crosstyan/stmf411re_test
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feat: Refactor clock configuration, update HSE startup timeout, and enhance UART heartbeat message

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crosstyan
2025-10-22 10:56:14 +08:00
parent 6d37b0ec23
commit d6b562d808
7 changed files with 69 additions and 36 deletions
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31
Core/Src/main.c
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@ -21,6 +21,7 @@
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdio.h>
/* USER CODE END Includes */
@ -58,7 +59,7 @@ static void MX_USART2_UART_Init(void);
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
static const char heartbeat_msg[] = "PB6 heartbeat\r\n";
static char heartbeat_buf[64];
/* USER CODE END 0 */
@ -101,9 +102,16 @@ int main(void)
/* USER CODE BEGIN WHILE */
while (1) {
HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_6);
/* Heartbeat: emit status over UART1 and blink the PB6 LED */
HAL_UART_Transmit(&huart1, (uint8_t *)heartbeat_msg,
sizeof(heartbeat_msg) - 1, HAL_MAX_DELAY);
/* Heartbeat: emit tick timestamp over UART1 and blink the PB6 LED */
int msg_len = snprintf(heartbeat_buf, sizeof(heartbeat_buf),
"PB6 heartbeat %lu\r\n", (unsigned long)HAL_GetTick());
if (msg_len > 0) {
if (msg_len >= (int)sizeof(heartbeat_buf)) {
msg_len = (int)sizeof(heartbeat_buf) - 1;
}
HAL_UART_Transmit(&huart1, (uint8_t *)heartbeat_buf, (uint16_t)msg_len,
HAL_MAX_DELAY);
}
HAL_Delay(1000);
/* USER CODE END WHILE */
@ -124,7 +132,7 @@ void SystemClock_Config(void)
/** Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
@ -134,7 +142,7 @@ void SystemClock_Config(void)
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 128;
RCC_OscInitStruct.PLL.PLLN = 192;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 4;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
@ -148,13 +156,14 @@ void SystemClock_Config(void)
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
{
Error_Handler();
}
HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_PLLCLK, RCC_MCODIV_2);
}
/**
@ -244,6 +253,14 @@ static void MX_GPIO_Init(void)
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_6, GPIO_PIN_SET);
/*Configure GPIO pin : PA8 */
GPIO_InitStruct.Pin = GPIO_PIN_8;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF0_MCO;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : PB6 */
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;