3 files changed, 16 insertions, 6 deletions
diff --git a/examples/device/cdc_msc_freertos/src/main.c b/examples/device/cdc_msc_freertos/src/main.c
index 0a1c964ae..a5e907199 100644
--- a/examples/device/cdc_msc_freertos/src/main.c
+++ b/examples/device/cdc_msc_freertos/src/main.c
@@ -130,8 +130,11 @@ void usb_device_task(void* param)
   // RTOS forever loop
   while (1)
   {
-    // tinyusb device task
+    // put this thread to waiting state until there is new events
     tud_task();
+
+    // following code only run if tud_task() process at least 1 event
+    tud_cdc_write_flush();
   }
 }
 
@@ -181,7 +184,7 @@ void cdc_task(void* params)
     // if ( tud_cdc_connected() )
     {
       // There are data available
-      if ( tud_cdc_available() )
+      while ( tud_cdc_available() )
       {
         uint8_t buf[64];
 
@@ -194,12 +197,13 @@ void cdc_task(void* params)
         // for throughput test e.g
         //    $ dd if=/dev/zero of=/dev/ttyACM0 count=10000
         tud_cdc_write(buf, count);
-        tud_cdc_write_flush();
       }
+
+      tud_cdc_write_flush();
     }
 
-    // For ESP32-S2 this delay is essential to allow idle how to run and reset wdt
-    vTaskDelay(pdMS_TO_TICKS(10));
+    // For ESP32-Sx this delay is essential to allow idle how to run and reset watchdog
+    vTaskDelay(1);
   }
 }
 
diff --git a/examples/device/hid_boot_interface/src/tusb_config.h b/examples/device/hid_boot_interface/src/tusb_config.h
index 1c8fa40b2..8bc85b722 100644
--- a/examples/device/hid_boot_interface/src/tusb_config.h
+++ b/examples/device/hid_boot_interface/src/tusb_config.h
@@ -39,6 +39,10 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
+// Use raspberry pio-usb for device
+// #define CFG_TUD_RPI_PIO_USB     1
+// #define BOARD_DEVICE_RHPORT_NUM 1
+
 // RHPort number used for device can be defined by board.mk, default to port 0
 #ifndef BOARD_DEVICE_RHPORT_NUM
   #define BOARD_DEVICE_RHPORT_NUM     0
diff --git a/examples/device/hid_composite_freertos/src/main.c b/examples/device/hid_composite_freertos/src/main.c
index 1695f968c..317b64611 100644
--- a/examples/device/hid_composite_freertos/src/main.c
+++ b/examples/device/hid_composite_freertos/src/main.c
@@ -132,8 +132,10 @@ void usb_device_task(void* param)
   // RTOS forever loop
   while (1)
   {
-    // tinyusb device task
+    // put this thread to waiting state until there is new events
     tud_task();
+
+    // following code only run if tud_task() process at least 1 event
   }
 }