#include

//

//只需要把自己单片机的I/O 口接上对应

sbit MISO = P1^3;

sbit MOSI = P1^4;

sbit CK = P1^5;

sbit CE = P1^6;

sbit CSN = P3^7;

sbit IRQ = P1^2;

sbit LED2 = P3^5;

sbit LED1 = P3^4;

sbit KEY1 = P3^0;

sbit KEY2 = P3^1;

//SPI(nRF24L01)commands

#define EAD_REG 0x00 //Definereadcommandtoregister

#define ITE_REG 0x20 //Definewritecommandtoregister

#define D_RX_PLOAD 0x61 //DefineRXpayloadregisteraddress

#define LOAD 0xA0 //DefineTXpayloadregisteraddress

#define FLUSH_TX 0xE1 //DefineflushTXregistercommand

#define FLUSH_RX 0xE2 //DefineflushRXregistercommand

#define EUSE_TX_PL 0xE3 //DefinereuseTXpayloadregistercommand

#define Nop0xFF //DefineNoOperation,mightbeusedtoreadstatusregister

//***************************************************//

//SPI(nRF24L01)registers(addresses)

#define CONFIG 0x00 //'Config' registeraddress

#define EN_AA 0x01 //'Enable AutoAcknowledgment'registeraddress

#define EN_RXADDR 0x02 //'Enabled RXaddresses'registeraddress

#define ETUP_AW 0x03 //'Setup addresswidth'registeraddress

#define ETUP_RETR 0x04 //'Setup Auto.Retrans'registeraddress

#define F_CH 0x05 //'RF channel'registeraddress

#define F_SETUP 0x06 //'RF setup'registeraddress

#define ATUS 0x07 //'Status' registeraddress

#define BSERVE_TX 0x08 //'Observe TX'registeraddress

#define CD 0x09 //'Carrier Detect'registeraddress

#define ADDR_P0 0x0A //'RX addresspipe0'registeraddress

#define ADDR_P1 0x0B //'RX addresspipe1'registeraddress

#define ADDR_P2 0x0C //'RX addresspipe2'registeraddress

#define ADDR_P3 0x0D //'RX addresspipe3'registeraddress

#define ADDR_P4 0x0E //'RX addresspipe4'registeraddress

#define ADDR_P5 0x0F //'RX addresspipe5'registeraddress

#define ADDR 0x10 //'TX address'registeraddress

#define 0x11 //'RX payloadwidth,pipe0'registeraddress

#define 1 0x12 //'RX payloadwidth,pipe1'registeraddress

#define 2 0x13 //'RX payloadwidth,pipe2'registeraddress

#define 3 0x14 //'RX payloadwidth,pipe3'registeraddress

#define 4 0x15 //'RX payloadwidth,pipe4'registeraddress

#define 5 0x16 //'RX payloadwidth,pipe5'registeraddress

#define FIFO_STATUS 0x17 //'FIFO StatusRegister'registeraddress

//------------------------------------------------------------// 写一个字节到24L01，同时读出一个字节

uchar SPI_RW(ucharbyte)

{

uchar ;

for (bit_ctr=0;bit_ctr<8;bit_ctr ) //output8-bit

{

MOSI = (byte&0x80);//output'byte', MSBtoMOSI

byte = (byte<<1);//shiftnextbitintoMSB..

SCK = 1;//SetSCKhigh..

byte |= MISO;//capturecurrentMISObit

SCK = 0;//..then setSCKlowagain

}

return(byte);//returnreadbyte

}

// 向寄存器reg写一个字节，同时返回状态字节

uchar SPI_RW_Reg(BYTEreg,BYTEvalue)

{

uchar status;

CSN = 0;//CSNlow, initSPItransaction

status = SPI_RW(reg);//selectregister

SPI_RW(value);//..and writevaluetoit..

