246 lines
7.1 KiB
C
246 lines
7.1 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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/* metadata:
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manufacturer: STMicroelectronics
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*/
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#include "stm32f0xx_hal.h"
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#include "bsp/board_api.h"
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#include "common/tusb_fifo.h"
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#include "board.h"
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#ifdef UART_ID
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#if UART_ID == 1
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#define USARTn USART1
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#define USARTn_IRQn USART1_IRQn
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#define USARTn_IRQHandler USART1_IRQHandler
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#define UARTn_CLK_ENABLE __HAL_RCC_USART1_CLK_ENABLE
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#elif UART_ID == 2
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#define USARTn USART2
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#define USARTn_IRQn USART2_IRQn
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#define USARTn_IRQHandler USART2_IRQHandler
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#define UARTn_CLK_ENABLE __HAL_RCC_USART2_CLK_ENABLE
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#endif
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#endif
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//--------------------------------------------------------------------+
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// Forward USB interrupt events to TinyUSB IRQ Handler
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//--------------------------------------------------------------------+
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void USB_IRQHandler(void) {
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tud_int_handler(0);
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}
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//--------------------------------------------------------------------+
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// MACRO TYPEDEF CONSTANT ENUM
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//--------------------------------------------------------------------+
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#ifdef UART_ID
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static UART_HandleTypeDef UartHandle = {
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.Instance = USARTn,
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.Init = {
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.BaudRate = CFG_BOARD_UART_BAUDRATE,
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.WordLength = UART_WORDLENGTH_8B,
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.StopBits = UART_STOPBITS_1,
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.Parity = UART_PARITY_NONE,
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.HwFlowCtl = UART_HWCONTROL_NONE,
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.Mode = UART_MODE_TX_RX,
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.OverSampling = UART_OVERSAMPLING_16,
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}
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};
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// RX ring buffer via RXNE interrupt
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static uint8_t uart_rx_ff_buf[32];
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static tu_fifo_t uart_rx_ff;
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// F0 uses new USART IP (ISR/RDR/TDR/ICR) — same as F7
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void USARTn_IRQHandler(void) {
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uint32_t isr = USARTn->ISR;
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if (isr & USART_ISR_RXNE) {
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uint8_t byte = (uint8_t) USARTn->RDR;
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tu_fifo_write(&uart_rx_ff, &byte);
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}
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if (isr & (USART_ISR_ORE | USART_ISR_FE | USART_ISR_NE | USART_ISR_PE)) {
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USARTn->ICR = USART_ICR_ORECF | USART_ICR_FECF | USART_ICR_NCF | USART_ICR_PECF;
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}
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}
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#endif
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void board_init(void) {
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board_stm32f0_clock_init();
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// Enable All GPIOs clocks
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOD_CLK_ENABLE();
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__HAL_RCC_GPIOF_CLK_ENABLE();
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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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#elif CFG_TUSB_OS == OPT_OS_FREERTOS
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// Explicitly disable systick to prevent its ISR from running before scheduler start
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SysTick->CTRL &= ~1U;
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// If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
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NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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#endif
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// LED
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GPIO_InitTypeDef GPIO_InitStruct;
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GPIO_InitStruct.Pin = LED_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
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// Button
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GPIO_InitStruct.Pin = BUTTON_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_PULLDOWN;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
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#ifdef UART_ID
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// Enable UART Clock
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UARTn_CLK_ENABLE();
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// Uart
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GPIO_InitStruct.Pin = UART_TX_PIN | UART_RX_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_InitStruct.Alternate = UART_GPIO_AF;
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HAL_GPIO_Init(UART_GPIO_PORT, &GPIO_InitStruct);
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HAL_UART_Init(&UartHandle);
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tu_fifo_config(&uart_rx_ff, uart_rx_ff_buf, sizeof(uart_rx_ff_buf), false);
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USARTn->CR1 |= USART_CR1_RXNEIE;
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NVIC_SetPriority(USARTn_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
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NVIC_EnableIRQ(USARTn_IRQn);
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#endif
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// USB Pins
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// Configure USB DM and DP pins. This is optional, and maintained only for user guidance.
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GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12);
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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// USB Clock enable
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__HAL_RCC_USB_CLK_ENABLE();
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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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GPIO_PinState pin_state = (GPIO_PinState) (state ? LED_STATE_ON : (1 - LED_STATE_ON));
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HAL_GPIO_WritePin(LED_PORT, LED_PIN, pin_state);
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}
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uint32_t board_button_read(void) {
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return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(BUTTON_PORT, BUTTON_PIN);
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}
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size_t board_get_unique_id(uint8_t id[], size_t max_len) {
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(void) max_len;
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volatile uint32_t * stm32_uuid = (volatile uint32_t *) UID_BASE;
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uint32_t* id32 = (uint32_t*) (uintptr_t) id;
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uint8_t const len = 12;
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id32[0] = stm32_uuid[0];
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id32[1] = stm32_uuid[1];
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id32[2] = stm32_uuid[2];
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return len;
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}
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int board_uart_read(uint8_t *buf, int len) {
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#ifdef UART_ID
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return (int) tu_fifo_read_n(&uart_rx_ff, buf, (uint16_t) len);
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#else
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(void) buf; (void) len;
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return 0;
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#endif
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}
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int board_uart_write(void const *buf, int len) {
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#ifdef UART_ID
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const uint8_t *p = (const uint8_t *) buf;
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int count = 0;
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while (count < len) {
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if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE)) {
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UartHandle.Instance->TDR = p[count];
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count++;
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} else {
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break;
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}
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}
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return count;
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#else
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(void) buf; (void) len;
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return -1;
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#endif
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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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HAL_IncTick();
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system_ticks++;
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}
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uint32_t tusb_time_millis_api(void) {
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return system_ticks;
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}
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#endif
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void HardFault_Handler(void) {
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__asm("BKPT #0\n");
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}
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#ifdef USE_FULL_ASSERT
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void assert_failed(const char* file, uint32_t line)
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{
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(void) file; (void) line;
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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// Required by __libc_init_array in startup code if we are compiling using
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// -nostdlib/-nostartfiles.
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void _init(void) {
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}
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