基于NRF24L01+溫度無線傳輸51單片機

1、溫度無線傳輸南陽理工 周渴望 本次所做是基于2.4GNRF24L01+芯片的溫度的無線傳輸，甲機作為發(fā)射機有DS18B20溫度傳感器、LCD1602液晶和NRE24L01+2.4G無線傳輸芯片。乙機作為接收端有LCD1602液晶和NRE24L01+2.4G無線傳輸芯片。甲機和乙機在硬件上是完全分開的。工作過程：甲機將溫度檢測出來并顯示在液晶上，然后通過NRF24L01將溫度數(shù)據(jù)發(fā)送出去，然后乙機通過本機上的NRF24L01芯片將甲機發(fā)射的程序接手過來通過單片機處理顯示在本機液晶上面。實物圖引腳圖程序：注：本次程序基于之前所做“1602LCD液晶顯示DS18B20溫度”程序。發(fā)射端#includ

2、e #include #define uchar unsigned char#define uint unsigned int/* sbit ds18b20=P23; /定義DS18B20的數(shù)據(jù)引腳 bit crrent=1; /定義DS18B20初始化返回值，表示初始化是否成功sbit BEE=P35; sbit AD=P25;sbit DC=P27;sbit lcdrs=P20; /定義LCD引腳sbit lcdrw=P21;sbit lcden=P22; sbit LED=P10;uint HT=340;uint value=0;uchar code str=Tempe:;uchar c

3、ode str1=DS18B20 Error!;uchar code str2=Please Check;uchar tflag; / 是否正負uchar data disdat6;uchar data setdat4;void writelcdcmd(uchar);void writelcddat(uchar);/*#define TX_ADR_WIDTH 5 / 發(fā)射地址的字節(jié)個數(shù)#define TX_PLOAD_WIDTH 2 /發(fā)射字節(jié)uchar const TX_ADDRESSTX_ADR_WIDTH=0x34,0x55,0x10,0x10,0x01; uchar rx_bufTX_

4、PLOAD_WIDTH;uchar tx_bufTX_PLOAD_WIDTH;uchar distance_data2;uchar flag;/標志sbit CE=P10;/發(fā)射高電平大于10MS 接收高電平 sbit CSN=P11;/低電平ISP使能sbit SCK=P12; /下降沿sbit MOSI=P13;/MCU出sbit MISO=P14;/MCU入sbit IRQ=P15;/中斷uchar bdata sta;sbitRX_DR=sta6; /接收數(shù)據(jù)準備就緒sbitTX_DS=sta5; /已發(fā)送數(shù)據(jù)sbitMAX_RT=sta4;sbit DQ=P23;unsigned c

5、har time; /設(shè)置全局變量，專門用于嚴格延時/*NRF24L01*/*NRF24L01寄存器指令*#define READ_REG 0x00 / 讀寄存器指令#define WRITE_REG 0x20 / 寫寄存器指令#define RD_RX_PLOAD 0x61 / 讀取接收數(shù)據(jù)指令#define WR_TX_PLOAD 0xA0 / 寫待發(fā)數(shù)據(jù)指令#define FLUSH_TX 0xE1 / 沖洗發(fā)送 FIFO指令#define FLUSH_RX 0xE2 / 沖洗接收 FIFO指令#define REUSE_TX_PL 0xE3 / 定義重復(fù)裝載數(shù)據(jù)指令#define NO

6、P 0xFF / 保留/*SPI(nRF24L01)寄存器地址*#define CONFIG 0x00 / 配置收發(fā)狀態(tài)，CRC校驗?zāi)Ｊ揭约笆瞻l(fā)狀態(tài)響應(yīng)方式#define EN_AA 0x01 / 自動應(yīng)答功能設(shè)置#define EN_RXADDR 0x02 / 可用信道設(shè)置#define SETUP_AW 0x03 / 收發(fā)地址寬度設(shè)置#define SETUP_RETR 0x04 / 自動重發(fā)功能設(shè)置#define RF_CH 0x05 / 工作頻率設(shè)置#define RF_SETUP 0x06 / 發(fā)射速率、功耗功能設(shè)置#define STATUS 0x07 / 狀態(tài)寄存器#define

