void EXTI9_5_IRQHandler(void) { uint8_t state = 0; if(EXTI_GetITStatus(EXTI_Line5) != RESET){ EXTI_ClearITPendingBit(EXTI_Line5); switch(NRF24L01_Get_State(&state)){ case TX_OK: NRF24L01_Write_Reg(NRF_WRITE_REG+STATUS,state); //清除TX_DS或MAX_RT中断标志 NRF24L01_Write_Reg(FLUSH_TX,0xff);//清除TX FIFO寄存器 nrf_state = TX_OK; break; case MAX_TX: NRF24L01_Write_Reg(NRF_WRITE_REG+STATUS,state); //清除TX_DS或MAX_RT中断标志 NRF24L01_Write_Reg(FLUSH_TX,0xff);//清除TX FIFO寄存器 nrf_state = MAX_TX; break; case RX_OK: NRF24L01_Write_Reg(NRF_WRITE_REG+STATUS, state); //清除TX_DS或MAX_RT中断标志 NRF24L01_Read_Buf(RD_RX_PLOAD, nrf_rx_buffer, RX_PLOAD_WIDTH); //读取数据 NRF24L01_Write_Reg(FLUSH_TX, 0xff); //清除TX FIFO寄存器 nrf_state = RX_OK; break; } } }
//检测24L01是否存在 //返回值:0,成功;1,失败 u8 NRF24L01_Check(void) { u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; u8 i; SPI2_SetSpeed(SPI_BaudRatePrescaler_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz) NRF24L01_Write_Buf(WRITE_REG_NRF+TX_ADDR,buf,5);//写入5个字节的地址. NRF24L01_Read_Buf(TX_ADDR,buf,5); //读出写入的地址 for(i=0;i<5;i++)if(buf[i]!=0XA5)break; if(i!=5)return 1;//检测24L01错误 return 0; //检测到24L01 }
//上电检测NRF24L01是否在位 //写5个数据然后再读回来进行比较, //相同时返回值:0,表示在位;否则返回1,表示不在位 u8 NRF24L01_Check(void) { u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; u8 buf1[5]; u8 i; NRF24L01_Write_Buf(SPI_WRITE_REG+TX_ADDR,buf,5);//写入5个字节的地址. NRF24L01_Read_Buf(TX_ADDR,buf1,5); //读出写入的地址 for(i=0;i<5;i++)if(buf1[i]!=0XA5)break; if(i!=5)return 1; //NRF24L01不在位 return 0; //NRF24L01在位 }
/******************************************************************************* * Function Name : NRF24L01_Check * Description : 上电检测NRF24L01是否在位 * Input : None * Output : None * Return : RT_EOK:表示在位;RT_ERROR,表示不在位 *******************************************************************************/ static rt_err_t NRF24L01_Check(void) { rt_uint8_t buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; rt_uint8_t buf1[5]; rt_uint8_t i; NRF24L01_Write_Buf(SPI_WRITE_REG+TX_ADDR,buf,5);//写入5个字节的地址. NRF24L01_Read_Buf(TX_ADDR,buf1,5); //读出写入的地址 for(i=0;i<5;i++)if(buf1[i]!=0XA5)break; if(i!=5)return RT_ERROR; //NRF24L01不在位 return RT_EOK; //NRF24L01在位 }
u8 NRF24L01_Check(void) { u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; u8 i; // SPIx_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz) NRF24L01_Write_Buf(WRITE_REG+TX_ADDR,buf,5);//写入5个字节的地址. NRF24L01_Read_Buf(TX_ADDR,buf,5); //读出写入的地址 for(i=0;i<5;i++)if(buf[i]!=0XA5)break; printf("i=%d\n",i); if(i!=5)return 1;//检测24L01错误 return 0; //检测到24L01 }
// Receive data packet u8 NRF24L01_RxPacket(u8 *rxbuf) { u8 sta; sta=NRF24L01_Read_Reg(NRF_STATUS); NRF24L01_Write_Reg(NRF_STATUS,sta); if(sta & NRF_RX_OK ) { NRF24L01_Read_Buf(rxbuf,NRF_PLOAD_WIDTH); NRF24L01_Flush_RX(); return NRF_RX_OK; } return 0x00; }
