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/*
* 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 "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
//--------------------------------------------------------------------+
// Forward USB interrupt events to TinyUSB IRQ Handler
//--------------------------------------------------------------------+
void USBD_IRQHandler(void)
{
tud_int_handler(0);
}
/*------------------------------------------------------------------*/
/* MACRO TYPEDEF CONSTANT ENUM
*------------------------------------------------------------------*/
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);
// nrf power callback, could be unused if SD is enabled or usb is disabled (board_test example)
TU_ATTR_UNUSED static void power_event_handler(nrfx_power_usb_evt_t event)
{
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);
// 1ms tick timer
SysTick_Config(SystemCoreClock/1000);
// 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);
//------------- USB -------------//
#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 = power_event_handler };
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;
// 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
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