STM32的串口配置(中断方式)
修改NVIC_Configuration函数
/***********************************************************
* Name : NVIC_Configuration
* Deion : Configures NVIC and Vector Table base location.
* Input : None
* Output : None
* Return : None
***************************************************/
void NVIC_Configuration(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
/* Configure the NVIC Preemption Priority Bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(NVIC_InitStructure);
}
//串口中断
void USART1_IRQHandler(void)
{
//处理接收到的数据
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
/* Clear the USART1 Receive interrupt */
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
}
//发送中断
if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
{
USART_SendData(USART1, Send_Data[Send_Length++]);
if (Send_Length==SEND_LENGTH)
{
//发送字节结束
USART_ClearITPendingBit(USART1,USART_IT_TXE);
USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
USART_ITConfig(USART1, USART_IT_TC, ENABLE);
}
}
//发送完成
if (USART_GetITStatus(USART1, USART_IT_TC) != RESET)
{
USART_ClearITPendingBit(USART1,USART_IT_TC);
USART_ITConfig(USART1, USART_IT_TC, DISABLE);
}
}
在需要发送的程序里Send_Data[SEND_LENGTH]和发送长度设置好,
void Send_to_PC(void)
{
//设置好Send_Data[SEND_LENGTH]数组
//打开发送中断
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
}
至此 串口就可以工作起来了!~
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