51单片机对无线模块nRF24L01简单的控制收发程序
时间:11-19
来源:互联网
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它的一些物理特性如工作频段、供电电压、数据传输速率就不详细介绍了,直接上代码。
1.首先是发送端:
// Define SPI pins#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 4 // 数据通道有效数据宽度sbit LED = P2^1;sbit KEY1 = P3^1;sbit KEY2 = P3^2;uchar code TX_ADDRESS[TX_ADR_WIDTH] = {0x34,0x43,0x10,0x10,0x01}; // 定义一个静态发送地址uchar RX_BUF[TX_PLOAD_WIDTH];uchar TX_BUF[TX_PLOAD_WIDTH];uchar flag;uchar DATA = 0x01;uchar bdata sta;sbit RX_DR = sta^6;sbit TX_DS = sta^5;sbit MAX_RT = sta^4;sbit CE = P1^5;sbit CSN= P1^4;sbit SCK= P1^3;sbit MOSI= P1^2;sbit MISO= P1^1;sbit IRQ = P1^0;// 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 addressvoid blink(char i);/**************************************************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 = 1; // 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; i 射频通道0x40SPI_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SPI_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_R
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