NRF24L01地发送与接收程序

#include <reg52.h>#include <intrins.h>typedef unsigned char uchar;typedef unsigned char uint;//****************************************NRF24L01端口定义sbit MISO =P1^5;sbit MOSI =P1^1;sbit SCK =P1^6;sbit CE =P1^7;sbit CSN =P1^2;sbit IRQ =P1^0;//************************************按键sbit KEY1=P3^4;//************************************蜂明器sbit LED=P3^5;//**************#define TX_ADR_WIDTH 5 // 5 uints TX address width#define RX_ADR_WIDTH 5 // 5 uints RX address width#define TX_PLOAD_WIDTH 32 // 20 uints TX payload#define RX_PLOAD_WIDTH 32 // 20 uints TX payloaduint const TX_ADDRESS[TX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //本地地址uint const RX_ADDRESS[RX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //接收地址//***************************************NRF24L01寄存器指令#define READ_REG 0x00 // 读寄存器指令#define WRITE_REG 0x20 // 写寄存器指令#define RD_RX_PLOAD 0x61 // 读取接收数据指令#define WR_TX_PLOAD 0xA0 // 写待发数据指令#define FLUSH_TX 0xE1 // 冲洗发送FIFO指令#define FLUSH_RX 0xE2 // 冲洗接收FIFO指令#define REUSE_TX_PL 0xE3 // 定义重复装载数据指令#define NOP 0xFF // 保留//*************************************SPI(nRF24L01)寄存器地址#define CONFIG 0x00 // 配置收发状态，CRC校验模式以及收发状态响应方式#define EN_AA 0x01 // 自动应答功能设置#define EN_RXADDR 0x02 // 可用信道设置#define SETUP_AW 0x03 // 收发地址宽度设置#define SETUP_RETR 0x04 // 自动重发功能设置#define RF_CH 0x05 // 工作频率设置#define RF_SETUP 0x06 // 发射速率、功耗功能设置#define STATUS 0x07 // 状态寄存器#define OBSERVE_TX 0x08 // 发送监测功能#define CD 0x09 // 地址检测#define RX_ADDR_P0 0x0A // 频道0接收数据地址#define RX_ADDR_P1 0x0B // 频道1接收数据地址#define RX_ADDR_P2 0x0C // 频道2接收数据地址#define RX_ADDR_P3 0x0D // 频道3接收数据地址#define RX_ADDR_P4 0x0E // 频道4接收数据地址#define RX_ADDR_P5 0x0F // 频道5接收数据地址#define TX_ADDR 0x10 // 发送地址寄存器#define RX_PW_P0 0x11 // 接收频道0接收数据长度#define RX_PW_P1 0x12 // 接收频道0接收数据长度#define RX_PW_P2 0x13 // 接收频道0接收数据长度#define RX_PW_P3 0x14 // 接收频道0接收数据长度#define RX_PW_P4 0x15 // 接收频道0接收数据长度#define RX_PW_P5 0x16 // 接收频道0接收数据长度#define FIFO_STATUS 0x17 // FIFO栈入栈出状态寄存器设置//*****************************************************************************voidDelay(unsigned int s);void inerDelay_us(unsigned char n);void init_NRF24L01(void);uint SPI_RW(uint uchar);uchar SPI_Read(uchar reg);void SetRX_Mode(void);uint SPI_RW_Reg(uchar reg, uchar value);uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars);uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars);unsigned char nRF24L01_RxPacket(unsigned char* rx_buf);void nRF24L01_TxPacket(unsigned char * tx_buf);//*****************************************长延时void Delay(unsigned int s){unsigned int i;for(i=0; i<s; i++);for(i=0; i<s; i++);}//*****************************************************************************uint bdata sta; //状态标志sbit RX_DR =sta^6;sbit TX_DS =sta^5;sbit MAX_RT =sta^4;/******************************************************************************/*延时函数void inerDelay_us(unsigned char n){for(;n>0;n--)_nop_();}//*****************************************************************************/*NRF24L01初始化//*****************************************************************************/void init_NRF24L01(void){inerDelay_us(100);CE=0; // chip enableCSN=1; // Spi disableSCK=0; // Spi clock line init highSPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 写本地地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 写接收端地址SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // 频道0自动ACK应答允许SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // 允许接收地址只有频道0，如果需要多频道可以参考Page21SPI_RW_Reg(WRITE_REG + RF_CH, 0); // 设置信道工作为2.4GHZ，收发必须一致SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); //设置接收数据长度，本次设置为32字节SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //设置发射速率为1MHZ，发射功率为最大值0dBSPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收}/******************************************************************************/*函数：uint SPI_RW(uint uchar)/*功能：NRF24L01的SPI写时序/******************************************************************************uint