
 
   return true;
 }
@@ -569,7 +570,8 @@ bool tud_audio_rx_done_isr(uint8_t rhport, uint16_t n_bytes_received, uint8_t fu
 
   fifo_count = tud_audio_available();
   // Same averaging method used in UAC2 class
-  fifo_count_avg = (uint32_t) (((uint64_t) fifo_count_avg * 63 + ((uint32_t) fifo_count << 16)) >> 6);
+  const uint32_t ff_count32 = (uint32_t) fifo_count << 16;
+  fifo_count_avg = (uint32_t) (((uint64_t) fifo_count_avg * 63 + ff_count32) >> 6);
 
   return true;
 }
@@ -583,7 +585,7 @@ bool tud_audio_rx_done_isr(uint8_t rhport, uint16_t n_bytes_received, uint8_t fu
 // In a real application, this would be replaced with actual I2S transmit callback.
 void audio_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) return;// not enough time
   start_ms = curr_ms;
 
@@ -610,7 +612,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) return;
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) return;
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
@@ -624,7 +626,7 @@ void led_blinking_task(void) {
 // Every 1ms, we will sent 1 debug information report
 void audio_debug_task(void) {
   static uint32_t start_ms = 0;
-  uint32_t curr_ms = board_millis();
+  uint32_t curr_ms = tusb_time_millis_api();
   if (start_ms == curr_ms) return;// not enough time
   start_ms = curr_ms;
 
diff --git a/examples/device/usbtmc/src/main.c b/examples/device/usbtmc/src/main.c
index 5cbbb85ef..b1269b117 100644
--- a/examples/device/usbtmc/src/main.c
+++ b/examples/device/usbtmc/src/main.c
@@ -124,12 +124,12 @@ void led_blinking_task(void)
     {
       led_state = true;
       board_led_write(true);
-      start_ms = board_millis();
+      start_ms = tusb_time_millis_api();
       doPulse = false;
     }
     else if (led_state == true)
     {
-      if ( board_millis() - start_ms < 750) //Spec says blink must be between 500 and 1000 ms.
+      if ( tusb_time_millis_api() - start_ms < 750) //Spec says blink must be between 500 and 1000 ms.
       {
         return; // not enough time
       }
@@ -140,7 +140,7 @@ void led_blinking_task(void)
   else
   {
     // Blink every interval ms
-    if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+    if ( tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
     start_ms += blink_interval_ms;
 
     board_led_write(led_state);
diff --git a/examples/device/usbtmc/src/usbtmc_app.c b/examples/device/usbtmc/src/usbtmc_app.c
index 4c3724ac4..35e8618f5 100644
--- a/examples/device/usbtmc/src/usbtmc_app.c
+++ b/examples/device/usbtmc/src/usbtmc_app.c
@@ -209,19 +209,19 @@ void usbtmc_app_task_iter(void) {
   case 0:
     break;
   case 1:
-    queryDelayStart = board_millis();
+    queryDelayStart = tusb_time_millis_api();
     queryState = 2;
     break;
   case 2:
-    if( (board_millis() - queryDelayStart) > resp_delay) {
-      queryDelayStart = board_millis();
+    if( (tusb_time_millis_api() - queryDelayStart) > resp_delay) {
+      queryDelayStart = tusb_time_millis_api();
       queryState=3;
       status |= 0x10u; // MAV
       status |= 0x40u; // SRQ
     }
     break;
   case 3:
-    if( (board_millis() - queryDelayStart) > resp_delay) {
+    if( (tusb_time_millis_api() - queryDelayStart) > resp_delay) {
       queryState = 4;
     }
     break;
diff --git a/examples/device/video_capture/src/main.c b/examples/device/video_capture/src/main.c
index ffa2a7afa..df9f77a1c 100644
--- a/examples/device/video_capture/src/main.c
+++ b/examples/device/video_capture/src/main.c
@@ -231,7 +231,7 @@ static void video_send_frame(void) {
   if (!already_sent) {
     already_sent = 1;
     tx_busy = 1;
-    start_ms = board_millis();
+    start_ms = tusb_time_millis_api();
 #if defined(CFG_EXAMPLE_VIDEO_BUFFERLESS)
     tud_video_n_frame_xfer(0, 0, NULL, FRAME_WIDTH * FRAME_HEIGHT * 16 / 8);
 #elif defined (CFG_EXAMPLE_VIDEO_READONLY)
@@ -247,7 +247,7 @@ static void video_send_frame(void) {
 #endif
   }
 
-  unsigned cur = board_millis();
+  unsigned cur = tusb_time_millis_api();
   if (cur - start_ms < interval_ms) {
     return; // not enough time
   }
@@ -316,7 +316,7 @@ void led_blinking_task(void* param) {
     #if CFG_TUSB_OS == OPT_OS_FREERTOS
     vTaskDelay(blink_interval_ms / portTICK_PERIOD_MS);
     #else
-    if (board_millis() - start_ms < blink_interval_ms) {
+    if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
       return; // not enough time
     }
     #endif
diff --git a/examples/device/video_capture_2ch/src/main.c b/examples/device/video_capture_2ch/src/main.c
index 79b149f2b..debd336fd 100644
--- a/examples/device/video_capture_2ch/src/main.c
+++ b/examples/device/video_capture_2ch/src/main.c
@@ -221,13 +221,13 @@ static void video_send_frame(uint_fast8_t ctl_idx, uint_fast8_t stm_idx) {
   if (!(already_sent & (1u << idx))) {
     already_sent |= 1u << idx;
     tx_busy |= 1u << idx;
-    start_ms[idx] = board_millis();
+    start_ms[idx] = tusb_time_millis_api();
 
     fb_size = get_framebuf(ctl_idx, stm_idx, frame_num[idx], &fp);
     tud_video_n_frame_xfer(ctl_idx, stm_idx, fp, fb_size);
   }
 
-  unsigned cur = board_millis();
+  unsigned cur = tusb_time_millis_api();
   if (cur - start_ms[idx] < interval_ms[idx]) return; // not enough time
   if (tx_busy & (1u << idx)) return;
   start_ms[idx] += interval_ms[idx];
@@ -280,7 +280,7 @@ void led_blinking_task(void* param) {
     #if CFG_TUSB_OS == OPT_OS_FREERTOS
     vTaskDelay(blink_interval_ms / portTICK_PERIOD_MS);
     #else
-    if (board_millis() - start_ms < blink_interval_ms) return; // not enough time
+    if (tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
     #endif
 
     start_ms += blink_interval_ms;
diff --git a/examples/device/webusb_serial/src/main.c b/examples/device/webusb_serial/src/main.c
index 155768b76..4be5e4db4 100644
--- a/examples/device/webusb_serial/src/main.c
+++ b/examples/device/webusb_serial/src/main.c
@@ -257,7 +257,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return; // not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/dual/CMakeLists.txt b/examples/dual/CMakeLists.txt
index 4978f1fab..8727ea938 100644
--- a/examples/dual/CMakeLists.txt
+++ b/examples/dual/CMakeLists.txt
@@ -12,6 +12,7 @@ else ()
   set(EXAMPLE_LIST
     host_hid_to_device_cdc
     host_info_to_device_cdc
+    dynamic_switch
     )
 