/******************************************************************************* * Function Name : NRF24L01_RxPacket * Description : 启动NRF24L01接收一次数据 * Input : rxbuf:接收数据首地址 * Output : None * Return : 接收完成状况 *******************************************************************************/ static rt_err_t NRF24L01_RxPacket(rt_uint8_t *rxbuf) { rt_uint8_t state; state=NRF24L01_Read_Reg(STATUS); //读取状态寄存器的值 NRF24L01_Write_Reg(SPI_WRITE_REG+STATUS,state); //清除TX_DS或MAX_RT中断标志 if(state&RX_OK) //接收到数据 { NRF24L01_Read_Buf(RD_RX_PLOAD,rxbuf,RX_PLOAD_WIDTH);//读取数据 NRF24L01_Write_Reg(FLUSH_RX,0xff); //清除RX FIFO寄存器 return RT_EOK; } return RT_ERROR; //没收到任何数据 }
//启动NRF24L01发送一次数据 //txbuf:待发送数据首地址 //返回值:0,接收完成;其他,错误代码 u8 NRF24L01_RxPacket(u8 *rxbuf) { u8 state; state=NRF24L01_Read_Reg(STATUS); //读取状态寄存器的值 NRF24L01_Write_Reg(SPI_WRITE_REG+STATUS,state); //清除TX_DS或MAX_RT中断标志 if(state&RX_OK) //接收到数据 { NRF24L01_Read_Buf(RD_RX_PLOAD,rxbuf,RX_PLOAD_WIDTH);//读取数据 NRF24L01_Write_Reg(FLUSH_RX,0xff); //清除RX FIFO寄存器 return 0; } return 1; //没收到任何数据 }
//启动NRF24L01发送一次数据 //txbuf:待发送数据首地址 //返回值:0,接收完成;其他,错误代码 u8 NRF24L01_RxPacket(u8 *rxbuf) { u8 sta; SPI2_SetSpeed(SPI_BaudRatePrescaler_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz) sta=NRF24L01_Read_Reg(STATUS); //读取状态寄存器的值 NRF24L01_Write_Reg(WRITE_REG_NRF+STATUS,sta); //清除TX_DS或MAX_RT中断标志 if(sta&RX_OK)//接收到数据 { NRF24L01_Read_Buf(RD_RX_PLOAD,rxbuf,RX_PLOAD_WIDTH);//读取数据 NRF24L01_Write_Reg(FLUSH_RX,0xff);//清除RX FIFO寄存器 return 0; } return 1;//没收到任何数据 }
//检测24L01是否存在 //返回值:0,成功;1,失败 uint8_t NRF24L01_Check(void) { uint8_t buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; uint8_t i; spi_set_speed(SPI_BaudRatePrescaler_8); //spi速度为10.5Mhz(24L01的最大SPI时钟为10Mhz) NRF24L01_Write_Buf(NRF_WRITE_REG+TX_ADDR,buf,5); //写入5个字节的地址. NRF24L01_Read_Buf(TX_ADDR,buf,5); //读出写入的地址 for(i=0;i<5;i++){ if(buf[i]!=0XA5){ return 1;//检测24L01错误 } } return 0; //检测到24L01 }
unsigned char NRF24L01_RxPacket(unsigned char *rxbuf) { unsigned char sta; //SPIx_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz) sta=nrf_read(STATUS); //读取状态寄存器的值 nrf_write(W_REGISTER+STATUS,sta); //清除TX_DS或MAX_RT中断标志 if(sta&0x40)//接收到数据 { NRF24L01_Read_Buf(0x61,rxbuf,TX_DATA_WITDH);//读取数据 nrf_write(FLUSH_RX,0xff);//清除RX FIFO寄存器 return 0; } return 1;//没收到任何数据 }
//////////////////// /// ///注意:执行完后会进入待机模式,如需进行下一次接收,必须使能CE,或者重新使用NRF24L01_RX_Mode();进入接收模式 ////////////////////// u8 NRF24L01_RxPacket(u8 *rxbuf) { u8 sta; NRF24L01_CE_L(); //进入待机模式 SPI2_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz) sta=NRF24L01_Read_Reg(NRF24L01_STATUS); //读取状态寄存器的值 NRF24L01_Write_Reg(NRF24L01_WRITE_REG+NRF24L01_STATUS,sta); //清除TX_DS或MAX_RT中断标志 if(sta&NRF24L01_RX_OK)//接收到数据 { NRF24L01_Read_Buf(NRF24L01_RD_RX_PLOAD,rxbuf,NRF24L01_RX_PLOAD_WIDTH);//读取数据 NRF24L01_Write_Reg(NRF24L01_FLUSH_RX,0xff);//清除RX FIFO寄存器 return NRF24L01_RX_OK; } return 0;//没收到任何数据 }
u8 NRF24L01_Check(void) { u8 buf[5]={0XA5,0XA5,0XA5,0XA5,0XA5}; u8 i; SPI2_SetSpeed(SPI_SPEED_8); //spi速度为9Mhz(24L01的最大SPI时钟为10Mhz) NRF24L01_Write_Buf(NRF24L01_WRITE_REG+NRF24L01_TX_ADDR,buf,5);//写入5个字节的地址. NRF24L01_Read_Buf(NRF24L01_TX_ADDR,buf,5); //读出写入的地址 for(i=0;i<5;i++) { if(buf[i]!=0XA5) break; } if(i==5) return 1;//检测到24L01 return 0; //检测24L01错误 }
