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/*
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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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* Copyright (c) 2023 HiFiPhile
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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 "stm32_hal.h"
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#include "bsp/board_api.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 UARTn USART1
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#define UARTn_CLK_ENABLE HAL_RCC_USART1_EnableClock
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#elif UART_ID == 2
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#define UARTn USART2
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#define UARTn_CLK_ENABLE HAL_RCC_USART2_EnableClock
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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_DRD_FS_IRQHandler(void) {
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tusb_int_handler(0, true);
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}
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//--------------------------------------------------------------------+
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// MACRO TYPEDEF CONSTANT ENUM
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//--------------------------------------------------------------------+
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static void mpu_init(void);
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void board_init(void) {
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mpu_init();
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LL_ICACHE_Enable(ICACHE);
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HAL_Init();
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board_clock_init();
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// Enable peripheral clocks.
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HAL_RCC_GPIOA_EnableClock();
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HAL_RCC_GPIOB_EnableClock();
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HAL_RCC_GPIOC_EnableClock();
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HAL_RCC_GPIOD_EnableClock();
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HAL_RCC_USB_EnableClock();
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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_DRD_FS_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
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#endif
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// LED
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{
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hal_gpio_config_t gpio_config;
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gpio_config.mode = HAL_GPIO_MODE_OUTPUT;
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gpio_config.speed = HAL_GPIO_SPEED_FREQ_LOW;
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gpio_config.pull = HAL_GPIO_PULL_NO;
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gpio_config.output_type = HAL_GPIO_OUTPUT_PUSHPULL;
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gpio_config.init_state = HAL_GPIO_PIN_RESET;
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HAL_GPIO_Init(LED_PORT, LED_PIN, &gpio_config);
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}
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// Button
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{
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hal_gpio_config_t gpio_config;
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gpio_config.mode = HAL_GPIO_MODE_INPUT;
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gpio_config.speed = HAL_GPIO_SPEED_FREQ_LOW;
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gpio_config.pull = BUTTON_STATE_ACTIVE ? HAL_GPIO_PULL_DOWN : HAL_GPIO_PULL_UP;
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HAL_GPIO_Init(BUTTON_PORT, BUTTON_PIN, &gpio_config);
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}
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#ifdef UART_ID
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UARTn_CLK_ENABLE();
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// UART
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{
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hal_gpio_config_t gpio_config;
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gpio_config.mode = HAL_GPIO_MODE_ALTERNATE;
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gpio_config.output_type = HAL_GPIO_OUTPUT_PUSHPULL;
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gpio_config.pull = HAL_GPIO_PULL_NO;
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gpio_config.speed = HAL_GPIO_SPEED_FREQ_LOW;
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gpio_config.alternate = UART_GPIO_AF;
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HAL_GPIO_Init(UART_GPIO_PORT, UART_TX_PIN | UART_RX_PIN, &gpio_config);
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}
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LL_USART_ConfigAsyncMode(UARTn);
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uint32_t reg_temp = (LL_USART_DATAWIDTH_8_BIT | LL_USART_PARITY_NONE
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| LL_USART_DIRECTION_TX_RX | LL_USART_OVERSAMPLING_16);
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LL_USART_ConfigXfer(UARTn, reg_temp, LL_USART_STOP_BIT_1);
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LL_USART_SetBaudRate(UARTn, SystemCoreClock, LL_USART_PRESCALER_DIV1, LL_USART_OVERSAMPLING_16,
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115200);
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LL_USART_EnableFIFO(UARTn);
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LL_USART_Enable(UARTn);
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#endif
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}
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static void mpu_init(void)
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{
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/* Disables the MPU */
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HAL_CORTEX_MPU_Disable();
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/*
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Initializes and configures the MPU attributes
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*/
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HAL_CORTEX_MPU_SetCacheMemAttr(HAL_CORTEX_MPU_MEM_ATTR_0, HAL_CORTEX_MPU_NORMAL_MEM_NCACHEABLE);
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/*
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Initializes and configures the MPU Region
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*/
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hal_cortex_mpu_region_config_t p_region_config = {0};
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p_region_config.base_addr = 0x8FFE000;
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p_region_config.limit_addr = 0x8FFFFFF;
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p_region_config.access_attr = HAL_CORTEX_MPU_REGION_ALL_RO;
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p_region_config.exec_attr = HAL_CORTEX_MPU_EXECUTION_ATTR_DISABLE;
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p_region_config.attr_idx = HAL_CORTEX_MPU_MEM_ATTR_0;
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HAL_CORTEX_MPU_SetConfigRegion(HAL_CORTEX_MPU_REGION_0, &p_region_config);
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HAL_CORTEX_MPU_EnableRegion(HAL_CORTEX_MPU_REGION_0);
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/* Enables the MPU */
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HAL_CORTEX_MPU_Enable(HAL_CORTEX_MPU_HARDFAULT_NMI_DISABLE, HAL_CORTEX_MPU_ACCESS_FAULT_ONLY_PRIV);
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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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hal_gpio_pin_state_t pin_state = state ? HAL_GPIO_PIN_SET : HAL_GPIO_PIN_RESET;
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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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int count = 0;
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while (count < len) {
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if (LL_USART_IsActiveFlag_RXNE_RXFNE(UARTn)) {
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buf[count] = LL_USART_ReceiveData8(UARTn);
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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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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 (LL_USART_IsActiveFlag_TXE_TXFNF(UARTn)) {
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LL_USART_TransmitData8(UARTn, 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 0;
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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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system_ticks++;
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HAL_IncTick();
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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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#ifndef __ICCARM__
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// Implement _start() since we use linker flag '-nostartfiles'.
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extern int main(void);
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TU_ATTR_UNUSED void _start(void) {
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// called by startup code
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main();
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while (1) {}
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}
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#endif
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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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