   foreach (example ${EXAMPLE_LIST})
diff --git a/examples/dual/dynamic_switch/CMakeLists.txt b/examples/dual/dynamic_switch/CMakeLists.txt
new file mode 100644
index 000000000..7cad30727
--- /dev/null
+++ b/examples/dual/dynamic_switch/CMakeLists.txt
@@ -0,0 +1,30 @@
+cmake_minimum_required(VERSION 3.20)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
+
+project(dynamic_switch C CXX ASM)
+
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT_NAME} ${CMAKE_CURRENT_LIST_DIR})
+
+# Espressif has its own cmake build system
+if(FAMILY STREQUAL "espressif")
+  return()
+endif()
+
+add_executable(${PROJECT_NAME})
+
+# Example source
+target_sources(${PROJECT_NAME} PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c
+  )
+
+# Example include
+target_include_directories(${PROJECT_NAME} PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/src
+  )
+
+# Configure compilation flags and libraries for the example without RTOS.
+# See the corresponding function in hw/bsp/FAMILY/family.cmake for details.
+family_configure_dual_usb_example(${PROJECT_NAME} noos)
diff --git a/examples/dual/dynamic_switch/CMakePresets.json b/examples/dual/dynamic_switch/CMakePresets.json
new file mode 100644
index 000000000..5cd8971e9
--- /dev/null
+++ b/examples/dual/dynamic_switch/CMakePresets.json
@@ -0,0 +1,6 @@
+{
+  "version": 6,
+  "include": [
+    "../../../hw/bsp/BoardPresets.json"
+  ]
+}
diff --git a/examples/dual/dynamic_switch/Makefile b/examples/dual/dynamic_switch/Makefile
new file mode 100644
index 000000000..44ab54ad7
--- /dev/null
+++ b/examples/dual/dynamic_switch/Makefile
@@ -0,0 +1,16 @@
+include ../../../hw/bsp/family_support.mk
+
+INC += \
+	src \
+
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(EXAMPLE_PATH)/, $(EXAMPLE_SOURCE))
+
+# Include device and host stack
+SRC_C += \
+	src/class/cdc/cdc_device.c \
+	src/host/hub.c \
+	src/host/usbh.c
+
+include ../../../hw/bsp/family_rules.mk
diff --git a/examples/dual/dynamic_switch/README.md b/examples/dual/dynamic_switch/README.md
new file mode 100644
index 000000000..034787f18
--- /dev/null
+++ b/examples/dual/dynamic_switch/README.md
@@ -0,0 +1,60 @@
+# Dynamic Switch Example
+
+This example demonstrates TinyUSB's dual-role capability by allowing runtime switching between USB device and host modes.
+
+## Features
+
+- **Button-triggered mode switching**: Press the board button to switch between device and host modes
+- **Device Mode**: Acts as a USB CDC (Virtual Serial Port) that echoes all received data
+- **Host Mode**: Enumerates connected USB devices and prints device information
+- **Dynamic switching**: Deinitializes the current stack and reinitializes in the new mode
+
+## Usage
+
+1. **Build and flash** the example to your board
+2. **Default behavior**: The board starts in **Device mode**
+3. **Device mode**:
+   - Connect the board to a PC
+   - Open a serial terminal (e.g., `screen /dev/ttyACM0` or PuTTY)
+   - Type characters - they will be echoed back to you
+4. **Switch to Host mode**:
+   - Press the board button
+   - Connect a USB device to the board
+   - The board will enumerate the device and print its descriptors to the debug console
+5. **Switch back to Device mode**: Press the button again
+
+## LED Patterns
+
+The onboard LED indicates the USB connection status:
+
+- **Fast blink (250ms)**: Not mounted/connected
+- **Slow blink (1000ms)**: Successfully mounted/connected
+- **Very slow blink (2500ms)**: Suspended (device mode only)
+
+## Serial Output
+
+The example prints status messages to the debug UART:
+
+```
+======================================
+TinyUSB Dynamic Switch Example
+Press button to switch between device and host modes
+Starting in DEVICE mode...
+======================================
+
+[DEVICE] Mounted
+
+--- Switching USB mode ---
+Stopping DEVICE mode...
+Starting HOST mode...
+Mode switch complete!
+
+[HOST] Device attached, address = 1
+Device 1: ID 1234:5678 SN ABC123
+Device Descriptor:
+  bLength             18
+  bDescriptorType     1
+  bcdUSB              0200
+  bDeviceClass        239
+  ...
+```
diff --git a/examples/dual/dynamic_switch/only.txt b/examples/dual/dynamic_switch/only.txt
new file mode 100644
index 000000000..70be49b28
--- /dev/null
+++ b/examples/dual/dynamic_switch/only.txt
@@ -0,0 +1,12 @@
+family:espressif
+mcu:LPC43XX
+mcu:MIMXRT1XXX
+mcu:STM32C0
+mcu:STM32G0
+mcu:STM32H5
+mcu:STM32F2
+mcu:STM32F4
+mcu:STM32U5
+mcu:STM32F7
+mcu:STM32H7
+mcu:STM32H7RS
diff --git a/examples/dual/dynamic_switch/src/CMakeLists.txt b/examples/dual/dynamic_switch/src/CMakeLists.txt
new file mode 100644
index 000000000..cef2b46ee
--- /dev/null
+++ b/examples/dual/dynamic_switch/src/CMakeLists.txt
@@ -0,0 +1,4 @@
+# This file is for ESP-IDF only
+idf_component_register(SRCS "main.c" "usb_descriptors.c"
+                    INCLUDE_DIRS "."
+                    REQUIRES boards tinyusb_src)
diff --git a/examples/dual/dynamic_switch/src/main.c b/examples/dual/dynamic_switch/src/main.c
new file mode 100644
index 000000000..c9ad2a835
--- /dev/null
+++ b/examples/dual/dynamic_switch/src/main.c
@@ -0,0 +1,496 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+/* This example demonstrates dynamic switching between device and host modes:
+ * - Press button to switch between device and host modes
+ * - Device mode: CDC echo (echoes input back to output)
+ * - Host mode: Prints connected device information
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "bsp/board_api.h"
+#include "tusb.h"
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+  #ifdef ESP_PLATFORM
+    #define USBD_STACK_SIZE     4096
+    #define USBH_STACK_SIZE     4096
+  #else
+    // Increase stack size when debug log is enabled
+    #define USBD_STACK_SIZE    (3*configMINIMAL_STACK_SIZE/2) * (CFG_TUSB_DEBUG ? 2 : 1)
+    #define USBH_STACK_SIZE    (3*configMINIMAL_STACK_SIZE/2) * (CFG_TUSB_DEBUG ? 2 : 1)
+  #endif
+
+  #define CDC_STACK_SIZE      (configMINIMAL_STACK_SIZE * (CFG_TUSB_DEBUG ? 2 : 1))
+  #define BLINKY_STACK_SIZE   configMINIMAL_STACK_SIZE
+#endif
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF PROTOTYPES
+//--------------------------------------------------------------------+
+
+// English
+#define LANGUAGE_ID 0x0409
+
+/* Blink pattern
+ * - 250 ms  : not mounted
+ * - 1000 ms : mounted
+ * - 2500 ms : suspended
+ */
+enum {
+  BLINK_NOT_MOUNTED = 250,
+  BLINK_MOUNTED = 1000,
+  BLINK_SUSPENDED = 2500,
+};
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+// static task for FreeRTOS
+#if configSUPPORT_STATIC_ALLOCATION
+StackType_t blinky_stack[BLINKY_STACK_SIZE];
+StaticTask_t blinky_taskdef;
+
+StackType_t usb_stack[USBD_STACK_SIZE > USBH_STACK_SIZE ? USBD_STACK_SIZE : USBH_STACK_SIZE];
+StaticTask_t usb_taskdef;
+
+StackType_t cdc_stack[CDC_STACK_SIZE];
+StaticTask_t cdc_taskdef;
+#endif
+#endif
+
+static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
+static tusb_role_t current_role = TUSB_ROLE_DEVICE;
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+static void usb_task(void *param);
+void led_blinking_task(void *param);
+void cdc_task(void *params);
+#else
+void led_blinking_task(void);
+void cdc_task(void);
+#endif
+void usb_mode_switch(void);
+static void print_device_info(uint8_t daddr);
+static void print_utf16(uint16_t* temp_buf, size_t buf_len);
+
+// Declare buffer for USB transfer
+CFG_TUH_MEM_SECTION struct {
+  TUH_EPBUF_TYPE_DEF(tusb_desc_device_t, device);
+  TUH_EPBUF_DEF(serial, 64*sizeof(uint16_t));
+  TUH_EPBUF_DEF(buf, 128*sizeof(uint16_t));
+} desc;
+
+//--------------------------------------------------------------------+
+// Main
+//--------------------------------------------------------------------+
+
+int main(void) {
+  board_init();
+
+  printf("\r\n======================================\r\n");
+  printf("TinyUSB Dynamic Switch Example\r\n");
+  printf("Press button to switch between device and host modes\r\n");
+  printf("Starting in DEVICE mode...\r\n");
+  printf("======================================\r\n\r\n");
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+  // Create FreeRTOS tasks
+#if configSUPPORT_STATIC_ALLOCATION
+  xTaskCreateStatic(led_blinking_task, "blinky", BLINKY_STACK_SIZE, NULL, 1, blinky_stack, &blinky_taskdef);
+  xTaskCreateStatic(usb_task, "usb", USBD_STACK_SIZE > USBH_STACK_SIZE ? USBD_STACK_SIZE : USBH_STACK_SIZE,
+                    NULL, configMAX_PRIORITIES-1, usb_stack, &usb_taskdef);
+  xTaskCreateStatic(cdc_task, "cdc", CDC_STACK_SIZE, NULL, configMAX_PRIORITIES - 2, cdc_stack, &cdc_taskdef);
+#else
+  xTaskCreate(led_blinking_task, "blinky", BLINKY_STACK_SIZE, NULL, 1, NULL);
+  xTaskCreate(usb_task, "usb", USBD_STACK_SIZE > USBH_STACK_SIZE ? USBD_STACK_SIZE : USBH_STACK_SIZE,
+              NULL, configMAX_PRIORITIES - 1, NULL);
+  xTaskCreate(cdc_task, "cdc", CDC_STACK_SIZE, NULL, configMAX_PRIORITIES - 2, NULL);
+#endif
+
+#ifndef ESP_PLATFORM
+  // only start scheduler for non-espressif mcu
+  vTaskStartScheduler();
+#endif
+
+#else
+  // Initialize in device mode by default
+  tusb_rhport_init_t dev_init = {
+    .role = TUSB_ROLE_DEVICE,
+    .speed = TUSB_SPEED_AUTO
+  };
+  tusb_init(BOARD_RHPORT, &dev_init);
+  current_role = TUSB_ROLE_DEVICE;
+
+  board_init_after_tusb();
+
+  while (1) {
+    // Check for button press to switch modes
+    static bool pending_switch = false;
+    if (board_button_read()) {
+      if (!pending_switch) {
+        pending_switch = true;
+        usb_mode_switch();
+      }
+    } else {
+      pending_switch = false;
+    }
+
+    // Process USB tasks based on current mode
+    if (current_role == TUSB_ROLE_DEVICE) {
+      tud_task();
+      cdc_task();
+    } else {
+      tuh_task();
+    }
+
+    led_blinking_task();
+  }
+#endif
+}
+
+#ifdef ESP_PLATFORM
+void app_main(void) {
+  main();
+}
+#endif
