test1.c

基于pic16分46 的rs485通讯协议

#include <pic16f946.h>
#include "rs485.h"
#include "delay.h"
#include "lcd_595.h"

/*----------------------------------------------------------------

 		USART interrupt service (for test)

----------------------------------------------------------------*/

void interrupt Usart(void)
{
    if ( RCIF&&RCIE )              // If USART RX Interrupt
    {		
		RF6 = !RF6;  
		cRs485RxChar = RCREG;  
		
		if ( !( RCSTA & 6 ) )                  // Then if no errors
         {   		                           // Process received character
             Rs485Decode();                    // Decode RS485 network trafic
             CREN = 1;                         // Enable receiver.
         }
         else
         {
             CREN = 0;         	// Clear any errors
             cRs485RxChar = RCREG;
             cRs485RxChar = RCREG;
             CREN = 1;           // Enable receiver.
         }
		RCIF = 0;
    }

}

/*----------------------------------------------------------------

     			main function for test

----------------------------------------------------------------*/

#define Seperate_877A
//#define Master	


void main(void)
{
	unsigned char cReceiveOK;
	unsigned char cTest[10];
	unsigned char cPacketReady;
	unsigned char cLenOfData;
	unsigned char cCmd;

	int cReceiveOkHigh,cReceiveOkLow;
	int cSendTimeHigh1,cSendTimeLow1;
	int cReceiveOkHigh1,cReceiveOkLow1;
	int cReceiveOkHigh2,cReceiveOkLow2;
	
	cReceiveOkHigh = 0;			
	cReceiveOkLow = 0;			
	cSendTimeHigh1 = 0;
	cSendTimeLow1 = 0;
	cReceiveOkHigh1 = 0;
	cReceiveOkLow1 = 0;


   	Setup();
	ConfigureComms();
   	lcd_initial();
	lcd_clear();
	GIE = 1;

#ifdef  Master
		while(1)
		{						
      		cOurAddr = 0x11;
    		Rs485Initialize( cOurAddr );	// the same as above

			cTest[0] = 'l';
        	cTest[1] = 'o';
        	cTest[2] = 'v';
        	cTest[3] = 'e';
        	cTest[4] = 'u';

 			Rs485SendPacket( SENSOR_GET_DATA, 5, &cTest[0] );

			RF7 = !RF7;

			cSendTimeLow1++;
			if(cSendTimeLow1==10000)
			{
			cSendTimeLow1 = 0; 
			cSendTimeHigh1++;
			}
			//lcd_gotoxy(0,0);
        	//lcd_putsf(a);
			lcd_gotoxy(0,0);
        	lcd_dispdata(cSendTimeHigh1);
			lcd_gotoxy(0,1);
			lcd_dispdata(cSendTimeLow1);
		
			DelayMs(80);
			//lcd_gotoxy(5,0);
        	//lcd_putsf(b);
			lcd_gotoxy(5,0);
        	lcd_dispdata(cReceiveOkHigh1);
			lcd_gotoxy(5,1);
			lcd_dispdata(cReceiveOkLow1);

			cPacketReady = Rs485Process();
			
			if ( cPacketReady )
        	{	
				Rs485GetPacket( &cCmd, &cLenOfData, &cTest[0] ); 

				if	( cCmd==0xbb )  
				{
					cReceiveOkLow1++;

					if(cReceiveOkLow1==10000)
						{
							cReceiveOkHigh1++;
							cReceiveOkLow1 = 0;
						}
				}
			}

			cCmd = 0x00;
			DelayMs(20);
			cOurAddr = 0x10;				//send to another addr
    		Rs485Initialize( cOurAddr );	// the same as above

			cTest[0] = 'g';
        	cTest[1] = 'o';
        	cTest[2] = 'o';
        	cTest[3] = 'd';
			cTest[4] = 'p';

 			Rs485SendPacket( SENSOR_GET_DATA, 5, &cTest[0] );

			DelayMs(80);

			cPacketReady = Rs485Process();

			if ( cPacketReady )
        	{	
				Rs485GetPacket( &cCmd, &cLenOfData, &cTest[0] ); 

				if	( cCmd==0xaa )  
				{
					cReceiveOkLow++;
					if(cReceiveOkLow==10000)
						{
							cReceiveOkHigh++;
							cReceiveOkLow = 0;
						}
				}
			}

			lcd_gotoxy(10,0);
        	lcd_dispdata(cReceiveOkHigh);
			lcd_gotoxy(10,1);
			lcd_dispdata(cReceiveOkLow);
			cCmd = 0x00;
		}
#endif


#ifdef 	Seperate_877A				//for seperate

	cOurAddr = 0x10;
    Rs485Initialize( cOurAddr );	// init the addr
	while(1)
	{
      
        cPacketReady = Rs485Process();	// process and check if received valid message
		
       if ( cPacketReady )
        {	
			lcd_gotoxy(0,0);
			lcd_dispdata(cReceiveOkHigh);
			lcd_gotoxy(0,1);
			lcd_dispdata(cReceiveOkLow);
	
			cReceiveOkLow++;
			if(cReceiveOkLow==10000)
			{
			cReceiveOkLow = 0; 
			cReceiveOkHigh++;
			}
						
           	Rs485GetPacket( &cCmd, &cLenOfData, &cTest[0] );// get it if crc is correct
			DelayMs(2);				// send get ok command to master
			Rs485SendPacket(0xbb, 0, &cTest[0] );
			
        }
	}

#endif
}