7、 OBSERVE_TX 0x08 / 發(fā)送監(jiān)測功能#define CD 0x09 / 地址檢測 #define RX_ADDR_P0 0x0A / 頻道0接收數(shù)據(jù)地址#define RX_ADDR_P1 0x0B / 頻道1接收數(shù)據(jù)地址#define RX_ADDR_P2 0x0C / 頻道2接收數(shù)據(jù)地址#define RX_ADDR_P3 0x0D / 頻道3接收數(shù)據(jù)地址#define RX_ADDR_P4 0x0E / 頻道4接收數(shù)據(jù)地址#define RX_ADDR_P5 0x0F / 頻道5接收數(shù)據(jù)地址#define TX_ADDR 0x10 / 發(fā)送地址寄存器#define RX_P

8、W_P0 0x11 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P1 0x12 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P2 0x13 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P3 0x14 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P4 0x15 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P5 0x16 / 接收頻道0接收數(shù)據(jù)長度#define FIFO_STATUS 0x17 / FIFO棧入棧出狀態(tài)寄存器設(shè)置/*void init_io(void)CE=0;CSN=1;SCK=0;void delay_ms(unsigned

9、int x) unsigned int i,j; for(i=0;ix;i+) j=108; while(j-); uchar SPI_RW(uchar byte)/發(fā)送指令，接受狀態(tài) ，返回值為狀態(tài)值uchar bit_ctr; for(bit_ctr=0;bit_ctr8;bit_ctr+) MOSI = (byte&0x80); byte = (byte1); SCK = 1; byte|=MISO; SCK=0; return(byte); uchar SPI_RW_Reg(uchar reg, uchar value)uchar status; CSN = 0; status = S

10、PI_RW(reg); SPI_RW(value); CSN = 1; return(status); uchar SPI_Read(uchar reg)uchar reg_val; CSN = 0; SPI_RW(reg); /寫指令 reg_val = SPI_RW(0); /讀reg的內(nèi)容 CSN = 1; return(reg_val); uchar SPI_Write_Buf(uchar reg, uchar *pBuf, uchar bytes)uchar status,byte_ctr; CSN = 0; status = SPI_RW(reg); for(byte_ctr=0;

11、 byte_ctrbytes; byte_ctr+) SPI_RW(*pBuf+); CSN = 1; return(status); void TX_Mode(void)CE=0; SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); /*接收模塊的地址*/ SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); /*通道0 接收數(shù)據(jù)地址*/ SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); /*

12、寫待發(fā)數(shù)據(jù)指令a0*/ SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); /數(shù)據(jù)通道0應(yīng)答允許 SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); /接收數(shù)據(jù)通道0允許 SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x1a);/等待 500+86us 自動重發(fā)10次 SPI_RW_Reg(WRITE_REG + RF_CH,40); SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); /數(shù)據(jù)傳輸率1Mbps ,發(fā)射功率0dBm SPI_RW_Reg(WRITE_REG + CONFIG,

13、 0x0e); /配置寄存器CE=1;void checkflag() sta=SPI_Read(STATUS);/讀狀態(tài)寄存器 if(MAX_RT) SPI_RW_Reg(FLUSH_TX,0); /*沖洗發(fā)送FIFO指令*/ SPI_RW_Reg(WRITE_REG+STATUS,sta);/清除中斷/以下是DS18B20的操作程序/*/ void delay_18B20(unsigned int i)/延時1微秒 while(i-); set18b20()/*ds1820復(fù)位*/ EA=0;ds18b20= 1; /復(fù)位delay_18B20(4); /延時ds18b20 = 0; /拉

