ptr8000.c

实现了PTR8000的初始化和收发的程序。

#include <sst89x5x4.h>
#include <ABSACC.h>
#include <intrins.h>
#include <stdio.h>
#define uint unsigned int
#define uchar unsigned char

////////////SPI指令
#define WC		0x00
#define RC		0x10
#define WTP		0x20
#define RTP		0x21
#define WTA		0x22
#define RTA		0x23
#define RRP		0x24

#define TxRxBuf_Len 32
unsigned char RxBuf[TxRxBuf_Len];
unsigned char TxBuf[TxRxBuf_Len]=
{

0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,
0x09,0x10,0x11,0x12,0x13,0x14,0x15,0x16,
0x17,0x18,0x19,0x20,0x21,0x22,0x23,0x24,
0x25,0x26,0x27,0x28,0x29,0x30,0x31,0x32,
};
//配置口定义//
sbit	TX_EN=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=P1^4;
/////////////////////////////////////////////////////
sbit	AM=P1^3;
sbit	DR=P3^3;
sbit	CD=P1^2;
///////////////////////////////////////////////////////
//sbit      DQ=P3^5	  ;

//RF寄存器配置//
unsigned char idata RFConf[11]=
{
  0x00,                             //配置命令//
  0x4c,                             //CH_NO,配置频段在433MHZ				0100 1100
  0x0C,                             //输出功率为10db,不重发，节电为正常模式	0000 1100
  0x44,                             //地址宽度设置，为4字节	   0100 0100
  0x20,0x20,                        //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		0101 1000
};
bit lcdbit;
code TxAddress[4]={0xcc,0xcc,0xcc,0xcc};

///////////延时/////////////////
static void Delay(uchar n)
{
	uint i;
	while(n--)
	for(i=0;i<80;i++);
}

void Spi_Init(void)
{
	SPCR = 0x50;					//SPI使能，主机模式，高位在先，4分频=11.0592/4

}

unsigned char SpiRead_Write(unsigned char DATA)
{
	unsigned char b;
	unsigned char temp;
	Spi_Init();
	SPDR = DATA;	 	//写入要发送数据发送的同时也得到数据
	do
	{temp = SPSR&0x80;}
	
	while(temp!=0x80);
	SPSR = 0x00;	
	b    = SPDR;		//把得到数据保存
	return b;
	}


///////////////
unsigned char SpiRead(void)
{
	unsigned char temp;
	SPDR = 0x00;
	do {
		temp = SPSR&0x80;
		}
	while(temp!=0x80);
//	SPSR = 0x00;
	return SPDR;
/*	unsigned char i;
	for (i=0;i<8;i++)
	{
		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;  */     //模拟SPI
}

void SpiWrite(unsigned char send)
{
	unsigned char temp;
	SPDR = send;
	do {
		temp = SPSR&0x80;
		}
	while(temp!=0x80);
//	SPSR = 0x00;
/*	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;
	}		   */			//模拟SPI
}
////////////////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
	TX_EN=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[i]);
	}
	CSN=1;					// Disable Spi
}
/////////////初始化
void Uart_Init(void)
{
	TMOD = 0x20;				//timer1 working mode 1
	TL1  = 0xfd;					//f7=9600 for 16mhz Fosc,and ...
	TH1  = 0xfd;					//...fd=19200 for 11.0592mhz Fosc
	SCON = 0xd8;				//uart mode 3,ren==1
	PCON = 0x80;				//smod=1
	TR1  = 1;					//start timer1
}


//////////////////////////////////发送数据//////////////////////////////////
void TxPacket(void)
{
	uchar i;
	//Config905();
	CSN=0;
	SpiWrite(WTP);				// Write payload command
	for (i=0;i<32;i++)
	{
		SpiWrite(TxBuf[i]);	    // 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[i]);
	}
	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
}
////////////////////////////////////////////////////
void SetTxMode(void)
{
	TRX_CE=0;
	TX_EN=1;
	Delay(1); 					// delay for mode change(>=650us)
}
unsigned char CheckCD(void)		//Pin->检查是否已存在 同频率载波
{
	if (CD==1)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}
void TX(void)
{
               SetTxMode(); // Set nRF905 in Tx mode
			   TxPacket();  // Send data by nRF905
			   CheckCD();	// 返回CD的当前电平

	// SetRF_PA_PWR(unsigned char i);	//设置发射功率
}

////////////////////////////////////////////////////////////////////////////////////////


//////////////////////////////////接收数据//////////////////////////////////
void SetRxMode(void)
{
	TX_EN=0;
	TRX_CE=1;
	Delay(1); 					// delay for mode change(>=650us)
}

unsigned char CheckDR(void)		//检查是否有新数据传入 Data Ready
{
	if (DR=1&&TRX_CE==1&&TX_EN==0)
	{
       // Delay(50)  ;
		return 1;
	}
	else
	{
		return 0;
	}
}
void RxPacket(void)							//读数据
{
	uchar i;
    Delay(1);
	TRX_CE=0;					// Set nRF905 in standby mode
    Delay(100);    
	CSN=0;						// Spi enable for write a spi command
    Delay(1);
	SpiWrite(RRP);
  // Delay(10000);
  // Delay(10000);			// Read payload command
	for (i = 0 ;i < 32 ;i++)
	{    
         //    Delay(10000); 
		RxBuf[i]=SpiRead();		// Read data and save to buffer
         // Delay(10000);
            
	}
	CSN=1;
    Delay(10);
		// Delay(10);
	TRX_CE=1;							
}
////////////////
void  RX(void)
{
         SetRxMode();			// Set nRF905 in Rx mode
		 //Delay(10000);
         while (CheckDR()==0);
         //Delay(10000);
		 Delay(10);
	  	 RxPacket();
         //Delay(10000);			// Recive data by nRF905
		 Delay(10);
}

void R_S_Byte(uchar R_Byte)
{	
	 SBUF = R_Byte;  
     while( TI == 0 );				//查询法
  	 TI = 0;
     
}


void main(void)
{
        Uart_Init();
        nRF905Init();
     	Config905();
        while(1)
		{
               TX();
		}
}