Merge branch 'master' of https://github.com/hathach/tinyusb into pr1942

94 files changed, 184 insertions, 327 deletions

diff --git a/examples/device/audio_4_channel_mic/skip.txt b/examples/device/audio_4_channel_mic/skip.txt
index ae9b57f1f..1ee86a485 100644
--- a/examples/device/audio_4_channel_mic/skip.txt
+++ b/examples/device/audio_4_channel_mic/skip.txt
@@ -1,3 +1,3 @@
 mcu:SAMD11
 mcu:SAME5X
-mcu:SAMG
\ No newline at end of file
+mcu:SAMG
diff --git a/examples/device/audio_4_channel_mic/src/main.c b/examples/device/audio_4_channel_mic/src/main.c
index a6af5fd19..2b9c5143d 100644
--- a/examples/device/audio_4_channel_mic/src/main.c
+++ b/examples/device/audio_4_channel_mic/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Reinhard Panhuber
@@ -99,9 +99,6 @@ int main(void)
     led_blinking_task();
     audio_task();
   }
-
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -290,7 +287,7 @@ bool tud_audio_get_req_entity_cb(uint8_t rhport, tusb_control_request_t const *
 
         // Those are dummy values for now
         ret.bNrChannels = 1;
-        ret.bmChannelConfig = 0;
+        ret.bmChannelConfig = (audio_channel_config_t) 0;
         ret.iChannelNames = 0;
 
         TU_LOG2("    Get terminal connector\r\n");
diff --git a/examples/device/audio_4_channel_mic/src/plot_audio_samples.py b/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
index 9ab15135d..8312b4e28 100644
--- a/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
+++ b/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
@@ -31,4 +31,3 @@ if __name__ == '__main__':
     plt.ylabel('Amplitude')
     plt.title('MicNode 4 Channel')
     plt.show()
-    
\ No newline at end of file
diff --git a/examples/device/audio_4_channel_mic/src/usb_descriptors.c b/examples/device/audio_4_channel_mic/src/usb_descriptors.c
index 8929f3057..b77da9fac 100644
--- a/examples/device/audio_4_channel_mic/src/usb_descriptors.c
+++ b/examples/device/audio_4_channel_mic/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -44,7 +44,7 @@ tusb_desc_device_t const desc_device =
     .bDescriptorType    = TUSB_DESC_DEVICE,
     .bcdUSB             = 0x0200,
 
-    // Use Interface Association Descriptor (IAD) for CDC
+    // Use Interface Association Descriptor (IAD) for Audio
     // 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,
@@ -96,7 +96,7 @@ enum
 
 uint8_t const desc_configuration[] =
 {
-  // Interface count, string index, total length, attribute, power in mA
+  // 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 Out & EP In address, EP size
diff --git a/examples/device/audio_test/CMakeLists.txt b/examples/device/audio_test/CMakeLists.txt
index cb321f9a8..f6e10e2ea 100644
--- a/examples/device/audio_test/CMakeLists.txt
+++ b/examples/device/audio_test/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/audio_test/skip.txt b/examples/device/audio_test/skip.txt
index ae9b57f1f..1ee86a485 100644
--- a/examples/device/audio_test/skip.txt
+++ b/examples/device/audio_test/skip.txt
@@ -1,3 +1,3 @@
 mcu:SAMD11
 mcu:SAME5X
-mcu:SAMG
\ No newline at end of file
+mcu:SAMG
diff --git a/examples/device/audio_test/src/main.c b/examples/device/audio_test/src/main.c
index 56961e427..b5ca41d36 100644
--- a/examples/device/audio_test/src/main.c
+++ b/examples/device/audio_test/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Reinhard Panhuber
@@ -100,9 +100,6 @@ int main(void)
     led_blinking_task();
     audio_task();
   }
-
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -291,7 +288,7 @@ bool tud_audio_get_req_entity_cb(uint8_t rhport, tusb_control_request_t const *
 
         // Those are dummy values for now
         ret.bNrChannels = 1;
-        ret.bmChannelConfig = 0;
+        ret.bmChannelConfig = (audio_channel_config_t) 0;
         ret.iChannelNames = 0;
 
         TU_LOG2("    Get terminal connector\r\n");
diff --git a/examples/device/audio_test/src/plot_audio_samples.py b/examples/device/audio_test/src/plot_audio_samples.py
index 2303df3d0..1504684a6 100644
--- a/examples/device/audio_test/src/plot_audio_samples.py
+++ b/examples/device/audio_test/src/plot_audio_samples.py
@@ -32,7 +32,6 @@ if __name__ == '__main__':
     plt.ylabel('Amplitude')
     plt.title('MicNode')
     plt.show()
-    
+
     samples = np.array(myrecording)
     np.savetxt('Output.csv', samples, delimiter=",", fmt='%s')
-    
\ No newline at end of file
diff --git a/examples/device/audio_test/src/usb_descriptors.c b/examples/device/audio_test/src/usb_descriptors.c
index da3e203d7..cc364ee88 100644
--- a/examples/device/audio_test/src/usb_descriptors.c
+++ b/examples/device/audio_test/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -44,7 +44,7 @@ tusb_desc_device_t const desc_device =
     .bDescriptorType    = TUSB_DESC_DEVICE,
     .bcdUSB             = 0x0200,
 
-    // Use Interface Association Descriptor (IAD) for CDC
+    // Use Interface Association Descriptor (IAD) for Audio
     // 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,
@@ -96,7 +96,7 @@ enum
 
 uint8_t const desc_configuration[] =
 {
-    // Interface count, string index, total length, attribute, power in mA
+    // 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 Out & EP In address, EP size
diff --git a/examples/device/audio_test_multi_rate/CMakeLists.txt b/examples/device/audio_test_multi_rate/CMakeLists.txt
index cb321f9a8..f6e10e2ea 100644
--- a/examples/device/audio_test_multi_rate/CMakeLists.txt
+++ b/examples/device/audio_test_multi_rate/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/audio_test_multi_rate/skip.txt b/examples/device/audio_test_multi_rate/skip.txt
index ae9b57f1f..1ee86a485 100644
--- a/examples/device/audio_test_multi_rate/skip.txt
+++ b/examples/device/audio_test_multi_rate/skip.txt
@@ -1,3 +1,3 @@
 mcu:SAMD11
 mcu:SAME5X
-mcu:SAMG
\ No newline at end of file
+mcu:SAMG
diff --git a/examples/device/audio_test_multi_rate/src/main.c b/examples/device/audio_test_multi_rate/src/main.c
index 0e11a509b..4dd53dd34 100644
--- a/examples/device/audio_test_multi_rate/src/main.c
+++ b/examples/device/audio_test_multi_rate/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Reinhard Panhuber
@@ -165,7 +165,7 @@ bool tud_audio_set_itf_cb(uint8_t rhport, tusb_control_request_t const * p_reque
   (void)rhport;
   //uint8_t const itf = tu_u16_low(tu_le16toh(p_request->wIndex));
   uint8_t const alt = tu_u16_low(tu_le16toh(p_request->wValue));
-  
+
   // Clear buffer when streaming format is changed
   if(alt != 0)
   {
@@ -257,7 +257,7 @@ bool tud_audio_set_req_entity_cb(uint8_t rhport, tusb_control_request_t const *
       return false;
     }
   }
-  
+
   // Clock Source unit
   if ( entityID == UAC2_ENTITY_CLOCK )
   {
@@ -279,7 +279,7 @@ bool tud_audio_set_req_entity_cb(uint8_t rhport, tusb_control_request_t const *
         return false;
     }
   }
-  
+
   return false;    // Yet not implemented
 }
 