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+// USB Task for FreeRTOS
+// This top level thread processes all usb events and mode switching
+static void usb_task(void *param) {
+  (void) param;
+
+  // init device stack on configured roothub port
+  // This should be called after scheduler/kernel is started.
+  // Otherwise it could cause kernel issue since USB IRQ handler does use RTOS queue API.
+  tusb_rhport_init_t dev_init = {
+    .role = TUSB_ROLE_DEVICE,
+    .speed = TUSB_SPEED_AUTO
+  };
+  tusb_init(BOARD_RHPORT, &dev_init);
+  current_role = TUSB_ROLE_DEVICE;
+
+  board_init_after_tusb();
+
+  // RTOS forever loop
+  while (1) {
+    // Check for button press to switch modes
+    static bool pending_switch = false;
+    if (board_button_read()) {
+      if (!pending_switch) {
+        pending_switch = true;
+        usb_mode_switch();
+      }
+    } else {
+      pending_switch = false;
+    }
+
+    // Process USB tasks based on current mode
+    // Use _ext version to allow return and read button state
+    if (current_role == TUSB_ROLE_DEVICE) {
+      tud_task_ext(10, false);
+    } else {
+      tuh_task_ext(10, false);
+    }
+  }
+}
+#endif
+
+//--------------------------------------------------------------------+
+// Mode Switching
+//--------------------------------------------------------------------+
+
+void usb_mode_switch(void) {
+  printf("\r\n--- Switching USB mode ---\r\n");
+
+  // Deinitialize current mode
+  if (current_role == TUSB_ROLE_DEVICE) {
+    printf("Stopping DEVICE mode...\r\n");
+    tusb_deinit(BOARD_RHPORT);
+  } else {
+    printf("Stopping HOST mode...\r\n");
+    tusb_deinit(BOARD_RHPORT);
+  }
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+  vTaskDelay(pdMS_TO_TICKS(100)); // Small delay for clean transition
+#else
+  tusb_time_delay_ms_api(100); // Small delay for clean transition
+#endif  // Switch to the other mode
+  if (current_role == TUSB_ROLE_DEVICE) {
+    printf("Starting HOST mode...\r\n");
+    tusb_rhport_init_t host_init = {
+      .role = TUSB_ROLE_HOST,
+      .speed = TUSB_SPEED_AUTO
+    };
+    tusb_init(BOARD_RHPORT, &host_init);
+    current_role = TUSB_ROLE_HOST;
+  } else {
+    printf("Starting DEVICE mode...\r\n");
+    tusb_rhport_init_t dev_init = {
+      .role = TUSB_ROLE_DEVICE,
+      .speed = TUSB_SPEED_AUTO
+    };
+    tusb_init(BOARD_RHPORT, &dev_init);
+    current_role = TUSB_ROLE_DEVICE;
+  }
+
+  blink_interval_ms = BLINK_NOT_MOUNTED;
+  printf("Mode switch complete!\r\n\r\n");
+}
+
+//--------------------------------------------------------------------+
+// Device Mode: CDC Task
+//--------------------------------------------------------------------+
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+void cdc_task(void *params) {
+  (void) params;
+
+  // RTOS forever loop
+  while (1) {
+    // Only process CDC when in device mode
+    if (current_role == TUSB_ROLE_DEVICE) {
+      // Connected and there are data available
+      while (tud_cdc_available()) {
+        uint8_t buf[64];
+
+        // Read data
+        uint32_t count = tud_cdc_read(buf, sizeof(buf));
+
+        // Echo back
+        tud_cdc_write(buf, count);
+
+        // Add newline for carriage return
+        for (uint32_t i = 0; i < count; i++) {
+          if (buf[i] == '\r') {
+            tud_cdc_write_char('\n');
+            break;
+          }
+        }
+      }
+
+      tud_cdc_write_flush();
+    }
+
+    vTaskDelay(pdMS_TO_TICKS(10));
+  }
+}
+#else
+void cdc_task(void) {
+  // Connected and there are data available
+  if (tud_cdc_available()) {
+    uint8_t buf[64];
+
+    // Read data
+    uint32_t count = tud_cdc_read(buf, sizeof(buf));
+
+    // Echo back
+    for (uint32_t i = 0; i < count; i++) {
+      tud_cdc_write_char(buf[i]);
+
+      if (buf[i] == '\r') {
+        tud_cdc_write_char('\n');
+      }
+    }
+
+    tud_cdc_write_flush();
+  }
+}
+#endif
+
+//--------------------------------------------------------------------+
+// Device Callbacks
+//--------------------------------------------------------------------+
+
+// Invoked when device is mounted
+void tud_mount_cb(void) {
+  printf("[DEVICE] Mounted\r\n");
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+// Invoked when device is unmounted
+void tud_umount_cb(void) {
+  printf("[DEVICE] Unmounted\r\n");
+  blink_interval_ms = BLINK_NOT_MOUNTED;
+}
+
+// Invoked when usb bus is suspended
+void tud_suspend_cb(bool remote_wakeup_en) {
+  (void) remote_wakeup_en;
+  printf("[DEVICE] Suspended\r\n");
+  blink_interval_ms = BLINK_SUSPENDED;
+}
+
+// Invoked when usb bus is resumed
+void tud_resume_cb(void) {
+  printf("[DEVICE] Resumed\r\n");
+  blink_interval_ms = tud_mounted() ? BLINK_MOUNTED : BLINK_NOT_MOUNTED;
+}
+
+//--------------------------------------------------------------------+
+// Host Callbacks
+//--------------------------------------------------------------------+
+
+// Invoked when device is mounted (configured)
+void tuh_mount_cb(uint8_t daddr) {
+  printf("[HOST] Device attached, address = %d\r\n", daddr);
+  blink_interval_ms = BLINK_MOUNTED;
+  print_device_info(daddr);
+}
+
+// Invoked when device is unmounted (unplugged)
+void tuh_umount_cb(uint8_t daddr) {
+  printf("[HOST] Device removed, address = %d\r\n", daddr);
+  blink_interval_ms = BLINK_NOT_MOUNTED;
+}
+
+//--------------------------------------------------------------------+
+// Host Device Info
+//--------------------------------------------------------------------+
+
+static void print_device_info(uint8_t daddr) {
+  // Get Device Descriptor
+  uint8_t xfer_result = tuh_descriptor_get_device_sync(daddr, &desc.device, 18);
+  if (XFER_RESULT_SUCCESS != xfer_result) {
+    printf("Failed to get device descriptor\r\n");
+    return;
+  }
+
+  printf("Device %u: ID %04x:%04x SN ", daddr, desc.device.idVendor, desc.device.idProduct);
+
+  xfer_result = XFER_RESULT_FAILED;
+  if (desc.device.iSerialNumber != 0) {
+    xfer_result = tuh_descriptor_get_serial_string_sync(daddr, LANGUAGE_ID, desc.serial, sizeof(desc.serial));
+  }
+  if (XFER_RESULT_SUCCESS != xfer_result) {
+    uint16_t* serial = (uint16_t*)(uintptr_t) desc.serial;
+    serial[0] = (uint16_t) ((TUSB_DESC_STRING << 8) | (2 * 3 + 2));
+    serial[1] = 'n';
+    serial[2] = '/';
+    serial[3] = 'a';
+    serial[4] = 0;
+  }
+  print_utf16((uint16_t*)(uintptr_t) desc.serial, sizeof(desc.serial)/2);
+  printf("\r\n");
+
+  printf("Device Descriptor:\r\n");
+  printf("  bLength             %u\r\n", desc.device.bLength);
+  printf("  bDescriptorType     %u\r\n", desc.device.bDescriptorType);
+  printf("  bcdUSB              %04x\r\n", desc.device.bcdUSB);
+  printf("  bDeviceClass        %u\r\n", desc.device.bDeviceClass);
+  printf("  bDeviceSubClass     %u\r\n", desc.device.bDeviceSubClass);
+  printf("  bDeviceProtocol     %u\r\n", desc.device.bDeviceProtocol);
+  printf("  bMaxPacketSize0     %u\r\n", desc.device.bMaxPacketSize0);
+  printf("  idVendor            0x%04x\r\n", desc.device.idVendor);
+  printf("  idProduct           0x%04x\r\n", desc.device.idProduct);
+  printf("  bcdDevice           %04x\r\n", desc.device.bcdDevice);
+
+  // Get Manufacturer string
+  if (desc.device.iManufacturer) {
+    if (XFER_RESULT_SUCCESS == tuh_descriptor_get_manufacturer_string_sync(daddr, LANGUAGE_ID, desc.buf, sizeof(desc.buf))) {
+      printf("  iManufacturer       %u     ", desc.device.iManufacturer);
+      print_utf16((uint16_t*)(uintptr_t) desc.buf, sizeof(desc.buf)/2);
+      printf("\r\n");
+    }
+  }
+
+  // Get Product string
+  if (desc.device.iProduct) {
+    if (XFER_RESULT_SUCCESS == tuh_descriptor_get_product_string_sync(daddr, LANGUAGE_ID, desc.buf, sizeof(desc.buf))) {
+      printf("  iProduct            %u     ", desc.device.iProduct);
+      print_utf16((uint16_t*)(uintptr_t) desc.buf, sizeof(desc.buf)/2);
+      printf("\r\n");
+    }
+  }
+
+  // Get Serial string
+  if (desc.device.iSerialNumber) {
+    printf("  iSerialNumber       %u     ", desc.device.iSerialNumber);
+    print_utf16((uint16_t*)(uintptr_t) desc.serial, sizeof(desc.serial)/2);
+    printf("\r\n");
+  } else {
+    printf("  iSerialNumber       0\r\n");
+  }
+
+  printf("  bNumConfigurations  %u\r\n", desc.device.bNumConfigurations);
+  printf("\r\n");
+}
+
+static void print_utf16(uint16_t* temp_buf, size_t buf_len) {
+  if (temp_buf[0] == 0 || (temp_buf[0] >> 8) != TUSB_DESC_STRING) {
+    printf("(invalid)");
+    return;
+  }
+
+  size_t chr_count = (temp_buf[0] & 0xff) / 2 - 1;
+  if (chr_count > buf_len - 1) {
+    chr_count = buf_len - 1;
+  }
+
+  for (size_t i = 0; i < chr_count; i++) {
+    uint16_t ch = temp_buf[1 + i];
+    if (ch <= 0x7F) {
+      putchar((char) ch);
+    } else {
+      // TODO support UTF16 to UTF8 conversion
+      putchar('?');
+    }
+  }
+}
+
+//--------------------------------------------------------------------+
+// Blinking Task
+//--------------------------------------------------------------------+
+
+#if CFG_TUSB_OS == OPT_OS_FREERTOS
+void led_blinking_task(void *param) {
+  (void) param;
+  static bool led_state = false;
+
+  // RTOS forever loop
+  while (1) {
+    board_led_write(led_state);
+    led_state = 1 - led_state; // toggle
+    vTaskDelay(pdMS_TO_TICKS(blink_interval_ms));
+  }
+}
+#else
+void led_blinking_task(void) {
+  static uint32_t start_ms = 0;
+  static bool led_state = false;
+
+  // Blink every interval ms
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
+    return; // not enough time
+  }
+  start_ms += blink_interval_ms;
+
+  board_led_write(led_state);
+  led_state = 1 - led_state; // toggle
+}
+#endif
diff --git a/examples/dual/dynamic_switch/src/tusb_config.h b/examples/dual/dynamic_switch/src/tusb_config.h
new file mode 100644
index 000000000..af0d55f14
--- /dev/null
+++ b/examples/dual/dynamic_switch/src/tusb_config.h
