nRF24L01基于arduino UNO板的收发程序（无bug）

[helldealer2015]

楼主处女贴，贴出最近写的基于arduino UNO板的nRF24L01接收与发射程序，实现功能：发送方每隔1.5s发送16字节数据包给接收方。程序无BUG，但是也有一些问题：比如我程序中发射过程中CE一直是高，没有做到低功耗。贴出来供大家交流，共同进步

[helldealer2015]

#include <SPI.h> #define TX_ADR_WIDTH 5 // 5 unsigned chars TX(RX) address width #define TX_PLOAD_WIDTH 16 // 32 unsigned chars TX payload byte READ_REG = 0x00; // Define read command to register byte WRITE_REG = 0x20; // Define write command to register byte RD_RX_PLOAD = 0x61; // Define RX payload register address byte WR_TX_PLOAD = 0xA0; // Define TX payload register address byte FLUSH_TX = 0xE1; // Define flush TX register command byte FLUSH_RX = 0xE2; // Define flush RX register command #define REUSE_TX_PL 0xE3 // Define reuse TX payload register command #define NOP 0xFF // Define No Operation, might be used to read status register //***************************************************// // SPI(nRF24L01) registers(addresses) #define CONFIG 0x00 // 'Config' register address #define EN_AA 0x01 // 'Enable Auto Acknowledgment' register address #define EN_RXADDR 0x02 // 'Enabled RX addresses' register address #define SETUP_AW 0x03 // 'Setup address width' register address #define SETUP_RETR 0x04 // 'Setup Auto. Retrans' register address #define RF_CH 0x05 // 'RF channel' register address #define RF_SETUP 0x06 // 'RF setup' register address #define STATUS 0x07 // 'Status' register address #define OBSERVE_TX 0x08 // 'Observe TX' register address #define CD 0x09 // 'Carrier Detect' register address #define RX_ADDR_P0 0x0A // 'RX address pipe0' register address #define RX_ADDR_P1 0x0B // 'RX address pipe1' register address #define RX_ADDR_P2 0x0C // 'RX address pipe2' register address #define RX_ADDR_P3 0x0D // 'RX address pipe3' register address #define RX_ADDR_P4 0x0E // 'RX address pipe4' register address #define RX_ADDR_P5 0x0F // 'RX address pipe5' register address #define TX_ADDR 0x10 // 'TX address' register address #define RX_PW_P0 0x11 // 'RX payload width, pipe0' register address #define RX_PW_P1 0x12 // 'RX payload width, pipe1' register address #define RX_PW_P2 0x13 // 'RX payload width, pipe2' register address #define RX_PW_P3 0x14 // 'RX payload width, pipe3' register address #define RX_PW_P4 0x15 // 'RX payload width, pipe4' register address #define RX_PW_P5 0x16 // 'RX payload width, pipe5' register address #define FIFO_STATUS 0x17 // 'FIFO Status Register' register address #define STA_MARK_RX 0X40 #define STA_MARK_TX 0X20 #define STA_MARK_MX 0X10 byte TX_ADDRESS[TX_ADR_WIDTH] = { 0x34,0x43,0x10,0x10,0x01}; // Define a static TX address byte const RX_ADDRESS[TX_ADR_WIDTH] = { 0x34,0x43,0x10,0x10,0x01}; //***************************************************************// // FUNCTION's PROTOTYPES // //**************************************************************** void RF_init(); // Init HW or SW SPI byte SPI_Read(byte reg); // Read one unsigned char from nRF24L01 unsigned char RW_Reg(byte reg, byte value); // Write one unsigned char to register 'reg' unsigned char SPI_Write_Buf(byte reg, byte *pBuf, byte bytes); // Writes multiply unsigned chars to one register unsigned char SPI_Read_Buf(byte reg, byte *pBuf, byte bytes); // Read multiply unsigned chars from one register void RX_Mode(void); void clearTXFIFO(void); unsigned char send_data(unsigned char *buf); unsigned char receive_data(unsigned char *buf); void ifnnrf_CLEAR_ALL(); void SPI_CLR_Reg(byte R_T); int IRQ = 8; int CE = 9; int CSN = 10; unsigned char txData[32]={ 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f}; unsigned