@@ -491,7 +491,7 @@ bool tud_audio_tx_done_post_load_cb(uint8_t rhport, uint16_t n_bytes_copied, uin
       pData_32[cnt] = (uint32_t)startVal++ << 16U;
     }
   }
-  
+
   return true;
 }
 
diff --git a/examples/device/audio_test_multi_rate/src/plot_audio_samples.py b/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
index 4a5f15a9c..c92e49957 100644
--- a/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
+++ b/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
@@ -32,7 +32,6 @@ if __name__ == '__main__':
     plt.ylabel('Amplitude')
     plt.title('MicNode')
     plt.show()
-    
+
     samples = np.array(myrecording)
     np.savetxt('Output.csv', samples, delimiter=",", fmt='%s')
-    
\ No newline at end of file
diff --git a/examples/device/audio_test_multi_rate/src/tusb_config.h b/examples/device/audio_test_multi_rate/src/tusb_config.h
index d8b6511d6..1c8288bce 100644
--- a/examples/device/audio_test_multi_rate/src/tusb_config.h
+++ b/examples/device/audio_test_multi_rate/src/tusb_config.h
@@ -111,7 +111,7 @@ extern "C" {
 
 // How many formats are used, need to adjust USB descriptor if changed
 #define CFG_TUD_AUDIO_FUNC_1_N_FORMATS                               2
-  
+
 // 16bit in 16bit slots
 #define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX          2
 #define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX                  16
diff --git a/examples/device/audio_test_multi_rate/src/usb_descriptors.c b/examples/device/audio_test_multi_rate/src/usb_descriptors.c
index 92e791a72..2c72edb17 100644
--- a/examples/device/audio_test_multi_rate/src/usb_descriptors.c
+++ b/examples/device/audio_test_multi_rate/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -46,7 +46,7 @@ tusb_desc_device_t const desc_device =
     .bDescriptorType    = TUSB_DESC_DEVICE,
     .bcdUSB             = 0x0200,
 
-    // Use Interface Association Descriptor (IAD) for CDC
+    // Use Interface Association Descriptor (IAD) for Audio
     // 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,
@@ -98,7 +98,7 @@ enum
 
 uint8_t const desc_configuration[] =
 {
-    // Interface count, string index, total length, attribute, power in mA
+    // 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 Out & EP In address, EP size
diff --git a/examples/device/audio_test_multi_rate/src/usb_descriptors.h b/examples/device/audio_test_multi_rate/src/usb_descriptors.h
index 77e2fe6c1..8d8a03e49 100644
--- a/examples/device/audio_test_multi_rate/src/usb_descriptors.h
+++ b/examples/device/audio_test_multi_rate/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2022 HiFiPhile
@@ -99,4 +99,4 @@
   TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000)
 
 
-#endif
\ No newline at end of file
+#endif
diff --git a/examples/device/board_test/CMakeLists.txt b/examples/device/board_test/CMakeLists.txt
index 37113578e..4435bd523 100644
--- a/examples/device/board_test/CMakeLists.txt
+++ b/examples/device/board_test/CMakeLists.txt
@@ -2,28 +2,16 @@ cmake_minimum_required(VERSION 3.5)
 
 include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
 
-# Check for -DFAMILY=
-if(FAMILY MATCHES "^esp32s[2-3]")
-  # use BOARD-Directory name for project id
-  get_filename_component(PROJECT ${CMAKE_CURRENT_SOURCE_DIR} NAME)
-  set(PROJECT ${BOARD}-${PROJECT})
+# gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
+family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
 
-  # TOP is absolute path to root directory of TinyUSB git repo
-  set(TOP "../../..")
-  get_filename_component(TOP "${TOP}" REALPATH)
+project(${PROJECT})
 
-  project(${PROJECT})
-
-else()
-
-  # gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
-  family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
-
-  project(${PROJECT})
-
-  # Checks this example is valid for the family and initializes the project
-  family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
 
+# Other family such as rp2040
+if(NOT FAMILY STREQUAL "espressif")
   add_executable(${PROJECT})
 
   # Example source
diff --git a/examples/device/board_test/src/CMakeLists.txt b/examples/device/board_test/src/CMakeLists.txt
index e4e1f4e9a..8d85dcafd 100644
--- a/examples/device/board_test/src/CMakeLists.txt
+++ b/examples/device/board_test/src/CMakeLists.txt
@@ -1,17 +1,3 @@
-# FAMILY = esp32sx
 idf_component_register(SRCS "main.c"
                     INCLUDE_DIRS "."
-                    REQUIRES freertos soc)
-                    
-file(TO_NATIVE_PATH "${TOP}/hw/bsp/${FAMILY}/boards/${BOARD}/board.cmake" board_cmake)
-
-if(EXISTS ${board_cmake})
-    include(${board_cmake})
-endif()
-
-idf_component_get_property( FREERTOS_ORIG_INCLUDE_PATH freertos ORIG_INCLUDE_PATH)
-target_include_directories(${COMPONENT_TARGET} PUBLIC
-  "${FREERTOS_ORIG_INCLUDE_PATH}"
-  "${TOP}/hw"
-  "${TOP}/src"
-)
+                    REQUIRES boards tinyusb_src)
diff --git a/examples/device/board_test/src/main.c b/examples/device/board_test/src/main.c
index 0289ca15f..b11f6f2bb 100644
--- a/examples/device/board_test/src/main.c
+++ b/examples/device/board_test/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -30,7 +30,7 @@
 #include "bsp/board.h"
 
 //--------------------------------------------------------------------+
-// MACRO CONSTANT TYPEDEF PROTYPES
+// MACRO CONSTANT TYPEDEF PROTOTYPES
 //--------------------------------------------------------------------+
 
 /* Blink pattern
@@ -74,8 +74,6 @@ int main(void)
       board_uart_write(&ch, 1);
     }
   }
-
-  return 0;
 }
 
 #if CFG_TUSB_MCU == OPT_MCU_ESP32S2 || CFG_TUSB_MCU == OPT_MCU_ESP32S3
diff --git a/examples/device/cdc_dual_ports/CMakeLists.txt b/examples/device/cdc_dual_ports/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/cdc_dual_ports/CMakeLists.txt
+++ b/examples/device/cdc_dual_ports/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/cdc_dual_ports/src/main.c b/examples/device/cdc_dual_ports/src/main.c
index 0264f0566..70eaea85d 100644
--- a/examples/device/cdc_dual_ports/src/main.c
+++ b/examples/device/cdc_dual_ports/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -47,8 +47,6 @@ int main(void)
     tud_task(); // tinyusb device task
     cdc_task();
   }
-
-  return 0;
 }
 