@@ -0,0 +1,158 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#ifndef _TUSB_CONFIG_H_
+#define _TUSB_CONFIG_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// Board Specific Configuration
+//--------------------------------------------------------------------+
+
+// RHPort number used can be defined by board.mk, default to port 0
+#ifndef BOARD_RHPORT
+  #if defined(BOARD_TUD_RHPORT)
+    #define BOARD_RHPORT BOARD_TUD_RHPORT
+  #else
+    #define BOARD_RHPORT 0
+    #define BOARD_TUD_RHPORT 0
+  #endif
+#endif
+
+#if defined(BOARD_TUH_RHPORT)
+  #if BOARD_TUH_RHPORT != BOARD_RHPORT
+    #undef BOARD_TUH_RHPORT
+    #define BOARD_TUH_RHPORT BOARD_RHPORT
+  #endif
+#else
+  #define BOARD_TUH_RHPORT BOARD_RHPORT
+#endif
+
+// RHPort max operational speed can defined by board.mk
+#ifndef BOARD_MAX_SPEED
+  #if defined(BOARD_TUD_MAX_SPEED)
+    #define BOARD_MAX_SPEED BOARD_TUD_MAX_SPEED
+  #else
+    #define BOARD_MAX_SPEED OPT_MODE_DEFAULT_SPEED
+  #endif
+#endif
+
+//--------------------------------------------------------------------
+// COMMON CONFIGURATION
+//--------------------------------------------------------------------
+
+// defined by compiler flags for flexibility
+#ifndef CFG_TUSB_MCU
+#error CFG_TUSB_MCU must be defined
+#endif
+
+#ifndef CFG_TUSB_OS
+#define CFG_TUSB_OS OPT_OS_NONE
+#endif
+
+#ifndef CFG_TUSB_DEBUG
+#define CFG_TUSB_DEBUG 0
+#endif
+
+// Enable Device and Host stacks (dual role)
+#define CFG_TUD_ENABLED 1
+#define CFG_TUH_ENABLED 1
+
+// Default is max speed that hardware controller could support with on-chip PHY
+#define CFG_TUD_MAX_SPEED BOARD_MAX_SPEED
+#define CFG_TUH_MAX_SPEED BOARD_MAX_SPEED
+
+/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
+ * Tinyusb use follows macros to declare transferring memory so that they can be put
+ * into those specific section.
+ * e.g
+ * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
+ * - CFG_TUSB_MEM_ALIGN   : __attribute__ ((aligned(4)))
+ */
+#ifndef CFG_TUD_MEM_SECTION
+#define CFG_TUD_MEM_SECTION
+#endif
+
+#ifndef CFG_TUD_MEM_ALIGN
+#define CFG_TUD_MEM_ALIGN __attribute__((aligned(4)))
+#endif
+
+#ifndef CFG_TUH_MEM_SECTION
+#define CFG_TUH_MEM_SECTION CFG_TUD_MEM_SECTION
+#endif
+
+#ifndef CFG_TUH_MEM_ALIGN
+#define CFG_TUH_MEM_ALIGN CFG_TUD_MEM_ALIGN
+#endif
+
+//--------------------------------------------------------------------
+// DEVICE CONFIGURATION
+//--------------------------------------------------------------------
+
+#ifndef CFG_TUD_ENDPOINT0_SIZE
+#define CFG_TUD_ENDPOINT0_SIZE 64
+#endif
+
+//------------- CLASS -------------//
+#define CFG_TUD_CDC 1
+#define CFG_TUD_MSC 0
+#define CFG_TUD_HID 0
+#define CFG_TUD_MIDI 0
+#define CFG_TUD_VENDOR 0
+
+// CDC FIFO size of TX and RX
+#define CFG_TUD_CDC_RX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
+#define CFG_TUD_CDC_TX_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+// CDC Endpoint transfer buffer size, more is faster
+#define CFG_TUD_CDC_EP_BUFSIZE   (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+//--------------------------------------------------------------------
+// HOST CONFIGURATION
+//--------------------------------------------------------------------
+
+// Size of buffer to hold descriptors and other data used for enumeration
+#define CFG_TUH_ENUMERATION_BUFSIZE 256
+
+#define CFG_TUH_HUB 1
+// max device support (excluding hub device)
+#define CFG_TUH_DEVICE_MAX (CFG_TUH_HUB ? 4 : 1) // hub typically has 4 ports
+
+#define CFG_TUH_CDC 0
+#define CFG_TUH_HID 0
+#define CFG_TUH_MSC 0
+#define CFG_TUH_VENDOR 0
+
+// max endpoint pair supported by each device
+#define CFG_TUH_ENDPOINT_MAX 16
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TUSB_CONFIG_H_ */
diff --git a/examples/dual/dynamic_switch/src/usb_descriptors.c b/examples/dual/dynamic_switch/src/usb_descriptors.c
new file mode 100644
index 000000000..54ffc2c18
--- /dev/null
+++ b/examples/dual/dynamic_switch/src/usb_descriptors.c
@@ -0,0 +1,199 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#include "bsp/board_api.h"
+#include "tusb.h"
+
+/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
+ * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
+ *
+ * Auto ProductID layout's Bitmap:
+ *   [MSB]     AUDIO | MIDI | HID | MSC | CDC          [LSB]
+ */
+#define PID_MAP(itf, n) ((CFG_TUD_##itf) ? (1 << (n)) : 0)
+#define USB_PID (0x4000 | PID_MAP(CDC, 0) | PID_MAP(MSC, 1) | PID_MAP(HID, 2) | \
+                 PID_MAP(MIDI, 3) | PID_MAP(VENDOR, 4))
+
+#define USB_VID   0xCafe
+#define USB_BCD   0x0200
+
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
+static tusb_desc_device_t const desc_device = {
+  .bLength            = sizeof(tusb_desc_device_t),
+  .bDescriptorType    = TUSB_DESC_DEVICE,
+  .bcdUSB             = USB_BCD,
+  .bDeviceClass       = TUSB_CLASS_MISC,
+  .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
+  .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+
+  .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
+
+  .idVendor           = USB_VID,
+  .idProduct          = USB_PID,
+  .bcdDevice          = 0x0100,
+
+  .iManufacturer      = 0x01,
+  .iProduct           = 0x02,
+  .iSerialNumber      = 0x03,
+
+  .bNumConfigurations = 0x01
+};
+
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const *tud_descriptor_device_cb(void) {
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+
+enum {
+  ITF_NUM_CDC = 0,
+  ITF_NUM_CDC_DATA,
+  ITF_NUM_TOTAL
+};
+
+#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
+  // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
+  // 0 control, 1 In, 2 Bulk, 3 Iso, 4 In, 5 Bulk etc ...
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x82
+
+#elif defined(TUD_ENDPOINT_ONE_DIRECTION_ONLY)
+  // MCUs that don't support a same endpoint number with different direction IN and OUT defined in tusb_mcu.h
+  //    e.g EP1 OUT & EP1 IN cannot exist together
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x83
+
+#else
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x82
+
+#endif
+
+#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN)
+
+static uint8_t const desc_fs_configuration[] = {
+  // Config number, interface count, string index, total length, attribute, power in mA
+  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
+
+  // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
+};
+
+#if TUD_OPT_HIGH_SPEED
+static uint8_t const desc_hs_configuration[] = {
+  // Config number, interface count, string index, total length, attribute, power in mA
+  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
+
+  // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 512),
+};
+#endif
+
+// Invoked when received GET CONFIGURATION DESCRIPTOR
+// Application return pointer to descriptor
+// Descriptor contents must exist long enough for transfer to complete
+uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
+  (void) index; // for multiple configurations
+
+#if TUD_OPT_HIGH_SPEED
+  // Although we are highspeed, host may be fullspeed.
+  return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_hs_configuration : desc_fs_configuration;
+#else
+  return desc_fs_configuration;
+#endif
+}
+
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
+
+// String Descriptor Index
+enum {
+  STRID_LANGID = 0,
+  STRID_MANUFACTURER,
+  STRID_PRODUCT,
+  STRID_SERIAL,
+};
+
+// array of pointer to string descriptors
+static char const *string_desc_arr[] = {
+  (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
+  "TinyUSB",                     // 1: Manufacturer
+  "TinyUSB Device",              // 2: Product
+  NULL,                          // 3: Serials, will use unique ID if possible
+  "TinyUSB CDC",                 // 4: CDC Interface
+};
+
+static uint16_t _desc_str[32 + 1];
+
+// Invoked when received GET STRING DESCRIPTOR request
+// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
+uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
+  (void) langid;
+  size_t chr_count;
+
+  switch (index) {
+    case STRID_LANGID:
+      memcpy(&_desc_str[1], string_desc_arr[0], 2);
+      chr_count = 1;
+      break;
+
+    case STRID_SERIAL:
+      chr_count = board_usb_get_serial(_desc_str + 1, 32);
+      break;
+
+    default:
+      // Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
+      // https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
+
+      if (!(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0]))) { return NULL; }
+
+      const char *str = string_desc_arr[index];
+
+      // Cap at max char
+      chr_count = strlen(str);
+      size_t const max_count = sizeof(_desc_str) / sizeof(_desc_str[0]) - 1; // -1 for string type
+      if (chr_count > max_count) { chr_count = max_count; }
+
+      // Convert ASCII string into UTF-16
+      for (size_t i = 0; i < chr_count; i++) {
+        _desc_str[1 + i] = str[i];
+      }
+      break;
+  }
+
+  // first byte is length (including header), second byte is string type
+  _desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8) | (2 * chr_count + 2));
+  return _desc_str;
+}
diff --git a/examples/dual/host_hid_to_device_cdc/src/main.c b/examples/dual/host_hid_to_device_cdc/src/main.c
index 8c53588c3..c8fca48f8 100644
--- a/examples/dual/host_hid_to_device_cdc/src/main.c
+++ b/examples/dual/host_hid_to_device_cdc/src/main.c
@@ -98,8 +98,6 @@ int main(void) {
     tuh_task(); // tinyusb host task
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -284,7 +282,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/dual/host_info_to_device_cdc/src/main.c b/examples/dual/host_info_to_device_cdc/src/main.c
index fffb54d58..7cf43aef3 100644
--- a/examples/dual/host_info_to_device_cdc/src/main.c
+++ b/examples/dual/host_info_to_device_cdc/src/main.c
@@ -213,13 +213,13 @@ void cdc_task(void) {
   static uint32_t connected_ms = 0;
 
