/*******************************************************************************
* Function Name : USART1_IRQHandler
* Description : This function handles USART1 global interrupt request.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void USART1_IRQHandler(void)
{
unsigned int i;
OS_CPU_SR cpu_sr;
OS_ENTER_CRITICAL(); //保存全局中断标志,关总中断 Tell uC/OS-II that we are starting an ISR
OSIntNesting++;
OS_EXIT_CRITICAL(); //恢复全局中断曛?
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //判断读寄存器是否非空
{
RxBufferUSART[RxCounter1++] = USART_ReceiveData(USART1); //将读寄存器的数据缓存到接收缓冲区里
if(RxBufferUSART[RxCounter1-2]==0x0d&&RxBufferUSART[RxCounter1-1]==0x0a) //判断结束标志是否是0x0d 0x0a
{
for(i=0; i< RxCounter1; i++) TxBufferRF[i] = RxBufferUSART[i]; //将接收缓冲器的数据转到发送缓冲区，准备转发
usart_rec_flag=1; //接收成功标志
TxBufferRF[RxCounter1]=0; //发送缓冲区结束符
TxCounter1=RxCounter1;
RxCounter1=0;
}
}
if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET) //这段是为了避免STM32 USART 第一个字节发不出去的BUG
{
USART_ITConfig(USART1, USART_IT_TXE, DISABLE); //禁止发缓冲器空中断，
}
OSIntExit(); //在os_core.c文件里定义,如果有更高优先级的任务就绪了,则执行一次任务切换
}
/////////////////////////////
void EXTI0_IRQHandler(void)
{
unsigned char status,i;
OS_CPU_SR cpu_sr;
OS_ENTER_CRITICAL(); //保存全局中断标志,关总中断 Tell uC/OS-II that we are starting an ISR
OSIntNesting++;
OS_EXIT_CRITICAL(); //恢复全局中断标志
if(EXTI_GetITStatus(EXTI_Line0) != RESET) //判断是否产生了EXTI0中断
{
if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0)==0){ //判断是否是PA0线变低
status=SPI_Read(READ_REG1+STATUS); // 读取状态寄存其来判断数据接收状况
if(status & 0x40) // 判断是否接收到数据
{
SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH); //从接收缓冲区里读出数据
for(i=0; i<32; i++){ //向USB 端点1的缓冲区里放置数据
TxBufferUSART[i] = rx_buf[i];
}
rf_rec_flag=1;
if((status&0x0e)<=0x0a){
nrf_Pipe_r=(status&0x0e)>>1; //读出是在哪个通道接收的
}
else nrf_Pipe_r=0;
Rx_Succ=1; //读取数据完成标志
/* 根据读出的接收通道号，将相应信息写入状态文本缓冲区 */
if(nrf_Pipe_r==0) memcpy(status_buf, "Pipe 0 Recive OK! ", 20);
else if(nrf_Pipe_r==1) memcpy(status_buf, "Pipe 1 Recive OK! ", 20);
else if(nrf_Pipe_r==2) memcpy(status_buf, "Pipe 2 Recive OK! ", 20);
else if(nrf_Pipe_r==3) memcpy(status_buf, "Pipe 3 Recive OK! ", 20);
else if(nrf_Pipe_r==4) memcpy(status_buf, "Pipe 4 Recive OK! ", 20);
else if(nrf_Pipe_r==5) memcpy(status_buf, "Pipe 5 Recive OK! ", 20);
}
else if((status &0x10)>0){ //发射达到最大复发次数
SPI_RW_Reg(0xe1,0); //清除发送缓冲区
RX_Mode(); //进入接收模式
Rx_Succ=1;
/* 根据发送通道，将相应信息写入状态文本缓冲区 */
if(nrf_Pipe==0) memcpy(status_buf, "Pipe 0 NO ACK! ", 20);
else if(nrf_Pipe==1) memcpy(status_buf, "Pipe 1 NO ACK! ", 20);
else if(nrf_Pipe==2) memcpy(status_buf, "Pipe 2 NO ACK! ", 20);
else if(nrf_Pipe==3) memcpy(status_buf, "Pipe 3 NO ACK! ", 20);
else if(nrf_Pipe==4) memcpy(status_buf, "Pipe 4 NO ACK! ", 20);
else if(nrf_Pipe==5) memcpy(status_buf, "Pipe 5 NO ACK! ", 20);
}
else if((status &0x20)>0){ //发射后收到应答
SPI_RW_Reg(0xe1,0); //清除发送缓冲区
RX_Mode(); //进入接收模式
Rx_Succ=1;
/* 根据发送通道，将相应信息写入状态文本缓冲区 */
if(nrf_Pipe==0) memcpy(status_buf, "Pipe 0 Send OK! ", 20);
else if(nrf_Pipe==1) memcpy(status_buf, "Pipe 1 Send OK! ", 20);
else if(nrf_Pipe==2) memcpy(status_buf, "Pipe 2 Send OK! ", 20);
else if(nrf_Pipe==3) memcpy(status_buf, "Pipe 3 Send OK! ", 20);
else if(nrf_Pipe==4) memcpy(status_buf, "Pipe 4 Send OK! ", 20);
else if(nrf_Pipe==5) memcpy(status_buf, "Pipe 5 Send OK! ", 20);
}
SPI_RW_Reg(WRITE_REG1+STATUS, status); //清除07寄存器标志
}
EXTI_ClearITPendingBit(EXTI_Line0); //清除EXTI0上的中断标志
}
OSIntExit(); //在os_core.c文件里定义,如果有更高优先级的任务就绪了,则执行一次任务切换
}
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