arduino+STC89C52RC+nRF24L01制作远程测温系统

以下是其发送和接受的源代码,供有意向的人使用:

STC89C52RC发送代码#include reg52.h>#include intrins.h>typedef unsigned char uchar;typedef unsigned char uint;//****************************************IO端口定义sbit MISO =P1^2;sbit MOSI =P3^2;sbit SCK =P1^6;sbit CE =P1^5;sbit CSN =P1^7;sbit IRQ =P1^3;　　　　//实际上该端口并未使用//*****************************************DS1820端口设置sbit DQ=P2^7 ;//************************************数码管位选sbit led3=P2^0;sbit led2=P2^1;sbit led1=P2^2;sbit led0=P2^3;//***********************************数码管0-9编码uchar seg[10]=

{0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};

//0~9段码(采用共阴四位数码管)uchar seg1[10]={0xBF,0x86,0xcD4,0xCF,0xE6,0xED,0xFD,0x87,0xFF,0xEF};

//加上小数点点后的段码uchar data temp_data[2]={0x00,0x00}; //温度采集数据缓冲区uchar display[7]; //显示缓冲区//uint bdata sta; //NRF24L01状态标志sbit RX_DR =sta^6; sbit TX_DS =sta^5;sbit MAX_RT =sta^4;//******NRF24L01#define TX_ADR_WIDTH 5 // 本机地址宽度设置#define RX_ADR_WIDTH 5 // 接收方地址宽度设置#define TX_PLOAD_WIDTH 16 // 16 字节数据长度#define RX_PLOAD_WIDTH 16 // 16 字节数据长度uint const TX_ADDRESS[TX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //本地地址uint const RX_ADDRESS[RX_ADR_WIDTH]= {0x34,0x43,0x10,0x10,0x01}; //接收地址//*****************************NRF24L01寄存器指令，详细请对照，Page18#define READ_REG 0x00 // 读寄存器指令#define WRITE_REG 0x20 // 写寄存器指令#define RD_RX_PLOAD 0x61 // 读取接收数据指令#define WR_TX_PLOAD 0xA0 // 写待发数据指令#define FLUSH_TX 0xE1 // 冲洗发送 FIFO指令#define FLUSH_RX 0xE2 // 冲洗接收 FIFO指令#define REUSE_TX_PL 0xE3 // 定义重复装载数据指令#define NOP 0xFF // 保留//****************************SPI(nRF24L01)寄存器地址，详细请对照，Page18-24#define CONFIG 0x00 // 配置收发状态，CRC校验模式以及收发状态响应方式#define EN_AA 0x01 // 自动应答功能设置#define EN_RXADDR 0x02 // 可用信道设置#define SETUP_AW 0x03 // 收发地址宽度设置#define SETUP_RETR 0x04 // 自动重发功能设置#define RF_CH 0x05 // 工作频率设置#define RF_SETUP 0x06 // 发射速率、功耗功能设置#define STATUS 0x07 // 状态寄存器#define OBSERVE_TX 0x08 // 发送监测功能#define CD 0x09 // 地址检测 #define RX_ADDR_P0 0x0A // 频道0接收数据地址#define RX_ADDR_P1 0x0B // 频道1接收数据地址#define RX_ADDR_P2 0x0C // 频道2接收数据地址#define RX_ADDR_P3 0x0D // 频道3接收数据地址#define RX_ADDR_P4 0x0E // 频道4接收数据地址#define RX_ADDR_P5 0x0F // 频道5接收数据地址#define TX_ADDR 0x10 // 发送地址寄存器#define RX_PW_P0 0x11 // 接收频道0接收数据长度#define RX_PW_P1 0x12 // 接收频道0接收数据长度#define RX_PW_P2 0x13 // 接收频道0接收数据长度#define RX_PW_P3 0x14 // 接收频道0接收数据长度#define RX_PW_P4 0x15 // 接收频道0接收数据长度#define RX_PW_P5 0x16 // 接收频道0接收数据长度#define FIFO_STATUS 0x17 // FIFO栈入栈出状态寄存器设置//************************************NRF24L01函数申明void Delay(unsigned int s);void inerDelay_us(unsigned char n);void init_NRF24L01(void);uint SPI_RW(uint uchar);uchar SPI_Read(uchar reg);void SetRX_Mode(void);uint SPI_RW_Reg(uchar reg, uchar value);uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars);uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars);unsigned charnRF24L01_RxPacket(unsigned char* rx_buf);voidnRF24L01_TxPacket(unsigned char * tx_buf);//************************************DS18B20函数申明void delay1(uint i);void ds_reset(void);void write_byte(uchar value);uchar read_byte(void);void read_temp();void work_temp();//*****************************************长延时void Delay(unsigned int s){unsigned int i;for(i=0; is; i++);for(i=0; is; i++);}//*延时函数/void inerDelay_us(unsigned char n){for(;n>0;n--)_nop_();}///*NRF24L01初始化//void init_NRF24L01(void){inerDelay_us(100);CE=0; CSN=1; SCK=0; SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH);