   if (!tud_cdc_connected()) {
-    connected_ms = board_millis();
+    connected_ms = tusb_time_millis_api();
     return;
   }
 
   // delay a bit otherwise we can outpace host's terminal. Linux will set LineState (DTR) then Line Coding.
   // If we send data before Linux's terminal set Line Coding, it can be ignored --> missing data with hardware test loop
-  if (board_millis() - connected_ms < 100) {
+  if (tusb_time_millis_api() - connected_ms < 100) {
     return; // wait for stable connection
   }
 
@@ -309,7 +309,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) {
+  if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
     return;// not enough time
   }
   start_ms += blink_interval_ms;
diff --git a/examples/host/bare_api/only.txt b/examples/host/bare_api/only.txt
index f07d63f9d..1ddfc2b5c 100644
--- a/examples/host/bare_api/only.txt
+++ b/examples/host/bare_api/only.txt
@@ -8,6 +8,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/bare_api/skip.txt b/examples/host/bare_api/skip.txt
new file mode 100644
index 000000000..308796869
--- /dev/null
+++ b/examples/host/bare_api/skip.txt
@@ -0,0 +1 @@
+board:lpcxpresso54114
diff --git a/examples/host/bare_api/src/main.c b/examples/host/bare_api/src/main.c
index c693d6b00..544f38102 100644
--- a/examples/host/bare_api/src/main.c
+++ b/examples/host/bare_api/src/main.c
@@ -37,11 +37,13 @@
 #define BUF_COUNT   4
 
 
-tusb_desc_device_t desc_device;
+CFG_TUH_MEM_SECTION tusb_desc_device_t desc_device;
 
-uint8_t buf_pool[BUF_COUNT][64];
+CFG_TUH_MEM_SECTION uint8_t buf_pool[BUF_COUNT][64];
 uint8_t buf_owner[BUF_COUNT] = { 0 }; // device address that owns buffer
 
+CFG_TUH_MEM_SECTION uint16_t temp_buf[128]; // temp buffer for string descriptor
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@@ -74,8 +76,6 @@ int main(void) {
     tuh_task();
     led_blinking_task();
   }
-
-  return 0;
 }
 
 /*------------- TinyUSB Callbacks -------------*/
@@ -120,8 +120,6 @@ void print_device_descriptor(tuh_xfer_t *xfer) {
   printf("  bcdDevice           %04x\r\n"   , desc_device.bcdDevice);
 
   // Get String descriptor using Sync API
-  uint16_t temp_buf[128];
-
   printf("  iManufacturer       %u     ", desc_device.iManufacturer);
   if (XFER_RESULT_SUCCESS == tuh_descriptor_get_manufacturer_string_sync(daddr, LANGUAGE_ID, temp_buf, sizeof(temp_buf))) {
     print_utf16(temp_buf, TU_ARRAY_SIZE(temp_buf));
@@ -335,7 +333,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < interval_ms) {
+  if (tusb_time_millis_api() - start_ms < interval_ms) {
     return; // not enough time
   }
   start_ms += interval_ms;
@@ -386,12 +384,12 @@ static int _count_utf8_bytes(const uint16_t *buf, size_t len) {
   return (int) total_bytes;
 }
 
-static void print_utf16(uint16_t *temp_buf, size_t buf_len) {
-  if ((temp_buf[0] & 0xff) == 0) return;// empty
-  size_t utf16_len = ((temp_buf[0] & 0xff) - 2) / sizeof(uint16_t);
-  size_t utf8_len = (size_t) _count_utf8_bytes(temp_buf + 1, utf16_len);
-  _convert_utf16le_to_utf8(temp_buf + 1, utf16_len, (uint8_t *) temp_buf, sizeof(uint16_t) * buf_len);
-  ((uint8_t *) temp_buf)[utf8_len] = '\0';
+static void print_utf16(uint16_t *buf, size_t buf_len) {
+  if ((buf[0] & 0xff) == 0) return;// empty
+  size_t utf16_len = ((buf[0] & 0xff) - 2) / sizeof(uint16_t);
+  size_t utf8_len = (size_t) _count_utf8_bytes(buf + 1, utf16_len);
+  _convert_utf16le_to_utf8(buf + 1, utf16_len, (uint8_t *) buf, sizeof(uint16_t) * buf_len);
+  ((uint8_t *) buf)[utf8_len] = '\0';
 
-  printf("%s", (char *) temp_buf);
+  printf("%s", (char *) buf);
 }
diff --git a/examples/host/cdc_msc_hid/only.txt b/examples/host/cdc_msc_hid/only.txt
index f07d63f9d..1ddfc2b5c 100644
--- a/examples/host/cdc_msc_hid/only.txt
+++ b/examples/host/cdc_msc_hid/only.txt
@@ -8,6 +8,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/cdc_msc_hid/skip.txt b/examples/host/cdc_msc_hid/skip.txt
new file mode 100644
index 000000000..308796869
--- /dev/null
+++ b/examples/host/cdc_msc_hid/skip.txt
@@ -0,0 +1 @@
+board:lpcxpresso54114
diff --git a/examples/host/cdc_msc_hid/src/main.c b/examples/host/cdc_msc_hid/src/main.c
index c309a7cae..c27ad93fe 100644
--- a/examples/host/cdc_msc_hid/src/main.c
+++ b/examples/host/cdc_msc_hid/src/main.c
@@ -92,7 +92,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < interval_ms) {
+  if (tusb_time_millis_api() - start_ms < interval_ms) {
     return;// not enough time
   }
   start_ms += interval_ms;
diff --git a/examples/host/cdc_msc_hid_freertos/only.txt b/examples/host/cdc_msc_hid_freertos/only.txt
index b0460b362..753fa7cd3 100644
--- a/examples/host/cdc_msc_hid_freertos/only.txt
+++ b/examples/host/cdc_msc_hid_freertos/only.txt
@@ -6,6 +6,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/cdc_msc_hid_freertos/skip.txt b/examples/host/cdc_msc_hid_freertos/skip.txt
index 2ba4438fd..54e7be1ba 100644
--- a/examples/host/cdc_msc_hid_freertos/skip.txt
+++ b/examples/host/cdc_msc_hid_freertos/skip.txt
@@ -1 +1,2 @@
 mcu:RP2040
+board:lpcxpresso54114
diff --git a/examples/host/device_info/only.txt b/examples/host/device_info/only.txt
index 714c1078a..742935dcf 100644
--- a/examples/host/device_info/only.txt
+++ b/examples/host/device_info/only.txt
@@ -9,6 +9,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/device_info/skip.txt b/examples/host/device_info/skip.txt
new file mode 100644
index 000000000..308796869
--- /dev/null
+++ b/examples/host/device_info/skip.txt
@@ -0,0 +1 @@
+board:lpcxpresso54114
diff --git a/examples/host/device_info/src/main.c b/examples/host/device_info/src/main.c
index ab617e989..b0e38dd6b 100644
--- a/examples/host/device_info/src/main.c
+++ b/examples/host/device_info/src/main.c
@@ -105,7 +105,6 @@ int main(void) {
     tuh_task();     // tinyusb host task
     led_blinking_task(NULL);
   }
-  return 0;
 #endif
 }
 
@@ -246,7 +245,7 @@ void led_blinking_task(void* param) {
 #if CFG_TUSB_OS == OPT_OS_FREERTOS
     vTaskDelay(blink_interval_ms / portTICK_PERIOD_MS);
 #else
-    if (board_millis() - start_ms < blink_interval_ms) {
+    if (tusb_time_millis_api() - start_ms < blink_interval_ms) {
       return; // not enough time
     }
 #endif
diff --git a/examples/host/hid_controller/only.txt b/examples/host/hid_controller/only.txt
index 8ec2f5cfe..45ca6846f 100644
--- a/examples/host/hid_controller/only.txt
+++ b/examples/host/hid_controller/only.txt
@@ -8,6 +8,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/hid_controller/skip.txt b/examples/host/hid_controller/skip.txt
new file mode 100644
index 000000000..308796869
--- /dev/null
+++ b/examples/host/hid_controller/skip.txt
@@ -0,0 +1 @@
+board:lpcxpresso54114
diff --git a/examples/host/hid_controller/src/hid_app.c b/examples/host/hid_controller/src/hid_app.c
index f8c3d029b..5417811f0 100644
--- a/examples/host/hid_controller/src/hid_app.c
+++ b/examples/host/hid_controller/src/hid_app.c
@@ -168,7 +168,7 @@ void hid_app_task(void)
     const uint32_t interval_ms = 200;
     static uint32_t start_ms = 0;
 
