Merge pull request #214 from hathach/develop

Added nRF52833 support

16 files changed, 623 insertions, 37 deletions

diff --git a/README.md b/README.md
index 02fb8257c..2e61c75e5 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ TinyUSB is an open-source cross-platform USB Host/Device stack for embedded syst
 
 The stack supports the following MCUs
 
-- **Nordic:** nRF52840
+- **Nordic:** nRF52840, nRF52833
 - **NXP:** LPC Series: 11Uxx, 13xx, 175x_6x, 177x_8x, 18xx, 40xx, 43xx, 51Uxx, 54xxx, 55xx
 - **MicroChip:** SAMD21, SAMD51 (device only)
 - **Sony:** CXD56
diff --git a/docs/boards.md b/docs/boards.md
index 608cbf4eb..3ca4d458b 100644
--- a/docs/boards.md
+++ b/docs/boards.md
@@ -21,8 +21,10 @@ This code base already had supported for a handful of following boards
 
 - [Adafruit Feather nRF52840 Express](https://www.adafruit.com/product/4062)
 - [Adafruit Circuit Playground Bluefruit](https://www.adafruit.com/product/4333)
+- [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)
+- [Nordic nRF52833 Development Kit (aka pca10100)](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52833-DK)
 
 ### NXP LPC
 
@@ -45,7 +47,7 @@ This code base already had supported for a handful of following boards
 
 ### ST STM32
 
-- Adafruit Feather STM32F405 
+- [Adafruit Feather STM32F405](https://www.adafruit.com/product/4382)
 - [Micro Python PyBoard v1.1](https://store.micropython.org/product/PYBv1.1)
 - [STM32 L035c8 Discovery](https://www.st.com/en/evaluation-tools/32l0538discovery.html)
 - [STM32 F070rb Nucleo](https://www.st.com/en/evaluation-tools/nucleo-f070rb.html)
diff --git a/examples/device/cdc_msc/src/main.c b/examples/device/cdc_msc/src/main.c
index e1b9ab113..a407e2ddd 100644
--- a/examples/device/cdc_msc/src/main.c
+++ b/examples/device/cdc_msc/src/main.c
@@ -136,7 +136,7 @@ void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
   if ( dtr && rts )
   {
     // print initial message when connected
-    tud_cdc_write_str("\r\nTinyUSB CDC MSC HID device example\r\n");
+    tud_cdc_write_str("\r\nTinyUSB CDC MSC device example\r\n");
   }
 }
 
diff --git a/hw/bsp/feather_stm32f405/board.mk b/hw/bsp/feather_stm32f405/board.mk
index ef9777976..14595e83e 100644
--- a/hw/bsp/feather_stm32f405/board.mk
+++ b/hw/bsp/feather_stm32f405/board.mk
@@ -20,7 +20,8 @@ SRC_C += \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal.c \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_cortex.c \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_rcc.c \
-	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_gpio.c
+	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_gpio.c \
+	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_uart.c
 
 SRC_S += \
 	$(ST_CMSIS)/Source/Templates/gcc/startup_stm32f405xx.s
@@ -46,5 +47,5 @@ JLINK_IF = swd
 STM32Prog = STM32_Programmer_CLI
 
 # flash target using on-board stlink
-flash: $(BUILD)/$(BOARD)-firmware.elf
-	$(STM32Prog) --connect port=swd --write $< --go
+flash: $(BUILD)/$(BOARD)-firmware.bin
+	dfu-util -R -a 0 --dfuse-address 0x08000000 -D $<
diff --git a/hw/bsp/feather_stm32f405/feather_stm32f405.c b/hw/bsp/feather_stm32f405/feather_stm32f405.c
index 0bc40ece0..aec779ea3 100644
--- a/hw/bsp/feather_stm32f405/feather_stm32f405.c
+++ b/hw/bsp/feather_stm32f405/feather_stm32f405.c
@@ -31,7 +31,7 @@
 
 // Blue LED is chosen because the other LEDs are connected to ST-LINK lines.
 #define LED_PORT              GPIOC
-#define LED_PIN               GPIO_PIN_4
+#define LED_PIN               GPIO_PIN_1
 #define LED_STATE_ON          1
 
