发布时间 : 星期三 文章毕业论文 - 基于51单片机和NRF24L01的无线温度监控 - 图文更新完毕开始阅读
#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 #define TX_ADR_WIDTH 5 #define RX_ADR_WIDTH 5 #define TX_PLOAD_WIDTH 4 #define RX_PLOAD_WIDTH 4 uchar idata rxbuf1[2]={0}; //uchar idata aa[20]={0};
uchar RX_ADDRES[5]={0x34,0x43,0x19,0x91,0x09}; uchar code table[]=%uchar bdata sta;
sbit RX_DR= sta^6; sbit TX_DS= sta^5; sbit MAX_RT= sta^4;
sbit lcd_rs=P1^0; sbit lcd_rw=P1^1; sbit lcd_en=P1^2;
没有天生的聪明 只有不懈的努力
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sbit CE=P2^7; Sbit CSN=P2^2; sbit MOSI=P2^3; Sbit MISO=P2^5; Sbit SCK=P2^6; sbit IRQ=P2^4;
sbit K1=P3^7; sbit K2=P3^6; sbit K3=P3^5;
sbit BJ=P1^3; sbit BEEF=P1^4;
uchar MAX=25; uchar MIN=20; bit flag2=0; uchar slnum=0;
void delayms(uint x) { uint i,j; for(i=x;i>0;i--) for(j=113;j>0;j--); }
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 }
uchar SPI_RW(uchar byte) { uchar i; for(i=0;i<8;i++) { MOSI=(byte&0x80); byte=(byte<<1); 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_val); }
uchar SPI_read_pload(uchar reg,uchar *pBuf,uchar bytes) { uchar status,i; CSN=0; status=SPI_RW(reg); for(i=0;i uchar SPI_write_pload(uchar reg,uchar *pBuf,uchar bytes) { uchar status,i; CSN=0; status=SPI_RW(reg); for(i=0;i 没有天生的聪明 只有不懈的努力 34 void RX_mode() { CE=0; SPI_write_pload(WRITE_REG+RX_ADDR_P0,RX_ADDRES,TX_ADR_WIDTH); SPI_RW_reg(WRITE_REG+RX_PW_P0,TX_PLOAD_WIDTH); SPI_RW_reg(WRITE_REG+EN_AA,0X01); SPI_RW_reg(WRITE_REG+EN_RXADDR,0X01); SPI_RW_reg(WRITE_REG+SETUP_RETR,0X1F); SPI_RW_reg(WRITE_REG+RF_CH,40); SPI_RW_reg(WRITE_REG+RF_SETUP,0X0F); SPI_RW_reg(WRITE_REG+CONFIG,0X0F); CE=1; } uchar RxPacket(uchar *rx_buf) { uchar flag=0; sta=SPI_read(STATUS); if(RX_DR) { CE=0; SPI_read_pload(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH); flag=1; SPI_RW_reg(WRITE_REG+STATUS,0xff); CSN=0; SPI_RW(FLUSH_RX); CSN=1; CE=1; } return(flag); } void write_com(uchar com) { lcd_rs=0; lcd_rw=0; P0=com; lcd_en=1; delayms(1); lcd_en=0; }