merge with current master

.gitattributes

@@ -0,0 +1,25 @@
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+*.c text 
+*.cpp text 
+*.h text
+*.icf text 
+*.js text
+*.json text
+*.ld text
+*.md text
+*.mk text
+*.py text
+*.rst text
+*.s text
+*.txt text
+*.xml text
+*.yml text
+
+Makefile text
+
+# Windows-only Visual Studio things
+
+*.sln        text eol=crlf
+*.csproj     text eol=crlf

.github/workflows/build.yml

@@ -24,8 +24,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        example: ['board_test', 'cdc_dual_ports', 'cdc_msc', 'dfu_rt', 'hid_composite', 
+        example: ['board_test', 'cdc_dual_ports', 'cdc_msc', 'cdc_msc_freertos', 'dfu_rt', 
-                  'hid_generic_inout', 'midi_test', 'msc_dual_lun', 'usbtmc', 'webusb_serial']
+                  'hid_composite', 'hid_generic_inout', 'midi_test', 'msc_dual_lun', 'net_lwip_webserver', 
+                  'usbtmc', 'webusb_serial']
     steps:
     - name: Setup Python
       uses: actions/setup-python@v1

.gitmodules

@@ -21,4 +21,10 @@
 	url = https://github.com/hathach/microchip_driver.git
 [submodule "hw/mcu/nuvoton"]
 	path = hw/mcu/nuvoton
-	url = https://github.com/majbthrd/nuc_driver.git
+	url = https://github.com/majbthrd/nuc_driver.git
+[submodule "lib/lwip"]
+	path = lib/lwip
+	url = https://git.savannah.nongnu.org/git/lwip.git
+[submodule "lib/FreeRTOS"]
+	path = lib/FreeRTOS
+	url = https://github.com/FreeRTOS/FreeRTOS.git

CONTRIBUTORS.md

@@ -25,9 +25,11 @@
   * Board support for STM32F070RB Nucleo, STM32F303 Discovery
 
 * **[Peter Lawrence](https://github.com/majbthrd)**
-  * Nuvoton NUC 121, 125, 126 device driver port
+  * Nuvoton NUC 120, 121, 125, 126, 505 device driver port
-  * Board support for NuTiny NUC121s, NUC125s, NUC126V
+  * USBNET RNDIS, CDC-ECM, CDC-EEM class driver
-  * Complete multiple class interfaces & add cdc_dual_ports example 
+  * Added `net_lwip_webserver` example for demonstration of usbnet with lwip
+  * Board support for NuTiny NUC120, NUC121s, NUC125s, NUC126V, NUC505
+  * Complete multiple class interfaces & add cdc_dual_ports example
   
 * **[Scott Shawcroft](https://github.com/tannewt)**
   * SAMD21 and SAMD51 device driver port

README.md

@@ -38,7 +38,7 @@ The stack supports the following MCUs:
 - **Sony:** CXD56
 - **ST:** STM32 series: L0, F0, F1, F2, F3, F4, F7, H7 (device only)
 - **[ValentyUSB](https://github.com/im-tomu/valentyusb)** eptri
-- **Nuvoton:** NUC121/NUC125, NUC126
+- **Nuvoton:** NUC120, NUC121/NUC125, NUC126, NUC505
 
 [Here is the list of supported Boards](docs/boards.md) that can be used with provided examples.
 
@@ -50,6 +50,7 @@ Supports multiple device configurations by dynamically changing usb descriptors.
 - Human Interface Device (HID): Generic (In & Out), Keyboard, Mouse, Gamepad etc ...
 - Mass Storage Class (MSC): with multiple LUNs
 - Musical Instrument Digital Interface (MIDI)
+- Network with RNDIS, CDC-ECM, CDC-EEM (work in progress)
 - Vendor-specific class support with generic In & Out endpoints. Can be used with MS OS 2.0 compatible descriptor to load winUSB driver without INF file.
 - [WebUSB](https://github.com/WICG/webusb) with vendor-specific class
 

docs/boards.md

@@ -13,14 +13,18 @@ This code base already had supported for a handful of following boards (sorted a
 
 - [Adafruit Circuit Playground Express](https://www.adafruit.com/product/3333)
 - [Adafruit Feather M0 Express](https://www.adafruit.com/product/3403)
-- [Adafruit Metro M0 Express](https://www.adafruit.com/product/3505)
 - [Adafruit Feather M4 Express](https://www.adafruit.com/product/3857)
+- [Adafruit ItsyBitsy M0 Express](https://www.adafruit.com/product/3727)
+- [Adafruit ItsyBitsy M4 Express](https://www.adafruit.com/product/3800)
+- [Adafruit Metro M0 Express](https://www.adafruit.com/product/3505)
 - [Adafruit Metro M4 Express](https://www.adafruit.com/product/3382)
 
 ### Nordic nRF5x
 
-- [Adafruit Feather nRF52840 Express](https://www.adafruit.com/product/4062)
 - [Adafruit Circuit Playground Bluefruit](https://www.adafruit.com/product/4333)
+- [Adafruit CLUE](https://www.adafruit.com/product/4500)
+- [Adafruit Feather nRF52840 Express](https://www.adafruit.com/product/4062)
+- [Adafruit Feather nRF52840 Sense](https://www.adafruit.com/product/4516)
 - [Maker Diary nRF52840 MDK Dongle](https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle)
 - [Nordic nRF52840 Development Kit (aka pca10056)](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK)
 - [Nordic nRF52840 Dongle (aka pca10059)](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-Dongle)
@@ -29,9 +33,11 @@ This code base already had supported for a handful of following boards (sorted a
 
 ### Nuvoton
 
+- NuTiny SDK NUC120
 - [NuTiny NUC121S](https://direct.nuvoton.com/en/nutiny-nuc121s)
 - [NuTiny NUC125S](https://direct.nuvoton.com/en/nutiny-nuc125s)
 - [NuTiny NUC126V](https://direct.nuvoton.com/en/nutiny-nuc126v)
+- [NuTiny SDK NUC505Y](https://direct.nuvoton.com/en/nutiny-nuc505y)
 
 ### NXP iMX RT
 

examples/device/cdc_dual_ports/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/cdc_dual_ports/src/usb_descriptors.c

@@ -130,8 +130,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/cdc_msc/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
@@ -68,6 +68,7 @@
 //--------------------------------------------------------------------
 // DEVICE CONFIGURATION
 //--------------------------------------------------------------------
+
 #ifndef CFG_TUD_ENDPOINT0_SIZE
 #define CFG_TUD_ENDPOINT0_SIZE    64
 #endif

examples/device/cdc_msc/src/usb_descriptors.c

@@ -95,7 +95,7 @@ enum
   #define EPNUM_MSC_IN      0x85
 
 #elif CFG_TUSB_MCU == OPT_MCU_SAMG
-  // SAMG doesn't support a same endpoint number with IN and OUT
+  // SAMG doesn't support a same endpoint number with different direction IN and OUT
   //    e.g EP1 OUT & EP1 IN cannot exist together
   #define EPNUM_CDC_NOTIF   0x81
   #define EPNUM_CDC_OUT     0x02
@@ -155,8 +155,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/cdc_msc_freertos/Makefile

@@ -0,0 +1,27 @@
+include ../../../tools/top.mk
+include ../../make.mk
+
+FREERTOS_SRC = lib/FreeRTOS/FreeRTOS/Source
+
+INC += \
+	src \
+	$(TOP)/hw \
+	$(TOP)/$(FREERTOS_SRC)/include \
+	$(TOP)/$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)
+	
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
+
+# FreeRTOS source, all files in port folder
+SRC_C += \
+	$(FREERTOS_SRC)/list.c \
+	$(FREERTOS_SRC)/queue.c \
+	$(FREERTOS_SRC)/tasks.c \
+	$(FREERTOS_SRC)/timers.c \
+	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)/*.c))
+
+# FreeRTOS (lto + Os) linker issue
+LDFLAGS += -Wl,--undefined=vTaskSwitchContext
+
+include ../../rules.mk

examples/device/cdc_msc_freertos/src/FreeRTOSConfig.h

@@ -41,8 +41,84 @@
  *
  * See http://www.freertos.org/a00110.html.
  *----------------------------------------------------------*/
-#include "nrf.h"
 
+// for OPT_MCU_
+#include "tusb_option.h"
+
+#if   CFG_TUSB_MCU == OPT_MCU_LPC11UXX   || CFG_TUSB_MCU == OPT_MCU_LPC13XX    || \
+      CFG_TUSB_MCU == OPT_MCU_LPC15XX    || CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || \
+      CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC18XX    || \
+      CFG_TUSB_MCU == OPT_MCU_LPC40XX    || CFG_TUSB_MCU == OPT_MCU_LPC43XX
+  #include "chip.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_LPC51UXX || CFG_TUSB_MCU == OPT_MCU_LPC54XXX || \
+      CFG_TUSB_MCU == OPT_MCU_LPC55XX
+  #include "fsl_device_registers.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_NRF5X
+  #include "nrf.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_SAMD21 || CFG_TUSB_MCU == OPT_MCU_SAMD51
+  #include "sam.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_SAMG
+  #undef LITTLE_ENDIAN // hack to suppress "LITTLE_ENDIAN" redefined
+  #include "sam.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32F0
+  #include "stm32f0xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32F1
+  #include "stm32f1xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32F2
+  #include "stm32f2xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32F3
+  #include "stm32f3xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32F4
+  #include "stm32f4xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32F7
+  #include "stm32f7xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32H7
+  #include "stm32h7xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32L0
+  #include "stm32l0xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32L1
+  #include "stm32l1xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_STM32L4
+  #include "stm32l4xx.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+  #include "fsl_device_registers.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_NUC120
+  #include "NUC100Series.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_NUC121 || CFG_TUSB_MCU == OPT_MCU_NUC126
+  #include "NuMicro.h"
+
+#elif CFG_TUSB_MCU == OPT_MCU_NUC505
+  #include "NUC505Series.h"
+
+#else
+  #error "FreeRTOSConfig.h need to include low level mcu header for configuration"
+#endif
+
+extern uint32_t SystemCoreClock;
+
+
+/* Cortex M23/M33 port configuration. */
+#define configENABLE_MPU								        0
+#define configENABLE_FPU								        1
+#define configENABLE_TRUSTZONE					        0
+#define configMINIMAL_SECURE_STACK_SIZE					( 1024 )
 