 // echo to either Serial0 or Serial1
diff --git a/examples/device/cdc_dual_ports/src/usb_descriptors.c b/examples/device/cdc_dual_ports/src/usb_descriptors.c
index 4eb8c7c27..8be404cc9 100644
--- a/examples/device/cdc_dual_ports/src/usb_descriptors.c
+++ b/examples/device/cdc_dual_ports/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/cdc_msc/CMakeLists.txt b/examples/device/cdc_msc/CMakeLists.txt
index fa6e83b7e..8e4db9d29 100644
--- a/examples/device/cdc_msc/CMakeLists.txt
+++ b/examples/device/cdc_msc/CMakeLists.txt
@@ -26,4 +26,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/cdc_msc/skip.txt b/examples/device/cdc_msc/skip.txt
index d844feae8..eadb6e74a 100644
--- a/examples/device/cdc_msc/skip.txt
+++ b/examples/device/cdc_msc/skip.txt
@@ -1 +1 @@
-mcu:SAMD11
\ No newline at end of file
+mcu:SAMD11
diff --git a/examples/device/cdc_msc/src/main.c b/examples/device/cdc_msc/src/main.c
index c83299e59..6dad73cbf 100644
--- a/examples/device/cdc_msc/src/main.c
+++ b/examples/device/cdc_msc/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -65,8 +65,6 @@ int main(void)
 
     cdc_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/cdc_msc/src/msc_disk.c b/examples/device/cdc_msc/src/msc_disk.c
index e67e381ce..f8f37a577 100644
--- a/examples/device/cdc_msc/src/msc_disk.c
+++ b/examples/device/cdc_msc/src/msc_disk.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/cdc_msc/src/usb_descriptors.c b/examples/device/cdc_msc/src/usb_descriptors.c
index 6b59ed50f..44c849277 100644
--- a/examples/device/cdc_msc/src/usb_descriptors.c
+++ b/examples/device/cdc_msc/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/cdc_msc_freertos/CMakeLists.txt b/examples/device/cdc_msc_freertos/CMakeLists.txt
index cbd75efd6..714e5333b 100644
--- a/examples/device/cdc_msc_freertos/CMakeLists.txt
+++ b/examples/device/cdc_msc_freertos/CMakeLists.txt
@@ -1,10 +1,5 @@
 cmake_minimum_required(VERSION 3.5)
 
-# TOP is absolute path to root directory of TinyUSB git repo
-# needed for esp32sx build. TODO could be removed later on
-set(TOP "../../..")
-get_filename_component(TOP "${TOP}" REALPATH)
-
 include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
 
 # gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
@@ -16,7 +11,6 @@ project(${PROJECT})
 family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
 
 # Check for -DFAMILY=
-if(FAMILY MATCHES "^esp32s[2-3]")
-else()
+if(NOT FAMILY STREQUAL "espressif")
   message(FATAL_ERROR "Invalid FAMILY specified: ${FAMILY}")
 endif()
diff --git a/examples/device/cdc_msc_freertos/Makefile b/examples/device/cdc_msc_freertos/Makefile
index e2bbc2268..73b4ce608 100644
--- a/examples/device/cdc_msc_freertos/Makefile
+++ b/examples/device/cdc_msc_freertos/Makefile
@@ -3,7 +3,7 @@ DEPS_SUBMODULES += lib/FreeRTOS-Kernel
 include ../../make.mk
 
 FREERTOS_SRC = lib/FreeRTOS-Kernel
-FREERTOS_PORTABLE_SRC= $(FREERTOS_SRC)/portable/$(if $(USE_IAR),IAR,GCC)/$(FREERTOS_PORT)
+FREERTOS_PORTABLE_PATH= $(FREERTOS_SRC)/portable/$(if $(USE_IAR),IAR,GCC)
 
 INC += \
 	src \
@@ -11,7 +11,7 @@ INC += \
 	$(TOP)/hw \
 	$(TOP)/$(FREERTOS_SRC)/include \
 	$(TOP)/$(FREERTOS_PORTABLE_SRC)
-	
+
 # Example source
 EXAMPLE_SOURCE = \
 	src/freertos_hook.c \
@@ -27,10 +27,10 @@ SRC_C += \
 	$(FREERTOS_SRC)/queue.c \
 	$(FREERTOS_SRC)/tasks.c \
 	$(FREERTOS_SRC)/timers.c \
-	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_PORTABLE_SRC)/*.c))
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.c))
 
 SRC_S += \
-	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_PORTABLE_SRC)/*.s))
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.s))
 
 # include heap manage if configSUPPORT_DYNAMIC_ALLOCATION = 1
 # SRC_C += $(FREERTOS_SRC)/portable/MemMang/heap_1.c
diff --git a/examples/device/cdc_msc_freertos/src/CMakeLists.txt b/examples/device/cdc_msc_freertos/src/CMakeLists.txt
index 9216e2b49..b77a68c8d 100644
--- a/examples/device/cdc_msc_freertos/src/CMakeLists.txt
+++ b/examples/device/cdc_msc_freertos/src/CMakeLists.txt
@@ -1,35 +1,3 @@
 idf_component_register(SRCS "main.c" "usb_descriptors.c" "msc_disk.c"
                     INCLUDE_DIRS "."
-                    REQUIRES freertos soc)
-
-file(TO_NATIVE_PATH "${TOP}/hw/bsp/${FAMILY}/boards/${BOARD}/board.cmake" board_cmake)
-
-if(EXISTS ${board_cmake})
-    include(${board_cmake})
-endif()
-
-target_include_directories(${COMPONENT_TARGET} PUBLIC
-  "${TOP}/hw"
-  "${TOP}/src"
-)
-
-target_compile_definitions(${COMPONENT_TARGET} PUBLIC
-  ESP_PLATFORM
-)
-
-target_sources(${COMPONENT_TARGET} PUBLIC
-  "${TOP}/src/tusb.c"
-  "${TOP}/src/common/tusb_fifo.c"
-  "${TOP}/src/device/usbd.c"
-  "${TOP}/src/device/usbd_control.c"
-  "${TOP}/src/class/cdc/cdc_device.c"
-  "${TOP}/src/class/dfu/dfu_rt_device.c"
-  "${TOP}/src/class/hid/hid_device.c"
-  "${TOP}/src/class/midi/midi_device.c"
-  "${TOP}/src/class/msc/msc_device.c"
-  "${TOP}/src/class/net/ecm_rndis_device.c"
-  "${TOP}/src/class/net/ncm_device.c"
-  "${TOP}/src/class/usbtmc/usbtmc_device.c"
-  "${TOP}/src/class/vendor/vendor_device.c"
-  "${TOP}/src/portable/synopsys/dwc2/dcd_dwc2.c"
-)
+                    REQUIRES boards tinyusb_src)
diff --git a/examples/device/cdc_msc_freertos/src/main.c b/examples/device/cdc_msc_freertos/src/main.c
index cfb14aa2b..0e8a24d02 100644
--- a/examples/device/cdc_msc_freertos/src/main.c
+++ b/examples/device/cdc_msc_freertos/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/cdc_msc_freertos/src/msc_disk.c b/examples/device/cdc_msc_freertos/src/msc_disk.c
index a895f4738..707c8d578 100644
--- a/examples/device/cdc_msc_freertos/src/msc_disk.c
+++ b/examples/device/cdc_msc_freertos/src/msc_disk.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/cdc_msc_freertos/src/tusb_config.h b/examples/device/cdc_msc_freertos/src/tusb_config.h
index 0ec8896b9..91efe7d40 100644
--- a/examples/device/cdc_msc_freertos/src/tusb_config.h
+++ b/examples/device/cdc_msc_freertos/src/tusb_config.h
@@ -54,7 +54,9 @@
 #endif
 