 // Pin D5
@@ -39,6 +39,24 @@
 #define BUTTON_PIN            GPIO_PIN_7
 #define BUTTON_STATE_ACTIVE   0
 
+#define UARTx                 USART3
+#define UART_GPIO_PORT        GPIOB
+#define UART_GPIO_AF          GPIO_AF7_USART3
+#define UART_TX_PIN           GPIO_PIN_10
+#define UART_RX_PIN           GPIO_PIN_11
+
+UART_HandleTypeDef UartHandle;
+
+
+// enable all LED, Button, Uart, USB clock
+static void all_rcc_clk_enable(void)
+{
+  __HAL_RCC_GPIOA_CLK_ENABLE();  // USB D+, D-
+  __HAL_RCC_GPIOC_CLK_ENABLE();  // LED, Button
+  __HAL_RCC_GPIOB_CLK_ENABLE();  // Uart tx, rx
+  __HAL_RCC_USART3_CLK_ENABLE(); // Uart module
+}
+
 /**
   * @brief  System Clock Configuration
   *         The system Clock is configured as follow :
@@ -104,14 +122,13 @@ void board_init(void)
 #endif
 
   SystemClock_Config();
-
-  // Notify runtime of frequency change.
   SystemCoreClockUpdate();
 
+  all_rcc_clk_enable();
+
   GPIO_InitTypeDef  GPIO_InitStruct;
 
   // LED
-  __HAL_RCC_GPIOC_CLK_ENABLE();
   GPIO_InitStruct.Pin = LED_PIN;
   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
   GPIO_InitStruct.Pull = GPIO_PULLUP;
@@ -121,19 +138,25 @@ void board_init(void)
   board_led_write(false);
 
   // Button
-  //__HAL_RCC_GPIOC_CLK_ENABLE();
   GPIO_InitStruct.Pin = BUTTON_PIN;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
   GPIO_InitStruct.Pull = GPIO_PULLUP;
   GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
   HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
 
+  // Uart
+  GPIO_InitStruct.Pin       = UART_TX_PIN | UART_RX_PIN;
+  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull      = GPIO_PULLUP;
+  GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.Alternate = UART_GPIO_AF;
+  HAL_GPIO_Init(UART_GPIO_PORT, &GPIO_InitStruct);
+
   // Enable USB OTG clock
   __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
 
   // USB Pin Init
   // PA9- VUSB, PA10- ID, PA11- DM, PA12- DP
-  __HAL_RCC_GPIOA_CLK_ENABLE();
 
   /* Configure DM DP Pins */
   GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12;
@@ -180,8 +203,8 @@ int board_uart_read(uint8_t* buf, int len)
 
 int board_uart_write(void const * buf, int len)
 {
-  (void) buf; (void) len;
-  return 0;
+  HAL_UART_Transmit(&UartHandle, (uint8_t*) buf, len, 0xffff);
+  return len;
 }
 
 #if CFG_TUSB_OS  == OPT_OS_NONE
diff --git a/hw/bsp/feather_stm32f405/stm32f4xx_hal_conf.h b/hw/bsp/feather_stm32f405/stm32f4xx_hal_conf.h
index dbef20e0a..b892df3b6 100644
--- a/hw/bsp/feather_stm32f405/stm32f4xx_hal_conf.h
+++ b/hw/bsp/feather_stm32f405/stm32f4xx_hal_conf.h
@@ -75,7 +75,7 @@
 /* #define HAL_MMC_MODULE_ENABLED   */
 /* #define HAL_SPI_MODULE_ENABLED   */
 /* #define HAL_TIM_MODULE_ENABLED   */
-/* #define HAL_UART_MODULE_ENABLED   */
+#define HAL_UART_MODULE_ENABLED
 /* #define HAL_USART_MODULE_ENABLED   */
 /* #define HAL_IRDA_MODULE_ENABLED   */
 /* #define HAL_SMARTCARD_MODULE_ENABLED   */
@@ -199,6 +199,8 @@
 #define  USE_HAL_SPI_REGISTER_CALLBACKS     0U /* SPI register callback disabled     */
 #define  USE_HAL_SWPMI_REGISTER_CALLBACKS   0U /* SWPMI register callback disabled   */
 #define  USE_HAL_TIM_REGISTER_CALLBACKS     0U /* TIM register callback disabled     */
+#define  USE_HAL_UART_REGISTER_CALLBACKS    0U /* UART register callback disabled      */
+#define  USE_HAL_USART_REGISTER_CALLBACKS   0U /* USART register callback disabled     */
 #define  USE_HAL_WWDG_REGISTER_CALLBACKS    0U /* WWDG register callback disabled    */
 