SPI_RW(uint uchar){uint bit_ctr;for(bit_ctr=0;bit_ctr<8;bit_ctr++) // output 8-bit{MOSI = (uchar & 0x80); // output 'uchar', MSB to MOSIuchar = (uchar << 1); // shift next bit into MSB..SCK = 1; // Set SCK high..uchar |= MISO; // capture current MISO bitSCK = 0; // ..then set SCK low again}return(uchar); // return read uchar}/******************************************************************************/*函数：uchar SPI_Read(uchar reg)/*功能：NRF24L01的SPI时序/******************************************************************************uchar SPI_Read(uchar reg){uchar reg_val;CSN = 0; // CSN low, initialize SPI communication...SPI_RW(reg); // Select register to read from..reg_val = SPI_RW(0); // ..then read registervalueCSN = 1; // CSN high, terminate SPI communicationreturn(reg_val); // return register value}/*****************************************************************************//*功能：NRF24L01读写寄存器函数/*****************************************************************************/uint SPI_RW_Reg(uchar reg, uchar value){uint status;CSN = 0; // CSN low, init SPI transactionstatus = SPI_RW(reg); // select registerSPI_RW(value); // ..and write value to it..CSN = 1; // CSN high againreturn(status); // return nRF24L01 status uchar}/*****************************************************************************//*函数：uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于读数据，reg：为寄存器地址，pBuf：为待读出数据地址，uchars：读出数据的个数/*****************************************************************************/uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars){uint status,uchar_ctr;CSN = 0; // Set CSN low, init SPI tranactionstatus = SPI_RW(reg); // Select register to write to and read status ucharfor(uchar_ctr=0;uchar_ctr<uchars;uchar_ctr++)pBuf[uchar_ctr] = SPI_RW(0); //CSN = 1;return(status); // return nRF24L01 status uchar}/******************************************************************************/*函数：uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于写数据：为寄存器地址，pBuf：为待写入数据地址，uchars：写入数据的个数/*****************************************************************************/uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars){uint status,uchar_ctr;CSN = 0; //SPI使能status = SPI_RW(reg);for(uchar_ctr=0; uchar_ctr<uchars; uchar_ctr++) //SPI_RW(*pBuf++);CSN = 1; //关闭SPIreturn(status); //}/*****************************************************************************//*函数：void SetRX_Mode(void)/*功能：数据接收配置/*****************************************************************************/void SetRX_Mode(void){CE=0;// SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收CE = 1;inerDelay_us(130);}/*****************************************************************************//*函数：unsigned char nRF24L01_RxPacket(unsigned char* rx_buf)/*功能：数据读取后放如rx_buf接收缓冲区中/*****************************************************************************/unsigned char nRF24L01_RxPacket(unsigned char* rx_buf){unsigned char revale=0;sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况if(RX_DR) // 判断是否接收到数据{CE = 0; //SPI使能SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);// read receive payload from RX_FIFO bufferrevale =1; //读取数据完成标志}SPI_RW_Reg(WRITE_REG+STATUS,sta); //接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志return revale;}/******************************************************************************/*函数：void nRF24L01_TxPacket(unsigned char * tx_buf)/*功能：发送tx_buf中数据/*****************************************************************************/void nRF24L01_TxPacket(unsigned char * tx_buf){CE=0; //StandBy I模式SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); // 装载接收端地址SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 装载数据SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收发完成中断响应，16位CRC，主发送CE=1; //置高CE，激发数据发送inerDelay_us(10);}//************************************串口初始化void StartUART( void ){ //波特率4800SCON = 0x50;TMOD = 0x20;TH1 = 0xFA;TL1 = 0xFA;PCON = 0x00;TR1 = 1;}//************************************通过串口将接收到数据发送给PC端void R_S_Byte(uchar R_Byte){SBUF = R_Byte;while( TI == 0 ); //查询法TI = 0;}//************************************主函数void main(void){uchar i,temp;uchar RxBuf[32];init_NRF24L01() ;StartUART();Delay(6000);while(1){SetRX_Mode();if(nRF24L01_RxPacket(RxBuf)){LED=0;temp++;for(i=0;i<32;i++){R_S_Byte(RxBuf[i]);Delay(600);}}LED=1;Delay(600);}}#include <reg52.h>#include <intrins.h>typedef unsigned char uchar;typedef unsigned char uint;//****************************************NRF24L01端口定义sbit MISO =P1^5;sbit MOSI =P1^1;sbit SCK =P1^6;sbit CE =P1^7;sbit CSN =P1^2;sbit IRQ =P1^0;//************************************按键sbit KEY1=P3^4;//************************************蜂明器sbit LED=P3^5;//***********************************发送缓冲区uchar TxBuf[32]={0x01,0x02,0x03,0x4,0x05,0x06,0x07,0x08,0x09,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x30,0x31,0x32,}; ////*********************************************NRF24L01***********************#define TX_ADR_WIDTH 5 // 5 uints TX address width#define RX_ADR_WIDTH 5 // 5 uints RX address width#define TX_PLOAD_WIDTH 32 // 20 uints TX payload#define RX_PLOAD_WIDTH 32 // 20 uints TX payloaduint const TX_ADDRESS[TX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //本地地址uint const RX_ADDRESS[RX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //接收地址//***************************************NRF24L01寄存器指令#define READ_REG 0x00 // 读寄存器指令#define WRITE_REG 0x20 // 写寄存器指令#define RD_RX_PLOAD 0x61 // 读取接收数据指令#define WR_TX_PLOAD 0xA0 // 写待发数据指令#define FLUSH_TX 0xE1 // 冲洗发送FIFO指令#define FLUSH_RX 0xE2 // 冲洗接收FIFO指令#define REUSE_TX_PL 0xE3 // 定义重复装载数据指令#define NOP 0xFF // 保留//*************************************SPI(nRF24L01)寄存器地址#define CONFIG 0x00 // 配置收发状态，CRC校验模式以及收发状态响应方式#define EN_AA 0x01 // 自动应答功能设置#define EN_RXADDR 0x02 // 可用信道设置#define SETUP_AW 0x03 // 收发地址宽度设置#define SETUP_RETR 0x04 // 自动重发功能设置#define RF_CH 0x05 // 工作频率设置#define RF_SETUP 0x06 // 发射速率、功耗功能设置#define STATUS 0x07 // 状态寄存器#define OBSERVE_TX 0x08 // 发送监测功能#define CD 0x09 // 地址检测#define RX_ADDR_P0 0x0A // 频道0接收数据地址#define RX_ADDR_P1 0x0B // 频道1接收数据地址#define RX_ADDR_P2 0x0C // 频道2接收数据地址#define RX_ADDR_P3 0x0D // 频道3接收数据地址#define RX_ADDR_P4 0x0E // 频道4接收数据地址#define RX_ADDR_P5 0x0F // 频道5接收数据地址#define TX_ADDR 0x10 // 发送地址寄存器#define RX_PW_P0 0x11 // 接收频道0接收数据长度#define RX_PW_P1 0x12 // 接收频道0接收数据长度#define RX_PW_P2 0x13 // 接收频道0接收数据长度#define RX_PW_P3 0x14 // 接收频道0接收数据长度#define RX_PW_P4 0x15 // 接收频道0接收数据长度#define RX_PW_P5 0x16 // 接收频道0接收数据长度#define FIFO_STATUS 0x17 // FIFO栈入栈出状态寄存器设置//*****************************************************************************void Delay(unsigned int s);void inerDelay_us(unsigned char n);void init_NRF24L01(void);uint SPI_RW(uint uchar);uchar SPI_Read(uchar reg);void SetRX_Mode(void);uint SPI_RW_Reg(uchar reg, uchar value);uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars);uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars);unsigned char nRF24L01_RxPacket(unsigned char* rx_buf);void nRF24L01_TxPacket(unsigned char * tx_buf);//*****************************************长延时void Delay(unsigned int s){unsigned int i;for(i=0; i<s; i++);for(i=0; i<s; i++);}//*****************************************************************************uint bdata sta; //状态标志sbit RX_DR =sta^6;sbit TX_DS =sta^5;sbit MAX_RT =sta^4;/******************************************************************************/*延时函数/*****************************************************************************/void inerDelay_us(unsigned char n){for(;n>0;n--)_nop_();}//*****************************************************************************/*NRF24L01初始化//****************/void init_NRF24L01(void){inerDelay_us(100);CE=0; // chip enableCSN=1; // Spi disableSCK=0; // Spi clock line init highSPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 