51单片机控制nRF24L01收发数据程序.docx

#include #include typedef unsigned char uchar;typedef unsigned char uint;/*NRF24L01端口定义*sbit MISO=P13;sbit MOSI=P14;sbitSCK =P12;sbitCE =P11;sbitCSN=P32;sbitIRQ=P33;/*按键*sbitKEY1=P36;sbitKEY2=P37;/*数码管位选*sbitled0=P20;sbitled1=P21;sbitled2=P22;sbitled3=P23;/*数码管0-9编码*/自己uchar seg10=0xC0,0xCF,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90; /09编码/*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 20 / 20 uints TX payload#define RX_PLOAD_WIDTH 20 / 20 uints TX payloaduint const TX_ADDRESSTX_ADR_WIDTH= 0x34,0x43,0x10,0x10,0x01;/本地地址uint const RX_ADDRESSRX_ADR_WIDTH= 0x34,0x43,0x10,0x10,0x01;/接受地址/*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 / 读取接受数据指令#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 / 冲洗接受虵IFO指令#define REUSE_TX_PL 0xE3 / 定义重装载数据指令#define NOP 0xFF / 保留/*SPI(nRF24L01)寄存器地址*#define CONFIG 0x00 #define EN_AA 0x01 #define EN_RXADDR 0x02 #define SETUP_AW 0x03 #define SETUP_RETR 0x04 #define RF_CH 0x05 #define RF_SETUP 0x06 #define STATUS 0x07 #define OBSERVE_TX 0x08 #define CD 0x09 #define RX_ADDR_P0 0x0A #define RX_ADDR_P1 0x0B #define RX_ADDR_P2 0x0C #define RX_ADDR_P3 0x0D #define RX_ADDR_P4 0x0E #define RX_ADDR_P5 0x0F #define TX_ADDR 0x10 #define RX_PW_P0 0x11 #define RX_PW_P1 0x12 #define RX_PW_P2 0x13 #define RX_PW_P3 0x14 #define RX_PW_P4 0x15 #define RX_PW_P5 0x16 #define FIFO_STATUS 0x17 /*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; is; i+);for(i=0; i0;n-)_nop_();/*/*NRF24L01初始化/*/void init_NRF24L01(void)inerDelay_us(100);CE=0; / chip enableCSN=1; / Spi disable SCK=0; / SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); SPI_RW_Reg(WRITE_REG + RF_CH, 0); SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); /*/*函数:uint SPI_RW(uint uchar)/*功能:NRF24L01的SPI写时序序/*/uint SPI_RW(uint uchar)uint bit_ctr; for(bit_ctr=0;bit_ctr8;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_ctruchars;uchar_ctr+)pBufuchar_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; status = SPI_RW(reg); for(uchar_ctr=0; uchar_ctruchars; uchar_ctr+) SPI_RW(*pBuf+);CSN = 1; return(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); CE = 1; inerDelay_us(130);/*/*函数:unsigned char nRF24L01_RxPacket(unsigned char* rx_buf)/*功能:数据读取后如rx_buf接受缓冲区中/*/unsigned char nRF24L01_RxPacket(unsigned char* rx_buf) unsigned char revale=0;sta=SPI_Read(STATUS);if(RX_DR) CE = 0; SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);revale =1;SPI_RW_Reg(WRITE_REG+STATUS,sta); 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;SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); CE=1; inerDelay_us(10);/*主函数*void main(void)unsigned char tf =0;unsigned char TxBuf20=0; unsigned char RxBuf20=0; init_NRF24L01() ;led2=0;led3=0; led0=0;led1=0;/P0=0x00;TxBuf1 = 1 ;TxBuf2 = 1 ;nRF24L01_TxPacket(TxBuf);/ Transmit Tx buffer dataDelay(6000);/P0=0xBF;while(1) if(KEY1 =0 ) led2=1;/自己P0=seg1;TxBuf1 = 1 ;tf = 1 ; if(KEY2 =0 ) /自己P0=seg2; led3=1; TxBuf2 =1 ;tf =