51單片機對無線模塊nRF24L01簡單的控制收發程序

// Define SPI pins#include #define uchar unsigned char/***************************************************/#define TX_ADR_WIDTH   5  // 5字節寬度的發送/接收地址#define TX_PLOAD_WIDTH 4  // 數據通道有效數據寬度sbit LED = P2^1;sbit KEY1 = P3^1;sbit KEY2 = P3^2;uchar code TX_ADDRESS[TX_ADR_WIDTH] = {0x34,0x43,0x10,0x10,0x01};  // 定義一個靜態發送地址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);/**************************************************函數: init_io()描述:初始化IO/**************************************************/void init_io(void){CE  = 0;        // 待機CSN = 1;        // SPI禁止SCK = 0;        // SPI時鐘置低IRQ = 1;        // 中斷復位LED = 1;        // 關閉指示燈}/**************************************************//**************************************************函數：delay_ms()描述：延遲x毫秒/**************************************************/void delay_ms(uchar x){uchar i, j;i = 0;for(i=0; i射頻通道0x40SPI_RW_Reg(WRITE_REG + RX_PW_P0, TX_PLOAD_WIDTH);  // 接收通道0選擇和發送通道相同有效數據寬度SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07);            // 數據傳輸率1Mbps，發射功率0dBm，低噪聲放大器增益SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f);              // CRC使能，16位CRC校驗，上電，接收模式delay_ms(150);CE = 1;                                            // 拉高CE啟動接收設備}/**************************************************//**************************************************函數：TX_Mode()描述：這個函數設置nRF24L01為發送模式，（CE=1持續至少10us），130us后啟動發射，數據發送結束后，發送模塊自動轉入接收模式等待應答信號。/**************************************************/void TX_Mode(uchar * BUF){CE = 0;SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH);     // 寫入發送地址SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH);  // 為了應答接收設備，接收通道0地址和發送地址相同SPI_Write_Buf(WR_TX_PLOAD, BUF, TX_PLOAD_WIDTH);                  // 寫數據包到TX FIFOSPI_RW_Reg(WRITE_REG + EN_AA, 0x01);       // 使能接收通道0自動應答SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01);   // 使能接收通道0SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x0a);  // 自動重發延時等待250us+86us，自動重發10次SPI_RW_Reg(WRITE_REG + RF_CH, 40);         // 選擇射頻通道0x40SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07);    // 數據傳輸率1Mbps，發射功率0dBm，低噪聲放大器增益SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e);      // CRC使能，16位CRC校驗，上電delay_ms(150);CE = 1;}/**************************************************//**************************************************函數：Check_ACK()描述：檢查接收設備有無接收到數據包，設定沒有收到應答信號是否重發/**************************************************/uchar Check_ACK(bit clear){delay_ms(200);while(IRQ);sta = SPI_RW(NOP);                    // 返回狀態寄存器if(TX_DS){blink(3);}//blink(5);if(MAX_RT)if(clear)                         // 是否清除TX FIFO，沒有清除在復位MAX_RT中斷標志后重發SPI_RW(FLUSH_TX);SPI_RW_Reg(WRITE_REG + STATUS, sta);  // 清除TX_DS或MAX_RT中斷標志IRQ = 1;if(TX_DS)return(0x00);elsereturn(0xff);}/**************************************************//**************************************************函數：CheckButtons()描述：檢查按鍵是否按下，按下則發送一字節數據/**************************************************/void CheckButtons(){if(KEY1 == 0){delay_ms(20);if(KEY1 == 0){TX_BUF[0] = 1;          // 數據送到緩存//TX_BUF[0] = 0xff;          // 數據送到緩存TX_Mode(TX_BUF);            // 把nRF24L01設置為發送模式并發送數據            //LED = ~DATA;                // 數據送到LED顯示Check_ACK(0);               // 等待發送完畢，清除TX FIFOdelay_ms(250);delay_ms(250);}}if(KEY2 == 0){delay_ms(20);if(KEY2 == 0){TX_BUF[0] = 2;          // 數據送到緩存//TX_BUF[0] = 0xff;          // 數據送到緩存TX_Mode(TX_BUF);            // 把nRF24L01設置為發送模式并發送數據            //LED = ~DATA;                // 數據送到LED顯示Check_ACK(0);               // 等待發送完畢，清除TX FIFOdelay_ms(250);delay_ms(250);}}}/**************************************************/void blink(char i){while(i--){LED = 1;delay_ms(500);LED = 0;delay_ms(500);}}/**************************************************函數：main()描述：主函數/**************************************************/void main(void){init_io();                      // 初始化IOwhile(1){CheckButtons();           // 按鍵掃描}}

// Define SPI pins#include #include #define uchar unsigned char#define uint  unsigned int#define ulong unsigned long/***************************************************/#define TX_ADR_WIDTH   5  // 5字節寬度的發送/接收地址#define TX_PLOAD_WIDTH 4  // 數據通道有效數據寬度sbit LED = P2^1;uchar code TX_ADDRESS[TX_ADR_WIDTH] = {0x34,0x43,0x10,0x10,0x01};  // 定義一個靜態發送地址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 address//--定義SPI要使用的 IO--//sbit MOSIO = P3^4;sbit R_CLK = P3^5;sbit S_CLK = P3^6;void blink(char i);//--全局函數聲明--///**************************************************函數: init_io()描述:初始化IO/**************************************************/void init_io(void){CE  = 0;        // 待機CSN = 1;        // SPI禁止SCK = 0;        // SPI時鐘置低IRQ = 1;        // 中斷復位LED = 1;        // 關閉指示燈}/**************************************************//**************************************************函數：delay_ms()描述：延遲x毫秒/**************************************************/void delay_ms(uchar x){uchar i, j;i = 0;for(i=0; i