 // This examples use FreeRTOS
+#ifndef CFG_TUSB_OS
 #define CFG_TUSB_OS           OPT_OS_FREERTOS
+#endif
 
 // Espressif IDF requires "freertos/" prefix in include path
 #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
diff --git a/examples/device/cdc_msc_freertos/src/usb_descriptors.c b/examples/device/cdc_msc_freertos/src/usb_descriptors.c
index 30a712275..822442724 100644
--- a/examples/device/cdc_msc_freertos/src/usb_descriptors.c
+++ b/examples/device/cdc_msc_freertos/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/dfu/src/main.c b/examples/device/dfu/src/main.c
index 6bb183819..5f37f25e1 100644
--- a/examples/device/dfu/src/main.c
+++ b/examples/device/dfu/src/main.c
@@ -82,8 +82,6 @@ int main(void)
     tud_task(); // tinyusb device task
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/dfu_runtime/CMakeLists.txt b/examples/device/dfu_runtime/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/dfu_runtime/CMakeLists.txt
+++ b/examples/device/dfu_runtime/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/dfu_runtime/src/main.c b/examples/device/dfu_runtime/src/main.c
index bd9a91c27..4ec3cb188 100644
--- a/examples/device/dfu_runtime/src/main.c
+++ b/examples/device/dfu_runtime/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -77,8 +77,6 @@ int main(void)
     tud_task(); // tinyusb device task
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/dynamic_configuration/CMakeLists.txt b/examples/device/dynamic_configuration/CMakeLists.txt
index fa6e83b7e..8e4db9d29 100644
--- a/examples/device/dynamic_configuration/CMakeLists.txt
+++ b/examples/device/dynamic_configuration/CMakeLists.txt
@@ -26,4 +26,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/dynamic_configuration/skip.txt b/examples/device/dynamic_configuration/skip.txt
index d844feae8..eadb6e74a 100644
--- a/examples/device/dynamic_configuration/skip.txt
+++ b/examples/device/dynamic_configuration/skip.txt
@@ -1 +1 @@
-mcu:SAMD11
\ No newline at end of file
+mcu:SAMD11
diff --git a/examples/device/dynamic_configuration/src/main.c b/examples/device/dynamic_configuration/src/main.c
index 33a603343..578f01d8c 100644
--- a/examples/device/dynamic_configuration/src/main.c
+++ b/examples/device/dynamic_configuration/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -66,8 +66,6 @@ int main(void)
     cdc_task();
     midi_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/dynamic_configuration/src/msc_disk.c b/examples/device/dynamic_configuration/src/msc_disk.c
index e8cb03fdd..27856a1a4 100644
--- a/examples/device/dynamic_configuration/src/msc_disk.c
+++ b/examples/device/dynamic_configuration/src/msc_disk.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/dynamic_configuration/src/usb_descriptors.c b/examples/device/dynamic_configuration/src/usb_descriptors.c
index 092229b99..0590bd679 100644
--- a/examples/device/dynamic_configuration/src/usb_descriptors.c
+++ b/examples/device/dynamic_configuration/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_boot_interface/CMakeLists.txt b/examples/device/hid_boot_interface/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/hid_boot_interface/CMakeLists.txt
+++ b/examples/device/hid_boot_interface/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/hid_boot_interface/Makefile b/examples/device/hid_boot_interface/Makefile
index d58a539e8..b3f2cc588 100644
--- a/examples/device/hid_boot_interface/Makefile
+++ b/examples/device/hid_boot_interface/Makefile
@@ -8,7 +8,7 @@ INC += \
 EXAMPLE_SOURCE = \
 	src/main.c \
 	src/usb_descriptors.c
-	
+
 SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
 
 include ../../rules.mk
diff --git a/examples/device/hid_boot_interface/src/main.c b/examples/device/hid_boot_interface/src/main.c
index b13428041..1a155996a 100644
--- a/examples/device/hid_boot_interface/src/main.c
+++ b/examples/device/hid_boot_interface/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_boot_interface/src/usb_descriptors.c b/examples/device/hid_boot_interface/src/usb_descriptors.c
index a0d7e9f15..10345ab41 100644
--- a/examples/device/hid_boot_interface/src/usb_descriptors.c
+++ b/examples/device/hid_boot_interface/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_boot_interface/src/usb_descriptors.h b/examples/device/hid_boot_interface/src/usb_descriptors.h
index 57cf0e2c0..6fee9e223 100644
--- a/examples/device/hid_boot_interface/src/usb_descriptors.h
+++ b/examples/device/hid_boot_interface/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_composite/CMakeLists.txt b/examples/device/hid_composite/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/hid_composite/CMakeLists.txt
+++ b/examples/device/hid_composite/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/hid_composite/src/main.c b/examples/device/hid_composite/src/main.c
index 05315f266..8d0e6bece 100644
--- a/examples/device/hid_composite/src/main.c
+++ b/examples/device/hid_composite/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -67,8 +67,6 @@ int main(void)
 
     hid_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/hid_composite/src/usb_descriptors.c b/examples/device/hid_composite/src/usb_descriptors.c
index 2988baee2..347bbf29a 100644
--- a/examples/device/hid_composite/src/usb_descriptors.c
+++ b/examples/device/hid_composite/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_composite/src/usb_descriptors.h b/examples/device/hid_composite/src/usb_descriptors.h
index ca8925ad9..e733d31dd 100644
--- a/examples/device/hid_composite/src/usb_descriptors.h
+++ b/examples/device/hid_composite/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_composite_freertos/CMakeLists.txt b/examples/device/hid_composite_freertos/CMakeLists.txt
index ed734b954..714e5333b 100644
--- a/examples/device/hid_composite_freertos/CMakeLists.txt
+++ b/examples/device/hid_composite_freertos/CMakeLists.txt
@@ -1,17 +1,16 @@
 cmake_minimum_required(VERSION 3.5)
 
-# use BOARD-Directory name for project id
-get_filename_component(PROJECT ${CMAKE_CURRENT_SOURCE_DIR} NAME)
-set(PROJECT ${BOARD}-${PROJECT})
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
 
-# TOP is absolute path to root directory of TinyUSB git repo
-set(TOP "../../..")
-get_filename_component(TOP "${TOP}" REALPATH)
+# gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
+family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
+
+project(${PROJECT})
+
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
 
 # Check for -DFAMILY=
-if(FAMILY MATCHES "^esp32s[2-3]")
-  include(${TOP}/hw/bsp/${FAMILY}/family.cmake)
-  project(${PROJECT})
-else()
+if(NOT FAMILY STREQUAL "espressif")
   message(FATAL_ERROR "Invalid FAMILY specified: ${FAMILY}")
 endif()
diff --git a/examples/device/hid_composite_freertos/Makefile b/examples/device/hid_composite_freertos/Makefile
index 099a43893..9d30fddf7 100644
--- a/examples/device/hid_composite_freertos/Makefile
+++ b/examples/device/hid_composite_freertos/Makefile
@@ -3,7 +3,7 @@ DEPS_SUBMODULES += lib/FreeRTOS-Kernel
 include ../../make.mk
 
