我刚做了USART,贴出程序共享一下吧
void Usart_int(void)
{
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
USART_DeInit(USART1);
/* ---------------------------------------------------------------
USART Configuration:
FPCLK = 36 MHz, Baud rate =36000,MODE: RX & TX
--------------------------------------------------------------- */
USART_InitStructure.USART_BaudRate = 19200;
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(USART1, &USART_InitStructure);
/* Enable the USART Receive interrupt: this interrupt is generated when the
USART1 receive data register is not empty */
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
/* Enable USART1 */
USART_Cmd(USART1, ENABLE);
USART_ClearFlag(USART1,USART_FLAG_TXE);
}
void NVIC_init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
// Enable the USART1 gloabal Interrupt
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
_IT.C
void USART1_IRQHandler(void)
{
if(USART_GetITStatus(USART1,USART_IT_RXNE)!= RESET)
{
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
//接收数据在以下地点加代码
if(USART_ReceiveData(USART1)==0xaa)
GPIO_CPLBits(GPIOF,GPIO_Pin_6);
}
}
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