main.c

无线收发模块cc1100的配置程序cc1100.h,io.h和发送、接收程序cc1100.c

//-- Includes ----------------------------------------------------------------
#include <absacc.h>
#include <reg51.h>
#include <intrins.h>
#include <math.h>
#include "cc1100.h"	
#include "io.h"

//按键检测时间间隔
byte data time=0;

// 数码管位驱动和指示灯驱动信号输出缓存，定义了一个可位寻址的变量 */
byte bdata output_sel;
	sbit led_1 = output_sel^5;
	sbit led_2 = output_sel^6;
	sbit led_3 = output_sel^7;
	sbit led_4 = output_sel^4;


void keyboard();

//public variable------------------------------------------------------------
byte data receive[8];       //command packet received from wireless
byte data transmit[8];      //command packet transmitted to wireless
byte data InstructBit;      //transmit byte 
byte data ReadBit;          //received byte
byte data txfifo_num;       //number of bytes in txfifo
byte data rxfifo_num;       //number of bytes in rxfifo


//----------------------------------------------------------------------------
timer0() interrupt 1 using 0         
{
	EA=0;  /*关中断*/

	/* 重新对计数器赋初值，并启动定时计数 */
   TH0=V_TH0;
   TL0=V_TL0;
   output_sel = 0xD0; /*初值，令数码管驱动位无效，指示灯全灭*/
	
	/* 检测到按键被按下（0）时，相应的指示灯亮（0） */
   keyboard();
   EA=1;  /*开中断*/
}

void keyboard()
{
	byte i;
	if (time==15)
	{
		if (KEY1==0 ||KEY2==0 ||KEY3==0||KEY4==0) {
			if (KEY3==0)     //read 8bytes from RXFIFO only for test
			{
				led_3 = 0;
				SpiReadData(8);	
				SpiWriteData(0,8);
			}
			else if (KEY4==0)  //initialize the cc1100 chip
			{
				led_4 = 0;
				SpiCommandStrobe(SRES);
				for (i=0; i<=50; i++)
  					_nop_();
				RfWriteRfSettings();
				_nop_();
	   		    _nop_();
				_nop_();
				_nop_();
			    SpiCommandStrobe(SRX);//shift to receive state
				Csn=1;
				IE1=0;
				EX1=1;               //open int1 wait for command packet
				TR0=0;
			}
		  else if (KEY2==0)        //read the TXFIFO and RXFIFO states (only for test)
		  {
			  led_2=0;
   		  txfifo_num=SpiReadReg(TXBYTES|0x40);  
			  rxfifo_num=SpiReadReg(RXBYTES|0x40);
		  }
		}
		time=0;
	}
	else
		time ++;
	ADDR_SEL = output_sel;  
}

int1()interrupt 2 using 0 {     //when the command packet has arrived


	EA=0;
	rxfifo_num=SpiReadReg(RXBYTES|0x40);
	if (rxfifo_num>=8) {
		SpiReadData(8);	
		
	    transmit[0]=0x7E;			//soi
		transmit[1]=0x00;           //addr
		transmit[2]=receive[2];		//rspd
	    transmit[3]=0x00;			//rtn
		transmit[4]=receive[1];     //info1: addr
		transmit[5]=receive[4];     //info2
		transmit[6]=0;
		transmit[7]=0;
		

		  
		  
		SpiWriteData(0,8);
		SpiCommandStrobe(STX);
	}
	EA=1;
}

//============================================================================
//P1.4--SO
//P1.5--SI
//P1.6--Csn
//P1.7--SCLK
//P3.2--GDO0
//P3.3--GDO2
void main() {
 	 P1=0XFF;
     P3=0XFF;
	// 中断工作寄存器初始化
    IE=0x80;
    IP=0x04;	//INT1高优先级
    IT1=1;
    EX1=0;

	GDO2=1;
	TMOD=0X11;
    TH0=V_TH0;
    TL0=V_TL0;
	ET0=1;
    TR0=1;
	 

 	for(;;) {
   
	}
}

//============================================================================