【记录】STM32串口测试

最新推荐文章于 2025-10-29 15:56:25 发布

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最新推荐文章于 2025-10-29 15:56:25 发布 · 2.1k 阅读

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CC 4.0 BY-SA版权

测试环境

正点原子战舰STM32F767

STM32串口

中断收发

为了验证硬件的正确性，最简单的方法是接收串口工具的数据，然后将接收到的数据发送

在这里插入图片描述

STM32串口-接收定长数据



uint8_t g_u8SndBuf[UART_LEN] = "USART1 Send test\n\r";
uint8_t g_u8RcvBuf[UART_LEN] = {0};

void MX_USART1_UART_Init(void)
{

  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  
  //for test
  HAL_UART_Transmit_IT(&huart1, g_u8SndBuf, sizeof(g_u8SndBuf));
  HAL_UART_Receive_IT(&huart1, g_u8RcvBuf, 10); //to receive fixed lenght of data
}


void USART1_IRQHandler(void)
{
  HAL_UART_IRQHandler(&huart1);
}

void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	if(huart->Instance==USART1)
	{
		HAL_UART_Transmit_IT(&huart1, g_u8RcvBuf, sizeof(g_u8RcvBuf));
		HAL_UART_Receive_IT(&huart1, g_u8RcvBuf, 10);  //enable receive interrupt again
	}
}

在这里插入图片描述

STM32串口-接收不定长数据

1. 定时接收

…

2. 固定结束符

当接收到固定字符（如：0x0D），认为接收完成



#define UART_LEN	128

UART_HandleTypeDef huart1;

uint8_t *s_pbSnd = NULL;
uint8_t *s_pbRcv = NULL;
uint16_t s_wSndCnt = 0;
uint16_t s_wSndIndex = 0;
uint16_t s_wRcvIndex = 0;
uint8_t s_bRcvDone = 0;

void MX_USART1_UART_Init(void)
{

  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart1) != HA

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