STM32的串口配置(中斷方式)

修改NVIC_Configuration函數

/***********************************************************

* 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);

}

//串口中斷

void USART1_IRQHandler(void)

{

//處理接收到的數據

if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)

{

/* Clear the USART1 Receive interrupt */

USART_ClearITPendingBit(USART1, USART_IT_RXNE);

}

//發(fā)送中斷

if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET)

{

USART_SendData(USART1, Send_Data[Send_Length++]);

if (Send_Length==SEND_LENGTH)

{

//發(fā)送字節(jié)結束

USART_ClearITPendingBit(USART1,USART_IT_TXE);

USART_ITConfig(USART1, USART_IT_TXE, DISABLE);

USART_ITConfig(USART1, USART_IT_TC, ENABLE);

}

}

//發(fā)送完成

if (USART_GetITStatus(USART1, USART_IT_TC) != RESET)

{

USART_ClearITPendingBit(USART1,USART_IT_TC);

USART_ITConfig(USART1, USART_IT_TC, DISABLE);

}

}

在需要發(fā)送的程序里Send_Data[SEND_LENGTH]和發(fā)送長度設置好,

void Send_to_PC(void)

{

//設置好Send_Data[SEND_LENGTH]數組

//打開發(fā)送中斷

USART_ITConfig(USART1, USART_IT_TXE, ENABLE);

}

至此 串口就可以工作起來了！~