串口是数据异常

Rampage甄姬 · 发表于 2017-12-6 16:01:13

如图串口发送的数据在内存中一直不对。
可能会怀疑是不是配置出错了。
这是初始化：
  huart2.Instance = USART2;
  huart2.Init.BaudRate = 115200;
  huart2.Init.WordLength = UART_WORDLENGTH_8B;
  huart2.Init.StopBits = UART_STOPBITS_1;
  huart2.Init.Parity = UART_PARITY_NONE;
  huart2.Init.Mode = UART_MODE_TX_RX;
  huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart2.Init.OverSampling = UART_OVERSAMPLING_16;
  huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart2) != HAL_OK)
  {
_Error_Handler(__FILE__, __LINE__);
  }
HAL_NVIC_SetPriority(USART2_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(USART2_IRQn);
  __HAL_UART_ENABLE_IT(&huart2,UART_IT_RXNE);

这是中断：
uint8_t uart2_temp = 0;

Rampage甄姬 · 发表于 2017-12-6 16:02:20

中断如下：
if((__HAL_UART_GET_FLAG(&huart2, UART_FLAG_ORE) != RESET))
{

__HAL_UART_CLEAR_OREFLAG(&huart2);
uart2_temp = (unsigned char)(huart2.Instance->RDR & 0xff);
}
if((__HAL_UART_GET_IT(&huart2, UART_IT_RXNE) != RESET) && (__HAL_UART_GET_IT_SOURCE(&huart2, UART_IT_RXNE) != RESET))
{
uart2_test[step_test++] = (unsigned char)(huart2.Instance->RDR & 0xff);
}