char rxData[32]={ 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f}; void setup() { pinMode (CSN, OUTPUT); pinMode (CE, OUTPUT); pinMode (IRQ, INPUT); digitalWrite(IRQ,HIGH); SPI.begin(); Serial.begin(9600); RF_init(); delay(10); Serial.print("System initialization compeleted!"); void RX_Mode(); } void loop() { if(send_data(txData)==1) { Serial.println("send success"); delay(1500); }else { Serial.println("send fail"); delay(1500); } } //--------------------------------------------------------------------- //NRF24l01 function /*----------------------- Function: init(); Description: initialize the NRF24L01 chip. */ void RF_init(){ digitalWrite(CE,LOW); //chip enable digitalWrite(CSN,HIGH); //Spi disable } /*------------------------ Function: RW_Reg(); Description: Writes value 'value' to register 'reg' */ unsigned char RW_Reg(byte reg,byte value){ unsigned char sta = 0; digitalWrite(CSN,LOW); sta = SPI.transfer(reg); SPI.transfer(value); digitalWrite(CSN,HIGH); return(sta); } /*-------------------------- */ byte SPI_Read(byte reg) { byte reg_val; digitalWrite(CSN,LOW); // CSN low, initialize SPI communication... SPI.transfer(reg); // Select register to read from.. reg_val = SPI.transfer(0); // ..then read registervalue digitalWrite(CSN,HIGH); // CSN high, terminate SPI communication return(reg_val); // return register value } /*--------------------------- Function:SPI_Read_Buf(); Description: Reads 'unsigned chars' of unsigned chars from regester 'reg' Typically used to read RX payload,RX/TX address */ unsigned char SPI_Read_Buf(byte reg,byte *pBuf,byte bytes){ unsigned char sta,byte_ctr; digitalWrite(CSN,LOW); sta = SPI.transfer(reg); for(byte_ctr=0;byte_ctr<bytes;byte_ctr++) pBuf[byte_ctr] = SPI.transfer(0); digitalWrite(CSN,HIGH); return(sta); } /*------------------------------ Function:SPI_Write_Buf() Description: Writes contents of buffer '*pBuf' to nRF24L01 Typically used to write TX payload,Rx/Tx address */ unsigned char SPI_Write_Buf(byte reg,byte *pBuf,byte bytes){ unsigned char sta,byte_ctr; digitalWrite(CSN,LOW); sta = SPI.transfer(reg); for(byte_ctr=0;byte_ctr<bytes;byte_ctr++) SPI.transfer(*pBuf++); digitalWrite(CSN,HIGH); return(sta); } /*------------------------------- Function power_off() Description: This function initializes one nRF24L01 device to Power off Mode. */ void power_off(){ digitalWrite(CE,LOW); RW_Reg(WRITE_REG+CONFIG,0x0D); digitalWrite(CE,HIGH); delay(160); } /*------------------------------- Function RX_Mode() Description: This function initializes one nRF24L01 device to RX Mode Set RX address,writes RX payload width,select RF channel, datarate & LNA HCURR. After init,CE is TOGGLED to high, which means that this device is now ready to receave a datapacket. */ void RX_Mode(){ power_off(); digitalWrite(CE,LOW); SPI_Write_Buf(WRITE_REG+TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // Writes TX_Address to nRF24L01 SPI_Write_Buf(WRITE_REG+RX_ADDR_P0,TX_ADDRESS,TX_ADR_WIDTH); RW_Reg(WRITE_REG+EN_AA,0x00); RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // Enable Pipe0 RW_Reg(WRITE_REG + RF_CH, 0); // Select RF channel 40 RW_Reg(WRITE_REG + RX_PW_P0, TX_PLOAD_WIDTH); // Select same RX payload width as TX Payload width RW_Reg(WRITE_REG + RF_SETUP, 0x07); // TX_PWR:0dBm, Datarate:2Mbps, LNA:HCURR RW_Reg(WRITE_REG + CONFIG, 0x0f); // Set PWR_UP bit, enable CRC(2 unsigned chars) & Prim:RX. RX_DR enabled.. RW_Reg(WRITE_REG+STATUS,0xff); // 清除所有中断标志 digitalWrite(CE,HIGH); // Set CE pin high to enable RX device delay(1); }