-    uint32_t current_time_ms = board_millis();
+    uint32_t current_time_ms = tusb_time_millis_api();
     if ( current_time_ms - start_ms >= interval_ms)
     {
       start_ms = current_time_ms;
diff --git a/examples/host/hid_controller/src/main.c b/examples/host/hid_controller/src/main.c
index fa70d7d1a..a9eebc90b 100644
--- a/examples/host/hid_controller/src/main.c
+++ b/examples/host/hid_controller/src/main.c
@@ -79,7 +79,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if ( board_millis() - start_ms < interval_ms) return; // not enough time
+  if ( tusb_time_millis_api() - start_ms < interval_ms) return; // not enough time
   start_ms += interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/host/midi_rx/only.txt b/examples/host/midi_rx/only.txt
index 9d647a340..c71aacd87 100644
--- a/examples/host/midi_rx/only.txt
+++ b/examples/host/midi_rx/only.txt
@@ -11,6 +11,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/midi_rx/skip.txt b/examples/host/midi_rx/skip.txt
new file mode 100644
index 000000000..308796869
--- /dev/null
+++ b/examples/host/midi_rx/skip.txt
@@ -0,0 +1 @@
+board:lpcxpresso54114
diff --git a/examples/host/midi_rx/src/main.c b/examples/host/midi_rx/src/main.c
index 78b1a11b9..fb36906c6 100644
--- a/examples/host/midi_rx/src/main.c
+++ b/examples/host/midi_rx/src/main.c
@@ -58,8 +58,6 @@ int main(void) {
     led_blinking_task();
     midi_host_rx_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -72,7 +70,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < interval_ms) return;// not enough time
+  if (tusb_time_millis_api() - start_ms < interval_ms) return;// not enough time
   start_ms += interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/host/msc_file_explorer/only.txt b/examples/host/msc_file_explorer/only.txt
index f07d63f9d..1ddfc2b5c 100644
--- a/examples/host/msc_file_explorer/only.txt
+++ b/examples/host/msc_file_explorer/only.txt
@@ -8,6 +8,8 @@ mcu:LPC177X_8X
 mcu:LPC18XX
 mcu:LPC40XX
 mcu:LPC43XX
+mcu:LPC54
+mcu:LPC55
 mcu:MAX3421
 mcu:MIMXRT10XX
 mcu:MIMXRT11XX
diff --git a/examples/host/msc_file_explorer/skip.txt b/examples/host/msc_file_explorer/skip.txt
new file mode 100644
index 000000000..308796869
--- /dev/null
+++ b/examples/host/msc_file_explorer/skip.txt
@@ -0,0 +1 @@
+board:lpcxpresso54114
diff --git a/examples/host/msc_file_explorer/src/main.c b/examples/host/msc_file_explorer/src/main.c
index f9ec0ff5f..f6bf9a60a 100644
--- a/examples/host/msc_file_explorer/src/main.c
+++ b/examples/host/msc_file_explorer/src/main.c
@@ -92,8 +92,6 @@ int main(void) {
     msc_app_task();
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -118,7 +116,7 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < interval_ms) return; // not enough time
+  if (tusb_time_millis_api() - start_ms < interval_ms) return; // not enough time
   start_ms += interval_ms;
 
   board_led_write(led_state);
diff --git a/examples/host/msc_file_explorer/src/msc_app.c b/examples/host/msc_file_explorer/src/msc_app.c
index 40a9ef57e..6ac63e937 100644
--- a/examples/host/msc_file_explorer/src/msc_app.c
+++ b/examples/host/msc_file_explorer/src/msc_app.c
@@ -49,11 +49,14 @@
 #define CLI_BINDING_COUNT   8
 
 static EmbeddedCli *_cli;
-static CLI_UINT cli_buffer[BYTES_TO_CLI_UINTS(CLI_BUFFER_SIZE)];
+static CLI_UINT     cli_buffer[BYTES_TO_CLI_UINTS(CLI_BUFFER_SIZE)];
 
 //------------- Elm Chan FatFS -------------//
-static FATFS fatfs[CFG_TUH_DEVICE_MAX]; // for simplicity only support 1 LUN per device
-static volatile bool _disk_busy[CFG_TUH_DEVICE_MAX];
+static CFG_TUH_MEM_SECTION FATFS fatfs[CFG_TUH_DEVICE_MAX]; // for simplicity only support 1 LUN per device
+static volatile bool              _disk_busy[CFG_TUH_DEVICE_MAX];
+
+static CFG_TUH_MEM_SECTION FIL     file1, file2;
+static CFG_TUH_MEM_SECTION uint8_t rw_buf[512];
 
 // define the buffer to be place in USB/DMA memory with correct alignment/cache line size
 CFG_TUH_MEM_SECTION static struct {
@@ -67,34 +70,30 @@ CFG_TUH_MEM_SECTION static struct {
 
 bool cli_init(void);
 
-bool msc_app_init(void)
-{
-  for(size_t i=0; i<CFG_TUH_DEVICE_MAX; i++) {
+bool msc_app_init(void) {
+  for (size_t i = 0; i < CFG_TUH_DEVICE_MAX; i++) {
     _disk_busy[i] = false;
   }
 
-  // disable stdout buffered for echoing typing command
-  #ifndef __ICCARM__ // TODO IAR doesn't support stream control ?
+// disable stdout buffered for echoing typing command
+#ifndef __ICCARM__ // TODO IAR doesn't support stream control ?
   setbuf(stdout, NULL);
-  #endif
+#endif
 
   cli_init();
 
   return true;
 }
 
-void msc_app_task(void)
-{
+void msc_app_task(void) {
   if (!_cli) {
     return;
   }
 
   int ch = board_getchar();
-  if ( ch > 0 )
-  {
-    while( ch > 0 )
-    {
-      embeddedCliReceiveChar(_cli, (char) ch);
+  if (ch > 0) {
+    while (ch > 0) {
+      embeddedCliReceiveChar(_cli, (char)ch);
       ch = board_getchar();
     }
     embeddedCliProcess(_cli);
@@ -105,33 +104,32 @@ void msc_app_task(void)
 //
 //--------------------------------------------------------------------+
 
-static bool inquiry_complete_cb(uint8_t dev_addr, tuh_msc_complete_data_t const * cb_data) {
-  msc_cbw_t const* cbw = cb_data->cbw;
-  msc_csw_t const* csw = cb_data->csw;
+static bool inquiry_complete_cb(uint8_t dev_addr, const tuh_msc_complete_data_t *cb_data) {
+  const msc_cbw_t *cbw = cb_data->cbw;
+  const msc_csw_t *csw = cb_data->csw;
 
-  if (csw->status != 0)
-  {
+  if (csw->status != 0) {
     printf("Inquiry failed\r\n");
     return false;
   }
 
   // Print out Vendor ID, Product ID and Rev
-  printf("%.8s %.16s rev %.4s\r\n", scsi_resp.inquiry.vendor_id, scsi_resp.inquiry.product_id, scsi_resp.inquiry.product_rev);
+  printf("%.8s %.16s rev %.4s\r\n", scsi_resp.inquiry.vendor_id, scsi_resp.inquiry.product_id,
+         scsi_resp.inquiry.product_rev);
 
   // Get capacity of device
-  uint32_t const block_count = tuh_msc_get_block_count(dev_addr, cbw->lun);
-  uint32_t const block_size = tuh_msc_get_block_size(dev_addr, cbw->lun);
+  const uint32_t block_count = tuh_msc_get_block_count(dev_addr, cbw->lun);
+  const uint32_t block_size  = tuh_msc_get_block_size(dev_addr, cbw->lun);
 
-  printf("Disk Size: %" PRIu32 " MB\r\n", block_count / ((1024*1024)/block_size));
+  printf("Disk Size: %" PRIu32 " MB\r\n", block_count / ((1024 * 1024) / block_size));
   // printf("Block Count = %lu, Block Size: %lu\r\n", block_count, block_size);
 
   // For simplicity: we only mount 1 LUN per device
-  uint8_t const drive_num = dev_addr-1;
-  char drive_path[3] = "0:";
+  const uint8_t drive_num     = dev_addr - 1;
+  char          drive_path[3] = "0:";
   drive_path[0] += drive_num;
 
-  if ( f_mount(&fatfs[drive_num], drive_path, 1) != FR_OK )
-  {
+  if (f_mount(&fatfs[drive_num], drive_path, 1) != FR_OK) {
     puts("mount failed");
   }
 
@@ -139,151 +137,134 @@ static bool inquiry_complete_cb(uint8_t dev_addr, tuh_msc_complete_data_t const
   f_chdir(drive_path);
 
   // print the drive label
-//  char label[34];
-//  if ( FR_OK == f_getlabel(drive_path, label, NULL) )
-//  {
-//    puts(label);
-//  }
+  //  char label[34];
+  //  if ( FR_OK == f_getlabel(drive_path, label, NULL) )
+  //  {
+  //    puts(label);
+  //  }
 
   return true;
 }
 
 //------------- IMPLEMENTATION -------------//
-void tuh_msc_mount_cb(uint8_t dev_addr)
-{
+void tuh_msc_mount_cb(uint8_t dev_addr) {
   printf("A MassStorage device is mounted\r\n");
 
-  uint8_t const lun = 0;
+  const uint8_t lun = 0;
   tuh_msc_inquiry(dev_addr, lun, &scsi_resp.inquiry, inquiry_complete_cb, 0);
 }
 
-void tuh_msc_umount_cb(uint8_t dev_addr)
-{
+void tuh_msc_umount_cb(uint8_t dev_addr) {
   printf("A MassStorage device is unmounted\r\n");
 
-  uint8_t const drive_num = dev_addr-1;
-  char drive_path[3] = "0:";
+  const uint8_t drive_num     = dev_addr - 1;
+  char          drive_path[3] = "0:";
   drive_path[0] += drive_num;
 
   f_unmount(drive_path);
 