 /* ########################## Assert Selection ############################## */
diff --git a/hw/bsp/nrf52840_mdk_dongle/board.mk b/hw/bsp/nrf52840_mdk_dongle/board.mk
new file mode 100644
index 000000000..df834f963
--- /dev/null
+++ b/hw/bsp/nrf52840_mdk_dongle/board.mk
@@ -0,0 +1,61 @@
+CFLAGS += \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -DNRF52840_XXAA \
+  -DCFG_TUSB_MCU=OPT_MCU_NRF5X
+
+# 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)/$(BOARD).ld
+
+LDFLAGS += -L$(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 \
+	$(TOP)/hw/mcu/nordic/nrfx/drivers/src \
+
+SRC_S += hw/mcu/nordic/nrfx/mdk/gcc_startup_nrf52840.S
+
+ASFLAGS += -D__HEAP_SIZE=0
+
+# For TinyUSB port source
+VENDOR = nordic
+CHIP_FAMILY = nrf5x
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM4F
+
+# For flash-jlink target
+JLINK_DEVICE = nRF52840_xxAA
+JLINK_IF = swd
+
+# flash using Nordic nrfutil (pip2 install nrfutil)
+# 	make BOARD=nrf52840_mdk_dongle SERIAL=/dev/ttyACM0 all flash
+NRFUTIL = nrfutil
+
+$(BUILD)/$(BOARD)-firmware.zip: $(BUILD)/$(BOARD)-firmware.hex
+	$(NRFUTIL) pkg generate --hw-version 52 --sd-req 0x0000 --debug-mode --application $^ $@
+
+flash: $(BUILD)/$(BOARD)-firmware.zip
+	@:$(call check_defined, SERIAL, example: SERIAL=/dev/ttyACM0)
+	$(NRFUTIL) dfu usb-serial --package $^ -p $(SERIAL) -b 115200
diff --git a/hw/bsp/nrf52840_mdk_dongle/nrf52840_mdk_dongle.c b/hw/bsp/nrf52840_mdk_dongle/nrf52840_mdk_dongle.c
new file mode 100644
index 000000000..86f02d3e7
--- /dev/null
+++ b/hw/bsp/nrf52840_mdk_dongle/nrf52840_mdk_dongle.c
@@ -0,0 +1,190 @@
+/* 
+ * 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 LED_PIN               23
+#define LED_STATE_ON          0
+
+// Button 1
+#define BUTTON_PIN            18
+#define BUTTON_STATE_ACTIVE   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)
+{
+  // 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)
+{
+  return BUTTON_STATE_ACTIVE == nrf_gpio_pin_read(BUTTON_PIN);
+}
+
+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
diff --git a/hw/bsp/nrf52840_mdk_dongle/nrf52840_mdk_dongle.ld b/hw/bsp/nrf52840_mdk_dongle/nrf52840_mdk_dongle.ld
new file mode 100644
index 000000000..78eddc9c3
--- /dev/null
+++ b/hw/bsp/nrf52840_mdk_dongle/nrf52840_mdk_dongle.ld
@@ -0,0 +1,13 @@
+/* Linker script to configure memory regions. */
+
+SEARCH_DIR(.)
+GROUP(-lgcc -lc -lnosys)
+
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x1000, LENGTH = 0xE0000-0x1000
+  RAM (rwx) :  ORIGIN = 0x20000008, LENGTH = 0x3fff8
+}
+
+
+INCLUDE "nrf_common.ld"
diff --git a/hw/bsp/pca10056/pca10056.c b/hw/bsp/pca10056/pca10056.c
index 31fd5e9be..b9cc9fc36 100644
--- a/hw/bsp/pca10056/pca10056.c
+++ b/hw/bsp/pca10056/pca10056.c
@@ -84,10 +84,12 @@ void board_init(void)
     .pselcts   = NRF_UARTE_PSEL_DISCONNECTED,
     .pselrts   = NRF_UARTE_PSEL_DISCONNECTED,
     .p_context = NULL,
-    .hwfc      = NRF_UARTE_HWFC_DISABLED,
-    .parity    = NRF_UARTE_PARITY_EXCLUDED,
     .baudrate  = NRF_UARTE_BAUDRATE_115200, // CFG_BOARD_UART_BAUDRATE
