|
|
最近帮老师做了一个NRF905的东东，调试了一下，还OK，把程序弄上来给大家看看啦！
#include <reg52.h>
#include <ABSACC.h>
#include <intrins.h>
#include <stdio.h>
//----------------------------------------------------------------------------------------------------------------
#define uint unsigned int
#define uchar unsigned char
//----------------------------------------------------------------------------------------------------------------
#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;
//---------------------------------------------------发送数据缓冲区-------------------------------------------------
#define TxRxBuf_Len 4
unsigned char TxRxBuf[TxRxBuf_Len]=
{
0x29,0x30,0x31,0x32,
};
//---------------------------------------------------配置口定义---------------------------------------------------
//配置口定义//
sbit TXEN=P2^1;
sbit PWR=P2^2;
sbit CD=P2^3;
sbit DR=P2^4;
sbit MOSI=P2^5;
sbit CSN=P2^6;
sbit TRX_CE=P3^3;
sbit AM=P3^5;
sbit MISO=P3^6;
sbit SCK=P3^7;
//----------------------------------------------------按键--------------------------------------------------
sbit KEY0 =P3^2;
sbit KEY1 =P3^1;
//----------------------------------------------------数码管位控制-------------------------------------------------------
sbit led0 =P1^7;
sbit led1 =P1^6;
//-----------------------------------------------------------------------------------------------------------------
uchar seg[10]={0xC0,0xCF,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90}; //0~~9段码
//-------------------------------------------------------nrf905控制指令-------------------------------------------
#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, //CH_NO,配置频段在430MHZ
0x0c, //输出功率为10db,不重发，节电为正常模式
0x44, //地址宽度设置，为4字节
0x04,0x04, //接收发送有效数据长度为32字节
0xCC,0xCC,0xCC,0xCC, //接收地址
0x58, //CRC充许，8位CRC校验，外部时钟信号不使能，16M晶振
};
code TxAddress[4]={0xcc,0xcc,0xcc,0xcc};
char tf;
//------------------------------------------------延时------------------------------------------------------------
static void Delay(uchar n)
{
uint i;
while(n--)
for(i=0;i<80;i++);
}
//---------------------------------------------------SPI读函数-----------------------------------------------------
unsigned char SpiRead(void)
{
unsigned char j;
for (j=0;j<8;j++)
{
DATA_BUF=DATA_BUF<<1;
SCK=1;
if (MISO) //读取最高位，保存至最末尾，通过左移位完成整个字节
{
DATA_BUF|=BYTE_BIT0;
}
else
{
DATA_BUF&=~BYTE_BIT0;
}
SCK=0;
}
return DATA_BUF;
}
//-------------------------------------------------SPI写函数----------------------------------------------------------
void SpiWrite(unsigned char send)
{
unsigned char i;
DATA_BUF=send;
for (i=0;i<8;i++)
{
if (DATA7) //总是发送最高位
{
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
}
//-----------------------------------------------------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写放配置命令
for (i=0;i<11;i++) // Write configration words 写放配置字
{
SpiWrite(RFConf);
}
CSN=1; // Disable Spi
}
//-----------------------------------------------------发送数据打包---------------------------------------------------
void TxPacket(uchar *TxRxBuf)
{
uchar i;
//Config905();
CSN=0;
SpiWrite(WTP); // Write payload command
for (i=0;i<4;i++)
{
SpiWrite(TxRxBuf); // Write 32 bytes Tx data
}// Spi enable for write a spi command
CSN=1;
Delay(1); // Spi disable
CSN=0; // Spi enable for write a spi command
SpiWrite(WTA); // Write address command
for (i=0;i<4;i++) // Write 4 bytes address
{
SpiWrite(TxAddress);
}
CSN=1; // Spi disable
TRX_CE=1; // Set TRX_CE high,start Tx data transmission
Delay(1); // while (DR!=1);
TRX_CE=0; // Set TRX_CE low
}
//----------------------------------------------------------设置发送状态---------------------------------------------
void SetTxMode(void)
{
TRX_CE=0;
TXEN=1;
Delay(1); // delay for mode change(>=650us)
}
//-----------------------------------------------设置发送状态---------------------------------------------------
void SetRxMode(void)
{
TXEN=0;
TRX_CE=1;
Delay(1); // delay for mode change(>=650us)
}
//-------------------------------------------------判断数据接收状态-----------------------------------------------------
unsigned char CheckDR(void) //检查是否有新数据传入 Data Ready
{
if (DR=1&&TRX_CE==1 && TXEN==0)
{
// Delay(50) ;
return 1;
}
else
{
return 0;
}
}
//----------------------------------------------------读NRF905接收数据------------------------------------------------------------
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++)
{
TxRxBuf=SpiRead(); // Read data and save to buffer
}
CSN=1;
Delay(10);
TRX_CE=1;
}
//--------------------------------------------------------数据接收------------------------------------------------
void RX(void)
{
SetRxMode(); // Set nRF905 in Rx mode
while (CheckDR()==0);
Delay(10);
RxPacket();
if(TxRxBuf[0]==0x29)
{
P1=0x0f;
}
if(TxRxBuf[1]==0x29)
{
P1=0xf0;
}
}
void delay_10ms(void) //误差 -0.000000000002us
{
unsigned char a,b;
for(b=249;b>0;b--)
for(a=17;a>0;a--);
}
//-----------------------------------------------------------------------------------------------------------------
void main(void)
{
nRF905Init();
Config905();
led0=0;
led1=0;
while(1)
{
RX();
if(KEY0 ==0)
{
delay_10ms();
if(KEY0 ==0 )
{
tf = 1 ;
TxRxBuf[0]=0x29;
TxRxBuf[1]=0x30;
P1=0x0f;
while(!KEY0);
delay_10ms();
while(!KEY0);
}
}
if(KEY1 ==0)
{
delay_10ms();
if(KEY1 ==0 )
{
tf = 1 ;
TxRxBuf[0]=0x30;
TxRxBuf[1]=0x29;
P1=0xf0;
while(!KEY1);
delay_10ms();
while(!KEY1);
}
}
if (tf==1)
{
SetTxMode();// Set nRF905 in Tx mode
TxPacket(TxRxBuf);// Send data by nRF905
tf = 0;
Delay(100);
}
Delay(100);
P1=0xff;
Delay(100);
}
} |
|
发表于 2011-5-20 18:38:33
楼主