 FREERTOS_SRC = lib/FreeRTOS-Kernel
-FREERTOS_PORTABLE_SRC= $(FREERTOS_SRC)/portable/$(if $(USE_IAR),IAR,GCC)/$(FREERTOS_PORT)
+FREERTOS_PORTABLE_PATH= $(FREERTOS_SRC)/portable/$(if $(USE_IAR),IAR,GCC)
 
 INC += \
 	src \
@@ -17,7 +17,7 @@ EXAMPLE_SOURCE = \
 	src/freertos_hook.c \
 	src/main.c \
 	src/usb_descriptors.c
-	
+
 SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
 
 # FreeRTOS source, all files in port folder
@@ -26,10 +26,10 @@ SRC_C += \
 	$(FREERTOS_SRC)/queue.c \
 	$(FREERTOS_SRC)/tasks.c \
 	$(FREERTOS_SRC)/timers.c \
-	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_PORTABLE_SRC)/*.c))
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.c))
 
 SRC_S += \
-	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_PORTABLE_SRC)/*.s))
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.s))
 
 # include heap manage if configSUPPORT_DYNAMIC_ALLOCATION = 1
 # SRC_C += $(FREERTOS_SRC)/portable/MemMang/heap_1.c
diff --git a/examples/device/hid_composite_freertos/src/CMakeLists.txt b/examples/device/hid_composite_freertos/src/CMakeLists.txt
index 25da8fcd7..6d912854f 100644
--- a/examples/device/hid_composite_freertos/src/CMakeLists.txt
+++ b/examples/device/hid_composite_freertos/src/CMakeLists.txt
@@ -1,35 +1,3 @@
 idf_component_register(SRCS "main.c" "usb_descriptors.c"
                     INCLUDE_DIRS "."
-                    REQUIRES freertos soc)
-
-file(TO_NATIVE_PATH "${TOP}/hw/bsp/${FAMILY}/boards/${BOARD}/board.cmake" board_cmake)
-
-if(EXISTS ${board_cmake})
-    include(${board_cmake})
-endif()
-
-target_include_directories(${COMPONENT_TARGET} PUBLIC
-  "${TOP}/hw"
-  "${TOP}/src"
-)
-
-target_compile_definitions(${COMPONENT_TARGET} PUBLIC
-  ESP_PLATFORM
-)
-
-target_sources(${COMPONENT_TARGET} PUBLIC
-  "${TOP}/src/tusb.c"
-  "${TOP}/src/common/tusb_fifo.c"
-  "${TOP}/src/device/usbd.c"
-  "${TOP}/src/device/usbd_control.c"
-  "${TOP}/src/class/cdc/cdc_device.c"
-  "${TOP}/src/class/dfu/dfu_rt_device.c"
-  "${TOP}/src/class/hid/hid_device.c"
-  "${TOP}/src/class/midi/midi_device.c"
-  "${TOP}/src/class/msc/msc_device.c"
-  "${TOP}/src/class/net/ecm_rndis_device.c"
-  "${TOP}/src/class/net/ncm_device.c"
-  "${TOP}/src/class/usbtmc/usbtmc_device.c"
-  "${TOP}/src/class/vendor/vendor_device.c"
-  "${TOP}/src/portable/synopsys/dwc2/dcd_dwc2.c"
-)
+                    REQUIRES boards tinyusb_src)
diff --git a/examples/device/hid_composite_freertos/src/main.c b/examples/device/hid_composite_freertos/src/main.c
index 7c9619c4b..ca02af100 100644
--- a/examples/device/hid_composite_freertos/src/main.c
+++ b/examples/device/hid_composite_freertos/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_composite_freertos/src/tusb_config.h b/examples/device/hid_composite_freertos/src/tusb_config.h
index 935ae9453..3ba9bf311 100644
--- a/examples/device/hid_composite_freertos/src/tusb_config.h
+++ b/examples/device/hid_composite_freertos/src/tusb_config.h
@@ -54,7 +54,9 @@
 #endif
 
 // This examples use FreeRTOS
+#ifndef CFG_TUSB_OS
 #define CFG_TUSB_OS           OPT_OS_FREERTOS
+#endif
 
 // Espressif IDF requires "freertos/" prefix in include path
 #if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
diff --git a/examples/device/hid_composite_freertos/src/usb_descriptors.c b/examples/device/hid_composite_freertos/src/usb_descriptors.c
index 4df12d3db..30f327d5e 100644
--- a/examples/device/hid_composite_freertos/src/usb_descriptors.c
+++ b/examples/device/hid_composite_freertos/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_composite_freertos/src/usb_descriptors.h b/examples/device/hid_composite_freertos/src/usb_descriptors.h
index ca8925ad9..e733d31dd 100644
--- a/examples/device/hid_composite_freertos/src/usb_descriptors.h
+++ b/examples/device/hid_composite_freertos/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_generic_inout/CMakeLists.txt b/examples/device/hid_generic_inout/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/hid_generic_inout/CMakeLists.txt
+++ b/examples/device/hid_generic_inout/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/hid_generic_inout/hid_test.js b/examples/device/hid_generic_inout/hid_test.js
index daa958fd5..16bc723e2 100644
--- a/examples/device/hid_generic_inout/hid_test.js
+++ b/examples/device/hid_generic_inout/hid_test.js
@@ -48,7 +48,7 @@ if( deviceInfo ) {
 
 
 function anySupportedBoard(d) {
-	
+
 	for (var key in boards) {
 	    if (boards.hasOwnProperty(key)) {
 	        if (isDevice(boards[key],d)) {
@@ -65,4 +65,3 @@ function isDevice(board,d){
 	// product id 0xff is matches all
 	return d.vendorId==board[0] && (d.productId==board[1] || board[1] == 0xFFFF);
 }
-
diff --git a/examples/device/hid_generic_inout/src/main.c b/examples/device/hid_generic_inout/src/main.c
index 5b7daf118..5db8f5581 100644
--- a/examples/device/hid_generic_inout/src/main.c
+++ b/examples/device/hid_generic_inout/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -88,8 +88,6 @@ int main(void)
     tud_task(); // tinyusb device task
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/hid_generic_inout/src/usb_descriptors.c b/examples/device/hid_generic_inout/src/usb_descriptors.c
index cd4838407..8377a0f47 100644
--- a/examples/device/hid_generic_inout/src/usb_descriptors.c
+++ b/examples/device/hid_generic_inout/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/hid_multiple_interface/CMakeLists.txt b/examples/device/hid_multiple_interface/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/hid_multiple_interface/CMakeLists.txt
+++ b/examples/device/hid_multiple_interface/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/hid_multiple_interface/src/main.c b/examples/device/hid_multiple_interface/src/main.c
index 29ba74398..72240b208 100644
--- a/examples/device/hid_multiple_interface/src/main.c
+++ b/examples/device/hid_multiple_interface/src/main.c
@@ -71,8 +71,6 @@ int main(void)
 