-    .interrupt_priority = 7
+    .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);
diff --git a/hw/bsp/pca10100/board.mk b/hw/bsp/pca10100/board.mk
new file mode 100644
index 000000000..97d9aa428
--- /dev/null
+++ b/hw/bsp/pca10100/board.mk
@@ -0,0 +1,55 @@
+CFLAGS += \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -DNRF52833_XXAA \
+  -DCONFIG_GPIO_AS_PINRESET \
+  -DCFG_TUSB_MCU=OPT_MCU_NRF5X
+
+# 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 $(GCCVERSION) \>= 8), 1)
+CFLAGS += -Wno-error=cast-function-type
+endif
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/mcu/nordic/nrfx/mdk/nrf52833_xxaa.ld
+
+LDFLAGS += -L$(TOP)/hw/mcu/nordic/nrfx/mdk
+
+SRC_C += \
+	hw/mcu/nordic/nrfx/drivers/src/nrfx_power.c \
+	hw/mcu/nordic/nrfx/drivers/src/nrfx_uarte.c \
+	hw/mcu/nordic/nrfx/mdk/system_nrf52833.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_nrf52833.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 = nRF52833_XXAA
+JLINK_IF = swd
+
+# flash using jlink
+flash: flash-jlink
diff --git a/hw/bsp/pca10100/pca10100.c b/hw/bsp/pca10100/pca10100.c
new file mode 100644
index 000000000..b9cc9fc36
--- /dev/null
+++ b/hw/bsp/pca10100/pca10100.c
@@ -0,0 +1,223 @@
+/* 
+ * 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"
+#include "nrfx/drivers/include/nrfx_uarte.h"
+
+#ifdef SOFTDEVICE_PRESENT
+#include "nrf_sdm.h"
+#include "nrf_soc.h"
+#endif
+
+/*------------------------------------------------------------------*/
+/* MACRO TYPEDEF CONSTANT ENUM
+ *------------------------------------------------------------------*/
+#define LED_PIN               13
+#define LED_STATE_ON          0
+
+#define BUTTON_PIN            11
+#define BUTTON_STATE_ACTIVE   0
+
+#define UART_RX_PIN           8
+#define UART_TX_PIN           6
+
+static nrfx_uarte_t _uart_id = NRFX_UARTE_INSTANCE(0);
+//static void uart_handler(nrfx_uart_event_t const * p_event, void* p_context);
+
+// 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;
+
+  // Use Internal OSC to compatible with all boards
+  NRF_CLOCK->LFCLKSRC = CLOCK_LFCLKSRC_SRC_RC;
+  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
+
+  // 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;
+
+#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
+    // cause cast-function-type warning
+    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)
+{
+  return BUTTON_STATE_ACTIVE == nrf_gpio_pin_read(BUTTON_PIN);
+}
+
+//static void uart_handler(nrfx_uart_event_t const * p_event, void* p_context)
+//{
+//
+//}
+
+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)
+{
+  return (NRFX_SUCCESS == nrfx_uarte_tx(&_uart_id, (uint8_t const*) buf, (size_t) len)) ? len : 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
diff --git a/hw/bsp/stm32f072disco/stm32f072disco.c b/hw/bsp/stm32f072disco/stm32f072disco.c
index aac1c5534..e26c5628a 100644
--- a/hw/bsp/stm32f072disco/stm32f072disco.c
+++ b/hw/bsp/stm32f072disco/stm32f072disco.c
@@ -43,9 +43,9 @@
 #define UART_TX_PIN           GPIO_PIN_9
 #define UART_RX_PIN           GPIO_PIN_10
 
