下面把接收部分的代碼發(fā)上來：
#include <reg52.h>
#include <ABSACC.h>
#include <intrins.h>
#include <stdio.h>
#define uchar unsigned char
#define uint unsigned int
sbit Led1=P2^0;
sbit Led2=P2^1;
sbit Key=P3^7;
uchar count;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; //0~~F段碼
//--------------------------------------------------------------------------------------------------------------
#define BYTE_BIT0 0x01
#define BYTE_BIT1 0x02
#define BYTE_BIT2 0x04
#define BYTE_BIT3 0x08
#define BYTE_BIT4 0x10
#define BYTE_BIT5 0x20
#define BYTE_BIT6 0x40
#define BYTE_BIT7 0x80
bdata unsigned char DATA_BUF;
#define DATA7 ((DATA_BUF&BYTE_BIT7) != 0)
#define DATA0 ((DATA_BUF&BYTE_BIT0) != 0)
sbit flag =DATA_BUF^7;
sbit flag1 =DATA_BUF^0;
//--------------------------------------------------------------------------------------------------------------
#define TxRxBuf_Len 4
unsigned char TxRxBuffer[TxRxBuf_Len];
//-----------------------------------------------------NRF905端口配置-------------------------------------------
sbit TXEN=P1^0;
sbit TRX_CE=P3^2;
sbit PWR=P1^1;
sbit MISO=P1^6;
sbit MOSI=P1^5;
sbit SCK=P1^7;
sbit CSN=P1^3;
sbit AM=P1^4;
sbit DR=P3^3;
sbit CD=P1^2;
//----------------------------------------------------數(shù)碼管位選IO---------------------------------------------
sbit led1=P2^1;
sbit led0=P2^0;
sbit led2=P2^2;
sbit led3=P2^3;
//--------------------------------------------------------------------------------------------------------------
//uchar seg[10]={0xC0,0xCF,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //0~~9段碼
//---------------------------------------------------------------------------------------------------------------
#define WC 0x00
#define RC 0x10
#define WTP 0x20
#define RTP 0x21
#define WTA 0x22
#define RTA 0x23
#define RRP 0x24
//--------------------------------------------NRF905寄存器配置--------------------------------------------------
unsigned char idata RFConf[11]=
{
0x00, //配置命令//
0x4c,
0x0c,
0x44,0x04,0x04,
0xcc,0xcc,0xcc,0xcc,
0x58, //CRC充許，8位CRC校驗，外部時鐘信號不使能，16M晶振
};
//----------------------------------------------延時---------------------------------------------------------------
void Delay(uchar n)
{
uint k;
while(n--)
for(k=0;k<8;k++);
}
//-----------------------------------------------------------------------------------------------------------------
void delay1(uint i)
{
for(;i>0;i--);
}
//---------------------------------------------------SPI讀函數(shù)-----------------------------------------------------
unsigned char SpiRead(void)
{
unsigned char j;
for (j=0;j<8;j++)
{
DATA_BUF=DATA_BUF<<1;
SCK=1;
if (MISO) //讀取最高位，保存至最末尾，通過左移位完成整個字節(jié)
{
DATA_BUF|=BYTE_BIT0;
}
else
{
DATA_BUF&=~BYTE_BIT0;
}
SCK=0;
}
return DATA_BUF;
}
//---------------------------------------------------SPI寫函數(shù)----------------------------------------------------
void SpiWrite(unsigned char send)
{
unsigned char i;
DATA_BUF=send;
for (i=0;i<8;i++)
{
if (DATA7) //總是發(fā)送最高位
{
MOSI=1;
}
else
{
MOSI=0;
}
SCK=1;
DATA_BUF=DATA_BUF<<1;
SCK=0;
}
}
//-----------------------------------------------初始化nRF905-----------------------------------------------------
void nRF905Init(void)
{
CSN=1; // Spi disable
SCK=0; // Spi clock line init low
DR=0; // Init DR for input
AM=0; // Init AM for input
CD=0; // Init CD for input
PWR=1; // nRF905 power on
TRX_CE=0; // Set nRF905 in standby mode
TXEN=0; // set radio in Rx mode
}
//-----------------------------------------------NRF905初始化寄存器-----------------------------------------------------
void Config905(void)
{
uchar i;
CSN=0; // Spi enable for write a spi command
//SpiWrite(WC); // Write config command寫放配置命令
for (i=0;i<11;i++) // Write configration words 寫放配置字
{
SpiWrite(RFConf[i]);
}
CSN=1; // Disable Spi
}
//-----------------------------------------------設(shè)置發(fā)送狀態(tài)---------------------------------------------------
void SetRxMode(void)
{
TXEN=0;
TRX_CE=1;
Delay(1); // delay for mode change(>=650us)
}
//-------------------------------------------------判斷數(shù)據(jù)接收狀態(tài)-----------------------------------------------------
unsigned char CheckDR(void) //檢查是否有新數(shù)據(jù)傳入 Data Ready
{
if (DR=1&&TRX_CE==1 && TXEN==0)
{
// Delay(50) ;
return 1;
}
else
{
return 0;
}
}
//----------------------------------------------------讀NRF905接收數(shù)據(jù)------------------------------------------------------------
void RxPacket(void)
{
uchar i;
Delay(1);
// TRX_CE=0; // Set nRF905 in standby mode
Delay(100);
TRX_CE=0;
CSN=0; // Spi enable for write a spi command
Delay(1);
SpiWrite(RRP);
for (i = 0 ;i < 4 ;i++)
{
TxRxBuffer[i]=SpiRead(); // Read data and save to buffer
}
CSN=1;
Delay(10);
TRX_CE=1;
}
//--------------------------------------------------------數(shù)據(jù)接收------------------------------------------------
void RX(void)
{
SetRxMode(); // Set nRF905 in Rx mode
while (CheckDR()==0);
Delay(10);
RxPacket();
Delay(10);
}
//-----------------------------------------------------------------------------------------------------------------
void delay50ms()
{
uchar i,j;
for(i=5;i>0;i--)
for(j=200;j>0;j--);
}
//--------------------------------顯示子函數(shù)--------------------------------------------------------------------------
void display()
{
uchar highcount,lowcount;
highcount=count/10;
lowcount=count%10;
P0=table[highcount];
Led1=1;
Led2=0;
delay50ms();
P0=table[lowcount];
Led1=0;
Led2=1;
delay50ms();
}
//-----------------------------------------------------------------------------------------------------------------
void main(void)
{
uchar k;
count=0;
nRF905Init();
Config905();
while(1)
{
for(k=30;k>0;k--)
{
display();
}
RX();
Delay(10);
CSN=0;
if(TxRxBuffer[0])
{
count=TxRxBuffer[0];
display();
}
}
}