     hid_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/midi_test/CMakeLists.txt b/examples/device/midi_test/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/midi_test/CMakeLists.txt
+++ b/examples/device/midi_test/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/midi_test/src/main.c b/examples/device/midi_test/src/main.c
index 3310348bd..2c3e9d954 100644
--- a/examples/device/midi_test/src/main.c
+++ b/examples/device/midi_test/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -71,9 +71,6 @@ int main(void)
     led_blinking_task();
     midi_task();
   }
-
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/midi_test/src/usb_descriptors.c b/examples/device/midi_test/src/usb_descriptors.c
index c84a873b1..4845dcf57 100644
--- a/examples/device/midi_test/src/usb_descriptors.c
+++ b/examples/device/midi_test/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/msc_dual_lun/CMakeLists.txt b/examples/device/msc_dual_lun/CMakeLists.txt
index 9e834ae21..9188ab06c 100644
--- a/examples/device/msc_dual_lun/CMakeLists.txt
+++ b/examples/device/msc_dual_lun/CMakeLists.txt
@@ -26,4 +26,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/msc_dual_lun/skip.txt b/examples/device/msc_dual_lun/skip.txt
index 3549c702a..47e561cf0 100644
--- a/examples/device/msc_dual_lun/skip.txt
+++ b/examples/device/msc_dual_lun/skip.txt
@@ -1,2 +1,2 @@
 mcu:SAMD11
-mcu:MKL25ZXX
\ No newline at end of file
+mcu:MKL25ZXX
diff --git a/examples/device/msc_dual_lun/src/main.c b/examples/device/msc_dual_lun/src/main.c
index 96790d20c..c7f6de7bf 100644
--- a/examples/device/msc_dual_lun/src/main.c
+++ b/examples/device/msc_dual_lun/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -62,8 +62,6 @@ int main(void)
     tud_task(); // tinyusb device task
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/msc_dual_lun/src/msc_disk_dual.c b/examples/device/msc_dual_lun/src/msc_disk_dual.c
index 2b773b43b..b1047acdb 100644
--- a/examples/device/msc_dual_lun/src/msc_disk_dual.c
+++ b/examples/device/msc_dual_lun/src/msc_disk_dual.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/msc_dual_lun/src/usb_descriptors.c b/examples/device/msc_dual_lun/src/usb_descriptors.c
index d8dbb5ce3..2de81111c 100644
--- a/examples/device/msc_dual_lun/src/usb_descriptors.c
+++ b/examples/device/msc_dual_lun/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/net_lwip_webserver/CMakeLists.txt b/examples/device/net_lwip_webserver/CMakeLists.txt
index 9fe1a325e..5f1e37931 100644
--- a/examples/device/net_lwip_webserver/CMakeLists.txt
+++ b/examples/device/net_lwip_webserver/CMakeLists.txt
@@ -80,4 +80,4 @@ if (EXISTS ${TOP}/lib/lwip/src)
     # Configure compilation flags and libraries for the example... see the corresponding function
     # in hw/bsp/FAMILY/family.cmake for details.
     family_configure_device_example(${PROJECT})
-endif()
\ No newline at end of file
+endif()
diff --git a/examples/device/net_lwip_webserver/skip.txt b/examples/device/net_lwip_webserver/skip.txt
index 68761b058..77c7ec63a 100644
--- a/examples/device/net_lwip_webserver/skip.txt
+++ b/examples/device/net_lwip_webserver/skip.txt
@@ -7,4 +7,5 @@ mcu:STM32L0
 mcu:MKL25ZXX
 family:broadcom_64bit
 family:broadcom_32bit
-board:curiosity_nano
\ No newline at end of file
+board:curiosity_nano
+board:frdm_kl25z
diff --git a/examples/device/net_lwip_webserver/src/arch/cc.h b/examples/device/net_lwip_webserver/src/arch/cc.h
index 56a0cacf7..9f30b91cb 100644
--- a/examples/device/net_lwip_webserver/src/arch/cc.h
+++ b/examples/device/net_lwip_webserver/src/arch/cc.h
@@ -1,8 +1,8 @@
 /*
  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
- * All rights reserved. 
- * 
- * Redistribution and use in source and binary forms, with or without modification, 
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice,
@@ -11,21 +11,21 @@
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission. 
+ *    derived from this software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
  *
  * This file is part of the lwIP TCP/IP stack.
- * 
+ *
  * Author: Adam Dunkels <[email protected]>
  *
  */
@@ -42,7 +42,7 @@ typedef int sys_prot_t;
 #if defined (__ICCARM__)
 
 #define PACK_STRUCT_BEGIN
-#define PACK_STRUCT_STRUCT 
+#define PACK_STRUCT_STRUCT
 #define PACK_STRUCT_END
 #define PACK_STRUCT_FIELD(x) x
 #define PACK_STRUCT_USE_INCLUDES
@@ -50,7 +50,7 @@ typedef int sys_prot_t;
 #elif defined (__CC_ARM)
 
 #define PACK_STRUCT_BEGIN __packed
-#define PACK_STRUCT_STRUCT 
+#define PACK_STRUCT_STRUCT
 #define PACK_STRUCT_END
 #define PACK_STRUCT_FIELD(x) x
 
diff --git a/examples/device/net_lwip_webserver/src/lwipopts.h b/examples/device/net_lwip_webserver/src/lwipopts.h
index a215017c7..336c9243d 100644
--- a/examples/device/net_lwip_webserver/src/lwipopts.h
+++ b/examples/device/net_lwip_webserver/src/lwipopts.h
@@ -1,8 +1,8 @@
 /*
  * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
- * All rights reserved. 
- * 
- * Redistribution and use in source and binary forms, with or without modification, 
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * 1. Redistributions of source code must retain the above copyright notice,
@@ -11,21 +11,21 @@
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission. 
+ *    derived from this software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  * OF SUCH DAMAGE.
  *
  * This file is part of the lwIP TCP/IP stack.
- * 
+ *
  * Author: Simon Goldschmidt
  *
  */
diff --git a/examples/device/net_lwip_webserver/src/main.c b/examples/device/net_lwip_webserver/src/main.c
index 33b4d38b6..19a0eae9d 100644
--- a/examples/device/net_lwip_webserver/src/main.c
+++ b/examples/device/net_lwip_webserver/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Peter Lawrence
@@ -39,7 +39,7 @@ and likely their manufacturer has not tested such functionality.  Some code work
 The smartphone may only have an ECM driver, but refuse to automatically pick ECM (unlike the OSes above);
 try modifying ./examples/devices/net_lwip_webserver/usb_descriptors.c so that CONFIG_ID_ECM is default.
 
