/*串口参数配置*/
USART_InitStructure.USART_BaudRate = 115200; /*设置波特率为115200*/
USART_InitStructure.USART_WordLength = USART_WordLength_8b; /*设置数据位为8位*/
USART_InitStructure.USART_StopBits = USART_StopBits_1; /*设置停止位为1位*/
USART_InitStructure.USART_Parity = USART_Parity_No; /*无奇偶校验*/
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; /*没有硬件流控*/
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; /*发送与接收*/
/*完成串口COM1的时钟配置、GPIO配置，根据上述参数初始化并使能*/
STM_EVAL_COMInit(COM1, &USART_InitStructure);
完成上述配置之后，单片机就会有串口打印了
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