 #define configUSE_PREEMPTION                    1
 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 0
@@ -50,7 +126,7 @@
 #define configTICK_RATE_HZ                      ( 1000 )
 #define configMAX_PRIORITIES                    ( 5 )
 #define configMINIMAL_STACK_SIZE                ( 128 )
-#define configTOTAL_HEAP_SIZE                   ( 16*1024 )
+#define configTOTAL_HEAP_SIZE                   ( 0*1024 ) // dynamic is not used
 #define configMAX_TASK_NAME_LEN                 16
 #define configUSE_16_BIT_TICKS                  0
 #define configIDLE_SHOULD_YIELD                 1
@@ -64,7 +140,7 @@
 #define configENABLE_BACKWARD_COMPATIBILITY     1
 
 #define configSUPPORT_STATIC_ALLOCATION         1
-#define configSUPPORT_DYNAMIC_ALLOCATION        1
+#define configSUPPORT_DYNAMIC_ALLOCATION        0
 
 /* Hook function related definitions. */
 #define configUSE_IDLE_HOOK                    0
@@ -108,18 +184,18 @@
 /* Define to trap errors during development. */
 // Halt CPU (breakpoint) when hitting error, only apply for Cortex M3, M4, M7
 #if defined(__ARM_ARCH_7M__) || defined (__ARM_ARCH_7EM__)
-#define configASSERT(_exp) \
+  #define configASSERT(_exp) \
-  do {\
+    do {\
-    if ( !(_exp) ) { \
+      if ( !(_exp) ) { \
-      volatile uint32_t* ARM_CM_DHCSR =  ((volatile uint32_t*) 0xE000EDF0UL); /* Cortex M CoreDebug->DHCSR */ \
+        volatile uint32_t* ARM_CM_DHCSR =  ((volatile uint32_t*) 0xE000EDF0UL); /* Cortex M CoreDebug->DHCSR */ \
-      if ( (*ARM_CM_DHCSR) & 1UL ) {  /* Only halt mcu if debugger is attached */ \
+        if ( (*ARM_CM_DHCSR) & 1UL ) {  /* Only halt mcu if debugger is attached */ \
-        taskDISABLE_INTERRUPTS(); \
+          taskDISABLE_INTERRUPTS(); \
-         __asm("BKPT #0\n"); \
+           __asm("BKPT #0\n"); \
+        }\
       }\
-    }\
+    } while(0)
-  } while(0)
 #else
-#define configASSERT( x )
+  #define configASSERT( x )
 #endif
 
 /* FreeRTOS hooks to NVIC vectors */
@@ -144,15 +220,6 @@
 routine that makes calls to interrupt safe FreeRTOS API functions.  DO NOT CALL
 INTERRUPT SAFE FREERTOS API FUNCTIONS FROM ANY INTERRUPT THAT HAS A HIGHER
 PRIORITY THAN THIS! (higher priorities are lower numeric values. */
-
-/* SD priority
- * 0: SD timing critical
- * 1: SD memory protection
- * 2: App Highest
- * 3: App High
- * 4: SD non-time-critical
- * 5+ Remaining Application
- */
 #define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY	2
 
 /* Interrupt priorities used by the kernel port layer itself.  These are generic

examples/device/cdc_msc_freertos/src/main.c

@@ -36,8 +36,6 @@
 #include "bsp/board.h"
 #include "tusb.h"
 
-#include "usb_descriptors.h"
-
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@@ -53,12 +51,24 @@ enum  {
   BLINK_SUSPENDED = 2500,
 };
 
+// static timer
+StaticTimer_t static_blink;
 TimerHandle_t blink_tm;
 
+// static task for usbd
+#define USBD_STACK_SIZE     150
+StackType_t  stack_usbd[USBD_STACK_SIZE];
+StaticTask_t static_task_usbd;
+
+// static task for cdc
+#define CDC_STACK_SZIE      128
+StackType_t  stack_cdc[CDC_STACK_SZIE];
+StaticTask_t static_task_cdc;
+
+
 void led_blinky_cb(TimerHandle_t xTimer);
 void usb_device_task(void* param);
 void cdc_task(void* params);
-void hid_task(void* params);
 
 /*------------- MAIN -------------*/
 int main(void)
@@ -66,21 +76,17 @@ int main(void)
   board_init();
 
   // soft timer for blinky
-  blink_tm = xTimerCreate(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb);
+  blink_tm = xTimerCreateStatic(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb, &static_blink);
   xTimerStart(blink_tm, 0);
 
   tusb_init();
 
   // Create a task for tinyusb device stack
-  xTaskCreate( usb_device_task, "usbd", 150, NULL, configMAX_PRIORITIES-1, NULL);
+  (void) xTaskCreateStatic( usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, stack_usbd, &static_task_usbd);
 
   // Create task
 #if CFG_TUD_CDC
-  xTaskCreate( cdc_task, "cdc", 128, NULL, configMAX_PRIORITIES-2, NULL);
+  (void) xTaskCreateStatic( cdc_task, "cdc", CDC_STACK_SZIE, NULL, configMAX_PRIORITIES-2, stack_cdc, &static_task_cdc);
-#endif
-
-#if CFG_TUD_HID
-  xTaskCreate( hid_task, "hid", 128, NULL, configMAX_PRIORITIES-2, NULL);
 #endif
 
   vTaskStartScheduler();
@@ -134,6 +140,7 @@ void tud_resume_cb(void)
   xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0);
 }
 
+
 //--------------------------------------------------------------------+
 // USB CDC
 //--------------------------------------------------------------------+
@@ -189,97 +196,7 @@ void tud_cdc_rx_cb(uint8_t itf)
   (void) itf;
 }
 
-#endif
+#endif // CFG_TUD_CDC
-
-//--------------------------------------------------------------------+
-// USB HID
-//--------------------------------------------------------------------+
-#if CFG_TUD_HID
-
-void hid_task(void* params)
-{
-  (void) params;
-
-  while (1)
-  {
-    // Poll every 10ms
-    vTaskDelay(pdMS_TO_TICKS(10));
-
-    uint32_t const btn = board_button_read();
-
-    // Remote wakeup
-    if ( tud_suspended() && btn )
-    {
-      // Wake up host if we are in suspend mode
-      // and REMOTE_WAKEUP feature is enabled by host
-      tud_remote_wakeup();
-    }
-
-    /*------------- Mouse -------------*/
-    if ( tud_hid_ready() )
-    {
-      if ( btn )
-      {
-        int8_t const delta = 5;
-
-        // no button, right + down, no scroll pan
-        tud_hid_mouse_report(REPORT_ID_MOUSE, 0x00, delta, delta, 0, 0);
-
-        // delay a bit before attempt to send keyboard report
-        vTaskDelay(pdMS_TO_TICKS(2));
-      }
-    }
-
-    /*------------- Keyboard -------------*/
-    if ( tud_hid_ready() )
-    {
-      // use to avoid send multiple consecutive zero report for keyboard
-      static bool has_key = false;
-
-      if ( btn )
-      {
-        uint8_t keycode[6] = { 0 };
-        keycode[0] = HID_KEY_A;
-
-        tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode);
-
-        has_key = true;
-      }else
-      {
-        // send empty key report if previously has key pressed
-        if (has_key) tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, NULL);
-        has_key = false;
-      }
-    }
-  }
-}
-
-// Invoked when received GET_REPORT control request
-// Application must fill buffer report's content and return its length.
-// Return zero will cause the stack to STALL request
-uint16_t tud_hid_get_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen)
-{
-  // TODO not Implemented
-  (void) report_id;
-  (void) report_type;
-  (void) buffer;
-  (void) reqlen;
-
-  return 0;
-}
-
-// Invoked when received SET_REPORT control request or
-// received data on OUT endpoint ( Report ID = 0, Type = 0 )
-void tud_hid_set_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize)
-{
-  // TODO not Implemented
-  (void) report_id;
-  (void) report_type;
-  (void) buffer;
-  (void) bufsize;
-}
-
-#endif
 
 //--------------------------------------------------------------------+
 // BLINKING TASK

examples/device/cdc_msc_freertos/src/msc_disk.c

@@ -220,18 +220,6 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
       resplen = 0;
     break;
 
-    case SCSI_CMD_START_STOP_UNIT:
-      // Host try to eject/safe remove/poweroff us. We could safely disconnect with disk storage, or go into lower power
-      /* scsi_start_stop_unit_t const * start_stop = (scsi_start_stop_unit_t const *) scsi_cmd;
-        // Start bit = 0 : low power mode, if load_eject = 1 : unmount disk storage as well
-        // Start bit = 1 : Ready mode, if load_eject = 1 : mount disk storage
-        start_stop->start;
-        start_stop->load_eject;
-       */
-       resplen = 0;
-    break;
-
-
     default:
       // Set Sense = Invalid Command Operation
       tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);

examples/device/cdc_msc_freertos/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
@@ -76,7 +76,7 @@
 //------------- CLASS -------------//
 #define CFG_TUD_CDC              1
 #define CFG_TUD_MSC              1
-#define CFG_TUD_HID              1
+#define CFG_TUD_HID              0
 
 #define CFG_TUD_MIDI             0
 #define CFG_TUD_VENDOR           0

examples/device/cdc_msc_freertos/src/usb_descriptors.c

@@ -24,7 +24,6 @@
  */
 
 #include "tusb.h"
-#include "usb_descriptors.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.
@@ -45,17 +44,11 @@ tusb_desc_device_t const desc_device =
     .bDescriptorType    = TUSB_DESC_DEVICE,
     .bcdUSB             = 0x0200,
 
-  #if CFG_TUD_CDC
     // 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,
-  #else
-    .bDeviceClass       = 0x00,
-    .bDeviceSubClass    = 0x00,
-    .bDeviceProtocol    = 0x00,
-  #endif
 
