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+/*
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+ * The MIT License (MIT)
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+ *
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+ * Copyright (c) 2018, hathach (tinyusb.org)
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a copy
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+ * of this software and associated documentation files (the "Software"), to deal
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+ * in the Software without restriction, including without limitation the rights
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+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+ * copies of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+ * THE SOFTWARE.
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+ *
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+ * This file is part of the TinyUSB stack.
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+ */
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+
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+#include "bsp/board.h"
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+
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+#include "nrfx.h"
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+#include "nrfx/hal/nrf_gpio.h"
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+#include "nrfx/drivers/include/nrfx_power.h"
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+#include "nrfx/drivers/include/nrfx_qspi.h"
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+
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+#ifdef SOFTDEVICE_PRESENT
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+#include "nrf_sdm.h"
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+#include "nrf_soc.h"
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+#endif
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+
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+/*------------------------------------------------------------------*/
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+/* MACRO TYPEDEF CONSTANT ENUM
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+ *------------------------------------------------------------------*/
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+#define _PINNUM(port, pin) ((port)*32 + (pin))
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+
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+#define LED_PIN _PINNUM(1, 15)
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+#define LED_STATE_ON 1
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+
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+#define BUTTON_PIN _PINNUM(1, 02)
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+
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+/*------------------------------------------------------------------*/
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+/* TUSB HAL MILLISECOND
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+ *------------------------------------------------------------------*/
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+#if CFG_TUSB_OS == OPT_OS_NONE
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+volatile uint32_t system_ticks = 0;
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+
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+void SysTick_Handler (void)
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+{
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+ system_ticks++;
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+}
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+
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+uint32_t board_millis(void)
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+{
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+ return system_ticks;
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+}
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+
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+#endif
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+
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+/*------------------------------------------------------------------*/
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+/* BOARD API
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+ *------------------------------------------------------------------*/
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+
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+// tinyusb function that handles power event (detected, ready, removed)
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+// We must call it within SD's SOC event handler, or set it as power event handler if SD is not enabled.
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+extern void tusb_hal_nrf_power_event(uint32_t event);
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+
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+void board_init(void)
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+{
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+ // Config clock source: XTAL or RC in sdk_config.h
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+ NRF_CLOCK->LFCLKSRC = (uint32_t)((CLOCK_LFCLKSRC_SRC_Xtal << CLOCK_LFCLKSRC_SRC_Pos) & CLOCK_LFCLKSRC_SRC_Msk);
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+ NRF_CLOCK->TASKS_LFCLKSTART = 1UL;
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+
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+ // LED
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+ nrf_gpio_cfg_output(LED_PIN);
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+ board_led_write(false);
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+
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+ // Button
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+ nrf_gpio_cfg_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP);
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+
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+#if CFG_TUSB_OS == OPT_OS_NONE
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+ // 1ms tick timer
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+ SysTick_Config(SystemCoreClock/1000);
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+#endif
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+
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+ // Priorities 0, 1, 4 (nRF52) are reserved for SoftDevice
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+ // 2 is highest for application
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+ NVIC_SetPriority(USBD_IRQn, 2);
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+
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+ // USB power may already be ready at this time -> no event generated
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+ // We need to invoke the handler based on the status initially
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+ uint32_t usb_reg;
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+
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+#ifdef SOFTDEVICE_PRESENT
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+ uint8_t sd_en = false;
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+ sd_softdevice_is_enabled(&sd_en);
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+
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+ if ( sd_en ) {
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+ sd_power_usbdetected_enable(true);
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+ sd_power_usbpwrrdy_enable(true);
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+ sd_power_usbremoved_enable(true);
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+
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+ sd_power_usbregstatus_get(&usb_reg);
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+ }else
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+#endif
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+ {
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+ // Power module init
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+ const nrfx_power_config_t pwr_cfg = { 0 };
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+ nrfx_power_init(&pwr_cfg);
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+
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+ // Register tusb function as USB power handler
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+ const nrfx_power_usbevt_config_t config = { .handler = (nrfx_power_usb_event_handler_t) tusb_hal_nrf_power_event };
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+ nrfx_power_usbevt_init(&config);
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+
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+ nrfx_power_usbevt_enable();
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+
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+ usb_reg = NRF_POWER->USBREGSTATUS;
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+ }
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+
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+ if ( usb_reg & POWER_USBREGSTATUS_VBUSDETECT_Msk ) tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_DETECTED);
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+ if ( usb_reg & POWER_USBREGSTATUS_OUTPUTRDY_Msk ) tusb_hal_nrf_power_event(NRFX_POWER_USB_EVT_READY);
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+}
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+
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+void board_led_write(bool state)
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+{
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+ nrf_gpio_pin_write(LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
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+}
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+
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+uint32_t board_button_read(void)
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+{
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+ // button is active LOW
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+ return (nrf_gpio_pin_read(BUTTON_PIN) ? 0 : 1);
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+}
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+
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+int board_uart_read(uint8_t* buf, int len)
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+{
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+ (void) buf;
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+ (void) len;
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+ return 0;
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+}
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+
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+int board_uart_write(void const * buf, int len)
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+{
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+ (void) buf;
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+ (void) len;
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+ return 0;
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+}
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+
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+#ifdef SOFTDEVICE_PRESENT
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+// process SOC event from SD
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+uint32_t proc_soc(void)
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+{
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+ uint32_t soc_evt;
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+ uint32_t err = sd_evt_get(&soc_evt);
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+
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+ if (NRF_SUCCESS == err)
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+ {
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+ /*------------- usb power event handler -------------*/
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+ int32_t usbevt = (soc_evt == NRF_EVT_POWER_USB_DETECTED ) ? NRFX_POWER_USB_EVT_DETECTED:
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+ (soc_evt == NRF_EVT_POWER_USB_POWER_READY) ? NRFX_POWER_USB_EVT_READY :
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+ (soc_evt == NRF_EVT_POWER_USB_REMOVED ) ? NRFX_POWER_USB_EVT_REMOVED : -1;
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+
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+ if ( usbevt >= 0) tusb_hal_nrf_power_event(usbevt);
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+ }
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+
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+ return err;
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+}
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+
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+uint32_t proc_ble(void)
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+{
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+ // do nothing with ble
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+ return NRF_ERROR_NOT_FOUND;
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+}
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+
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+void SD_EVT_IRQHandler(void)
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+{
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+ // process BLE and SOC until there is no more events
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+ while( (NRF_ERROR_NOT_FOUND != proc_ble()) || (NRF_ERROR_NOT_FOUND != proc_soc()) )
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+ {
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+
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+ }
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+}
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+
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+void nrf_error_cb(uint32_t id, uint32_t pc, uint32_t info)
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+{
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+ (void) id;
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+ (void) pc;
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+ (void) info;
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+}
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+#endif
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hathach