432 lines
12 KiB
C
432 lines
12 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2025 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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UART_HandleTypeDef huart1;
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UART_HandleTypeDef huart2;
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/* USER CODE BEGIN PV */
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static uint8_t rx_buf[64];
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static bool rx_complete = false;
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static volatile uint16_t rx_length = 0;
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void MX_GPIO_Init(void);
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static void MX_USART1_UART_Init(void);
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static void MX_USART2_UART_Init(void);
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/* USER CODE BEGIN PFP */
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static void hex_dump(const uint8_t *data, uint16_t len);
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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static char heartbeat_buf[64];
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/**
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* @brief Print hex dump in ESP-IDF style
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* @param data: pointer to data buffer
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* @param len: length of data
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* @retval None
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*/
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static void hex_dump(const uint8_t *data, uint16_t len)
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{
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char line_buf[80];
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for (uint16_t i = 0; i < len; i += 16) {
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// Print address
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int pos = snprintf(line_buf, sizeof(line_buf), "0x%08lx ", (unsigned long)(data + i));
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// Print hex values (first 8 bytes)
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for (int j = 0; j < 8; j++) {
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if (i + j < len) {
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pos += snprintf(line_buf + pos, sizeof(line_buf) - pos, "%02x ", data[i + j]);
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} else {
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pos += snprintf(line_buf + pos, sizeof(line_buf) - pos, " ");
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}
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}
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// Space between two groups
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pos += snprintf(line_buf + pos, sizeof(line_buf) - pos, " ");
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// Print hex values (second 8 bytes)
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for (int j = 8; j < 16; j++) {
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if (i + j < len) {
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pos += snprintf(line_buf + pos, sizeof(line_buf) - pos, "%02x ", data[i + j]);
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} else {
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pos += snprintf(line_buf + pos, sizeof(line_buf) - pos, " ");
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}
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}
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// Print ASCII representation
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pos += snprintf(line_buf + pos, sizeof(line_buf) - pos, " |");
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for (int j = 0; j < 16; j++) {
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if (i + j < len) {
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uint8_t c = data[i + j];
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if (c >= 32 && c <= 126) {
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line_buf[pos++] = c;
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} else {
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line_buf[pos++] = '.';
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}
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} else {
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// Pad with space if beyond data length
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line_buf[pos++] = ' ';
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}
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}
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line_buf[pos++] = '|';
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line_buf[pos++] = '\r';
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line_buf[pos++] = '\n';
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// Send line to UART1
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HAL_UART_Transmit(&huart1, (uint8_t *)line_buf, (uint16_t)pos, HAL_MAX_DELAY);
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}
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}
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_USART1_UART_Init();
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MX_USART2_UART_Init();
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/* USER CODE BEGIN 2 */
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/* Enable UART IDLE interrupt */
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__HAL_UART_ENABLE_IT(&huart2, UART_IT_IDLE);
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/* Start UART2 reception in interrupt mode */
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HAL_UART_Receive_IT(&huart2, rx_buf, sizeof(rx_buf));
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while (1) {
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/* Check if data received from UART2 */
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if (rx_complete) {
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rx_complete = false;
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uint16_t len = rx_length;
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/* Print header */
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char header[32];
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int header_len = snprintf(header, sizeof(header), "RX[%u]:\r\n", len);
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HAL_UART_Transmit(&huart1, (uint8_t *)header, (uint16_t)header_len, HAL_MAX_DELAY);
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/* Print received buffer as hex dump */
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hex_dump(rx_buf, len);
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/* Clear buffer before re-arming */
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memset(rx_buf, 0, sizeof(rx_buf));
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/* Re-arm UART2 reception */
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HAL_UART_Receive_IT(&huart2, rx_buf, sizeof(rx_buf));
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}
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static uint32_t last_toggle_timestamp;
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if (HAL_GetTick() - last_toggle_timestamp >= 1000) {
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HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
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/* Heartbeat: emit tick timestamp over UART1 and blink the PB6 LED */
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int msg_len = snprintf(heartbeat_buf, sizeof(heartbeat_buf),
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"%lu PB6 heartbeat\r\n", (unsigned long)HAL_GetTick());
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if (msg_len > 0) {
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if (msg_len >= (int)sizeof(heartbeat_buf)) {
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msg_len = (int)sizeof(heartbeat_buf) - 1;
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}
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HAL_UART_Transmit(&huart1, (uint8_t *)heartbeat_buf, (uint16_t)msg_len,
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HAL_MAX_DELAY);
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}
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last_toggle_timestamp = HAL_GetTick();
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}
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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}
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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/** Configure the main internal regulator output voltage
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*/
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__HAL_RCC_PWR_CLK_ENABLE();
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
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/** Initializes the RCC Oscillators according to the specified parameters
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* in the RCC_OscInitTypeDef structure.
