1、NRF24L01多路通訊調試成功的關鍵（附基于串口助手的無線通訊工具源代碼）本文檔部分內容摘自網絡，由于按照網上教程調試總不成功，特此分享自己的失敗經驗（紅字加重）。一、收發端共同的設置 1、設置信道工作頻率（收發必須一致） 如：SPI_RW_Reg(WRITE_REG+RF_CH,40); 2、設置發射速率（2mbps或1mbps）和發射功率（收發必須一致）; 如：SPI_RW_Reg(WRITE_REG+RF_SETUP,0x0f); /發射速率為2Mbps，發射功率 最大為0dB 二、接收端的設置（最關鍵） 1、 設置頻道0-5，自動ACK應答允許 如： SPI_RW_Reg(WRITE

2、_REG+EN_AA,0x3f); 2、 設置接收通道全部允許 如： SPI_RW_Reg(WRITE_REG+EN_RXADDR,0x3f); 3、向發送地址寄存器寫入本地地址（5byte） 4、向各個頻道的接收地址寄存器寫入接收地址（調試成不成功的關鍵） 頻道0：5個字節的地址 頻道1：5個字節的地址（和頻道0的地址必須不同）頻道2：1個字節的地址（為該通道發射機地址的最后一個字節） 有一個配置為發射模式的24l01要通過該通道與接收機通信，發射機的本地地址為0x37,0xa1,0xb3,0xc9,0xda；則接收機頻道2的地址為（0x37） 頻道3：1個字節的地址（同上） 頻道4：1個字

3、節的地址（同上） 頻道5：1個字節的地址（同上） 5、向每個頻道（用那個寫那個，需要在上面配置允許通道接收和ack）接收數據長度寄存器寫入接收數據寬度（最快均為32） 頻道n：SPI_RW_Reg(WRITE_REG + RX_PW_Pn， RX_PLOAD_WIDTH); 如： 頻道5：SPI_RW_Reg(WRITE_REG + RX_PW_P5， RX_PLOAD_WIDTH); 6、配置為接收模式 如：SPI_RW_Reg(WRITE_REG+CONFIG,0x0f);下面附上我的程序/*頭文件*/#ifndef _NRF24L01_H_#define _NRF24L01_H_sbit

4、 CE = P12;sbit CSN = P13;sbit IRQ = P14;sbit MOSI = P15;sbit MISO = P16;sbit SCK = P17;void NRF24L01_init();/初始化模塊uchar TX_packet(uchar *tx_buf);/返回值判斷是否成功uchar RX_packet(uchar *rx_buf);/返回值判斷是否成功void TX_MODE();/發送模式void RX_MODE();/接收模式/*/ SPI(nRF24L01) commands#define READ_REG 0x00 / Define read co

5、mmand 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

6、 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#

7、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

8、/ 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 add

9、ress#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#defi

10、ne 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 r

11、egister 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 co

12、de 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讀寫指令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)/讀某個寄存

13、器的狀態uchar value;CSN=0; /拉低CSN，允許操作 SPI_RW(reg); /寫寄存器指令value = SPI_RW(0); /讀寄存器值CSN=1; /拉高CSN，禁止操作return value; /返回寄存器狀態uchar NRF24L01_write_reg(uchar reg,uchar value) /寫向某個寄存器寫指令，并讀出狀態uchar status;CSN=0;/拉低CSN，允許操作 status = SPI_RW(reg);/寫寄存器指令，并讀出寄存器狀態SPI_RW(value);/寫寄存器值CSN=1;/拉高CSN，禁止操作return sta

14、tus;/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，允許操作 status = SPI_RW(reg);/寫寄存器指令，并讀出寄存器狀態for(i=0;in;i+)pbufi = SPI_RW(0);/從寄存器讀出一字節數據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CS

15、N，允許操作 status = SPI_RW(reg);/寫寄存器指令，并讀出寄存器狀態for(i=0;in;i+)SPI_RW(pbufi);/寫一字節數據到寄存器CSN = 1;/拉高CSN，禁止操作return status; void NRF24L01_init()CE = 0; /射頻電路工作使能，高電平工作，低電平停止CSN = 1; /SPI操作高電平允許，低電平禁止SCK = 0; /時鐘拉低，禁止讀寫寄存器IRQ = 1; /中斷復位，等待產生中斷信號NRF24L01_write_reg(WRITE_REG + EN_AA, 0x3f); /所有接受通道允許自動應答NRF24

16、L01_write_reg(WRITE_REG + EN_RXADDR, 0x3f); /接收通道全部打開NRF24L01_write_reg(WRITE_REG + SETUP_AW, 0x03); /設置接收/發射地址寬度為5字節NRF24L01_write_reg(WRITE_REG + SETUP_RETR, Data_rt);/自動發送間隔250+86us，次數15NRF24L01_write_reg(WRITE_REG + RF_CH, 0x00); /設置信道工作為2.4Ghz，收發必須一致NRF24L01_write_reg(WRITE_REG + RX_PW_P0, Data

17、_width);/設置通道0數據字節數NRF24L01_write_reg(WRITE_REG + RX_PW_P1, Data_width);/設置通道1數據字節數NRF24L01_write_reg(WRITE_REG + RX_PW_P2, Data_width);/設置通道2數據字節數NRF24L01_write_reg(WRITE_REG + RX_PW_P3, Data_width);/設置通道3數據字節數NRF24L01_write_reg(WRITE_REG + RX_PW_P4, Data_width);/設置通道4數據字節數NRF24L01_write_reg(WRITE_

18、REG + RX_PW_P5, Data_width);/設置通道5數據字節數NRF24L01_write_reg(WRITE_REG + RF_SETUP, 0x0f); /發送速率為1Mhz，發送功率最大值0dbNRF24L01_write_buf(WRITE_REG + TX_ADDR,TX_ADDRESS,5);/寫本機地地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P0,RX_ADDRESS_P0,5);/寫數據通道0接收機地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P1,RX_ADDRESS_P1,5);/寫

19、數據通道1接收機地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P2,RX_ADDRESS_P2,1); /寫數據通道2接收機地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P3,RX_ADDRESS_P3,1); /寫數據通道3接收機地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P4,RX_ADDRESS_P4,1); /寫數據通道4接收機地址NRF24L01_write_buf(WRITE_REG + RX_ADDR_P5,RX_ADDRESS_P5,1); /寫數據通道5接收機地址 void RX_MODE()NRF24L01_write_reg(WRITE_REG + CONFIG, 0x0f);/IRQ收發完成中斷響應，16位CRC，接收模式 CE = 1;void TX_MODE()NRF24L