14、低delay_18B20(100); /精確延時大于480usds18b20 = 1; /拉高delay_18B20(10);crrent=ds18b20;while(!ds18b20);EA=1;return(crrent); /返回值 uchar read18b20() /*讀數(shù)據(jù)*/ uchar i; uchar dat = 0; EA=0;for(i=0x01; i!=0; i0; i-) ds18b20 = 0; _nop_(); _nop_(); ds18b20=wdata&0x01; delay_18B20(10); ds18b20 = 1; wdata=1; EA=1;/*LC

15、D1602*void delayms(uint z) /不精確延時uchar x;uint y;for(x=z;x0;x-)for(y=125;y0;y-); void LCD_BUSY() /LCD忙檢測uchar sta; P0=0xff;lcdrs=0;lcdrw=1; dolcden=1;sta=P0;lcden=0;while(sta & 0x80);void writelcdcmd(uchar cmd) /LCD寫命令LCD_BUSY();delayms(1);lcdrs=0;lcdrw=0;lcden=0;P0=cmd;delayms(1);lcden=1;delayms(1);

16、lcden=0;void writelcddat(uchar dat) /LCD寫數(shù)據(jù)LCD_BUSY();delayms(1);lcdrs=1;lcdrw=0;lcden=0;P0=dat;delayms(1);lcden=1;delayms(1);lcden=0;void inilcd() /LCD初始化 delayms(15);writelcdcmd(0x38);delayms(5);writelcdcmd(0x0c);delayms(5);writelcdcmd(0x06);delayms(5);writelcdcmd(0x01);delayms(5);void play(unsign

17、ed char *p)/顯示/while(*p!=0)writelcddat(*p);p+;delayms(1);/*void readtemperature(void) uchar TL; /儲存暫存器的溫度低位 uchar TH; /儲存暫存器的溫度高位 set18b20(); write18b20(0xcc); write18b20(0x44); set18b20(); write18b20(0xcc); write18b20(0xbe); TL=read18b20(); /先讀的是溫度值低位TH=read18b20(); /接著讀的是溫度值高位 distance_data0=TH ;

18、/測量結(jié)果的高8位 distance_data1=TL; /放入16位的高8位 value=TH; value=8; value=value|TL; /*溫度顯示*/void disp18b20() /液晶顯示溫度 uint i,t; if(valueHT)&(crrent=0) /這里設(shè)置溫度上限值，來控制繼電器，需加crrent=0，不然DS18B20在拔掉后會出錯 while(t-) while(i-) /這里是繼電器導(dǎo)通為3分鐘左右，中間不讀取溫度 set18b20(); LED=0; if(valueHT)&(crrent=0) LED=0; /*改變設(shè)定溫度*/DC=1;AD=1;

19、if(AD=0) /設(shè)定溫度加HT+;while(!AD);if(DC=0) /設(shè)定溫度減HT-;while(!DC); /*/ /*讀取上限值溫度*/ setdat0=HT/100+0; /十位 setdat1=HT%100/10+0x30;/個位 setdat2=HT%10+0; /*/ /*讀取當前溫度*/ disdat0=value/1000+0x30;/百位數(shù) disdat1=value%1000/100+0x30;/十位數(shù) disdat2=value%100/10+0x30;/個位數(shù) disdat3=value%10+0x30;/小數(shù)位 if(tflag=0) disdat4=0x

20、20; else disdat4=0x2d; /當最高位為0時，最高位不顯示 if(disdat0=0x30) disdat0=0x20;if(disdat1=0x30)disdat1=0x20; /*顯示當前溫度*/ writelcdcmd(0x86); writelcddat(disdat4); /符號位 writelcdcmd(0x87); writelcddat(disdat0); writelcdcmd(0x88); writelcddat(disdat1); writelcdcmd(0x89); writelcddat(disdat2); writelcdcmd(0x8a); wr

21、itelcddat(0x2e); /小數(shù)點 writelcdcmd(0x8b); writelcddat(disdat3); writelcdcmd(0x8d); /單位 writelcddat(0xdf); writelcdcmd(0x8e); writelcddat(C); /*顯示設(shè)定溫度溫度*/ writelcdcmd(0xc0); writelcddat(H); writelcdcmd(0xc1); writelcddat(T); writelcdcmd(0xc2); writelcddat(:); writelcdcmd(0xc3); writelcddat(setdat0); w