-
 UART_HandleTypeDef UartHandle;
 
+
 // enable all LED, Button, Uart, USB clock
 static void all_rcc_clk_enable(void)
 {
diff --git a/hw/mcu/nordic/nrfx b/hw/mcu/nordic/nrfx
-Subproject 9d68726e41c321f1772c187bd12d82f5b13104f
+Subproject 7a4c9d946cf1801771fc180acdbf7b878f27009
diff --git a/hw/mcu/nordic/nrfx_config.h b/hw/mcu/nordic/nrfx_config.h
index 8f9aeffe5..6a974ba70 100644
--- a/hw/mcu/nordic/nrfx_config.h
+++ b/hw/mcu/nordic/nrfx_config.h
@@ -1,10 +1,18 @@
 #ifndef NRFX_CONFIG_H__
 #define NRFX_CONFIG_H__
 
-#define NRFX_POWER_ENABLED              1
-#define NRFX_POWER_CONFIG_IRQ_PRIORITY  7
+#define NRFX_POWER_ENABLED   1
+#define NRFX_POWER_DEFAULT_CONFIG_IRQ_PRIORITY  7
+
+#define NRFX_CLOCK_ENABLED   0
 
 #define NRFX_UARTE_ENABLED   1
 #define NRFX_UARTE0_ENABLED  1
 
+#define NRFX_UARTE1_ENABLED  0
+#define NRFX_UARTE2_ENABLED  0
+#define NRFX_UARTE3_ENABLED  0
+
+#define NRFX_PRS_ENABLED     0
+
 #endif // NRFX_CONFIG_H__
diff --git a/src/portable/nordic/nrf5x/dcd_nrf5x.c b/src/portable/nordic/nrf5x/dcd_nrf5x.c
index 17140ee75..59c2f36aa 100644
--- a/src/portable/nordic/nrf5x/dcd_nrf5x.c
+++ b/src/portable/nordic/nrf5x/dcd_nrf5x.c
@@ -31,7 +31,6 @@
 #include "nrf.h"
 #include "nrf_clock.h"
 #include "nrf_power.h"
-#include "nrf_usbd.h"
 #include "nrfx_usbd_errata.h"
 
 #ifdef SOFTDEVICE_PRESENT
@@ -498,7 +497,8 @@ void USBD_IRQHandler(void)
   if ( int_status & (USBD_INTEN_EPDATA_Msk | USBD_INTEN_EP0DATADONE_Msk) )
   {
     uint32_t data_status = NRF_USBD->EPDATASTATUS;
-    nrf_usbd_epdatastatus_clear(data_status);
+    NRF_USBD->EPDATASTATUS = data_status;
+    __ISB(); __DSB();
 
     // EP0DATADONE is set with either Control Out on IN Data
     // Since EPDATASTATUS cannot be used to determine whether it is control OUT or IN.
@@ -572,7 +572,7 @@ static bool hfclk_running(void)
   }
 #endif
 
-  return nrf_clock_hf_is_running(NRF_CLOCK_HFCLK_HIGH_ACCURACY);
+  return nrf_clock_hf_is_running(NRF_CLOCK, NRF_CLOCK_HFCLK_HIGH_ACCURACY);
 }
 
 static void hfclk_enable(void)
@@ -588,8 +588,8 @@ static void hfclk_enable(void)
   }
 #endif
 
-  nrf_clock_event_clear(NRF_CLOCK_EVENT_HFCLKSTARTED);
-  nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTART);
+  nrf_clock_event_clear(NRF_CLOCK, NRF_CLOCK_EVENT_HFCLKSTARTED);
+  nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_HFCLKSTART);
 }
 
 static void hfclk_disable(void)
@@ -602,7 +602,7 @@ static void hfclk_disable(void)
   }
 #endif
 
