NRF24L01接收程序可用

1、*接收程序*#include #include typedef unsigned char uchar;/*NRF24L01端口定sbitMISO=P1A5;sbitMOSI=P1A1;sbitSCK=P6;sbitCE=p“7；sbitCSN=P1A2;sbitIRQ=P1A0;*#define TX_ADR_WIDTH5 / 5 uints TX address width#define RX_ADR_WIDTH5/ 5 uints RX address width#define TX_PLOAD_WIDTH 32/ 20 uints TX payload#define RX_PLOAD_

2、WIDTH 32/ 20 uints TX payloaduchar const TX_ADDRESSTX_ADR_WIDTH= 0x34,0x43,0x10,0x10,0x01; /本/ 地地址uchar const RX_ADDRESSRX_ADR_WIDTH= 0x34,0x43,0x10,0x10,0x01; 接/ 收地址/*NRF24L01寄存器指*#define READ_REG0x00/读寄存器指令#define WRITE_REG0x20/写寄存器指令#define RD_RX_PLOAD0x61/读取接收数据指令#define WR_TX_PLOAD0xA0/写待发数据指令#

3、define FLUSH_TX0xE1 /冲洗发送FIFO指令#define FLUSH_RX0xE2/冲洗接收FIF O指令#define REUSE_TX_PL0xE3/定义重复装载数据指令#define NOP0xFF/保留*/*SPI(nRF24L01)*#define CONFIG0x00/配置收发状态，CRC校验模式以及收发状态响应万式#define EN_AA0x01/自动应答功能设置#define EN_RXADDR0x02/可用信道设置#define SETUP_AW0x03/收发地址宽度设置#define SETUP_RETR0x04/自动重发功能设置#define RF_

4、CH0x05/工作频率设置#define RF_SETUP0x06/发射速率、功耗功能设置#define STATUS0x07/状态寄存器#define OBSERVE_TX0x08/发送监测功能#define CD0x09/地址检测#define RX_ADDR_P00x0A/频道 0 接收数据地址#define RX_ADDR_P10x0B/频道 1 接收数据地址#define RX_ADDR_P20x0C/频道 2 接收数据地址#define RX_ADDR_P30x0D/频道 3 接收数据地址#define RX_ADDR_P40x0E/频道 4 接收数据地址#define RX_AD

5、DR_P50x0F/频道 5 接收数据地址#define TX_ADDR0x10/发送地址寄存器#define RX_PW_P00x11/接收频道0 接收数据长度#define RX_PW_P10x12/接收频道0 接收数据长度#define RX_PW_P20x13/接收频道0 接收数据长度#define RX_PW_P30x14/接收频道0 接收数据长度#define RX_PW_P40x15/接收频道0 接收数据长度#define RX_PW_P50x16/接收频道0 接收数据长度#d efine FIFO_STATUS0x17/ FIFO 栈入栈出状态寄存器设置/*void Delay

6、(unsigned int s);void inerDelay_us(unsigned char n);void init_NRF24L01(void);uchar SPI_RW(uchar num);uchar SPI_Read(uchar reg);void SetRX_Mode(void);uchar SPI_RW_Reg(uchar reg, uchar value);uchar SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars);uchar SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uch

7、ars);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 disableSCK=0

8、; / 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_PO, 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_

9、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_SET UX07);/ 设置发射速率为 1MHZ，发射功率为最大值 0dBSPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); ，主接收/ IRQ 收发完成中断响应， 16 位 CRC/*/* 函数： uint SPI_RW(uint uchar)/*功能：NRF24L01的SPI写时序*uc

10、har SPI_RW(uchar num)uchar bit_ctr;for(bit_ctr=0;bit_ctr8;bit_ctr+) / output 8-bitMOSI = (num & 0x80); num = (num 1);SCK = 1;num |= MISO;SCK = 0;return(num);/ output uchar, MSB to MOSI/ shift next bit into MSB./ Set SCK high./ capture current M ISO bit/ .then set SCK low again/ return read uchar*/*功

11、能：NRF24L01读写寄存器函数/*/uchar SPI_RW_Reg(uchar reg, uchar value)uchar status;CSN = 0;/ CSN low, init SPI transactionstatus = SPI_RW(reg);/ select registerSPI_RW(value);CSN = 1;return(status);/ .and write value to it./ CSN high again/ return nRF24L01 status uchar*/* 函数： uint SPI_Read_Buf(uchar reg, uchar

12、 *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* uchar SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)uchar 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;u

13、char_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/*/uchar SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)uchar status,uchar_ctr;/SPI 使能CSN =

14、0;status = SPI_RW(reg);*for(uchar_ctr=0; uchar_ctruchars; 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： unsigne

15、d 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;while(IRQ!=0);CE = 0;/SPI 使能SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);/r/ead receive payload from RX_FIFO bufferrevale =1; / 读取数据完成标志SPI_RW_Reg(WRITE_REG+STATUS,0XFF);return revale;/*串口初始化*void StartUART( void )/ 波特率 4800SCON = 0x50;TMOD= 0x20;TH1 =0xFA;TL1 =0xFA;PCON= 0x00;TR1 = 1;* void R_S_Byte(uchar R_