22、ritelcdcmd(0xc4); writelcddat(setdat1); writelcdcmd(0xc5); writelcddat(.); writelcdcmd(0xc6); writelcddat(setdat2); /*主函數(shù)*void main(void)uchar xx;init_io();inilcd();while(1) readtemperature();/實時更新溫度 writelcdcmd(0x01); /每次數(shù)據(jù)變化清屏顯示 do readtemperature(); checkflag();for(xx=0;xx2;xx+)tx_bufxx= distance

23、_dataxx;/發(fā)數(shù)據(jù)之前必須把要發(fā)送的數(shù)據(jù)裝入它TX_Mode();/必須啟動發(fā)送模塊delay_ms(5); writelcdcmd(0x80); play(str); disp18b20(); while(!crrent); /檢測DS18B20存在，顯示溫度 do readtemperature();writelcdcmd(0x80); play(str1); writelcdcmd(0x80+0x40); play(str2);BEE=1;while(crrent);接收端：#include #include #define uchar unsigned char#define u

24、int unsigned intsbit lcdrs=P20; /定義LCD引腳sbit lcdrw=P21;sbit lcden=P22;uint value=0;uchar code str=Tempe:;uchar code str1=No signal;uchar code str2=Please Check;uchar tflag; / 是否正負uchar data disdat6;uchar data setdat4;void writelcdcmd(uchar);void writelcddat(uchar); /*uchar tm2;#define TX_ADR_WIDTH 5

25、 #define TX_PLOAD_WIDTH 2 uchar const TX_ADDRESSTX_ADR_WIDTH=0x34,0x55,0x10,0x10,0x01; uchar rx_bufTX_PLOAD_WIDTH;uchar tx_bufTX_PLOAD_WIDTH;uchar flag;/標志int cout;sbit CE=P10;/發(fā)射高電平大于10MS 接收高電平 sbit CSN=P11;/低電平ISP使能sbit SCK=P12; /下降沿sbit MOSI=P13;/MCU出sbit MISO=P14;/MCU入sbit IRQ=P15;/中斷uchar bdata

26、 sta;sbitRX_DR=sta6; /接收數(shù)據(jù)準備就緒sbitTX_DS=sta5; /已發(fā)送數(shù)據(jù)sbitMAX_RT=sta4;sbit RS=P20; /寄存器選擇位，將RS位定義為P2.0引腳sbit RW=P21; /讀寫選擇位，將RW位定義為P2.1引腳sbit E=P22; /使能信號位，將E位定義為P2.2引腳sbit BF=P07; /忙碌標志位，將BF位定義為P0.7引腳/*NRF24L01寄存器指令*#define READ_REG 0x00 / 讀寄存器指令#define WRITE_REG 0x20 / 寫寄存器指令#define RD_RX_PLOAD 0x61

27、 / 讀取接收數(shù)據(jù)指令#define WR_TX_PLOAD 0xA0 / 寫待發(fā)數(shù)據(jù)指令#define FLUSH_TX 0xE1 / 沖洗發(fā)送 FIFO指令#define FLUSH_RX 0xE2 / 沖洗接收 FIFO指令#define REUSE_TX_PL 0xE3 / 定義重復(fù)裝載數(shù)據(jù)指令#define NOP 0xFF / 保留/*SPI(nRF24L01)寄存器地址*#define CONFIG 0x00 / 配置收發(fā)狀態(tài)，CRC校驗?zāi)Ｊ揭约笆瞻l(fā)狀態(tài)響應(yīng)方式#define EN_AA 0x01 / 自動應(yīng)答功能設(shè)置#define EN_RXADDR 0x02 / 可用信道設(shè)置