[helldealer2015]

/*-------------------------------- Function: clearTXFIFO() Description: Clear TXFIFO geg. */ void clearTXFIFO(void){ digitalWrite(CSN,LOW); SPI.transfer(FLUSH_TX); delayMicroseconds(10); digitalWrite(CSN,HIGH); } /*-------------------------------- Function send_data() Description: This function initializes one nRF24L01 chip to TX Mode, AND send data. */ unsigned char send_data(unsigned char *buf) { unsigned int uiNum; byte sta; power_off(); digitalWrite(CE,LOW); RW_Reg(WRITE_REG + EN_AA, 0x01); // Enable Auto.Ack:Pipe0 RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // Enable Pipe0 RW_Reg(WRITE_REG + SETUP_RETR, 0x1a); // 500us + 86us, 10 retrans... RW_Reg(WRITE_REG + RF_CH, 0); // Select RF channel 40 RW_Reg(WRITE_REG + RF_SETUP, 0x07); // TX_PWR:0dBm, Datarate:2Mbps, LNA:HCURR SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, 0x05); // Writes TX_Address to nRF24L01 SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, 0x05); // RX_Addr0 same as TX_Adr for Auto.Ack RW_Reg(FLUSH_TX,0x00); SPI_Write_Buf(WR_TX_PLOAD, buf, TX_PLOAD_WIDTH); // Writes data to TX payload //Serial.println(SPI_Read(TX_ADDR),HEX); RW_Reg(WRITE_REG + CONFIG, 0x0e); // Set PWR_UP bit, enable CRC(2 unsigned chars) & Prim:TX. MAX_RT & TX_DS enabled.. digitalWrite(IRQ,HIGH); digitalWrite(CE,HIGH); delayMicroseconds(200); //digitalWrite(CE,LOW); //Serial.println("sendhalf"); uiNum = 0; while(digitalRead(IRQ) == 1) { if (uiNum > 20000) { uiNum = 0; ifnnrf_CLEAR_ALL(); // Serial.print("IRQ == 1"); //delay(1000); return 0; } else { uiNum++; delayMicroseconds(10); } } /* if(digitalRead(IRQ)==0) { Serial.print("IRQ == 0!!!"); } sta = SPI_Read(STATUS); Serial.print(sta,HEX); sta = SPI_Read(FIFO_STATUS); Serial.println(sta,HEX); */ if (SPI_Read(STATUS) & STA_MARK_TX) { RW_Reg(WRITE_REG+STATUS,0xFF); // 清除所有中断标志 clearTXFIFO(); // Serial.print("STA1"); return 1; } else { RW_Reg(WRITE_REG+STATUS,0xFF); // 清除所有中断标志 clearTXFIFO(); //Serial.print("STA0"); } return 0; } /*------------------------- Function: receive_data() Description: Receive data from the sender. */ unsigned char receive_data(unsigned char *buf){ unsigned char RXflag = 0; if(digitalRead(IRQ) == 0){ if (SPI_Read(STATUS) & STA_MARK_RX) { SPI_Read_Buf(RD_RX_PLOAD,buf,TX_PLOAD_WIDTH); RXflag = 1; RW_Reg(WRITE_REG+STATUS,0xff); // 清除所有中断标志 } else { ifnnrf_CLEAR_ALL(); RXflag = 0; } } digitalWrite(IRQ,HIGH); return RXflag; } /*------------------------- */ void SPI_CLR_Reg(byte R_T){ digitalWrite(CSN,LOW); if(R_T == 1) SPI.transfer(FLUSH_TX); else SPI.transfer(FLUSH_RX); digitalWrite(CSN,HIGH); } /*-------------------------- */ void ifnnrf_CLEAR_ALL(){ SPI_CLR_Reg(0); SPI_CLR_Reg(1); RW_Reg(WRITE_REG+STATUS,0xff); pinMode (IRQ, INPUT); digitalWrite(IRQ,HIGH); }

[helldealer2015]

上面的连起来是发送程序，程序的详细中文注解在下面的接收程序里

[zkk12345]

您好，此贴非常有用。请问可以放出接受程序和注释学习一下吗？