nRF24L01无线模块6个接收通道接收_24L01_51_7多对一.doc

一共三个文件Main.c文件#include nRF24L01.h/*函数：main()描述： 主函数/*/void main(void) EX0=1;IT0=1;EA=1;init_io(); / 初始化IOStartUART();Init_24L01();R_S_Byte(2);TX_Mode(TX_BUF);/ 把nRF24L01设置为发送模式并发送数据Check_ACK(1); / 等待发送完毕，清除TX FIFOdelay_ms(250);delay_ms(250);RX_Mode(); / 设置为接收模式while(1)CheckButtons(); / 按键扫描nRF24L01.c文件#includenRF24L01.huchar code TX_ADDRESSTX_ADR_WIDTH = 0xb1,0xb2,0xb3,0xb4,0x01;/0x34,0x43,0x10,0x10,0x01; / 路由节点地址uchar code RX_ADDRESS1TX_ADR_WIDTH = 0xb0,0xb2,0xb3,0xb4,0x01;/写地址寄存器是先写低字节，因此后面几个字节相同uchar code RX_ADDRESS21 = 0xb1;uchar code RX_ADDRESS31 = 0xb2;uchar code RX_ADDRESS41 = 0xb3;uchar code RX_ADDRESS51 = 0xb4;uchar RX_BUFTX_PLOAD_WIDTH;uchar TX_BUFTX_PLOAD_WIDTH=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,;uchar flag,status;uchar DATA = 0x01;uchar bdata sta;sbit RX_DR = sta6;sbit TX_DS = sta5;sbit MAX_RT = sta4;/*/*函数: init_io()描述: 初始化IO/*/void init_io(void)CE = 0; / 待机CSN = 1; / SPI禁止SCK = 0; / SPI时钟置低IRQ = 1; / 中断复位LED = 0x00;/ 关闭指示灯/*/*函数：delay_ms()描述： 延迟x毫秒/*/void delay_ms(uchar x) uchar i, j; i = 0; for(i=0; i0;n-)_nop_();/*函数：SPI_RW()描述： 根据SPI协议，写一字节数据到nRF24L01，同时从nRF24L01读出一字节/*/uchar SPI_RW(uchar byte)uchar i; for(i=0; i8; i+) / 循环8次 MOSI = (byte & 0x80); / byte最高位输出到MOSI byte = 1; / 低一位移位到最高位 SCK = 1; / 拉高SCK，nRF24L01从MOSI读入1位数据，同时从MISO输出1位数据 byte |= MISO; / 读MISO到byte最低位 SCK = 0; / SCK置低 return(byte); / 返回读出的一字节/*/*函数：SPI_RW_Reg()描述： 写数据value到reg寄存器/*/uchar SPI_RW_Reg(uchar reg, uchar value)uchar status; CSN = 0; / CSN置低，开始传输数据 status = SPI_RW(reg); / 选择寄存器，同时返回状态字 SPI_RW(value); / 然后写数据到该寄存器 CSN = 1; / CSN拉高，结束数据传输 return(status); / 返回状态寄存器/*/*函数：SPI_Read()描述： 从reg寄存器读一字节/*/uchar SPI_Read(uchar reg)uchar reg_val; CSN = 0; / CSN置低，开始传输数据 SPI_RW(reg); / 选择寄存器 reg_val = SPI_RW(0); / 然后从该寄存器读数据 CSN = 1; / CSN拉高，结束数据传输 return(reg_val); / 返回寄存器数据/*/*函数：SPI_Read_Buf()描述： 从reg寄存器读出bytes个字节，通常用来读取接收通道数据或接收/发送地址/*/uchar SPI_Read_Buf(uchar reg, uchar * pBuf, uchar bytes)uchar status, i; CSN = 0; / CSN置低，开始传输数据 status = SPI_RW(reg); / 选择寄存器，同时返回状态字 for(i=0; ibytes; i+) pBufi = SPI_RW(0); / 逐个字节从nRF24L01读出 CSN = 1; / CSN拉高，结束数据传输 return(status); / 返回状态寄存器/*/*函数：SPI_Write_Buf()描述： 把pBuf缓存中的数据写入到nRF24L01，通常用来写入发射通道数据或接收/发送地址/*/uchar SPI_Write_Buf(uchar reg, uchar * pBuf, uchar bytes)uchar status, i; CSN = 0; / CSN置低，开始传输数据 status = SPI_RW(reg); / 选择寄存器，同时返回状态字 for(i=0; ibytes; i+) SPI_RW(pBufi); / 逐个字节写入nRF24L01 CSN = 1; / CSN拉高，结束数据传输 return(status); / 返回状态寄存器/*/*函数：RX_Mode()描述： 这个函数设置nRF24L01为接收模式，等待接收发送设备的数据包/*/void RX_Mode(void)CE = 0; SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); / CRC使能，16位CRC校验，上电，接收模式 CE = 1; / 拉高CE启动接收设备inerDelay_us(130);/*/*函数：TX_Mode()描述： 这个函数设置nRF24L01为发送模式，（CE=1持续至少10us），130us后启动发射，数据发送结束后，发送模块自动转入接收模式等待应答信号。