     .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
 
@@ -77,84 +70,63 @@ uint8_t const * tud_descriptor_device_cb(void)
   return (uint8_t const *) &desc_device;
 }
 
-//--------------------------------------------------------------------+
-// HID Report Descriptor
-//--------------------------------------------------------------------+
-#if CFG_TUD_HID
-
-uint8_t const desc_hid_report[] =
-{
-  TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD), ),
-  TUD_HID_REPORT_DESC_MOUSE   ( HID_REPORT_ID(REPORT_ID_MOUSE), )
-};
-
-// Invoked when received GET HID REPORT DESCRIPTOR
-// Application return pointer to descriptor
-// Descriptor contents must exist long enough for transfer to complete
-uint8_t const * tud_hid_descriptor_report_cb(void)
-{
-  return desc_hid_report;
-}
-
-#endif
-
 //--------------------------------------------------------------------+
 // Configuration Descriptor
 //--------------------------------------------------------------------+
 
 enum
 {
-#if CFG_TUD_CDC
   ITF_NUM_CDC = 0,
   ITF_NUM_CDC_DATA,
-#endif
-
-#if CFG_TUD_MSC
   ITF_NUM_MSC,
-#endif
-
-#if CFG_TUD_HID
-  ITF_NUM_HID,
-#endif
-
   ITF_NUM_TOTAL
 };
 
-#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + CFG_TUD_CDC*TUD_CDC_DESC_LEN + CFG_TUD_MSC*TUD_MSC_DESC_LEN + CFG_TUD_HID*TUD_HID_DESC_LEN)
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_MSC_DESC_LEN)
 
 #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 etc ...
+  // 0 control, 1 In, 2 Bulk, 3 Iso, 4 In, 5 Bulk etc ...
-  // Note: since CDC EP ( 1 & 2), HID (4) are spot-on, thus we only need to force
+  #define EPNUM_CDC_NOTIF   0x81
-  // endpoint number for MSC to 5
+  #define EPNUM_CDC_OUT     0x02
-  #define EPNUM_MSC   0x05
+  #define EPNUM_CDC_IN      0x82
+
+  #define EPNUM_MSC_OUT     0x05
+  #define EPNUM_MSC_IN      0x85
+
+#elif CFG_TUSB_MCU == OPT_MCU_SAMG
+  // SAMG doesn't support a same endpoint number with different direction IN and OUT
+  //    e.g EP1 OUT & EP1 IN cannot exist together
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x83
+
+  #define EPNUM_MSC_OUT     0x04
+  #define EPNUM_MSC_IN      0x85
+
 #else
-  #define EPNUM_MSC   0x03
+  #define EPNUM_CDC_NOTIF   0x81
+  #define EPNUM_CDC_OUT     0x02
+  #define EPNUM_CDC_IN      0x82
+
+  #define EPNUM_MSC_OUT     0x03
+  #define EPNUM_MSC_IN      0x83
+
 #endif
 
 uint8_t const desc_configuration[] =
 {
-  // interface count, string index, total length, attribute, power in mA
+  // Interface count, string index, total length, attribute, power in mA
   TUD_CONFIG_DESCRIPTOR(ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
 
-#if CFG_TUD_CDC
   // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
-  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, 0x81, 8, 0x02, 0x82, 64),
+  TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
-#endif
 
-#if CFG_TUD_MSC
   // Interface number, string index, EP Out & EP In address, EP size
-  TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 5, EPNUM_MSC, 0x80 | EPNUM_MSC, 64), // highspeed 512
+  TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 5, EPNUM_MSC_OUT, EPNUM_MSC_IN, (CFG_TUSB_RHPORT0_MODE & OPT_MODE_HIGH_SPEED) ? 512 : 64),
-#endif
-
-#if CFG_TUD_HID
-  // Interface number, string index, protocol, report descriptor len, EP In address, size & polling interval
-  TUD_HID_DESCRIPTOR(ITF_NUM_HID, 6, HID_PROTOCOL_NONE, sizeof(desc_hid_report), 0x84, 16, 10)
-#endif
 };
 
 
-
 // Invoked when received GET CONFIGURATION DESCRIPTOR
 // Application return pointer to descriptor
 // Descriptor contents must exist long enough for transfer to complete
@@ -177,15 +149,16 @@ char const* string_desc_arr [] =
   "123456",                      // 3: Serials, should use chip ID
   "TinyUSB CDC",                 // 4: CDC Interface
   "TinyUSB MSC",                 // 5: MSC Interface
-  "TinyUSB HID"                  // 6: HID
 };
 
 static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/cdc_msc_hid_freertos/Makefile

@@ -1,26 +0,0 @@
-include ../../../tools/top.mk
-include ../../make.mk
-
-INC += \
-	src \
-	$(TOP)/hw \
-	$(TOP)/lib/FreeRTOS/Source/include \
-	$(TOP)/lib/FreeRTOS/Source/portable/GCC/$(FREERTOS_PORT)
-	
-# Example source
-EXAMPLE_SOURCE += $(wildcard src/*.c)
-SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
-
-# FreeRTOS source
-SRC_C += \
-	lib/FreeRTOS/Source/list.c \
-	lib/FreeRTOS/Source/queue.c \
-	lib/FreeRTOS/Source/tasks.c \
-	lib/FreeRTOS/Source/timers.c \
-	lib/FreeRTOS/Source/portable/MemMang/heap_4.c \
-	lib/FreeRTOS/Source/portable/GCC/$(FREERTOS_PORT)/port.c \
-
-# FreeRTOS (lto + Os) linker issue
-LDFLAGS += -Wl,--undefined=vTaskSwitchContext
-
-include ../../rules.mk

examples/device/dfu_rt/src/tusb_config.h

@@ -21,7 +21,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/dfu_rt/src/usb_descriptors.c

@@ -193,8 +193,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   size_t chr_count;
 
   if ( index == 0)

examples/device/hid_composite/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/hid_composite/src/usb_descriptors.c

@@ -134,8 +134,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/hid_generic_inout/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/hid_generic_inout/src/usb_descriptors.c

@@ -132,8 +132,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/midi_test/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/midi_test/src/usb_descriptors.c

@@ -123,8 +123,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/msc_dual_lun/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/msc_dual_lun/src/usb_descriptors.c

@@ -80,10 +80,20 @@ enum
 
 #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 etc ...
+  //  0 control, 1 In, 2 Bulk, 3 Iso, 4 In, 5 Bulk etc ...
-  #define EPNUM_MSC   0x02
+  #define EPNUM_MSC_OUT   0x02
+  #define EPNUM_MSC_IN    0x82
+
+#elif CFG_TUSB_MCU == OPT_MCU_SAMG
+  // SAMG doesn't support a same endpoint number with different direction IN and OUT
+  //  e.g EP1 OUT & EP1 IN cannot exist together
+  #define EPNUM_MSC_OUT   0x01
+  #define EPNUM_MSC_IN    0x82
+
 #else
-  #define EPNUM_MSC   0x01
+  #define EPNUM_MSC_OUT   0x01
+  #define EPNUM_MSC_IN    0x81
+
 #endif
 
 uint8_t const desc_configuration[] =
@@ -92,7 +102,7 @@ uint8_t const desc_configuration[] =
   TUD_CONFIG_DESCRIPTOR(ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
 
   // Interface number, string index, EP Out & EP In address, EP size
-  TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 0, EPNUM_MSC, 0x80 | EPNUM_MSC, (CFG_TUSB_RHPORT0_MODE & OPT_MODE_HIGH_SPEED) ? 512 : 64),
+  TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 0, EPNUM_MSC_OUT, EPNUM_MSC_IN, (CFG_TUSB_RHPORT0_MODE & OPT_MODE_HIGH_SPEED) ? 512 : 64),
 };
 
 // Invoked when received GET CONFIGURATION DESCRIPTOR
@@ -121,8 +131,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/device/net_lwip_webserver/Makefile

@@ -0,0 +1,57 @@
+include ../../../tools/top.mk
+include ../../make.mk
+
+CFLAGS += \
+  -DPBUF_POOL_SIZE=2 \
+  -DTCP_WND=2*TCP_MSS \
+  -DHTTPD_USE_CUSTOM_FSDATA=0
+
+INC += \
+  src \
+  $(TOP)/hw \
+  $(TOP)/lib/lwip/src/include \
+  $(TOP)/lib/lwip/src/include/ipv4 \
+  $(TOP)/lib/lwip/src/include/lwip/apps \
+  $(TOP)/lib/networking
+
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
+SRC_C += \
+  lib/lwip/src/core/altcp.c \
+  lib/lwip/src/core/altcp_alloc.c \
+  lib/lwip/src/core/altcp_tcp.c \
+  lib/lwip/src/core/def.c \
+  lib/lwip/src/core/dns.c \
+  lib/lwip/src/core/inet_chksum.c \
+  lib/lwip/src/core/init.c \
+  lib/lwip/src/core/ip.c \
+  lib/lwip/src/core/mem.c \
+  lib/lwip/src/core/memp.c \
+  lib/lwip/src/core/netif.c \
+  lib/lwip/src/core/pbuf.c \
+  lib/lwip/src/core/raw.c \
+  lib/lwip/src/core/stats.c \
+  lib/lwip/src/core/sys.c \
+  lib/lwip/src/core/tcp.c \
+  lib/lwip/src/core/tcp_in.c \
+  lib/lwip/src/core/tcp_out.c \
+  lib/lwip/src/core/timeouts.c \
+  lib/lwip/src/core/udp.c \
+  lib/lwip/src/core/ipv4/autoip.c \
+  lib/lwip/src/core/ipv4/dhcp.c \
+  lib/lwip/src/core/ipv4/etharp.c \
+  lib/lwip/src/core/ipv4/icmp.c \
+  lib/lwip/src/core/ipv4/igmp.c \
+  lib/lwip/src/core/ipv4/ip4.c \
+  lib/lwip/src/core/ipv4/ip4_addr.c \
+  lib/lwip/src/core/ipv4/ip4_frag.c \
+  lib/lwip/src/netif/ethernet.c \
+  lib/lwip/src/netif/slipif.c \
+  lib/lwip/src/apps/http/httpd.c \
+  lib/lwip/src/apps/http/fs.c \
+  lib/networking/dhserver.c \
+  lib/networking/dnserver.c \
+  lib/networking/rndis_reports.c
+
+include ../../rules.mk

