stm32串口通信的程序 我这个程度一直无法实现通信啊 第一

原因有很多种可能

USART_InitTypeDef USART_InitStructure;
USART_InitStructure.USART_BaudRate = baudrate;//
USART_InitStructure.USART_WordLength = USART_WordLength_8b;//
USART_InitStructure.USART_StopBits = USART_StopBits_1;//
USART_InitStructure.USART_Parity = USART_Parity_No;//
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//
USART_Init(USARTx, &USART_InitStructure); //
USART_ITConfig(USARTx, USART_IT_RXNE, ENABLE);//
//USART_ITConfig ( USARTx, USART_IT_IDLE, ENABLE ); //
while (USART_GetFlagStatus(USARTx, USART_FLAG_TXE) == RESET);
USART_Cmd(USARTx, ENABLE); //配置完再使能串口

楼主能发我一份程序嘛，感激不尽