/*/void TX_Mode(uchar * BUF)CE = 0; SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); / 写入发送地址 SPI_Write_Buf(WR_TX_PLOAD, BUF, TX_PLOAD_WIDTH); / 写数据包到TX FIFOCE = 1;inerDelay_us(10);/*/*函数：Check_ACK()描述： 检查接收设备有无接收到数据包，设定没有收到应答信号是否重发/*/uchar Check_ACK(bit clear)while(IRQ);sta = SPI_RW(NOP); / 返回状态寄存器if(MAX_RT)if(clear) / 是否清除TX FIFO，没有清除在复位MAX_RT中断标志后重发SPI_RW(FLUSH_TX);SPI_RW_Reg(WRITE_REG + STATUS, sta); / 清除TX_DS或MAX_RT中断标志IRQ = 1;if(TX_DS)return(0x00);elsereturn(0xff);/*/*函数：CheckButtons()描述： 检查按键是否按下，按下则发送一字节数据/*/void CheckButtons()uchar i=0;if(flag) / 接受完成flag = 0; / 清标志R_S_Byte(N);R_S_Byte(status);for(i=0;i=1;SPI_Read_Buf(RD_RX_PLOAD, RX_BUF, TX_PLOAD_WIDTH); / 从RX FIFO读出数据flag = 1;SPI_RW_Reg(WRITE_REG + STATUS, sta); / 清除RX_DS中断标志/*/ nRF24L01初始化/*/void Init_24L01()CE=0;SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH);/写接收通道0的接收地址，与发送地址相同SPI_Write_Buf(WRITE_REG + RX_ADDR_P1, RX_ADDRESS1, TX_ADR_WIDTH); /写接收通道1的接收地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P2, RX_ADDRESS2, 1);/写接收通道2的接收地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P3, RX_ADDRESS3, 1);/写接收通道3的接收地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P4, RX_ADDRESS4, 1);/写接收通道4的接收地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P5, RX_ADDRESS5, 1);/写接收通道5的接收地址SPI_RW_Reg(WRITE_REG + RX_PW_P0, TX_PLOAD_WIDTH); / 接收通道0选择和发送通道相同有效数据宽度，32字节长度 SPI_RW_Reg(WRITE_REG + RX_PW_P1, TX_PLOAD_WIDTH);/32字节长度 SPI_RW_Reg(WRITE_REG + RX_PW_P2, TX_PLOAD_WIDTH);/32字节长度 SPI_RW_Reg(WRITE_REG + RX_PW_P3, TX_PLOAD_WIDTH);/32字节长度 SPI_RW_Reg(WRITE_REG + RX_PW_P4, TX_PLOAD_WIDTH);/32字节长度 SPI_RW_Reg(WRITE_REG + RX_PW_P5, TX_PLOAD_WIDTH);/32字节长度 SPI_RW_Reg(WRITE_REG + EN_AA, 0x3f); / 使能所有接收通道自动应答 SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x3f); / 使能所有接收通道SPI_RW_Reg(WRITE_REG + RF_CH, 40); / 选择射频通道0x40SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); / 数据传输率1Mbps，发射功率0dBm，低噪声放大器增益SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); / CRC使能，16位CRC校验，上电SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x0a); / 自动重发延时等待250us+86us，自动重发10次CE=1;nRF24L01.h文件#ifndef _API_DEF_#define _API_DEF_#include #include #define uchar unsigned char/*/#define TX_ADR_WIDTH 5 / 5字节宽度的发送/接收地址#define TX_PLOAD_WIDTH 32 / 数据通道有效数据宽度#define LED P1extern uchar RX_BUFTX_PLOAD_WIDTH;extern uchar TX_BUFTX_PLOAD_WIDTH;/*/ Define SPI pinssbit CE = P20; / Chip Enable pin signal (output)sbit CSN = P21; / Slave Select pin, (output to CSN, nRF24L01)sbit IRQ = P32; / Interrupt signal, from nRF24L01 (input)sbit MISO = P24; / Master In, Slave Out pin (input)sbit MOSI = P25; / Serial Clock pin, (output)sbit SCK = P27; / Master Out, Slave In pin (output)/ 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 / 频道0接收数据地址#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 / 接收频道0接收数据长度#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 paylo