217 lines
6.1 KiB
C
217 lines
6.1 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (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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#include "bsp/board.h"
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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_uarte.h"
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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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/* MACRO TYPEDEF CONSTANT ENUM
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*------------------------------------------------------------------*/
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#define _PINNUM(port, pin) ((port)*32 + (pin))
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#define LED_PIN _PINNUM(0, 24)
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#define LED_STATE_ON 0
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#define BUTTON_PIN _PINNUM(1, 11) // D2
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#define UART_RX_PIN _PINNUM(1, 10)
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#define UART_TX_PIN _PINNUM(1, 3)
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static nrfx_uarte_t _uart_id = NRFX_UARTE_INSTANCE(0);
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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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void board_init(void)
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{
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// stop LF clock just in case we jump from application without reset
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NRF_CLOCK->TASKS_LFCLKSTOP = 1UL;
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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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// LED
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nrf_gpio_cfg_output(LED_PIN);
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board_led_write(false);
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// Button
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nrf_gpio_cfg_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP);
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// 1ms tick timer
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SysTick_Config(SystemCoreClock/1000);
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// UART
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nrfx_uarte_config_t uart_cfg =
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{
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.pseltxd = UART_TX_PIN,
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.pselrxd = UART_RX_PIN,
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.pselcts = NRF_UARTE_PSEL_DISCONNECTED,
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.pselrts = NRF_UARTE_PSEL_DISCONNECTED,
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.p_context = NULL,
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.baudrate = NRF_UARTE_BAUDRATE_115200, // CFG_BOARD_UART_BAUDRATE
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.interrupt_priority = 7,
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.hal_cfg = {
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.hwfc = NRF_UARTE_HWFC_DISABLED,
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.parity = NRF_UARTE_PARITY_EXCLUDED,
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}
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};
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nrfx_uarte_init(&_uart_id, &uart_cfg, NULL); //uart_handler);
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#if TUSB_OPT_DEVICE_ENABLED
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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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// 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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#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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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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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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// 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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nrfx_power_usbevt_enable();
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usb_reg = NRF_POWER->USBREGSTATUS;
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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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#endif
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}
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//--------------------------------------------------------------------+
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// Board porting API
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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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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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int board_uart_read(uint8_t* buf, int len)
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{
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(void) buf; (void) len;
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return 0;
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// return NRFX_SUCCESS == nrfx_uart_rx(&_uart_id, buf, (size_t) len) ? len : 0;
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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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return (NRFX_SUCCESS == nrfx_uarte_tx(&_uart_id, (uint8_t const*) buf, (size_t) len)) ? len : 0;
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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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void SysTick_Handler (void)
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{
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system_ticks++;
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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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#endif
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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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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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if ( usbevt >= 0) tusb_hal_nrf_power_event(usbevt);
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}
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return err;
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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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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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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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