- /*******************************************************************************
- * 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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