examples/device/net_lwip_webserver/src/arch/cc.h

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * 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,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    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. 
+ *
+ * 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 <adam@sics.se>
+ *
+ */
+#ifndef __CC_H__
+#define __CC_H__
+
+//#include "cpu.h"
+
+typedef int sys_prot_t;
+
+
+
+/* define compiler specific symbols */
+#if defined (__ICCARM__)
+
+#define PACK_STRUCT_BEGIN
+#define PACK_STRUCT_STRUCT 
+#define PACK_STRUCT_END
+#define PACK_STRUCT_FIELD(x) x
+#define PACK_STRUCT_USE_INCLUDES
+
+#elif defined (__CC_ARM)
+
+#define PACK_STRUCT_BEGIN __packed
+#define PACK_STRUCT_STRUCT 
+#define PACK_STRUCT_END
+#define PACK_STRUCT_FIELD(x) x
+
+#elif defined (__GNUC__)
+
+#define PACK_STRUCT_BEGIN
+#define PACK_STRUCT_STRUCT __attribute__ ((__packed__))
+#define PACK_STRUCT_END
+#define PACK_STRUCT_FIELD(x) x
+
+#elif defined (__TASKING__)
+
+#define PACK_STRUCT_BEGIN
+#define PACK_STRUCT_STRUCT
+#define PACK_STRUCT_END
+#define PACK_STRUCT_FIELD(x) x
+
+#endif
+
+#define LWIP_PLATFORM_ASSERT(x) do { if(!(x)) while(1); } while(0)
+
+#endif /* __CC_H__ */

examples/device/net_lwip_webserver/src/lwipopts.h

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * 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,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    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. 
+ *
+ * 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
+ *
+ */
+#ifndef __LWIPOPTS_H__
+#define __LWIPOPTS_H__
+
+/* Prevent having to link sys_arch.c (we don't test the API layers in unit tests) */
+#define NO_SYS                          1
+#define MEM_ALIGNMENT                   4
+#define LWIP_RAW                        1
+#define LWIP_NETCONN                    0
+#define LWIP_SOCKET                     0
+#define LWIP_DHCP                       0
+#define LWIP_ICMP                       1
+#define LWIP_UDP                        1
+#define LWIP_TCP                        1
+#define ETH_PAD_SIZE                    0
+#define LWIP_IP_ACCEPT_UDP_PORT(p)      ((p) == PP_NTOHS(67))
+
+#define TCP_MSS                         (1500 /*mtu*/ - 20 /*iphdr*/ - 20 /*tcphhr*/)
+#define TCP_SND_BUF                     (2 * TCP_MSS)
+
+#define ETHARP_SUPPORT_STATIC_ENTRIES   1
+
+#define LWIP_HTTPD_CGI                  0
+#define LWIP_HTTPD_SSI                  0
+#define LWIP_HTTPD_SSI_INCLUDE_TAG      0
+
+#endif /* __LWIPOPTS_H__ */

examples/device/net_lwip_webserver/src/main.c

@@ -0,0 +1,214 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Peter Lawrence
+ *
+ * influenced by lrndis https://github.com/fetisov/lrndis
+ *
+ * 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.
+ *
+ */
+
+/*
+depending on the value of CFG_TUD_NET (tusb_config.h), this can be a CDC-ECM, RNDIS, or CDC-EEM USB virtual network adapter
+
+CDC-ECM should be valid on Linux and MacOS hosts
+RNDIS   should be valid on Linux and Windows hosts
+CDC-EEM should be valid on Linux hosts
+
+You *must* customize tusb_config.h to set the CFG_TUD_NET definition to the type of these network adapters to emulate.
+
+The MCU appears to the host as IP address 192.168.7.1, and provides a DHCP server, DNS server, and web server.
+*/
+
+#include "bsp/board.h"
+#include "tusb.h"
+
+#include "dhserver.h"
+#include "dnserver.h"
+#include "lwip/init.h"
+#include "httpd.h"
+
+/* lwip context */
+static struct netif netif_data;
+
+/* shared between tud_network_recv_cb() and service_traffic() */
+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) */
+const uint8_t tud_network_mac_address[6] = {0x20,0x89,0x84,0x6A,0x96,0x00};
+
+/* network parameters of this MCU */
+static const ip_addr_t ipaddr  = IPADDR4_INIT_BYTES(192, 168, 7, 1);
+static const ip_addr_t netmask = IPADDR4_INIT_BYTES(255, 255, 255, 0);
+static const ip_addr_t gateway = IPADDR4_INIT_BYTES(0, 0, 0, 0);
+
+/* database IP addresses that can be offered to the host; this must be in RAM to store assigned MAC addresses */
+static dhcp_entry_t entries[] =
+{
+  /* mac    ip address        subnet mask        lease time */
+  { {0}, {192, 168, 7, 2}, {255, 255, 255, 0}, 24 * 60 * 60 },
+  { {0}, {192, 168, 7, 3}, {255, 255, 255, 0}, 24 * 60 * 60 },
+  { {0}, {192, 168, 7, 4}, {255, 255, 255, 0}, 24 * 60 * 60 }
+};
+
+/* DHCP configuration parameters, leveraging "entries" above */
+static const dhcp_config_t dhcp_config =
+{
+  {192, 168, 7, 1}, 67,    /* server address (self), port */
+  {192, 168, 7, 1},        /* dns server (self) */
+  "usb",                   /* dns suffix */
+  TU_ARRAY_SIZE(entries),  /* number of entries */
+  entries                  /* pointer to entries */
+};
+
+static err_t linkoutput_fn(struct netif *netif, struct pbuf *p)
+{
+  (void)netif;
+
+  for (;;)
+  {
+    /* if TinyUSB isn't ready, we must signal back to lwip that there is nothing we can do */
+    if (!tud_ready())
+      return ERR_USE;
+
+    /* if the network driver can accept another packet, we make it happen */
+    if (tud_network_can_xmit())
+    {
+      tud_network_xmit(p);
+      return ERR_OK;
+    }
+
+    /* transfer execution to TinyUSB in the hopes that it will finish transmitting the prior packet */
+    tud_task();
+  }
+}
+
+static err_t output_fn(struct netif *netif, struct pbuf *p, const ip_addr_t *addr)
+{
+  return etharp_output(netif, p, addr);
+}
+
+static err_t netif_init_cb(struct netif *netif)
+{
+  LWIP_ASSERT("netif != NULL", (netif != NULL));
+  netif->mtu = CFG_TUD_NET_MTU;
+  netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP | NETIF_FLAG_UP;
+  netif->state = NULL;
+  netif->name[0] = 'E';
+  netif->name[1] = 'X';
+  netif->linkoutput = linkoutput_fn;
+  netif->output = output_fn;
+  return ERR_OK;
+}
+
+static void init_lwip(void)
+{
+  struct netif *netif = &netif_data;
+
+  lwip_init();
+  netif->hwaddr_len = sizeof(tud_network_mac_address);
+  memcpy(netif->hwaddr, tud_network_mac_address, sizeof(tud_network_mac_address));
+
+  netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, netif_init_cb, ip_input);
+  netif_set_default(netif);
+}
+
+/* handle any DNS requests from dns-server */
+bool dns_query_proc(const char *name, ip_addr_t *addr)
+{
+  if (0 == strcmp(name, "tiny.usb"))
+  {
+    *addr = ipaddr;
+    return true;
+  }
+  return false;
+}
+
+bool tud_network_recv_cb(struct pbuf *p)
+{
+  /* 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;
+
+  /* store away the pointer for service_traffic() to later handle */
+  received_frame = p;
+  return true;
+}
+
+static void service_traffic(void)
+{
+  /* handle any packet received by tud_network_recv_cb() */
+  if (received_frame)
+  {
+    ethernet_input(received_frame, &netif_data);
+    pbuf_free(received_frame);
+    received_frame = NULL;
+    tud_network_recv_renew();
+  }
+}
+
+void tud_network_init_cb(void)
+{
+  /* if the network is re-initializing and we have a leftover packet, we must do a cleanup */
+  if (received_frame)
+  {
+    pbuf_free(received_frame);
+    received_frame = NULL;
+  }
+}
+
+int main(void)
+{
+  /* initialize TinyUSB */
+  board_init();
+  tusb_init();
+
+  /* initialize lwip, dhcp-server, dns-server, and http */
+  init_lwip();
+  while (!netif_is_up(&netif_data));
+  while (dhserv_init(&dhcp_config) != ERR_OK);
+  while (dnserv_init(&ipaddr, 53, dns_query_proc) != ERR_OK);
+  httpd_init();
+
+  while (1)
+  {
+    tud_task();
+    service_traffic();
+  }
+
+  return 0;
+}
+
+/* lwip has provision for using a mutex, when applicable */
+sys_prot_t sys_arch_protect(void)
+{
+  return 0;
+}
+void sys_arch_unprotect(sys_prot_t pval)
+{
+  (void)pval;
+}
+
+/* lwip needs a millisecond time source, and the TinyUSB board support code has one available */
+uint32_t sys_now(void)
+{
+  return board_millis();
+}

examples/device/net_lwip_webserver/src/tusb_config.h

@@ -0,0 +1,90 @@
+/*
+ * 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
+
+//--------------------------------------------------------------------
+// COMMON CONFIGURATION
+//--------------------------------------------------------------------
+
+// defined by compiler flags for flexibility
+#ifndef CFG_TUSB_MCU
+  #error CFG_TUSB_MCU must be defined
+#endif
+
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
+#else
+#define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
+#endif
+
+#define CFG_TUSB_OS                 OPT_OS_NONE
+
+// CFG_TUSB_DEBUG is defined by compiler in DEBUG build
+// #define CFG_TUSB_DEBUG           0
+
+/* 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_CDC               0
+#define CFG_TUD_MSC               0
+#define CFG_TUD_HID               0
+#define CFG_TUD_MIDI              0
+#define CFG_TUD_VENDOR            0
+//#define CFG_TUD_NET               OPT_NET_ECM
+#define CFG_TUD_NET               OPT_NET_RNDIS
+//#define CFG_TUD_NET               OPT_NET_EEM
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* _TUSB_CONFIG_H_ */