28、#define SETUP_AW 0x03 / 收發(fā)地址寬度設(shè)置#define SETUP_RETR 0x04 / 自動重發(fā)功能設(shè)置#define RF_CH 0x05 / 工作頻率設(shè)置#define RF_SETUP 0x06 / 發(fā)射速率、功耗功能設(shè)置#define STATUS 0x07 / 狀態(tài)寄存器#define OBSERVE_TX 0x08 / 發(fā)送監(jiān)測功能#define CD 0x09 / 地址檢測 #define RX_ADDR_P0 0x0A / 頻道0接收數(shù)據(jù)地址#define RX_ADDR_P1 0x0B / 頻道1接收數(shù)據(jù)地址#define RX_ADDR_P2 0

29、x0C / 頻道2接收數(shù)據(jù)地址#define RX_ADDR_P3 0x0D / 頻道3接收數(shù)據(jù)地址#define RX_ADDR_P4 0x0E / 頻道4接收數(shù)據(jù)地址#define RX_ADDR_P5 0x0F / 頻道5接收數(shù)據(jù)地址#define TX_ADDR 0x10 / 發(fā)送地址寄存器#define RX_PW_P0 0x11 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P1 0x12 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P2 0x13 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P3 0x14 / 接收頻道0接收數(shù)據(jù)長度#define RX

30、_PW_P4 0x15 / 接收頻道0接收數(shù)據(jù)長度#define RX_PW_P5 0x16 / 接收頻道0接收數(shù)據(jù)長度#define FIFO_STATUS 0x17 / FIFO棧入棧出狀態(tài)寄存器設(shè)置/*void init_io(void)CE=0;CSN=1;SCK=0; void delay_ms(unsigned int x) unsigned int i,j; for(i=0;ix;i+) j=108; while(j-); uchar SPI_RW(uchar byte)uchar bit_ctr; for(bit_ctr=0;bit_ctr8;bit_ctr+) MOSI =

31、(byte&0x80); byte = (byte1); SCK = 1; byte|=MISO; SCK=0; return(byte); uchar SPI_RW_Reg(uchar reg, uchar value)uchar status; CSN = 0; status = SPI_RW(reg); SPI_RW(value); CSN = 1; return(status); uchar SPI_Read(uchar reg)uchar reg_val; CSN = 0; SPI_RW(reg); reg_val = SPI_RW(0); CSN = 1; return(reg_v

32、al); uchar SPI_Read_Buf(uchar reg, uchar *pBuf, uchar bytes)uchar status,byte_ctr; CSN = 0; status = SPI_RW(reg); for(byte_ctr=0;byte_ctrbytes;byte_ctr+) pBufbyte_ctr = SPI_RW(0); CSN = 1; return(status); uchar SPI_Write_Buf(uchar reg, uchar *pBuf, uchar bytes)uchar status,byte_ctr; CSN = 0; status

33、= SPI_RW(reg); for(byte_ctr=0; byte_ctr0;x-)for(y=125;y0;y-); void LCD_BUSY() /LCD忙檢測uchar sta; P0=0xff;lcdrs=0;lcdrw=1; dolcden=1;sta=P0;lcden=0;while(sta & 0x80);void writelcdcmd(uchar cmd) /LCD寫命令LCD_BUSY();delayms(1);lcdrs=0;lcdrw=0;lcden=0;P0=cmd;delayms(1);lcden=1;delayms(1);lcden=0;void write

34、lcddat(uchar dat) /LCD寫數(shù)據(jù)LCD_BUSY();delayms(1);lcdrs=1;lcdrw=0;lcden=0;P0=dat;delayms(1);lcden=1;delayms(1);lcden=0;void inilcd() /LCD初始化 delayms(15);writelcdcmd(0x38);delayms(5);writelcdcmd(0x0c);delayms(5);writelcdcmd(0x06);delayms(5);writelcdcmd(0x01);delayms(5);void play(unsigned char *p)/顯示/while(*p!=0)writelcddat(*p);p+;delayms(1);void xianshi(void) uchar TL; /儲存暫存器的溫度低位 uchar TH; /儲存暫存器的溫度高位 TH=tm0 ; TL=tm1; /這樣得到的是溫度小數(shù)部分的第一位數(shù)字(保留1位小數(shù)) value=TH; value=8; value=value|T