void NRF24L01_Check_Event(void) { u8 sta; sta = NRF24L01_Read_Reg(NRF_READ_REG + STATUS); //读取状态寄存器的值 //接收到数据 if(sta & RX_OK){ u8 rx_len = NRF24L01_Read_Reg(R_RX_PL_WID); if(rx_len<33) { NRF24L01_Read_Buf(RD_RX_PLOAD,NRF24L01_RXDATA,rx_len);// read receive payload from RX_FIFO buffer RemoteData_Handle(NRF24L01_RXDATA,rx_len); } else { NRF24L01_Write_Reg(FLUSH_RX,0xff);//清空缓冲区 } } NRF24L01_Write_Reg(NRF_WRITE_REG + STATUS, sta); }
void rf1read(void) { rt_uint8_t data; rt_uint8_t buf[32]; NRF24L01_Read_Buf( CONFIG , &data , 1); rt_kprintf("\r\n CONFIG = 0x%02x", data); NRF24L01_Read_Buf( EN_AA , &data , 1); rt_kprintf("\r\n EN_AA = 0x%02x", data); NRF24L01_Read_Buf( EN_RXADDR , &data , 1); rt_kprintf("\r\n EN_RXADDR = 0x%02x", data); NRF24L01_Read_Buf( SETUP_AW , &data , 1); rt_kprintf("\r\n SETUP_AW = 0x%02x", data); NRF24L01_Read_Buf( SETUP_RETR , &data , 1); rt_kprintf("\r\n SETUP_RETR = 0x%02x",data); NRF24L01_Read_Buf( RF_CH , &data , 1); rt_kprintf("\r\n RF_CH = 0x%02x",data); NRF24L01_Read_Buf( RF_SETUP , &data , 1); rt_kprintf("\r\n RF_SETUP = 0x%02x",data); NRF24L01_Read_Buf( STATUS , &data , 1); rt_kprintf("\r\n STATUS = 0x%02x",data); NRF24L01_Read_Buf( OBSERVE_TX , &data , 1); rt_kprintf("\r\n OBSERVE_TX = 0x%02x",data); NRF24L01_Read_Buf( CD , &data , 1); rt_kprintf("\r\n CD = 0x%02x",data); NRF24L01_Read_Buf( RX_ADDR_P0 , buf , 5); rt_kprintf("\r\n RX_ADDR_P0 = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x", buf[0],buf[1],buf[2],buf[3],buf[4]); NRF24L01_Read_Buf( RX_ADDR_P1 , buf , 5); rt_kprintf("\r\n RX_ADDR_P1 = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x", buf[0],buf[1],buf[2],buf[3],buf[4]); NRF24L01_Read_Buf( RX_ADDR_P2 , &data , 1); rt_kprintf("\r\n RX_ADDR_P2 = 0x%02x",data); NRF24L01_Read_Buf( RX_ADDR_P3 , &data , 1); rt_kprintf("\r\n RX_ADDR_P3 = 0x%02x",data); NRF24L01_Read_Buf( RX_ADDR_P4 , &data , 1); rt_kprintf("\r\n RX_ADDR_P4 = 0x%02x",data); NRF24L01_Read_Buf( RX_ADDR_P5 , &data , 1); rt_kprintf("\r\n RX_ADDR_P5 = 0x%02x",data); NRF24L01_Read_Buf( TX_ADDR , buf , 5); rt_kprintf("\r\n TX_ADDR = 0x%02x 0x%02x 0x%02x 0x%02x 0x%02x", buf[0],buf[1],buf[2],buf[3],buf[4]); NRF24L01_Read_Buf( RX_PW_P0 , &data , 1); rt_kprintf("\r\n RX_PW_P0 = 0x%02x",data); NRF24L01_Read_Buf( RX_PW_P1 , &data , 1); rt_kprintf("\r\n RX_PW_P1 = 0x%02x",data); NRF24L01_Read_Buf( RX_PW_P2 , &data , 1); rt_kprintf("\r\n RX_PW_P2 = 0x%02x",data); NRF24L01_Read_Buf( RX_PW_P3 , &data , 1); rt_kprintf("\r\n RX_PW_P3 = 0x%02x",data); NRF24L01_Read_Buf( RX_PW_P4 , &data , 1); rt_kprintf("\r\n RX_PW_P4 = 0x%02x",data); NRF24L01_Read_Buf( RX_PW_P5 , &data , 1); rt_kprintf("\r\n RX_PW_P5 = 0x%02x",data); NRF24L01_Read_Buf( FIFO_STATUS , &data , 1); rt_kprintf("\r\n FIFO_STATUS = 0x%02x",data); }