examples/device/net_lwip_webserver/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 "tusb.h"
+#include "usb_descriptors.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]       NET1:NET0 | VENDOR | MIDI | HID | MSC | CDC          [LSB]
+ */
+#define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) | _PID_MAP(NET, 5) )
+
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
+tusb_desc_device_t const desc_device =
+{
+    .bLength            = sizeof(tusb_desc_device_t),
+    .bDescriptorType    = TUSB_DESC_DEVICE,
+    .bcdUSB             = 0x0200,
+
+    .bDeviceClass       = TUSB_CLASS_UNSPECIFIED,
+    .bDeviceSubClass    = 0,
+    .bDeviceProtocol    = 0,
+    .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
+
+    .idVendor           = 0xCafe,
+    .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
+};
+
+enum
+{
+  STR_LANGID = 0,
+  STR_MANUFACTURER,
+  STR_PRODUCT,
+  STR_ITFNAME,
+  STR_MAC,
+};
+
+#if CFG_TUD_NET == OPT_NET_ECM
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_ECM_DESC_LEN)
+#elif CFG_TUD_NET == OPT_NET_RNDIS
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_RNDIS_DESC_LEN)
+#elif CFG_TUD_NET == OPT_NET_EEM
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_EEM_DESC_LEN)
+#endif
+
+#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 etc ...
+  #define EPNUM_CDC     2
+#else
+  #define EPNUM_CDC     2
+#endif
+
+uint8_t const desc_configuration[] =
+{
+  // Interface count, string index, total length, attribute, power in mA
+  TUD_CONFIG_DESCRIPTOR(ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0, 100),
+
+#if CFG_TUD_NET == OPT_NET_ECM
+  // Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
+  TUD_CDC_ECM_DESCRIPTOR(ITF_NUM_CDC, STR_ITFNAME, STR_MAC, 0x81, 8, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
+#elif CFG_TUD_NET == OPT_NET_RNDIS
+  // Interface number, string index, EP notification address and size, EP data address (out, in) and size.
+  TUD_RNDIS_DESCRIPTOR(ITF_NUM_CDC, STR_ITFNAME, 0x81, 8, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE),
+#elif CFG_TUD_NET == OPT_NET_EEM
+  // Interface number, description string index, EP data address (out, in) and size.
+  TUD_CDC_EEM_DESCRIPTOR(ITF_NUM_CDC, STR_ITFNAME, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE),
+#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
+  return desc_configuration;
+}
+
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
+
+// array of pointer to string descriptors
+char const* string_desc_arr [] =
+{
+  [STR_LANGID]       = (const char[]) { 0x09, 0x04 }, // supported language is English (0x0409)
+  [STR_MANUFACTURER] = "TinyUSB",                     // Manufacturer
+  [STR_PRODUCT]      = "TinyUSB Device",              // Product
+  [STR_ITFNAME]      =                                // CDC-ECM Interface
+#if CFG_TUD_NET == OPT_NET_ECM
+                       "TinyUSB CDC-ECM",
+#elif CFG_TUD_NET == OPT_NET_RNDIS
+                       "TinyUSB RNDIS",
+#elif CFG_TUD_NET == OPT_NET_EEM
+                       "TinyUSB CDC-EEM",
+#endif
+};
+
+static uint16_t _desc_str[32];
+
+// 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;
+
+  unsigned chr_count = 0;
+
+  if (STR_LANGID == index)
+  {
+    memcpy(&_desc_str[1], string_desc_arr[0], 2);
+    chr_count = 1;
+  }
+  else if (STR_MAC == index)
+  {
+    // Convert MAC address into UTF-16
+
+    for (unsigned i=0; i<sizeof(tud_network_mac_address); i++)
+    {
+      _desc_str[1+chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 4) & 0xf];
+      _desc_str[1+chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 0) & 0xf];
+    }
+  }
+  else
+  {
+    // Convert ASCII string into UTF-16
+
+    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);
+    if ( chr_count > (TU_ARRAY_SIZE(_desc_str) - 1)) chr_count = TU_ARRAY_SIZE(_desc_str) - 1;
+
+    for (unsigned i=0; i<chr_count; i++)
+    {
+      _desc_str[1+i] = str[i];
+    }
+  }
+
+  // first byte is length (including header), second byte is string type
+  _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
+
+  return _desc_str;
+}

examples/device/net_lwip_webserver/src/usb_descriptors.h

@@ -0,0 +1,28 @@
+/* 
+ * 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 USB_DESCRIPTORS_H_
+#define USB_DESCRIPTORS_H_
+
+#endif /* USB_DESCRIPTORS_H_ */

examples/device/usbtmc/src/tusb_config.h

@@ -21,7 +21,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/usbtmc/src/usb_descriptors.c

@@ -216,8 +216,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   size_t chr_count;
 
   if ( index == 0)

examples/device/webusb_serial/src/tusb_config.h

@@ -39,7 +39,7 @@
   #error CFG_TUSB_MCU must be defined
 #endif
 
-#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX
+#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || CFG_TUSB_MCU == OPT_MCU_NUC505
 #define CFG_TUSB_RHPORT0_MODE       (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED)
 #else
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE

examples/device/webusb_serial/src/usb_descriptors.c

@@ -204,8 +204,10 @@ static uint16_t _desc_str[32];
 
 // 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 const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
+  (void) langid;
+
   uint8_t chr_count;
 
   if ( index == 0)

examples/rules.mk

@@ -22,6 +22,7 @@ SRC_C += \
 	src/class/midi/midi_device.c \
 	src/class/usbtmc/usbtmc_device.c \
 	src/class/vendor/vendor_device.c \
+	src/class/net/net_device.c \
 	src/portable/$(VENDOR)/$(CHIP_FAMILY)/dcd_$(CHIP_FAMILY).c
 
 # TinyUSB stack include
@@ -120,6 +121,7 @@ endif
 # Flash using jlink
 flash-jlink: $(BUILD)/$(BOARD)-firmware.hex
 	@echo halt > $(BUILD)/$(BOARD).jlink
+	@echo r > $(BUILD)/$(BOARD).jlink
 	@echo loadfile $^ >> $(BUILD)/$(BOARD).jlink
 	@echo r >> $(BUILD)/$(BOARD).jlink
 	@echo go >> $(BUILD)/$(BOARD).jlink

hw/bsp/adafruit_clue/adafruit_clue.c

@@ -0,0 +1,192 @@
+/* 
+ * 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 file is part of the TinyUSB stack.
+ */
+
+#include "bsp/board.h"
+
+#include "nrfx.h"
+#include "nrfx/hal/nrf_gpio.h"
+#include "nrfx/drivers/include/nrfx_power.h"
+
+#ifdef SOFTDEVICE_PRESENT
+#include "nrf_sdm.h"
+#include "nrf_soc.h"
+#endif
+
+/*------------------------------------------------------------------*/
+/* MACRO TYPEDEF CONSTANT ENUM
+ *------------------------------------------------------------------*/
+#define _PINNUM(port, pin)    ((port)*32 + (pin))
+
+#define LED_PIN         _PINNUM(1, 1)
+#define LED_STATE_ON    1
+
+#define BUTTON_PIN      _PINNUM(1, 02)
+
+// tinyusb function that handles power event (detected, ready, removed)
+// We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
+extern void tusb_hal_nrf_power_event(uint32_t event);
+
+void board_init(void)
+{
+  // Config clock source: XTAL or RC in sdk_config.h
+  NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
+  NRF_CLOCK->TASKS_LFCLKSTART = 1UL;
+
+  // LED
+  nrf_gpio_cfg_output(LED_PIN);
+  board_led_write(false);
+
+  // Button
+  nrf_gpio_cfg_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP);
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+  // 1ms tick timer
+  SysTick_Config(SystemCoreClock/1000);
+#endif
+
+#if TUSB_OPT_DEVICE_ENABLED
+  // Priorities 0, 1, 4 (nRF52) are reserved for SoftDevice
+  // 2 is highest for application
+  NVIC_SetPriority(USBD_IRQn, 2);
+
+
+  // USB power may already be ready at this time -> no event generated
+  // We need to invoke the handler based on the status initially
+  uint32_t usb_reg;
+
+#ifdef SOFTDEVICE_PRESENT
+  uint8_t sd_en = false;
+  sd_softdevice_is_enabled(&sd_en);
+
+  if ( sd_en ) {
+    sd_power_usbdetected_enable(true);
+    sd_power_usbpwrrdy_enable(true);
+    sd_power_usbremoved_enable(true);
+
+    sd_power_usbregstatus_get(&usb_reg);
+  }else
+#endif
+  {
+    // Power module init
+    const nrfx_power_config_t pwr_cfg = { 0 };
+    nrfx_power_init(&pwr_cfg);
+
+    // Register tusb function as USB power handler
+    const nrfx_power_usbevt_config_t config = { .handler = (nrfx_power_usb_event_handler_t) tusb_hal_nrf_power_event };
+    nrfx_power_usbevt_init(&config);
+
+    nrfx_power_usbevt_enable();
+
+    usb_reg = NRF_POWER->USBREGSTATUS;
+  }
+
+  if ( usb_reg & POWER_USBREGSTATUS_VBUSDETECT_Msk ) tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_DETECTED);
+  if ( usb_reg & POWER_USBREGSTATUS_OUTPUTRDY_Msk  ) tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_READY);
+#endif
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+  nrf_gpio_pin_write(LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
+}
+
+uint32_t board_button_read(void)
+{
+  // button is active LOW
+  return (nrf_gpio_pin_read(BUTTON_PIN) ? 0 : 1);
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+  (void) buf; (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  (void) buf; (void) len;
+  return 0;
+}
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+volatile uint32_t system_ticks = 0;
+void SysTick_Handler (void)
+{
+  system_ticks++;
+}
+
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+#endif
+
+#ifdef SOFTDEVICE_PRESENT
+// process SOC event from SD
+uint32_t proc_soc(void)
+{
+  uint32_t soc_evt;
+  uint32_t err = sd_evt_get(&soc_evt);
+
+  if (NRF_SUCCESS == err)
+  {
+    /*------------- usb power event handler -------------*/
+    int32_t usbevt = (soc_evt == NRF_EVT_POWER_USB_DETECTED   ) ? NRFX_POWER_USB_EVT_DETECTED:
+                     (soc_evt == NRF_EVT_POWER_USB_POWER_READY) ? NRFX_POWER_USB_EVT_READY   :
+                     (soc_evt == NRF_EVT_POWER_USB_REMOVED    ) ? NRFX_POWER_USB_EVT_REMOVED : -1;
+
+    if ( usbevt >= 0) tusb_hal_nrf_power_event(usbevt);
+  }
+
+  return err;
+}
+
+uint32_t proc_ble(void)
+{
+  // do nothing with ble
+  return NRF_ERROR_NOT_FOUND;
+}
+
+void SD_EVT_IRQHandler(void)
+{
+  // process BLE and SOC until there is no more events
+  while( (NRF_ERROR_NOT_FOUND != proc_ble()) || (NRF_ERROR_NOT_FOUND != proc_soc()) )
+  {
+
+  }
+}
+
+void nrf_error_cb(uint32_t id, uint32_t pc, uint32_t info)
+{
+  (void) id;
+  (void) pc;
+  (void) info;
+}
+#endif