-The smartphone may be artificially picky about which Ethernet MAC address to recognize; if this happens, 
+The smartphone may be artificially picky about which Ethernet MAC address to recognize; if this happens,
 try changing the first byte of tud_network_mac_address[] below from 0x02 to 0x00 (clearing bit 1).
 */
 
@@ -64,7 +64,7 @@ static struct pbuf *received_frame;
 /* this is used by this code, ./class/net/net_driver.c, and usb_descriptors.c */
 /* ideally speaking, this should be generated from the hardware's unique ID (if available) */
 /* it is suggested that the first byte is 0x02 to indicate a link-local address */
-const uint8_t tud_network_mac_address[6] = {0x02,0x02,0x84,0x6A,0x96,0x00};
+uint8_t tud_network_mac_address[6] = {0x02,0x02,0x84,0x6A,0x96,0x00};
 
 /* network parameters of this MCU */
 static const ip4_addr_t ipaddr  = INIT_IP4(192, 168, 7, 1);
@@ -170,7 +170,7 @@ bool dns_query_proc(const char *name, ip4_addr_t *addr)
 
 bool tud_network_recv_cb(const uint8_t *src, uint16_t size)
 {
-  /* this shouldn't happen, but if we get another packet before 
+  /* this shouldn't happen, but if we get another packet before
   parsing the previous, we must signal our inability to accept it */
   if (received_frame) return false;
 
diff --git a/examples/device/net_lwip_webserver/src/usb_descriptors.c b/examples/device/net_lwip_webserver/src/usb_descriptors.c
index bee51790a..3c0ed3db7 100644
--- a/examples/device/net_lwip_webserver/src/usb_descriptors.c
+++ b/examples/device/net_lwip_webserver/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -77,7 +77,7 @@ tusb_desc_device_t const desc_device =
     .bDeviceClass       = TUSB_CLASS_MISC,
     .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
     .bDeviceProtocol    = MISC_PROTOCOL_IAD,
-    
+
     .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
 
     .idVendor           = 0xCafe,
diff --git a/examples/device/uac2_headset/CMakeLists.txt b/examples/device/uac2_headset/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/uac2_headset/CMakeLists.txt
+++ b/examples/device/uac2_headset/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/uac2_headset/src/main.c b/examples/device/uac2_headset/src/main.c
index 01707d51b..19a3f7bae 100644
--- a/examples/device/uac2_headset/src/main.c
+++ b/examples/device/uac2_headset/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Jerzy Kasenberg
@@ -113,8 +113,6 @@ int main(void)
     audio_task();
     led_blinking_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
@@ -176,7 +174,7 @@ static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t
         rangef.subrange[i].bRes = 0;
         TU_LOG1("Range %d (%d, %d, %d)\r\n", i, (int)rangef.subrange[i].bMin, (int)rangef.subrange[i].bMax, (int)rangef.subrange[i].bRes);
       }
-      
+
       return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &rangef, sizeof(rangef));
     }
   }
diff --git a/examples/device/uac2_headset/src/usb_descriptors.c b/examples/device/uac2_headset/src/usb_descriptors.c
index 07c86b903..682774b72 100644
--- a/examples/device/uac2_headset/src/usb_descriptors.c
+++ b/examples/device/uac2_headset/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Ha Thach (tinyusb.org)
@@ -46,7 +46,7 @@ tusb_desc_device_t const desc_device =
     .bDescriptorType    = TUSB_DESC_DEVICE,
     .bcdUSB             = 0x0200,
 
-    // Use Interface Association Descriptor (IAD) for CDC
+    // Use Interface Association Descriptor (IAD) for Audio
     // 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,
@@ -106,7 +106,7 @@ uint8_t const * tud_descriptor_device_cb(void)
 
 uint8_t const desc_configuration[] =
 {
-    // Interface count, string index, total length, attribute, power in mA
+    // 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 Out & EP In address, EP size
diff --git a/examples/device/uac2_headset/src/usb_descriptors.h b/examples/device/uac2_headset/src/usb_descriptors.h
index 342b4fac1..457e69882 100644
--- a/examples/device/uac2_headset/src/usb_descriptors.h
+++ b/examples/device/uac2_headset/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Jerzy Kasenbreg
@@ -114,7 +114,7 @@ enum
     /* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
     TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX),\
     /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
-    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ADAPTIVE | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX), /*_interval*/ 0x01),\
+    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ADAPTIVE | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX), /*_interval*/ 0x01),\
     /* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
     TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_MILLISEC, /*_lockdelay*/ 0x0001),\
     /* Interface 1, Alternate 2 - alternate interface for data streaming */\
@@ -124,7 +124,7 @@ enum
     /* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
     TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_RX),\
     /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
-    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ADAPTIVE | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX), /*_interval*/ 0x01),\
+    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epout, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ADAPTIVE | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_RX), /*_interval*/ 0x01),\
     /* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
     TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_MILLISEC, /*_lockdelay*/ 0x0001),\
     /* Standard AS Interface Descriptor(4.9.1) */\
@@ -138,7 +138,7 @@ enum
     /* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
     TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_TX),\
     /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
-    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX), /*_interval*/ 0x01),\
+    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX), /*_interval*/ 0x01),\
     /* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
     TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000),\
     /* Interface 2, Alternate 2 - alternate interface for data streaming */\
@@ -148,7 +148,7 @@ enum
     /* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
     TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_TX),\
     /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
-    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX), /*_interval*/ 0x01),\
+    TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (uint8_t) (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX), /*_interval*/ 0x01),\
     /* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
     TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000)
 
diff --git a/examples/device/usbtmc/CMakeLists.txt b/examples/device/usbtmc/CMakeLists.txt
index c49603c26..b4678dc5e 100644
--- a/examples/device/usbtmc/CMakeLists.txt
+++ b/examples/device/usbtmc/CMakeLists.txt
@@ -26,4 +26,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/usbtmc/src/main.c b/examples/device/usbtmc/src/main.c
index 6945d8743..2bba336f1 100644
--- a/examples/device/usbtmc/src/main.c
+++ b/examples/device/usbtmc/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -63,8 +63,6 @@ int main(void)
     led_blinking_task();
     usbtmc_app_task_iter();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/usbtmc/src/usbtmc_app.c b/examples/device/usbtmc/src/usbtmc_app.c
index 503ee3071..72989b4fe 100644
--- a/examples/device/usbtmc/src/usbtmc_app.c
+++ b/examples/device/usbtmc/src/usbtmc_app.c
@@ -88,14 +88,6 @@ static size_t buffer_tx_ix; // for transmitting using multiple transfers
 static uint8_t buffer[225]; // A few packets long should be enough.
 
 
-static usbtmc_msg_dev_dep_msg_in_header_t rspMsg = {
-    .bmTransferAttributes =
-    {
-      .EOM = 1,
-      .UsingTermChar = 0
-    }
-};
-
 void tud_usbtmc_open_cb(uint8_t interface_id)
 {
   (void)interface_id;
@@ -148,12 +140,14 @@ bool tud_usbtmc_msg_data_cb(void *data, size_t len, bool transfer_complete)
   queryState = transfer_complete;
   idnQuery = 0;
 
-  if ( transfer_complete && (len >= 4) && (!strncmp("*idn?", data, 4) || !strncmp("*IDN?", data, 4)) )
+  if ( transfer_complete && (len >= 4) &&
+       (!strncmp("*idn?", data, 4) || !strncmp("*IDN?", data, 4)) )
   {
     idnQuery = 1;
   }
 
-  if ( transfer_complete && (!strncmp("delay ", data, 5) || !strncmp("DELAY ", data, 5)) )
+  if ( transfer_complete &&
+       (!strncmp("delay ", data, 5) || !strncmp("DELAY ", data, 5)) )
   {
     queryState = 0;
     int d = atoi((char*)data + 5);
@@ -185,9 +179,6 @@ static unsigned int msgReqLen;
 
 bool tud_usbtmc_msgBulkIn_request_cb(usbtmc_msg_request_dev_dep_in const * request)
 {
-  rspMsg.header.MsgID = request->header.MsgID,
-  rspMsg.header.bTag = request->header.bTag,
-  rspMsg.header.bTagInverse = request->header.bTagInverse;
   msgReqLen = request->TransferSize;
 
