测试

`void MX_USART3_UART_Init(void)
{

/* USER CODE BEGIN USART3_Init 0 */

/* USER CODE END USART3_Init 0 */

/* USER CODE BEGIN USART3_Init 1 */

/* USER CODE END USART3_Init 1 /
huart3.Instance = USART3;
huart3.Init.BaudRate = 115200;
huart3.Init.WordLength = UART_WORDLENGTH_8B;
huart3.Init.StopBits = UART_STOPBITS_1;
huart3.Init.Parity = UART_PARITY_NONE;
huart3.Init.Mode = UART_MODE_TX_RX;
huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart3.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart3) != HAL_OK)
{
Error_Handler();
}
/ USER CODE BEGIN USART3_Init 2 */

/* USER CODE END USART3_Init 2 */

}1. `