-//  if ( phy_disk == f_get_current_drive() )
-//  { // active drive is unplugged --> change to other drive
-//    for(uint8_t i=0; i<CFG_TUH_DEVICE_MAX; i++)
-//    {
-//      if ( disk_is_ready(i) )
-//      {
-//        f_chdrive(i);
-//        cli_init(); // refractor, rename
-//      }
-//    }
-//  }
+  //  if ( phy_disk == f_get_current_drive() )
+  //  { // active drive is unplugged --> change to other drive
+  //    for(uint8_t i=0; i<CFG_TUH_DEVICE_MAX; i++)
+  //    {
+  //      if ( disk_is_ready(i) )
+  //      {
+  //        f_chdrive(i);
+  //        cli_init(); // refractor, rename
+  //      }
+  //    }
+  //  }
 }
 
 //--------------------------------------------------------------------+
 // DiskIO
 //--------------------------------------------------------------------+
 
-static void wait_for_disk_io(BYTE pdrv)
-{
-  while(_disk_busy[pdrv])
-  {
+static void wait_for_disk_io(BYTE pdrv) {
+  while (_disk_busy[pdrv]) {
     tuh_task();
   }
 }
 
-static bool disk_io_complete(uint8_t dev_addr, tuh_msc_complete_data_t const * cb_data)
-{
-  (void) dev_addr; (void) cb_data;
-  _disk_busy[dev_addr-1] = false;
+static bool disk_io_complete(uint8_t dev_addr, const tuh_msc_complete_data_t *cb_data) {
+  (void)dev_addr;
+  (void)cb_data;
+  _disk_busy[dev_addr - 1] = false;
   return true;
 }
 
-DSTATUS disk_status (
-	BYTE pdrv		/* Physical drive nmuber to identify the drive */
-)
-{
+DSTATUS disk_status(BYTE pdrv /* Physical drive nmuber to identify the drive */
+) {
   uint8_t dev_addr = pdrv + 1;
   return tuh_msc_mounted(dev_addr) ? 0 : STA_NODISK;
 }
 
-DSTATUS disk_initialize (
-	BYTE pdrv				/* Physical drive nmuber to identify the drive */
-)
-{
-  (void) pdrv;
-	return 0; // nothing to do
+DSTATUS disk_initialize(BYTE pdrv /* Physical drive nmuber to identify the drive */
+) {
+  (void)pdrv;
+  return 0;                       // nothing to do
 }
 
-DRESULT disk_read (
-	BYTE pdrv,		/* Physical drive nmuber to identify the drive */
-	BYTE *buff,		/* Data buffer to store read data */
-	LBA_t sector,	/* Start sector in LBA */
-	UINT count		/* Number of sectors to read */
-)
-{
-	uint8_t const dev_addr = pdrv + 1;
-	uint8_t const lun = 0;
+DRESULT disk_read(BYTE  pdrv,     /* Physical drive nmuber to identify the drive */
+                  BYTE *buff,     /* Data buffer to store read data */
+                  LBA_t sector,   /* Start sector in LBA */
+                  UINT  count     /* Number of sectors to read */
+) {
+  const uint8_t dev_addr = pdrv + 1;
+  const uint8_t lun      = 0;
 
-	_disk_busy[pdrv] = true;
-	tuh_msc_read10(dev_addr, lun, buff, sector, (uint16_t) count, disk_io_complete, 0);
-	wait_for_disk_io(pdrv);
+  _disk_busy[pdrv] = true;
+  tuh_msc_read10(dev_addr, lun, buff, sector, (uint16_t)count, disk_io_complete, 0);
+  wait_for_disk_io(pdrv);
 
-	return RES_OK;
+  return RES_OK;
 }
 
 #if FF_FS_READONLY == 0
 
-DRESULT disk_write (
-	BYTE pdrv,			/* Physical drive nmuber to identify the drive */
-	const BYTE *buff,	/* Data to be written */
-	LBA_t sector,		/* Start sector in LBA */
-	UINT count			/* Number of sectors to write */
-)
-{
-	uint8_t const dev_addr = pdrv + 1;
-	uint8_t const lun = 0;
+DRESULT disk_write(BYTE        pdrv,   /* Physical drive nmuber to identify the drive */
+                   const BYTE *buff,   /* Data to be written */
+                   LBA_t       sector, /* Start sector in LBA */
+                   UINT        count   /* Number of sectors to write */
+) {
+  const uint8_t dev_addr = pdrv + 1;
+  const uint8_t lun      = 0;
 
-	_disk_busy[pdrv] = true;
-	tuh_msc_write10(dev_addr, lun, buff, sector, (uint16_t) count, disk_io_complete, 0);
-	wait_for_disk_io(pdrv);
+  _disk_busy[pdrv] = true;
+  tuh_msc_write10(dev_addr, lun, buff, sector, (uint16_t)count, disk_io_complete, 0);
+  wait_for_disk_io(pdrv);
 
-	return RES_OK;
+  return RES_OK;
 }
 
 #endif
 
-DRESULT disk_ioctl (
-	BYTE pdrv,		/* Physical drive nmuber (0..) */
-	BYTE cmd,		/* Control code */
-	void *buff		/* Buffer to send/receive control data */
-)
-{
-  uint8_t const dev_addr = pdrv + 1;
-  uint8_t const lun = 0;
-  switch ( cmd )
-  {
+DRESULT disk_ioctl(BYTE  pdrv, /* Physical drive nmuber (0..) */
+                   BYTE  cmd,  /* Control code */
+                   void *buff  /* Buffer to send/receive control data */
+) {
+  const uint8_t dev_addr = pdrv + 1;
+  const uint8_t lun      = 0;
+  switch (cmd) {
     case CTRL_SYNC:
       // nothing to do since we do blocking
       return RES_OK;
 
     case GET_SECTOR_COUNT:
-      *((DWORD*) buff) = (WORD) tuh_msc_get_block_count(dev_addr, lun);
+      *((DWORD *)buff) = (WORD)tuh_msc_get_block_count(dev_addr, lun);
       return RES_OK;
 
     case GET_SECTOR_SIZE:
-      *((WORD*) buff) = (WORD) tuh_msc_get_block_size(dev_addr, lun);
+      *((WORD *)buff) = (WORD)tuh_msc_get_block_size(dev_addr, lun);
       return RES_OK;
 
     case GET_BLOCK_SIZE:
-      *((DWORD*) buff) = 1;    // erase block size in units of sector size
+      *((DWORD *)buff) = 1; // erase block size in units of sector size
       return RES_OK;
 
     default:
       return RES_PARERR;
   }
-
-	return RES_OK;
 }
 
 //--------------------------------------------------------------------+
@@ -300,12 +281,11 @@ void cli_cmd_mv(EmbeddedCli *cli, char *args, void *context);
 void cli_cmd_rm(EmbeddedCli *cli, char *args, void *context);
 
 static void cli_write_char(EmbeddedCli *cli, char c) {
-  (void) cli;
-  putchar((int) c);
+  (void)cli;
+  putchar((int)c);
 }
 
-bool cli_init(void)
-{
+bool cli_init(void) {
   EmbeddedCliConfig *config = embeddedCliDefaultConfig();
   config->cliBuffer         = cli_buffer;
   config->cliBufferSize     = CLI_BUFFER_SIZE;
@@ -321,230 +301,173 @@ bool cli_init(void)
 
   _cli->writeChar = cli_write_char;
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "cat",
-    "Usage: cat [FILE]...\r\n\tConcatenate FILE(s) to standard output..",
-    true,
-    NULL,
-    cli_cmd_cat
-  });
+  embeddedCliAddBinding(_cli,
+                        (CliCommandBinding){"cat", "Usage: cat [FILE]...\r\n\tConcatenate FILE(s) to standard output..",
+                                            true, NULL, cli_cmd_cat});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "cd",
-    "Usage: cd [DIR]...\r\n\tChange the current directory to DIR.",
-    true,
-    NULL,
-    cli_cmd_cd
-  });
+  embeddedCliAddBinding(_cli, (CliCommandBinding){"cd", "Usage: cd [DIR]...\r\n\tChange the current directory to DIR.",
+                                                  true, NULL, cli_cmd_cd});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "cp",
-    "Usage: cp SOURCE DEST\r\n\tCopy SOURCE to DEST.",
-    true,
-    NULL,
-    cli_cmd_cp
-  });
+  embeddedCliAddBinding(_cli, (CliCommandBinding){"cp", "Usage: cp SOURCE DEST\r\n\tCopy SOURCE to DEST.", true, NULL,
+                                                  cli_cmd_cp});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "ls",
-    "Usage: ls [DIR]...\r\n\tList information about the FILEs (the current directory by default).",
-    true,
-    NULL,
-    cli_cmd_ls
-  });
+  embeddedCliAddBinding(_cli, (CliCommandBinding){"ls",
+                                                  "Usage: ls [DIR]...\r\n\tList information about the FILEs (the "
+                                                  "current directory by default).",
+                                                  true, NULL, cli_cmd_ls});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "pwd",
-    "Usage: pwd\r\n\tPrint the name of the current working directory.",
-    true,
-    NULL,
-    cli_cmd_pwd
-  });
+  embeddedCliAddBinding(_cli,
+                        (CliCommandBinding){"pwd", "Usage: pwd\r\n\tPrint the name of the current working directory.",
+                                            true, NULL, cli_cmd_pwd});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "mkdir",
-    "Usage: mkdir DIR...\r\n\tCreate the DIRECTORY(ies), if they do not already exist..",
-    true,
-    NULL,
-    cli_cmd_mkdir
-  });
+  embeddedCliAddBinding(_cli, (CliCommandBinding){"mkdir",
+                                                  "Usage: mkdir DIR...\r\n\tCreate the DIRECTORY(ies), if they do not "
+                                                  "already exist..",
+                                                  true, NULL, cli_cmd_mkdir});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "mv",
-    "Usage: mv SOURCE DEST...\r\n\tRename SOURCE to DEST.",
-    true,
-    NULL,
-    cli_cmd_mv
-  });
+  embeddedCliAddBinding(_cli, (CliCommandBinding){"mv", "Usage: mv SOURCE DEST...\r\n\tRename SOURCE to DEST.", true,
+                                                  NULL, cli_cmd_mv});
 