CSN = 1;//CSNhighagain

return(status);//returnnRF24L01statusbyte

}

// 读出bytes字节的数据

uchar SPI_Read_Buf(BYTEreg,BYTE*pBuf,BYTEbytes)

{

uchar status,byte_ctr;

CSN = 0;//SetCSNlow,initSPItranaction

status = SPI_RW(reg);//Selectregistertowritetoandreadstatusbyte

for (byte_ctr=0;byte_ctr pBuf[byte_ctr] = SPI_RW(0);//

CSN = 1;

return(status);//returnnRF24L01statusbyte

}

// 写入bytes字节的数据

uchar SPI_Write_Buf(BYTEreg,BYTE*pBuf,BYTEbytes)

{

uchar status,byte_ctr;

CSN = 0;

status = SPI_RW(reg);

for (byte_ctr=0;byte_ctr SPI_RW(*pBuf );

CSN = 1;//SetCSNhighagain

return(status);//

}

// 接收函数，返回1表示有数据收到，否则没有数据接受到

unsigned char nRF24L01_RxPacket(unsignedchar*rx_buf)

{

unsigned char revale=0;

//setinRXmode

SPI_RW_Reg(WRITE_REG CONFIG,0x0f);//SetPWR_UPbit,enableCRC(2bytes)&

Prim:RX.RX_DRenabled..

CE = 1;//SetCEpinhightoenableRXdevice

dalay130us();

sta = SPI_Read(STATUS);//readregisterSTATUS'svalue

if (RX_DR)//ifreceivedataready(RX_DR)interrupt

{

CE = 0;//standbymode

SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);//readreceivepayloadfrom

RX_FIFObuffer

revale = 1;

}

SPI_RW_Reg(WRITE_REG STATUS,sta);//clearRX_DRorTX_DSorMAX_RTinterrupt flag

return revale;

}

// 发送函数

voidn RF24L01_TxPacket(unsignedchar*tx_buf)

{

CE = 0;

//SPI_Write_Buf(WRITE_REG TX_ADDR,TX_ADDRESS,TX_ADR_WIDTH);//Writes

TX_AddresstonRF24L01

//SPI_Write_Buf(WRITE_REG RX_ADDR_P0,TX_ADDRESS,TX_ADR_WIDTH);//

RX_Addr0sameasTX_AdrforAuto.Ack

SPI_Write_Buf(WR_TX_PLOAD,tx_buf,TX_PLOAD_WIDTH);//WritesdatatoTXpayload

SPI_RW_Reg(WRITE_REG CONFIG,0x0e);//SetPWR_UPbit,enableCRC(2bytes)&

Prim:TX.MAX_RT&TX_DSenabled..

CE = 1;

dalay10us();

CE = 0;

}

// 配置函数

void nRF24L01_Config(void)

{

//initialio

CE = 0;//chipenable

CSN = 1;//Spidisable

SCK = 0;//Spiclockline inithigh

CE = 0;

SPI_RW_Reg(WRITE_REG CONFIG,0x0f);//SetPWR_UPbit,enableCRC(2bytes)&

Prim:RX.RX_DRenabled..

SPI_RW_Reg(WRITE_REG EN_AA,0x01);

SPI_RW_Reg(WRITE_REG EN_RXADDR,0x01);//EnablePipe0

SPI_RW_Reg(WRITE_REG SETUP_AW,0x02);//Setupaddresswidth=5bytes

SPI_RW_Reg(WRITE_REG SETUP_RETR,0x1a);//500us 86us,10retrans...

SPI_RW_Reg(WRITE_REG RF_CH,0);

SPI_RW_Reg(WRITE_REG RF_SETUP,0x07);//TX_PWR:0dBm,Datarate:1Mbps,

LNA:HCURR

SPI_RW_Reg(WRITE_REG RX_PW_P0,RX_PLOAD_WIDTH);

SPI_Write_Buf(WRITE_REG TX_ADDR,TX_ADDRESS,TX_ADR_WIDTH);

SPI_Write_Buf(WRITE_REG RX_ADDR_P0,TX_ADDRESS,TX_ADR_WIDTH);CE=1;//

}

//////////////////第三维编辑/////////////////////////////////////////////////////