NRF24L01多路通讯调试成功的关键__附程序.doc

NRF24L01多路通讯调试成功的关键（附基于串口助手的无线通讯工具源代码）本文档部分内容摘自网络，由于按照网上教程调试总不成功，特此分享自己的失败经验（红字加重）。一、收发端共同的设置 1、设置信道工作频率（收发必须一致） 如：SPI_RW_Reg(WRITE_REG+RF_CH,40); 2、设置发射速率（2mbps或1mbps）和发射功率（收发必须一致）; 如：SPI_RW_Reg(WRITE_REG+RF_SETUP,0x0f); /发射速率为2Mbps，发射功率 最大为0dB 二、接收端的设置（最关键） 1、 设置频道0-5，自动ACK应答允许 如： SPI_RW_Reg(WRITE_REG+EN_AA,0x3f); 2、 设置接收通道全部允许 如： SPI_RW_Reg(WRITE_REG+EN_RXADDR,0x3f); 3、向发送地址寄存器写入本地地址（5byte） 4、向各个频道的接收地址寄存器写入接收地址（调试成不成功的关键） 频道0：5个字节的地址 频道1：5个字节的地址（和频道0的地址必须不同）频道2：1个字节的地址（为该通道发射机地址的最后一个字节） 有一个配置为发射模式的24l01要通过该通道与接收机通信，发射机的本地地址为0x37,0xa1,0xb3,0xc9,0xda；则接收机频道2的地址为（0x37） 频道3：1个字节的地址（同上） 频道4：1个字节的地址（同上） 频道5：1个字节的地址（同上） 5、向每个频道（用那个写那个，需要在上面配置允许通道接收和ack）接收数据长度寄存器写入接收数据宽度（最快均为32） 频道n：SPI_RW_Reg(WRITE_REG + RX_PW_Pn， RX_PLOAD_WIDTH); 如： 频道5：SPI_RW_Reg(WRITE_REG + RX_PW_P5， RX_PLOAD_WIDTH); 6、配置为接收模式 如：SPI_RW_Reg(WRITE_REG+CONFIG,0x0f);下面附上我的程序/*头文件*/#ifndef _NRF24L01_H_#define _NRF24L01_H_sbit CE = P12;sbit CSN = P13;sbit IRQ = P14;sbit MOSI = P15;sbit MISO = P16;sbit SCK = P17;void NRF24L01_init();/初始化模块uchar TX_packet(uchar *tx_buf);/返回值判断是否成功uchar RX_packet(uchar *rx_buf);/返回值判断是否成功void TX_MODE();/发送模式void RX_MODE();/接收模式/*/ SPI(nRF24L01) commands#define READ_REG 0x00 / Define read command to register#define WRITE_REG 0x20 / Define write command to register#define RD_RX_PLOAD 0x61 / Define RX payload register address#define WR_TX_PLOAD 0xA0 / Define TX payload register address#define FLUSH_TX 0xE1 / Define flush TX register command#define 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/*/#endif/*程序*/#include#includedefine.h#includeDELAY.h#includeNRF24L01.huchar code TX_ADDRESS5 = 0,1,1,1,1;uchar code RX_ADDRESS_P05 = 0,1,1,1,1;uchar code RX_ADDRESS_P15 = 1,1,1,1,1;uchar code RX_ADDRESS_P21 = 2;uchar code RX_ADDRESS_P31 = 3;uchar code RX_ADDRESS_P41 = 4;uchar code RX_ADDRESS_P51 = 5;uchar code Data_width = 1;uchar code Data_rt = 15;uchar SPI_RW(uchar dat) /SPI读写指令uchar i;for(i=0;i8;i+)SCK = 0;MOSI = (dat&0x80);dat = 1;SCK = 1;dat |= MISO; SCK = 0;return dat;uchar NRF24L01_read_reg(uchar reg)/读某个寄存器的状态uchar value;CSN=0; /拉低CSN，允许操作 SPI_RW(reg); /写寄存器指令value = SPI_RW(0); /读寄存器值CSN=1; /拉高CSN，禁止操作return value; /返回寄存器状态uchar NRF24L01_write_reg(uchar reg,uchar value) /写向某个寄存器写指令，并读出状态uchar status;CSN=0;/拉低CSN，允许操作 status = SPI_RW(reg);/写寄存器指令，并读出寄存器状态SPI_RW(value);/写寄存器值CSN=1;/拉高CSN，禁止操作return status;/返回寄存器之前的值uchar NRF24L01_read_buf(uchar reg,uchar *pbuf,uchar n) uchar i,status; CSN=0;/拉低CSN，允许操作 status = SPI_RW(reg);/写寄存器指令，并读出寄存器状态for(i=0;in;i+)pbufi = SPI_RW(0);/从寄存器读出一字节数据CSN = 1;/拉高CSN，禁止操作return status;uchar NRF24L01_write_buf(uchar reg,uchar *pbuf,uchar n) uchar i,status; CSN=0;/拉低CSN，允许操作 status = SPI_RW(reg);/写寄存器指令，并读出寄存器状态for(i=0;in;i+)SPI_RW(pbufi);/写一字节数据到寄存器CSN = 1;/拉高CSN，禁止操作return status; void NRF24L01_init()CE = 0; /射频电路工作使能，高电平工作，低电平停止CSN = 1; /SPI操作高电平允许，低电平禁止SCK = 0; /时钟拉低，禁止读写寄存器IRQ = 1; /中断复位，等待产生中断信号NRF24L01_write_reg(WRITE_REG + EN_AA, 0x3f); /所有接受通道允许自动应答NRF24L01_write_reg(WRITE_REG + EN_RXADDR, 0x3f); /接收通道全部打开NRF24L01_write_reg(WRITE_REG + SETUP_AW, 0x03); /设置接收/发射地址宽度为5字节NRF24L01_write_reg(WRITE_REG + SETUP_RETR, Data_rt);/自动发送间隔250+86us，次数15NRF24L01_write_reg(WRITE_REG + RF_CH, 0x00); /设置信道工作为2.4Ghz，收发必须一致NRF24L01_write_reg(WRITE_REG + RX_PW_P0, Data_width);/设置通道0数据字节数NRF24L01_write_reg(WRITE_REG + RX_PW_P1, Data_width);/设置通道1数据字节数NRF24L01_write_reg(WRITE_REG + RX_PW_P2, Data_width);/设置通道2数据字节数NRF24L01_write_reg(WRITE_REG + RX_PW_P3, Data_width);/设置通道3数据字节数NRF24L01_write_reg(WRITE_REG + RX_PW_P4, Data_width);/设置通道4数据字节数NRF24L01_write_reg(WRITE_REG + RX_PW_P5, Data_width);/设置通道5数据字节数NRF24L01_write_reg(WRITE_REG + RF_SETUP, 0x0f); /发送速率为1Mhz，发送功率最大值0dbNRF24L01_write_buf(WRITE_REG + TX_ADDR,TX_ADDRESS,5);/写本机地地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P0,RX_ADDRESS_P0,5);/写数据通道0接收机地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P1,RX_ADDRESS_P1,5);/写数据通道1接收机地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P2,RX_ADDRESS_P2,1); /写数据通道2接收机地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P3,RX_ADDRESS_P3,1); /写数据通道3接收机地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P4,RX_ADDRESS_P4,1); /写数据通道4接收机地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P5,RX_ADDRESS_P5,1); /写数据通道5接收机地址 void RX_MODE()NRF24L01_write_reg(WRITE_REG + CONFIG, 0x0f);/IRQ收发完成中断响应，16位CRC，接收模式 CE = 1;void TX_MODE()NRF24L