hw/bsp/adafruit_clue/board.mk

@@ -0,0 +1,63 @@
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -DCFG_TUSB_MCU=OPT_MCU_NRF5X \
+  -DNRF52840_XXAA \
+  -DCONFIG_GPIO_AS_PINRESET
+
+# nrfx issue undef _ARMCC_VERSION usage https://github.com/NordicSemiconductor/nrfx/issues/49
+CFLAGS += -Wno-error=undef -Wno-error=unused-parameter
+
+# due to tusb_hal_nrf_power_event
+GCCVERSION = $(firstword $(subst ., ,$(shell arm-none-eabi-gcc -dumpversion)))
+ifeq ($(shell expr $(GCCVERSION) \>= 8), 1)
+CFLAGS += -Wno-error=cast-function-type
+endif
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/$(BOARD)/nrf52840_s140_v6.ld
+
+LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
+
+SRC_C += \
+  hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
+  hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
+
+INC += \
+  $(TOP)/hw/mcu/nordic/cmsis/Include \
+  $(TOP)/hw/mcu/nordic \
+  $(TOP)/hw/mcu/nordic/nrfx \
+  $(TOP)/hw/mcu/nordic/nrfx/mdk \
+  $(TOP)/hw/mcu/nordic/nrfx/hal \
+  $(TOP)/hw/mcu/nordic/nrfx/drivers/include \
+  $(TOP)/hw/mcu/nordic/nrfx/drivers/src \
+
+SRC_S += hw/mcu/nordic/nrfx/mdk/gcc_startup_nrf52840.S
+
+ASFLAGS += -D__HEAP_SIZE=0
+
+# For TinyUSB port source
+VENDOR = nordic
+CHIP_FAMILY = nrf5x
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM4F
+
+# For flash-jlink target
+JLINK_DEVICE = nRF52840_xxAA
+JLINK_IF = swd
+
+# For uf2 conversion
+UF2_FAMILY = 0xADA52840
+
+$(BUILD)/$(BOARD)-firmware.zip: $(BUILD)/$(BOARD)-firmware.hex
+	adafruit-nrfutil dfu genpkg --dev-type 0x0052 --sd-req 0xFFFE --application $^ $@
+	
+# flash using adafruit-nrfutil dfu
+flash: $(BUILD)/$(BOARD)-firmware.zip
+	@:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyACM0)
+	adafruit-nrfutil --verbose dfu serial --package $^ -p $(SERIAL) -b 115200 --singlebank --touch 1200

hw/bsp/adafruit_clue/nrf52840_s140_v6.ld

@@ -0,0 +1,38 @@
+/* Linker script to configure memory regions. */
+
+SEARCH_DIR(.)
+GROUP(-lgcc -lc -lnosys)
+
+MEMORY
+{
+  FLASH (rx)     : ORIGIN = 0x26000, LENGTH = 0xED000 - 0x26000
+
+  /* SRAM required by S132 depend on
+   * - Attribute Table Size
+   * - Vendor UUID count
+   * - Max ATT MTU
+   * - Concurrent connection peripheral + central + secure links
+   * - Event Len, HVN queue, Write CMD queue
+   */ 
+  RAM (rwx) :  ORIGIN = 0x20003400, LENGTH = 0x20040000 - 0x20003400
+}
+
+SECTIONS
+{
+  . = ALIGN(4);
+  .svc_data :
+  {
+    PROVIDE(__start_svc_data = .);
+    KEEP(*(.svc_data))
+    PROVIDE(__stop_svc_data = .);
+  } > RAM
+  
+  .fs_data :
+  {
+    PROVIDE(__start_fs_data = .);
+    KEEP(*(.fs_data))
+    PROVIDE(__stop_fs_data = .);
+  } > RAM
+} INSERT AFTER .data;
+
+INCLUDE "nrf52_common.ld"

hw/bsp/board.h

@@ -39,7 +39,6 @@
 #include <stdbool.h>
 
 #include "ansi_escape.h"
-
 #include "tusb.h"
 
 #define CFG_BOARD_UART_BAUDRATE    115200
@@ -68,18 +67,21 @@ int board_uart_write(void const * buf, int len);
 #if CFG_TUSB_OS == OPT_OS_NONE
   // Get current milliseconds, must be implemented when no RTOS is used
   uint32_t board_millis(void);
+
 #elif CFG_TUSB_OS == OPT_OS_FREERTOS
   static inline uint32_t board_millis(void)
   {
     return ( ( ((uint64_t) xTaskGetTickCount()) * 1000) / configTICK_RATE_HZ );
   }
+
 #elif CFG_TUSB_OS == OPT_OS_MYNEWT
   static inline uint32_t board_millis(void)
   {
     return os_time_ticks_to_ms32( os_time_get() );
   }
+
 #else
-  #error "Need to implement board_millis() for this OS"
+  #error "board_millis() is not implemented for this OS"
 #endif
 
 //--------------------------------------------------------------------+
@@ -95,6 +97,7 @@ static inline void board_led_off(void)
   board_led_write(false);
 }
 
+// TODO remove
 static inline void board_delay(uint32_t ms)
 {
   uint32_t start_ms = board_millis();

hw/bsp/circuitplayground_bluefruit/board.mk

@@ -19,7 +19,7 @@ CFLAGS += -Wno-error=cast-function-type
 endif
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/circuitplayground_bluefruit/nrf52840_s140_v6.ld
+LD_FILE = hw/bsp/$(BOARD)/nrf52840_s140_v6.ld
 
 LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
 

hw/bsp/circuitplayground_express/board.mk

@@ -8,7 +8,7 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAMD21
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/circuitplayground_express/samd21g18a_flash.ld
+LD_FILE = hw/bsp/$(BOARD)/samd21g18a_flash.ld
 
 SRC_C += \
   hw/mcu/microchip/samd/asf4/samd21/gcc/gcc/startup_samd21.c \
@@ -41,4 +41,5 @@ JLINK_DEVICE = ATSAMD21G18
 JLINK_IF = swd
 
 # flash using jlink
-flash: flash-jlink
+flash: $(BUILD)/$(BOARD)-firmware.uf2
+	cp $< /media/$(USER)/CPLAYBOOT/

hw/bsp/circuitplayground_express/circuitplayground_express.c

@@ -60,6 +60,11 @@ void board_init(void)
   _sysctrl_init_referenced_generators();
   _gclk_init_generators_by_fref(_GCLK_INIT_LAST);
 
+  // Update SystemCoreClock since it is hard coded with asf4 and not correct
+  // Init 1ms tick timer (samd SystemCoreClock may not correct)
+  SystemCoreClock = CONF_CPU_FREQUENCY;
+  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+
   // Led init
   gpio_set_pin_direction(LED_PIN, GPIO_DIRECTION_OUT);
   gpio_set_pin_level(LED_PIN, 0);
@@ -68,9 +73,9 @@ void board_init(void)
   gpio_set_pin_direction(BUTTON_PIN, GPIO_DIRECTION_IN);
   gpio_set_pin_pull_mode(BUTTON_PIN, GPIO_PULL_DOWN);
 
-#if CFG_TUSB_OS  == OPT_OS_NONE
+#if CFG_TUSB_OS  == OPT_OS_FREERTOS
-  // 1ms tick timer (samd SystemCoreClock may not correct)
+  // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
-  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+  NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
 #endif
 
   /* USB Clock init

hw/bsp/ea4088qs/board.mk

@@ -15,7 +15,7 @@ CFLAGS += -Wno-error=strict-prototypes -Wno-error=unused-parameter
 MCU_DIR = hw/mcu/nxp/lpcopen/lpc40xx/lpc_chip_40xx
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/ea4088qs/lpc4088.ld
+LD_FILE = hw/bsp/$(BOARD)/lpc4088.ld
 
 SRC_C += \
 	$(MCU_DIR)/../gcc/cr_startup_lpc40xx.c \

hw/bsp/ea4357/board.mk

@@ -3,6 +3,8 @@ CFLAGS += \
   -mthumb \
   -mabi=aapcs \
   -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
   -nostdlib \
   -DCORE_M4 \
   -DCFG_TUSB_MCU=OPT_MCU_LPC43XX \
@@ -14,7 +16,7 @@ CFLAGS += -Wno-error=unused-parameter -Wno-error=strict-prototypes
 MCU_DIR = hw/mcu/nxp/lpcopen/lpc43xx/lpc_chip_43xx
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/ea4357/lpc4357.ld
+LD_FILE = hw/bsp/$(BOARD)/lpc4357.ld
 