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 8;
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RCC_OscInitStruct.PLL.PLLN = 192;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
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RCC_OscInitStruct.PLL.PLLQ = 4;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
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{
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Error_Handler();
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}
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HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_PLLCLK, RCC_MCODIV_2);
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}
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/**
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* @brief USART1 Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_USART1_UART_Init(void)
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{
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/* USER CODE BEGIN USART1_Init 0 */
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/* USER CODE END USART1_Init 0 */
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/* USER CODE BEGIN USART1_Init 1 */
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/* USER CODE END USART1_Init 1 */
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huart1.Instance = USART1;
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huart1.Init.BaudRate = 115200;
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huart1.Init.WordLength = UART_WORDLENGTH_8B;
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huart1.Init.StopBits = UART_STOPBITS_1;
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huart1.Init.Parity = UART_PARITY_NONE;
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huart1.Init.Mode = UART_MODE_TX_RX;
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huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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huart1.Init.OverSampling = UART_OVERSAMPLING_16;
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if (HAL_UART_Init(&huart1) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN USART1_Init 2 */
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/* USER CODE END USART1_Init 2 */
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}
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/**
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* @brief USART2 Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_USART2_UART_Init(void)
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{
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/* USER CODE BEGIN USART2_Init 0 */
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/* USER CODE END USART2_Init 0 */
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/* USER CODE BEGIN USART2_Init 1 */
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/* USER CODE END USART2_Init 1 */
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huart2.Instance = USART2;
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huart2.Init.BaudRate = 14400;
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huart2.Init.WordLength = UART_WORDLENGTH_8B;
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huart2.Init.StopBits = UART_STOPBITS_1;
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huart2.Init.Parity = UART_PARITY_NONE;
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huart2.Init.Mode = UART_MODE_TX_RX;
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huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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huart2.Init.OverSampling = UART_OVERSAMPLING_8;
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if (HAL_UART_Init(&huart2) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN USART2_Init 2 */
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/* USER CODE END USART2_Init 2 */
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}
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/**
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* @brief GPIO Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_GPIO_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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/* USER CODE BEGIN MX_GPIO_Init_1 */
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/* USER CODE END MX_GPIO_Init_1 */
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOH_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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/*Configure GPIO pin Output Level */
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HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
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/*Configure GPIO pin : PA8 */
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GPIO_InitStruct.Pin = GPIO_PIN_8;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.Alternate = GPIO_AF0_MCO;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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/*Configure GPIO pin : PB6 */
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GPIO_InitStruct.Pin = GPIO_PIN_6;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* USER CODE BEGIN MX_GPIO_Init_2 */
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/* USER CODE END MX_GPIO_Init_2 */
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}
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/* USER CODE BEGIN 4 */
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/**
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* @brief UART IDLE line detected callback
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* @note This is called from USART2_IRQHandler when IDLE interrupt occurs
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* @retval None
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*/
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void UART_IDLE_Callback(UART_HandleTypeDef *huart)
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{
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if (huart->Instance == USART2) {
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if (huart->RxState != HAL_UART_STATE_BUSY_RX) {
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/* Not in reception state, ignore */
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return;
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}
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/* Calculate how many bytes were actually received */
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/**
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* RxXferCount is a countdown timer maintained by the HAL library that
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* decrements with each byte received. Subtracting it from the total
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* gives you the actual number of bytes that made it into the buffer.
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*/
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rx_length = sizeof(rx_buf) - huart->RxXferCount;
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/* Only process if we actually received data */
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if (rx_length > 0) {
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/* Abort the ongoing reception */
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HAL_UART_AbortReceive_IT(&huart2);
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/* Signal that data is ready */
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rx_complete = true;
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}
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}
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}
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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__disable_irq();
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while (1) {
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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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
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number, ex: printf("Wrong parameters value: file %s on line %d\r\n", file,
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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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