 #ifdef xDEBUG
@@ -251,7 +242,6 @@ void usbtmc_app_task_iter(void) {
     break;
   default:
     TU_ASSERT(false,);
-    return;
   }
 }
 
diff --git a/examples/device/usbtmc/visaQuery.py b/examples/device/usbtmc/visaQuery.py
index c4e5ad2b9..ca65daf97 100644
--- a/examples/device/usbtmc/visaQuery.py
+++ b/examples/device/usbtmc/visaQuery.py
@@ -36,8 +36,8 @@ def test_trig():
 	time.sleep(0.3) # SRQ may have some delay
 	assert (inst.read_stb() & 0x40), "SRQ not set after 0.3 seconds"
 	assert (inst.read_stb() == 0)
-	
-	
+
+
 def test_mav():
 	inst.write("delay 50")
 	inst.read_stb() # clear STB
@@ -45,15 +45,15 @@ def test_mav():
 	inst.write("123")
 	time.sleep(0.3)
 	assert (inst.read_stb() & 0x10), "MAV not set after 0.5 seconds"
-	
+
 	rsp = inst.read()
 	assert(rsp == "123\r\n")
-	
-	
+
+
 def test_srq():
 	assert (inst.read_stb() == 0)
 	inst.write("123")
-	
+
 	#inst.enable_event(pyvisa.constants.VI_EVENT_SERVICE_REQ, pyvisa.constants.VI_QUEUE)
 	#waitrsp = inst.wait_on_event(pyvisa.constants.VI_EVENT_SERVICE_REQ, 5000)
 	#inst.discard_events(pyvisa.constants.VI_EVENT_SERVICE_REQ, pyvisa.constants.VI_QUEUE)
@@ -64,7 +64,7 @@ def test_srq():
 	assert (stb == 0x50),msg
 
 	assert (inst.read_stb() == 0x10), "SRQ set at second read!"
-	
+
 	rsp = inst.read()
 	assert(rsp == "123\r\n")
 
@@ -110,7 +110,7 @@ def test_abort_in():
 	inst.timeout = 800
 	y = inst.read()
 	assert(y == "xxx\r\n")
-	
+
 def test_indicate():
 	# perform indicator pulse
 	usb_iface = inst.get_visa_attribute(pyvisa.constants.VI_ATTR_USB_INTFC_NUM)
@@ -120,8 +120,8 @@ def test_indicate():
 		assert(retv == b'\x01')
 	else:
 		assert((retv[1] == pyvisa.constants.StatusCode(0)) and (retv[0] == b'\x01')), f"indicator pulse failed: retv={retv}"
-	
-	
+
+
 def test_multi_read():
 	old_chunk_size = inst.chunk_size
 	longstr = "0123456789abcdefghijklmnopqrstuvwxyz" * 10
@@ -133,7 +133,7 @@ def test_multi_read():
 	y = inst.read()
 	assert (x + "\r\n" == y)
 	#inst.chunk_size = old_chunk_size
-	
+
 def test_stall_ep0():
 	usb_iface = inst.get_visa_attribute(pyvisa.constants.VI_ATTR_USB_INTFC_NUM)
 	inst.read_stb()
@@ -143,7 +143,7 @@ def test_stall_ep0():
 		assert(False)
 	except pyvisa.VisaIOError:
 		pass
-	
+
 	assert (inst.read_stb() == 0)
 
 
@@ -153,7 +153,7 @@ print(reslist)
 
 if (len(reslist) == 0):
     sys.exit()
-	
+
 inst = rm.open_resource(reslist[0]);
 inst.timeout = 3000
 
diff --git a/examples/device/video_capture/CMakeLists.txt b/examples/device/video_capture/CMakeLists.txt
index b92a2b804..f1ef247e1 100644
--- a/examples/device/video_capture/CMakeLists.txt
+++ b/examples/device/video_capture/CMakeLists.txt
@@ -31,4 +31,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/video_capture/src/main.c b/examples/device/video_capture/src/main.c
index 3ceebe821..5654e0b61 100644
--- a/examples/device/video_capture/src/main.c
+++ b/examples/device/video_capture/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -66,8 +66,6 @@ int main(void)
 
     video_task();
   }
-
-  return 0;
 }
 
 //--------------------------------------------------------------------+
diff --git a/examples/device/video_capture/src/usb_descriptors.c b/examples/device/video_capture/src/usb_descriptors.c
index 0cf772010..af18d15d1 100644
--- a/examples/device/video_capture/src/usb_descriptors.c
+++ b/examples/device/video_capture/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/video_capture/src/usb_descriptors.h b/examples/device/video_capture/src/usb_descriptors.h
index f1ed3c8e9..93f148a82 100644
--- a/examples/device/video_capture/src/usb_descriptors.h
+++ b/examples/device/video_capture/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2020 Jerzy Kasenbreg
diff --git a/examples/device/webusb_serial/CMakeLists.txt b/examples/device/webusb_serial/CMakeLists.txt
index abc4d91da..acaa54198 100644
--- a/examples/device/webusb_serial/CMakeLists.txt
+++ b/examples/device/webusb_serial/CMakeLists.txt
@@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC
 
 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
\ No newline at end of file
+family_configure_device_example(${PROJECT})
diff --git a/examples/device/webusb_serial/src/main.c b/examples/device/webusb_serial/src/main.c
index 604d30a83..eaca78c73 100644
--- a/examples/device/webusb_serial/src/main.c
+++ b/examples/device/webusb_serial/src/main.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
@@ -103,8 +103,6 @@ int main(void)
     webserial_task();
     led_blinking_task();
   }
-
-  return 0;
 }
 
 // send characters to both CDC and WebUSB
@@ -114,7 +112,7 @@ void echo_all(uint8_t buf[], uint32_t count)
   if ( web_serial_connected )
   {
     tud_vendor_write(buf, count);
-    tud_vendor_flush();
+    tud_vendor_write_flush();
   }
 
   // echo to cdc
@@ -213,7 +211,7 @@ bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_requ
           blink_interval_ms = BLINK_ALWAYS_ON;
 
           tud_vendor_write_str("\r\nWebUSB interface connected\r\n");
-          tud_vendor_flush();
+          tud_vendor_write_flush();
         }else
         {
           blink_interval_ms = BLINK_MOUNTED;
diff --git a/examples/device/webusb_serial/src/usb_descriptors.c b/examples/device/webusb_serial/src/usb_descriptors.c
index 99f5caaf9..b2593001c 100644
--- a/examples/device/webusb_serial/src/usb_descriptors.c
+++ b/examples/device/webusb_serial/src/usb_descriptors.c
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)
diff --git a/examples/device/webusb_serial/src/usb_descriptors.h b/examples/device/webusb_serial/src/usb_descriptors.h
index 19f1ff3f3..a1c4a2cf1 100644
--- a/examples/device/webusb_serial/src/usb_descriptors.h
+++ b/examples/device/webusb_serial/src/usb_descriptors.h
@@ -1,4 +1,4 @@
-/* 
+/*
  * The MIT License (MIT)
  *
  * Copyright (c) 2019 Ha Thach (tinyusb.org)