link.c

这个程序用于单片机和无线传输芯片CC2500之间的传送

/*******************************************************************************************************
 *                                                                                                     *
 *        **********                                                                                   *
 *       ************                                                                                  *
 *      ***        ***                                                                                 *
 *      ***   +++   ***                                                                                *
 *      ***   + +   ***     This program lets the user test a simple rf link                           *
 *      ***   +                                                                                        *
 *      ***   + +   ***                                                                                *
 *      ***   +++   ***     Link.c                                                                     *
 *      ***        ***                                                                                 *
 *       ************                                                                                  *
 *        **********                                                                                   *
 *                                                                                                     *
 *******************************************************************************************************
 * Compiler:                Keil C51 V7.50                                                             *
 * Target platform:         Chipcon CCxxx0 (Silabs F320)                                               *
 * Author:                  SNA                                                                        *
 *******************************************************************************************************
 * Revision history:        See end of file                                                            *
 ******************************************************************************************************/
#include <Chipcon\srf04\regssrf04.h>
#include <Chipcon\srf04\halsrf04.h>
#include <Chipcon\srf04\ebsrf04.h>
#include <Link.h>
#include <LCD.h>
#include <stdio.h>
//-------------------------------------------------------------------------------------------------------
//  Global Variables

BYTE xdata rxBuffer[11] ;
float re;
//-------------------------------------------------------------------------------------------------------


//-------------------------------------------------------------------------------------------------------
//  void main(void)
//
//  DESCRIPTION:
//      This program shows how how to set up a link between two units.      
//----------------------------------------------------------------------------------------------------
void main (void) {
    
    unsigned char i;
    
	UINT8 length;
    
	char buf[13]=" ";

    char Flag;     
    #ifdef STAND_ALONE
    
		// Select the Internal Oscillator as Multiplier input source and disable the watchdog timer
    	// SYSCLK = 4X Clock Multiplier / 2     
     	CLOCK_INIT();
    #endif

	// Set up the crossbar and I/O ports to communicate with the SmartRF04EB peripherals
    
	IO_PORT_INIT();   
	halWait(50000); 
    SPI_INIT(SCLK_6_MHZ);
    POWER_UP_RESET_CCxxx0();
    halRfWriteRfSettings(&rfSettings);
    halSpiWriteReg(CCxxx0_PATABLE, paTable);
    halWait(30000);
	
	LcmInit( );     
	LcmClearTXT();
	LcmClearBMP();   
	PutBMP(logo);
	halWait(500000);
	halWait(500000);
	Delay(100000);
   	LcmClearBMP();   
	PutBMP(bmp1);
	// PutStr(0,2,"颈椎测量仪");
	//PutStr(1,6,"mm");
    // Infinite loop    
    while (TRUE) {
        
        P_LED1=0;
		length = sizeof(rxBuffer);		
        if (halRfReceivePacket(rxBuffer, &length)) {		
        
	 		//display rdata 计算算法
	    	 if (rxBuffer[3]>=0xf0)//判断符号位，为正，取反
		      {
		 	    rxBuffer[1]=~rxBuffer[1];
				rxBuffer[2]=~rxBuffer[2];
				rxBuffer[3]=~rxBuffer[3];						
		    	Flag=' ';
				 }
			 else
				 {
				 Flag='-';
				 }
    				 
			P_LED1=1;
            re=(rxBuffer[1]+rxBuffer[2]*256+rxBuffer[3]*65536)*0.00124015;
		     //display
			  for (i=5;i<13;i++) buf[i]=' ';
			  //i=sprintf (buf, "CH%c: %1.2f",rxBuffer[0]+0x30,re); 
			  i=sprintf (buf, " %1.2f",re*0.1);
			  buf[0]=Flag;
			  buf[i]=' ';
              buf[i+1]='\0';
			  		 
              //ReadStringUART(buf,7);
              PutStr(3,4,buf);
			 
              halWait(5000);
	     }
                    
    }  
}