fasong.c

由NRF905和单片机组成的不停车收费接收模块的发送数据端程序

#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
////////////SPI指令
#define WC		0x00
#define RC		0x10
#define WTP		0x20
#define RTP		0x21
#define WTA		0x22
#define RTA		0x23
#define RRP		0x24
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 32
unsigned char TxRxBuffer2[TxRxBuf_Len];
unsigned char TxRxBuffer0[TxRxBuf_Len]=
{

0x43,0x35,0x32,0x30,0x33,//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	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;
///////////////////////////////////////////////////////
//sbit      DQ=P3^5	  ;
///////////////////////////////////////////////////////
sbit RS = P3^7;
sbit RW = P3^6;
sbit E  = P3^5;
//液晶配置口定义//

//RF寄存器配置//
unsigned char idata RFConf[11]=
{
  0x00,                             //配置命令//
  0x4c,                             //CH_NO,配置频段在423MHZ
  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
  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
};
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++);
}

///////等待液晶上条指令完成延时////////
void LCDdelay(void)
{	uint i;
    for(i=0;i<=255;i++)
	   { }
}
/////////LCD写数据////////////////////////////
void LCDwdata(void)
{
	RS=1;
	RW=0;
	E=1;
	LCDdelay();
	E=0;
	LCDdelay();
	E=1;
}
/////////LCD写指令//////////////////////
void enable(void)
{ 
	RS=0;
	RW=0;
	E=1;
    LCDdelay();
	E=0;
	LCDdelay();
	E=1;
}
////////LCD初始化/////////////////
void initLCD(void)
{
	P0=0x01;
	enable();
	P0=0x38;
	enable();
	P0=0x0c;
	enable();
	P0=0x06;
	enable();
	P0=0x82;		//初始显示位置
	enable();
}	
void LCD_write(unsigned char a)
{
	P0=a;
	LCDwdata();
}
/////////模仿SPI时序//////////////
unsigned char SpiRead(void)
{
	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;
}

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[i]);
	}
	CSN=1;					// Disable Spi
}
/////////////初始化
void Inituart(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(TxRxBuffer0[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;
	TXEN=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)
{
	TXEN=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 && TXEN==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);
    TRX_CE=0;
	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);
          //   Delay(10000);
          //   Delay(10000);
         //    Delay(10000); 
		TxRxBuffer2[i]=SpiRead();		// Read data and save to buffer
           // Delay(10000);
            //    Delay(10000);
            //    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 main(void)
{		char i,k;
        initLCD();
        Inituart();
        nRF905Init();
     	Config905();
		Delay(1);
  
		for(k=0;k<5;k++)	
              { TX();}
			   Delay(100);

	while(1)
	{
			   RX();
			   Delay(10);
		for(i=0;i<5;i++)
		{
		Delay(10);
		P0=TxRxBuffer2[i];
		LCDwdata();
		}
		P0=0xc5;
		enable();
		LCD_write('S');
		LCD_write('U');
		LCD_write('C');
		LCD_write('C');
		LCD_write('E');
		LCD_write('S');
		LCD_write('S');
		P0=0x82;
		enable();
	}		   
		
}