stm32 串口使用函数

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;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
}

二，配置串口中断
1.先写一个串口接收函数
typedef struct
{
bool UART2_Flag_Bit;
unsigned int RxCounter; //IDLE receive flag
uint8_t RxBuff[256]; //DMA receive buffer
}USART_2;
uint8_t UART2_TIME=0;

void USER2_UART_IRQHandler()//串口中段处理函数
{
if (__HAL_UART_GET_FLAG(&uartoline ,UART_FLAG_RXNE )!=RESET ){
__HAL_UART_ENABLE_IT(&uartoline,UART_IT