// 写本地地址 SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH);

// 写接收端地址SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH);

//设置接收数据长度，本次设置为4字节SPI_RW_Reg(WRITE_REG + RX_PW_P1, RX_PLOAD_WIDTH);

//设置接收数据长度，本次设置为4字节}//*函数：uint SPI_RW(uint uchar)/*功能：NRF24L01的SPI写时序,详细看时序图，Page19/uint SPI_RW(uint uchar){uint bit_ctr;for(bit_ctr=0;bit_ctr8;bit_ctr++) // output 8-bit{MOSI = (uchar 0x80); // output 'uchar', MSB to MOSIuchar = (uchar 1); // shift next bit into MSB..SCK = 1; // Set SCK high..uchar |= MISO; // capture current MISO bitSCK = 0; // ..then set SCK low again}return(uchar); // return read uchar}//*函数：uchar SPI_Read(uchar reg)/*功能：NRF24L01的SPI时序,详细看时序图，Page19/uchar SPI_Read(uchar reg){uchar reg_val;CSN = 0; // CSN low, initialize SPI communication...SPI_RW(reg); // Select register to read from..reg_val = SPI_RW(0); // ..then read registervalueCSN = 1; // CSN high, terminate SPI communicationreturn(reg_val); // return register value}//*功能：NRF24L01读写寄存器函数,/uint SPI_RW_Reg(uchar reg, uchar value){uint status;CSN = 0; // CSN low, init SPI transactionstatus = SPI_RW(reg); // select registerSPI_RW(value); // ..and write value to it..CSN = 1; // CSN high againreturn(status); // return nRF24L01 status uchar}//*函数：uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars)/*功能: 用于读数据，reg：为寄存器地址，pBuf：为待读出数据地址，uchars：读出数据的个数/uint SPI_Read_Buf(uchar reg, uchar *pBuf, uchar uchars){uint status,uchar_ctr;CSN = 0; // Set CSN low, init SPI tranactionstatus = SPI_RW(reg);

// Select register to write to and read status ucharfor(uchar_ctr=0;uchar_ctruchars;uchar_ctr++)pBuf[uchar_ctr] = SPI_RW(0); //CSN = 1; return(status); // return nRF24L01 status uchar}//*功能: 用于写数据：为寄存器地址，pBuf：为待写入数据地址，uchars：写入数据的个数/uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars){uint status,uchar_ctr;CSN = 0; //SPI使能 status = SPI_RW(reg); for(uchar_ctr=0; uchar_ctruchars; uchar_ctr++) //SPI_RW(*pBuf++);CSN = 1; //关闭SPIreturn(status); //}//*功能：发送 tx_buf中数据/void nRF24L01_TxPacket(unsigned char * tx_buf){CE=0; //StandBy I模式 SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH);

// 装载接收端地址SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 装载数据 SPI_RW_Reg(WRITE_REG + CONFIG, 0x0A);