写本地地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 写接收端地址SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // 频道0自动ACK应答允许SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // 允许接收地址只有频道0，如果需要多频道可以参考Page21SPI_RW_Reg(WRITE_REG + RF_CH, 0); // 设置信道工作为2.4GHZ，收发必须一致SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); //设置接收数据长度，本次设置为32字节SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //设置发射速率为1MHZ，发射功率为最大值0dBSPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收发完成中断响应，16位CRC，主发送}/**************/*函数：uint SPI_RW(uint uchar)/*功能：NRF24L01的SPI写时序/******************/uint SPI_RW(uint uchar){uint bit_ctr;for(bit_ctr=0;bit_ctr<8;bit_ctr++) // output 8-bit{MOSI = (uchar & 0x80); // output 'uchar', MSB to MOSIuchar = (uchar << 1); // shift next bit into MSB..SCK = 1; // Set SCK high..uchar |= MISO; // capture current MISO bitSCK = 0; // ..then set SCK low again}return(uchar); // return read uchar}/********************/*函数：uchar SPI_Read(uchar reg)/*功能：NRF24L01的SPI时序/********************/uchar SPI_Read(uchar reg){uchar reg_val;CSN = 0; // CSN low, initialize SPI communication...SPI_RW(reg); // Select register to read from..reg_val = SPI_RW(0); // ..then read registervalueCSN = 1; // CSN high, terminate SPI communicationreturn(reg_val); // return register value}/*******************//*功能：NRF24L01读写寄存器函数/*********************/uint SPI_RW_Reg(uchar reg, uchar value){uint status;CSN = 0; // CSN low, init SPI transactionstatus = SPI_RW(reg); // select registerSPI_RW(value); // ..and write value to it..CSN = 1; // CSN high againreturn(status); // return nRF24L01 status uchar}/*********************//*函数：uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于读数据，reg：为寄存器地址，pBuf：为待读出数据地址，uchars：读出数据的个数/*********************/uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars){uint status,uchar_ctr;CSN = 0; // Set CSN low, init SPI tranactionstatus = SPI_RW(reg); // Select register to write to and read status ucharfor(uchar_ctr=0;uchar_ctr<uchars;uchar_ctr++)pBuf[uchar_ctr] = SPI_RW(0); //CSN = 1;return(status); // return nRF24L01 status uchar}/**************************/*函数：uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于写数据：为寄存器地址，pBuf：为待写入数据地址，uchars：写入数据的个数/**************************/uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars){uint status,uchar_ctr;CSN = 0; //SPI使能status = SPI_RW(reg);for(uchar_ctr=0; uchar_ctr<uchars; uchar_ctr++) //SPI_RW(*pBuf++);CSN = 1; //关闭SPIreturn(status); //}/********************//*函数：void SetRX_Mode(void)/*功能：数据接收配置/**********************/void SetRX_Mode(void){CE=0;SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收CE = 1;inerDelay_us(130); //延时不能太短}/**********************//*函数：unsigned char nRF24L01_RxPacket(unsigned char* rx_buf)/*功能：数据读取后放如rx_buf接收缓冲区中/***********************/unsigned char nRF24L01_RxPacket(unsigned char* rx_buf){unsigned char revale=0;sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况if(RX_DR) // 判断是否接收到数据{CE = 0; //SPI使能SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);// read receive payload from RX_FIFO bufferrevale =1; //读取数据完成标志}SPI_RW_Reg(WRITE_REG+STATUS,sta); //接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志return revale;}/****************************/*函数：void nRF24L01_TxPacket(unsigned char * tx_buf)/*功能：发送tx_buf中数据/****************************/void nRF24L01_TxPacket(unsigned char * tx_buf){CE=0; //StandBy I模式SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); // 装载接收端地址SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 装载数据// SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收发完成中断响应，16位CRC，主发送CE=1; //置高CE，激发数据发送inerDelay_us(10);}//************************************主函数void main(void){uchar temp =0;init_NRF24L01() ;nRF24L01_TxPacket(TxBuf); // Transmit Tx buffer dataDelay(6000);P0=0xBF;while(1){nRF24L01_TxPacket(TxBuf); // Transmit Tx buffer dataLED=0;Delay(10000); //可变SPI_RW_Reg(WRITE_REG+STATUS,0XFF);LED=1;Delay(8000);}}。