 SRC_C += \
 	$(MCU_DIR)/../gcc/cr_startup_lpc43xx.c \
@@ -35,7 +37,7 @@ VENDOR = nxp
 CHIP_FAMILY = transdimension
 
 # For freeRTOS port source
-FREERTOS_PORT = ARM_CM4
+FREERTOS_PORT = ARM_CM4F
 
 # For flash-jlink target
 JLINK_DEVICE = LPC4357

hw/bsp/feather_m0_express/board.mk

@@ -9,7 +9,7 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAMD21
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/feather_m0_express/samd21g18a_flash.ld
+LD_FILE = hw/bsp/$(BOARD)/samd21g18a_flash.ld
 
 SRC_C += \
 	hw/mcu/microchip/samd/asf4/samd21/gcc/gcc/startup_samd21.c \
@@ -25,7 +25,7 @@ INC += \
 	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/include \
 	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hal/include \
 	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hal/utils/include \
-	$(TOP)/hw/mcu/microchip/samd/asf4/samd51/hpl/pm/ \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hpl/pm/ \
 	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hpl/port \
 	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hri \
 	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/CMSIS/Include

hw/bsp/feather_m0_express/feather_m0_express.c

@@ -60,6 +60,11 @@ void board_init(void)
   _sysctrl_init_referenced_generators();
   _gclk_init_generators_by_fref(_GCLK_INIT_LAST);
 
+  // Update SystemCoreClock since it is hard coded with asf4 and not correct
+  // Init 1ms tick timer (samd SystemCoreClock may not correct)
+  SystemCoreClock = CONF_CPU_FREQUENCY;
+  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+
   // Led init
   gpio_set_pin_direction(LED_PIN, GPIO_DIRECTION_OUT);
   gpio_set_pin_level(LED_PIN, 0);
@@ -68,9 +73,9 @@ void board_init(void)
   gpio_set_pin_direction(BUTTON_PIN, GPIO_DIRECTION_IN);
   gpio_set_pin_pull_mode(BUTTON_PIN, GPIO_PULL_UP);
 
-#if CFG_TUSB_OS  == OPT_OS_NONE
+#if CFG_TUSB_OS  == OPT_OS_FREERTOS
-  // 1ms tick timer (samd SystemCoreClock may not correct)
+  // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
-  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+  NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
 #endif
 
   /* USB Clock init

hw/bsp/feather_m4_express/board.mk

@@ -12,7 +12,7 @@ CFLAGS += \
 CFLAGS += -Wno-error=undef
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/metro_m4_express/samd51g19a_flash.ld
+LD_FILE = hw/bsp/$(BOARD)/samd51g19a_flash.ld
 
 SRC_C += \
 	hw/mcu/microchip/samd/asf4/samd51/gcc/gcc/startup_samd51.c \

hw/bsp/feather_m4_express/feather_m4_express.c

@@ -58,6 +58,11 @@ void board_init(void)
   _oscctrl_init_referenced_generators();
   _gclk_init_generators_by_fref(_GCLK_INIT_LAST);
 
+  // Update SystemCoreClock since it is hard coded with asf4 and not correct
+  // Init 1ms tick timer (samd SystemCoreClock may not correct)
+  SystemCoreClock = CONF_CPU_FREQUENCY;
+  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+
   // Led init
   gpio_set_pin_direction(LED_PIN, GPIO_DIRECTION_OUT);
   gpio_set_pin_level(LED_PIN, 0);
@@ -66,9 +71,12 @@ void board_init(void)
   gpio_set_pin_direction(BUTTON_PIN, GPIO_DIRECTION_IN);
   gpio_set_pin_pull_mode(BUTTON_PIN, GPIO_PULL_UP);
 
-#if CFG_TUSB_OS  == OPT_OS_NONE
+#if CFG_TUSB_OS  == OPT_OS_FREERTOS
-  // 1ms tick timer (samd SystemCoreClock may not correct)
+  // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
-  SysTick_Config(CONF_CPU_FREQUENCY / 1000);
+  NVIC_SetPriority(USB_0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
+  NVIC_SetPriority(USB_1_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
+  NVIC_SetPriority(USB_2_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
+  NVIC_SetPriority(USB_3_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
 #endif
 
   /* USB Clock init

hw/bsp/feather_nrf52840_express/board.mk

@@ -19,13 +19,14 @@ CFLAGS += -Wno-error=cast-function-type
 endif
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/feather_nrf52840_express/nrf52840_s140_v6.ld
+LD_FILE = hw/bsp/$(BOARD)/nrf52840_s140_v6.ld
 
 LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
 
 SRC_C += \
   hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
-  hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
+  hw/mcu/nordic/nrfx/drivers/src/nrfx_uarte.c \
+  hw/mcu/nordic/nrfx/mdk/system_nrf52840.c
 
 INC += \
   $(TOP)/hw/mcu/nordic/cmsis/Include \

hw/bsp/feather_nrf52840_express/feather_nrf52840_express.c

@@ -29,6 +29,7 @@
 #include "nrfx.h"
 #include "nrfx/hal/nrf_gpio.h"
 #include "nrfx/drivers/include/nrfx_power.h"
+#include "nrfx/drivers/include/nrfx_uarte.h"
 
 #ifdef SOFTDEVICE_PRESENT
 #include "nrf_sdm.h"
@@ -45,12 +46,20 @@
 
 #define BUTTON_PIN      _PINNUM(1, 02)
 
+#define UART_RX_PIN     24
+#define UART_TX_PIN     25
+
+static nrfx_uarte_t _uart_id = NRFX_UARTE_INSTANCE(0);
+
 // tinyusb function that handles power event (detected, ready, removed)
 // We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
 extern void tusb_hal_nrf_power_event(uint32_t event);
 
 void board_init(void)
 {
+  // stop LF clock just in case we jump from application without reset
+  NRF_CLOCK->TASKS_LFCLKSTOP = 1UL;
+
   // Config clock source: XTAL or RC in sdk_config.h
   NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
   NRF_CLOCK->TASKS_LFCLKSTART = 1UL;
@@ -62,17 +71,32 @@ void board_init(void)
   // Button
   nrf_gpio_cfg_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP);
 
-#if CFG_TUSB_OS == OPT_OS_NONE
   // 1ms tick timer
   SysTick_Config(SystemCoreClock/1000);
-#endif
+
+  // UART
+  nrfx_uarte_config_t uart_cfg =
+  {
+    .pseltxd   = UART_TX_PIN,
+    .pselrxd   = UART_RX_PIN,
+    .pselcts   = NRF_UARTE_PSEL_DISCONNECTED,
+    .pselrts   = NRF_UARTE_PSEL_DISCONNECTED,
+    .p_context = NULL,
+    .baudrate  = NRF_UARTE_BAUDRATE_115200, // CFG_BOARD_UART_BAUDRATE
+    .interrupt_priority = 7,
+    .hal_cfg = {
+      .hwfc      = NRF_UARTE_HWFC_DISABLED,
+      .parity    = NRF_UARTE_PARITY_EXCLUDED,
+    }
+  };
+
+  nrfx_uarte_init(&_uart_id, &uart_cfg, NULL); //uart_handler);
 
 #if TUSB_OPT_DEVICE_ENABLED
   // Priorities 0, 1, 4 (nRF52) are reserved for SoftDevice
   // 2 is highest for application
   NVIC_SetPriority(USBD_IRQn, 2);
 
-
   // USB power may already be ready at this time -> no event generated
   // We need to invoke the handler based on the status initially
   uint32_t usb_reg;
@@ -127,12 +151,12 @@ int board_uart_read(uint8_t* buf, int len)
 {
   (void) buf; (void) len;
   return 0;
+//  return NRFX_SUCCESS == nrfx_uart_rx(&_uart_id, buf, (size_t) len) ? len : 0;
 }
 
 int board_uart_write(void const * buf, int len)
 {
-  (void) buf; (void) len;
+  return (NRFX_SUCCESS == nrfx_uarte_tx(&_uart_id, (uint8_t const*) buf, (size_t) len)) ? len : 0;
-  return 0;
 }
 
 #if CFG_TUSB_OS == OPT_OS_NONE

hw/bsp/feather_nrf52840_sense/board.mk

@@ -0,0 +1,63 @@
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -DCFG_TUSB_MCU=OPT_MCU_NRF5X \
+  -DNRF52840_XXAA \
+  -DCONFIG_GPIO_AS_PINRESET
+
+# nrfx issue undef _ARMCC_VERSION usage https://github.com/NordicSemiconductor/nrfx/issues/49
+CFLAGS += -Wno-error=undef -Wno-error=unused-parameter
+
+# due to tusb_hal_nrf_power_event
+GCCVERSION = $(firstword $(subst ., ,$(shell arm-none-eabi-gcc -dumpversion)))
+ifeq ($(shell expr $(GCCVERSION) \>= 8), 1)
+CFLAGS += -Wno-error=cast-function-type
+endif
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/$(BOARD)/nrf52840_s140_v6.ld
+
+LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
+
+SRC_C += \
+  hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
+  hw/mcu/nordic/nrfx/mdk/system_nrf52840.c \
+
+INC += \
+  $(TOP)/hw/mcu/nordic/cmsis/Include \
+  $(TOP)/hw/mcu/nordic \
+  $(TOP)/hw/mcu/nordic/nrfx \
+  $(TOP)/hw/mcu/nordic/nrfx/mdk \
+  $(TOP)/hw/mcu/nordic/nrfx/hal \
+  $(TOP)/hw/mcu/nordic/nrfx/drivers/include \
+  $(TOP)/hw/mcu/nordic/nrfx/drivers/src \
+
+SRC_S += hw/mcu/nordic/nrfx/mdk/gcc_startup_nrf52840.S
+
+ASFLAGS += -D__HEAP_SIZE=0
+
+# For TinyUSB port source
+VENDOR = nordic
+CHIP_FAMILY = nrf5x
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM4F
+
+# For flash-jlink target
+JLINK_DEVICE = nRF52840_xxAA
+JLINK_IF = swd
+
+# For uf2 conversion
+UF2_FAMILY = 0xADA52840
+
+$(BUILD)/$(BOARD)-firmware.zip: $(BUILD)/$(BOARD)-firmware.hex
+	adafruit-nrfutil dfu genpkg --dev-type 0x0052 --sd-req 0xFFFE --application $^ $@
+	
+# flash using adafruit-nrfutil dfu
+flash: $(BUILD)/$(BOARD)-firmware.zip
+	@:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyACM0)
+	adafruit-nrfutil --verbose dfu serial --package $^ -p $(SERIAL) -b 115200 --singlebank --touch 1200