// IRQ收发完成中断响应，8位CRC，主发送CE=1; //置高CE，激发数据发送inerDelay_us(10);}//void delay1(uint i){for(;i>0;i--); }//***********************DS1820复位函数void ds_reset(void){char temp=1;while(temp){while(temp){DQ=1;_nop_();_nop_();DQ=0;delay1(80);DQ=1;delay1(9);temp=DQ;}delay1(64);temp=~DQ; }DQ=1;}//**************DS1820写函数void write_byte(uchar value){uchar i;for(i=8;i>0;i--){DQ=1;_nop_();_nop_();DQ=0;_nop_();_nop_();_nop_();_nop_();_nop_();DQ=value0x01;delay1(9);value>>=1;}DQ=1;delay1(1);}//****************DS1820读函数

uchar read_byte(void){uchar i;uchar value1=0;for(i=8;i>0;i--){DQ=1;_nop_();_nop_();value1>>=1;DQ=0;_nop_();_nop_();_nop_();_nop_();DQ=1;_nop_();_nop_();_nop_();_nop_();if(DQ)value1|=0x80;delay1(9);}DQ=1;return(value1);}//****************读取温度void read_temp(){ds_reset();write_byte(0xcc);write_byte(0xbe);temp_data[0]=read_byte();temp_data[1]=read_byte();ds_reset();write_byte(0xcc);write_byte(0x44);//*****************温度处理void work_temp(){uchar n=0;if(temp_data[1]>127){temp_data[1]=(256-temp_data[1]); //负值temp_data[0]=(256-temp_data[0]);n=1;}display[6]=((temp_data[0]0xf0)>>4)|((temp_data[1]0x0f)4);display[5]=display[6]/100; //百位display[4]=display[6]%100; //display[2]=display[4]/10; //十位display[1]=display[4]%10; //个位 switch (temp_data[0]0x0f) //小数位{case 0x0f:display[0]=9;break;case 0x0e:display[0]=9;break;case 0x0d:display[0]=8;break;case 0x0c:display[0]=8;break;case 0x0b:display[0]=7;break;case 0x0a:display[0]=6;break;case 0x09:display[0]=6;break;case 0x08:display[0]=5;break;case 0x07:display[0]=4;break;case 0x06:display[0]=4;break;case 0x05:display[0]=3;break;case 0x04:display[0]=3;break;case 0x03:display[0]=2;break;case 0x02:display[0]=1;break;case 0x01:display[0]=1;break;case 0x00:display[0]=1;break;default:break;}if(n) //负值时显示aa,正直显示dd{display[3]=0x11; }else display[3]=0x22;}//**********温度显示void disdignit(){P0=0x39;led0=0;delay1(40);led0=1;P0=seg[display[0]];led1=0;delay1(40);led1=1;P0=seg1[display[1]];led2=0;delay1(40);led2=1;P0=seg[display[2]];led3=0;delay1(40);led3=1;}//*************主函数void main(void){uchar i=0;init_NRF24L01() ; //NRF24L01初始化配置ds_reset();write_byte(0xcc);write_byte(0x44);Delay(6000);while(1){if(i==3){i=0;read_temp();work_temp();delay1(500);}i++;disdignit();nRF24L01_TxPacket(display);SPI_RW_Reg(WRITE_REG+STATUS,0XFF); }}arduino接收代码/*** An Mirf example which copies back the data it recives.** Pins:* Hardware SPI:* MISO -> 12* MOSI -> 11* SCK -> 13** Configurable:* CE -> 8* CSN -> 7**/#include Spi.h>#include mirf.h>#include nRF24L01.h>void setup(){Serial.begin(9600);Mirf.init();unsigned char rx_addr[5] = {0x34,0x43,0x10,0x10,0x01 };Mirf.setRADDR(rx_addr);Mirf.payload = 16;Mirf.channel = 2;Mirf.config();Serial.print("channel=");Serial.println(Mirf.channel,DEC);Serial.print("payload=");Serial.println(Mirf.payload,DEC);for(int i=0;i5;i++){Serial.print("addr[");Serial.print(i);Serial.print("]=");Serial.println(rx_addr[i],HEX);}Serial.println("Listening...");}void loop(){byte data[Mirf.payload];if(Mirf.dataReady()){do{Mirf.getData(data);Serial.print("temp: ");Serial.print(data[2],DEC);Serial.print(data[1],DEC);Serial.print(".");Serial.println(data[0],DEC);}while(!Mirf.rxFifoEmpty());}}

函数中的缓冲区实际上只使用8个字节,所以可以将arduino中的payload改为8,C51单片机中的TX_PLOAD_WIDTH改为8就能避免传输数据的浪费.