-  embeddedCliAddBinding(_cli, (CliCommandBinding) {
-    "rm",
-    "Usage: rm [FILE]...\r\n\tRemove (unlink) the FILE(s).",
-    true,
-    NULL,
-    cli_cmd_rm
-  });
+  embeddedCliAddBinding(_cli, (CliCommandBinding){"rm", "Usage: rm [FILE]...\r\n\tRemove (unlink) the FILE(s).", true,
+                                                  NULL, cli_cmd_rm});
 
   return true;
 }
 
-void cli_cmd_cat(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_cat(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
 
   // need at least 1 argument
-  if ( argc == 0 )
-  {
+  if (argc == 0) {
     printf("invalid arguments\r\n");
     return;
   }
 
-  for(uint16_t i=0; i<argc; i++)
-  {
-    FIL fi;
-    const char* fpath = embeddedCliGetToken(args, i+1); // token count from 1
+  for (uint16_t i = 0; i < argc; i++) {
+    FIL        *fi    = &file1;
+    const char *fpath = embeddedCliGetToken(args, i + 1); // token count from 1
 
-    if ( FR_OK != f_open(&fi, fpath, FA_READ) )
-    {
+    if (FR_OK != f_open(fi, fpath, FA_READ)) {
       printf("%s: No such file or directory\r\n", fpath);
-    }else
-    {
-      uint8_t buf[512];
+    } else {
       UINT count = 0;
-      while ( (FR_OK == f_read(&fi, buf, sizeof(buf), &count)) && (count > 0) )
-      {
-        for(UINT c = 0; c < count; c++)
-        {
-          const uint8_t ch = buf[c];
-          if (isprint(ch) || iscntrl(ch))
-          {
+      while ((FR_OK == f_read(fi, rw_buf, sizeof(rw_buf), &count)) && (count > 0)) {
+        for (UINT c = 0; c < count; c++) {
+          const uint8_t ch = rw_buf[c];
+          if (isprint(ch) || iscntrl(ch)) {
             putchar(ch);
-          }else
-          {
+          } else {
             putchar('.');
           }
         }
       }
     }
 
-    f_close(&fi);
+    f_close(fi);
   }
 }
 
-void cli_cmd_cd(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_cd(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
 
   // only support 1 argument
-  if ( argc != 1 )
-  {
+  if (argc != 1) {
     printf("invalid arguments\r\n");
     return;
   }
 
   // default is current directory
-  const char* dpath = args;
+  const char *dpath = args;
 
-  if ( FR_OK != f_chdir(dpath) )
-  {
+  if (FR_OK != f_chdir(dpath)) {
     printf("%s: No such file or directory\r\n", dpath);
     return;
   }
 }
 
-void cli_cmd_cp(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_cp(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
-  if ( argc != 2 )
-  {
+  if (argc != 2) {
     printf("invalid arguments\r\n");
     return;
   }
 
   // default is current directory
-  const char* src = embeddedCliGetToken(args, 1);
-  const char* dst = embeddedCliGetToken(args, 2);
+  const char *src = embeddedCliGetToken(args, 1);
+  const char *dst = embeddedCliGetToken(args, 2);
 
-  FIL f_src;
-  FIL f_dst;
+  FIL *f_src = &file1;
+  FIL *f_dst = &file2;
 
-  if ( FR_OK != f_open(&f_src, src, FA_READ) )
-  {
+  if (FR_OK != f_open(f_src, src, FA_READ)) {
     printf("cannot stat '%s': No such file or directory\r\n", src);
     return;
   }
 
-  if ( FR_OK != f_open(&f_dst, dst, FA_WRITE | FA_CREATE_ALWAYS) )
-  {
+  if (FR_OK != f_open(f_dst, dst, FA_WRITE | FA_CREATE_ALWAYS)) {
     printf("cannot create '%s'\r\n", dst);
     return;
-  }else
-  {
-    uint8_t buf[512];
+  } else {
     UINT rd_count = 0;
-    while ( (FR_OK == f_read(&f_src, buf, sizeof(buf), &rd_count)) && (rd_count > 0) )
-    {
+    while ((FR_OK == f_read(f_src, rw_buf, sizeof(rw_buf), &rd_count)) && (rd_count > 0)) {
       UINT wr_count = 0;
 
-      if ( FR_OK != f_write(&f_dst, buf, rd_count, &wr_count) )
-      {
+      if (FR_OK != f_write(f_dst, rw_buf, rd_count, &wr_count)) {
         printf("cannot write to '%s'\r\n", dst);
         break;
       }
     }
   }
 
-  f_close(&f_src);
-  f_close(&f_dst);
+  f_close(f_src);
+  f_close(f_dst);
 }
 
-void cli_cmd_ls(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_ls(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
 
   // only support 1 argument
-  if ( argc > 1 )
-  {
+  if (argc > 1) {
     printf("invalid arguments\r\n");
     return;
   }
 
   // default is current directory
-  const char* dpath = ".";
-  if (argc) dpath = args;
+  const char *dpath = ".";
+  if (argc) {
+    dpath = args;
+  }
 
   DIR dir;
-  if ( FR_OK != f_opendir(&dir, dpath) )
-  {
+  if (FR_OK != f_opendir(&dir, dpath)) {
     printf("cannot access '%s': No such file or directory\r\n", dpath);
     return;
   }
 
   FILINFO fno;
-  while( (f_readdir(&dir, &fno) == FR_OK) && (fno.fname[0] != 0) )
-  {
-    if ( fno.fname[0] != '.' ) // ignore . and .. entry
+  while ((f_readdir(&dir, &fno) == FR_OK) && (fno.fname[0] != 0)) {
+    if (fno.fname[0] != '.') // ignore . and .. entry
     {
-      if ( fno.fattrib & AM_DIR )
-      {
+      if (fno.fattrib & AM_DIR) {
         // directory
         printf("/%s\r\n", fno.fname);
-      }else
-      {
+      } else {
         printf("%-40s", fno.fname);
-        if (fno.fsize < 1024)
-        {
+        if (fno.fsize < 1024) {
           printf("%" PRIu32 " B\r\n", fno.fsize);
-        }else
-        {
+        } else {
           printf("%" PRIu32 " KB\r\n", fno.fsize / 1024);
         }
       }
@@ -554,90 +477,81 @@ void cli_cmd_ls(EmbeddedCli *cli, char *args, void *context)
   f_closedir(&dir);
 }
 
-void cli_cmd_pwd(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_pwd(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
   uint16_t argc = embeddedCliGetTokenCount(args);
 
-  if (argc != 0)
-  {
+  if (argc != 0) {
     printf("invalid arguments\r\n");
     return;
   }
 
   char path[256];
-  if (FR_OK != f_getcwd(path, sizeof(path)))
-  {
+  if (FR_OK != f_getcwd(path, sizeof(path))) {
     printf("cannot get current working directory\r\n");
   }
 
   puts(path);
 }
 
-void cli_cmd_mkdir(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_mkdir(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
 
   // only support 1 argument
-  if ( argc != 1 )
-  {
+  if (argc != 1) {
     printf("invalid arguments\r\n");
     return;
   }
 
   // default is current directory
-  const char* dpath = args;
+  const char *dpath = args;
 
-  if ( FR_OK != f_mkdir(dpath) )
-  {
+  if (FR_OK != f_mkdir(dpath)) {
     printf("%s: cannot create this directory\r\n", dpath);
     return;
   }
 }
 
-void cli_cmd_mv(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_mv(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
-  if ( argc != 2 )
-  {
+  if (argc != 2) {
     printf("invalid arguments\r\n");
     return;
   }
 
   // default is current directory
-  const char* src = embeddedCliGetToken(args, 1);
-  const char* dst = embeddedCliGetToken(args, 2);
+  const char *src = embeddedCliGetToken(args, 1);
+  const char *dst = embeddedCliGetToken(args, 2);
 
-  if ( FR_OK != f_rename(src, dst) )
-  {
+  if (FR_OK != f_rename(src, dst)) {
     printf("cannot mv %s to %s\r\n", src, dst);
     return;
   }
 }
 
-void cli_cmd_rm(EmbeddedCli *cli, char *args, void *context)
-{
-  (void) cli; (void) context;
+void cli_cmd_rm(EmbeddedCli *cli, char *args, void *context) {
+  (void)cli;
+  (void)context;
 
   uint16_t argc = embeddedCliGetTokenCount(args);
 
   // need at least 1 argument
-  if ( argc == 0 )
-  {
+  if (argc == 0) {
     printf("invalid arguments\r\n");
     return;
   }
 
-  for(uint16_t i=0; i<argc; i++)
-  {
-    const char* fpath = embeddedCliGetToken(args, i+1); // token count from 1
+  for (uint16_t i = 0; i < argc; i++) {
+    const char *fpath = embeddedCliGetToken(args, i + 1); // token count from 1
 
-    if ( FR_OK != f_unlink(fpath) )
-    {
+    if (FR_OK != f_unlink(fpath)) {
       printf("cannot remove '%s': No such file or directory\r\n", fpath);
     }
   }
diff --git a/examples/typec/power_delivery/src/main.c b/examples/typec/power_delivery/src/main.c
index de0db4721..f6191bfe8 100644
--- a/examples/typec/power_delivery/src/main.c
+++ b/examples/typec/power_delivery/src/main.c
@@ -184,7 +184,7 @@ void led_blinking_task(void)
   static bool led_state = false;
 
   // Blink every interval ms
-  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if ( tusb_time_millis_api() - start_ms < blink_interval_ms) return; // not enough time
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);