-  nrf_clock_task_trigger(NRF_CLOCK_TASK_HFCLKSTOP);
+  nrf_clock_task_trigger(NRF_CLOCK, NRF_CLOCK_TASK_HFCLKSTOP);
 }
 
 // Power & Clock Peripheral on nRF5x to manage USB
@@ -630,7 +630,8 @@ void tusb_hal_nrf_power_event (uint32_t event)
       if ( !NRF_USBD->ENABLE )
       {
         /* Prepare for READY event receiving */
-        nrf_usbd_eventcause_clear(NRF_USBD_EVENTCAUSE_READY_MASK);
+        NRF_USBD->EVENTCAUSE = USBD_EVENTCAUSE_READY_Msk;
+        __ISB(); __DSB(); // for sync
 
         /* Enable the peripheral */
         // ERRATA 171, 187, 166
@@ -667,7 +668,8 @@ void tusb_hal_nrf_power_event (uint32_t event)
           // CRITICAL_REGION_EXIT();
         }
 
-        nrf_usbd_enable();
+        NRF_USBD->ENABLE = 1;
+        __ISB(); __DSB(); // for sync
 
         // Enable HFCLK
         hfclk_enable();
@@ -678,8 +680,8 @@ void tusb_hal_nrf_power_event (uint32_t event)
       /* Waiting for USBD peripheral enabled */
       while ( !(USBD_EVENTCAUSE_READY_Msk & NRF_USBD->EVENTCAUSE) ) { }
 
-      nrf_usbd_eventcause_clear(USBD_EVENTCAUSE_READY_Msk);
-      nrf_usbd_event_clear(USBD_EVENTCAUSE_READY_Msk);
+      NRF_USBD->EVENTCAUSE = USBD_EVENTCAUSE_READY_Msk;
+      __ISB(); __DSB(); // for sync
 
       if ( nrfx_usbd_errata_171() )
       {
@@ -719,11 +721,11 @@ void tusb_hal_nrf_power_event (uint32_t event)
         *((volatile uint32_t *) (NRF_USBD_BASE + 0x800)) = 0x7E3;
         *((volatile uint32_t *) (NRF_USBD_BASE + 0x804)) = 0x40;
 
-        __ISB();
-        __DSB();
+        __ISB(); __DSB();
       }
 
-      nrf_usbd_isosplit_set(USBD_ISOSPLIT_SPLIT_HalfIN);
+      // ISO buffer Lower half for IN, upper half for OUT
+      NRF_USBD->ISOSPLIT = USBD_ISOSPLIT_SPLIT_HalfIN;
 
       // Enable interrupt
       NRF_USBD->INTENSET = USBD_INTEN_USBRESET_Msk | USBD_INTEN_EPDATA_Msk |
@@ -737,7 +739,8 @@ void tusb_hal_nrf_power_event (uint32_t event)
       while ( !hfclk_running() ) { }
 
       // Enable pull up
-      nrf_usbd_pullup_enable();
+      NRF_USBD->USBPULLUP = 1;
+      __ISB(); __DSB(); // for sync
     break;
 
     case USB_EVT_REMOVED:
@@ -746,7 +749,8 @@ void tusb_hal_nrf_power_event (uint32_t event)
         // Abort all transfers
 
         // Disable pull up
-        nrf_usbd_pullup_disable();
+        NRF_USBD->USBPULLUP = 0;
+        __ISB(); __DSB(); // for sync
 
         // Disable Interrupt
         NVIC_DisableIRQ(USBD_IRQn);
@@ -754,7 +758,9 @@ void tusb_hal_nrf_power_event (uint32_t event)
         // disable all interrupt
         NRF_USBD->INTENCLR = NRF_USBD->INTEN;
 
-        nrf_usbd_disable();
+        NRF_USBD->ENABLE = 0;
+        __ISB(); __DSB(); // for sync
+
         hfclk_disable();
 
         dcd_event_bus_signal(0, DCD_EVENT_UNPLUGGED, true);