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楼主 |
发表于 2015-7-10 16:31:53
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void USART1_IRQHandler(void)
{
int ch;
/* USART in mode Receiver --------------------------------------------------*/
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
Comm1ReceDataF();
USART_ClearITPendingBit( USART1, USART_IT_RXNE);
}
/* USART in mode Tramitter -------------------------------------------------*/
if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
{
if(uart_prop.tx_index < uart_prop.txlen)
{
ch = uart_prop.tx_buffer[uart_prop.tx_index++];
USART_SendData( USART1, (unsigned char) ch);
}
else
{
USART_ITConfig( USART1, USART_IT_TXE, DISABLE);
}
USART_ClearITPendingBit( USART1, USART_IT_TXE);
}
}
void USART_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
/*
* USART1_TX ->  A9 , USART1_RX -> PA10
*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 9600;
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_ClockInitStructure.USART_Clock = USART_Clock_Disable;
USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
USART_ClockInit(USART1, &USART_ClockInitStructure);
USART_Init(USART1, &USART_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
// USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
单独接收是没有问题,但是主动往外发送就会触发接收中断,导致一直发送数据 |
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