hw/bsp/feather_nrf52840_sense/feather_nrf52840_sense.c

@@ -0,0 +1,189 @@
+/* 
+ * 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 file is part of the TinyUSB stack.
+ */
+
+#include "bsp/board.h"
+
+#include "nrfx.h"
+#include "nrfx/hal/nrf_gpio.h"
+#include "nrfx/drivers/include/nrfx_power.h"
+
+#ifdef SOFTDEVICE_PRESENT
+#include "nrf_sdm.h"
+#include "nrf_soc.h"
+#endif
+
+/*------------------------------------------------------------------*/
+/* MACRO TYPEDEF CONSTANT ENUM
+ *------------------------------------------------------------------*/
+#define _PINNUM(port, pin)    ((port)*32 + (pin))
+
+#define LED_PIN         _PINNUM(1, 9)
+#define LED_STATE_ON    1
+
+#define BUTTON_PIN      _PINNUM(1, 02)
+
+// tinyusb function that handles power event (detected, ready, removed)
+// We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
+extern void tusb_hal_nrf_power_event(uint32_t event);
+
+void board_init(void)
+{
+  // Config clock source: XTAL or RC in sdk_config.h
+  NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
+  NRF_CLOCK->TASKS_LFCLKSTART = 1UL;
+
+  // LED
+  nrf_gpio_cfg_output(LED_PIN);
+  board_led_write(false);
+
+  // Button
+  nrf_gpio_cfg_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP);
+
+  // 1ms tick timer
+  SysTick_Config(SystemCoreClock/1000);
+
+#if TUSB_OPT_DEVICE_ENABLED
+  // Priorities 0, 1, 4 (nRF52) are reserved for SoftDevice
+  // 2 is highest for application
+  NVIC_SetPriority(USBD_IRQn, 2);
+
+  // USB power may already be ready at this time -> no event generated
+  // We need to invoke the handler based on the status initially
+  uint32_t usb_reg;
+
+#ifdef SOFTDEVICE_PRESENT
+  uint8_t sd_en = false;
+  sd_softdevice_is_enabled(&sd_en);
+
+  if ( sd_en ) {
+    sd_power_usbdetected_enable(true);
+    sd_power_usbpwrrdy_enable(true);
+    sd_power_usbremoved_enable(true);
+
+    sd_power_usbregstatus_get(&usb_reg);
+  }else
+#endif
+  {
+    // Power module init
+    const nrfx_power_config_t pwr_cfg = { 0 };
+    nrfx_power_init(&pwr_cfg);
+
+    // Register tusb function as USB power handler
+    const nrfx_power_usbevt_config_t config = { .handler = (nrfx_power_usb_event_handler_t) tusb_hal_nrf_power_event };
+    nrfx_power_usbevt_init(&config);
+
+    nrfx_power_usbevt_enable();
+
+    usb_reg = NRF_POWER->USBREGSTATUS;
+  }
+
+  if ( usb_reg & POWER_USBREGSTATUS_VBUSDETECT_Msk ) tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_DETECTED);
+  if ( usb_reg & POWER_USBREGSTATUS_OUTPUTRDY_Msk  ) tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_READY);
+#endif
+}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+  nrf_gpio_pin_write(LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
+}
+
+uint32_t board_button_read(void)
+{
+  // button is active LOW
+  return (nrf_gpio_pin_read(BUTTON_PIN) ? 0 : 1);
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+  (void) buf; (void) len;
+  return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+  (void) buf; (void) len;
+  return 0;
+}
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+volatile uint32_t system_ticks = 0;
+void SysTick_Handler (void)
+{
+  system_ticks++;
+}
+
+uint32_t board_millis(void)
+{
+  return system_ticks;
+}
+#endif
+
+#ifdef SOFTDEVICE_PRESENT
+// process SOC event from SD
+uint32_t proc_soc(void)
+{
+  uint32_t soc_evt;
+  uint32_t err = sd_evt_get(&soc_evt);
+
+  if (NRF_SUCCESS == err)
+  {
+    /*------------- usb power event handler -------------*/
+    int32_t usbevt = (soc_evt == NRF_EVT_POWER_USB_DETECTED   ) ? NRFX_POWER_USB_EVT_DETECTED:
+                     (soc_evt == NRF_EVT_POWER_USB_POWER_READY) ? NRFX_POWER_USB_EVT_READY   :
+                     (soc_evt == NRF_EVT_POWER_USB_REMOVED    ) ? NRFX_POWER_USB_EVT_REMOVED : -1;
+
+    if ( usbevt >= 0) tusb_hal_nrf_power_event(usbevt);
+  }
+
+  return err;
+}
+
+uint32_t proc_ble(void)
+{
+  // do nothing with ble
+  return NRF_ERROR_NOT_FOUND;
+}
+
+void SD_EVT_IRQHandler(void)
+{
+  // process BLE and SOC until there is no more events
+  while( (NRF_ERROR_NOT_FOUND != proc_ble()) || (NRF_ERROR_NOT_FOUND != proc_soc()) )
+  {
+
+  }
+}
+
+void nrf_error_cb(uint32_t id, uint32_t pc, uint32_t info)
+{
+  (void) id;
+  (void) pc;
+  (void) info;
+}
+#endif

hw/bsp/feather_nrf52840_sense/nrf52840_s140_v6.ld

@@ -0,0 +1,38 @@
+/* Linker script to configure memory regions. */
+
+SEARCH_DIR(.)
+GROUP(-lgcc -lc -lnosys)
+
+MEMORY
+{
+  FLASH (rx)     : ORIGIN = 0x26000, LENGTH = 0xED000 - 0x26000
+
+  /* SRAM required by S132 depend on
+   * - Attribute Table Size
+   * - Vendor UUID count
+   * - Max ATT MTU
+   * - Concurrent connection peripheral + central + secure links
+   * - Event Len, HVN queue, Write CMD queue
+   */ 
+  RAM (rwx) :  ORIGIN = 0x20003400, LENGTH = 0x20040000 - 0x20003400
+}
+
+SECTIONS
+{
+  . = ALIGN(4);
+  .svc_data :
+  {
+    PROVIDE(__start_svc_data = .);
+    KEEP(*(.svc_data))
+    PROVIDE(__stop_svc_data = .);
+  } > RAM
+  
+  .fs_data :
+  {
+    PROVIDE(__start_fs_data = .);
+    KEEP(*(.fs_data))
+    PROVIDE(__stop_fs_data = .);
+  } > RAM
+} INSERT AFTER .data;
+
+INCLUDE "nrf52_common.ld"

hw/bsp/feather_stm32f405/board.mk

@@ -13,7 +13,7 @@ ST_HAL_DRIVER = hw/mcu/st/st_driver/STM32F4xx_HAL_Driver
 ST_CMSIS = hw/mcu/st/st_driver/CMSIS/Device/ST/STM32F4xx
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/pyboardv11/STM32F405RGTx_FLASH.ld
+LD_FILE = hw/bsp/$(BOARD)/STM32F405RGTx_FLASH.ld
 
 SRC_C += \
 	$(ST_CMSIS)/Source/Templates/system_stm32f4xx.c \

hw/bsp/fomu/board.mk

@@ -9,7 +9,7 @@ MCU_DIR = hw/mcu/fomu
 BSP_DIR = hw/bsp/fomu
 
 # All source paths should be relative to the top level.
-LD_FILE = hw/bsp/fomu/fomu.ld
+LD_FILE = hw/bsp/$(BOARD)/fomu.ld
 
 # TODO remove later
 SRC_C += src/portable/$(VENDOR)/$(CHIP_FAMILY)/hal_$(CHIP_FAMILY).c
@@ -25,6 +25,9 @@ INC += \
 VENDOR = valentyusb
 CHIP_FAMILY = eptri
 
+# For freeRTOS port source
+FREERTOS_PORT = RISC-V
+
 # flash using dfu-util
 flash: $(BUILD)/$(BOARD)-firmware.dfu
 	dfu-util -D $^

hw/bsp/itsybitsy_m0/board.mk

@@ -0,0 +1,45 @@
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mabi=aapcs-linux \
+  -mcpu=cortex-m0plus \
+  -nostdlib -nostartfiles \
+  -D__SAMD21G18A__ \
+  -DCONF_DFLL_OVERWRITE_CALIBRATION=0 \
+  -DCFG_TUSB_MCU=OPT_MCU_SAMD21
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/$(BOARD)/samd21g18a_flash.ld
+
+SRC_C += \
+	hw/mcu/microchip/samd/asf4/samd21/gcc/gcc/startup_samd21.c \
+	hw/mcu/microchip/samd/asf4/samd21/gcc/system_samd21.c \
+	hw/mcu/microchip/samd/asf4/samd21/hpl/gclk/hpl_gclk.c \
+	hw/mcu/microchip/samd/asf4/samd21/hpl/pm/hpl_pm.c \
+	hw/mcu/microchip/samd/asf4/samd21/hpl/sysctrl/hpl_sysctrl.c \
+	hw/mcu/microchip/samd/asf4/samd21/hal/src/hal_atomic.c
+
+INC += \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/ \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/config \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/include \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hal/include \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hal/utils/include \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hpl/pm/ \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hpl/port \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/hri \
+	$(TOP)/hw/mcu/microchip/samd/asf4/samd21/CMSIS/Include
+
+# For TinyUSB port source 
+VENDOR = microchip
+CHIP_FAMILY = samd
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM0
+
+# For flash-jlink target
+JLINK_DEVICE = ATSAMD21G18
+JLINK_IF = swd
+
+# flash using jlink
+flash: flash-jlink