moudlebus.c.svn-base

由MSP430F135做控制器的温度控制详细程序

#include<msp430x13x.h> 
#include"..\inc\resources.h"
#include"..\inc\const_def.h"

extern unsigned char rcv[50],trn[30],dt[30];//transmit receive buffer
extern unsigned char txnumber;	  //receive number
extern unsigned char rcv_pkg_ok; //receive pakage flag
extern unsigned int ack_out_f;

unsigned char const  comman_tbl[] = {
	//0 run Frontad
	':', 0x01, 0x03, 0x01, 0x03,0xff, 
	//6 run reversal
	':', 0x01, 0x03, 0x01, 0x14,0xff, 
	//12 stop
	':', 0x01, 0x03, 0x01, 0x08,0xff, 
	//18 ack out f
	':', 0x01, 0x04, 0x01, 0x01,0xff, 
	//24 set f
	':', 0x01, 0x05, 0x02,	    0xff, 
	//29 set parameter
	':', 0x01, 0x02, 0x03,	    0xff};

#define RUNFR   0
#define RUNREV  6
#define STOP    12
#define ACKOUTF 18
#define SETF 	24
#define SETP 	29
#define NONE_P 	0xffff
#define MB_ATIME 	12  // 0.1~6500.0
#define MB_DTIME 	13  // 0.1~6500.0
#define MB_PLOCK 	10  //1 lock; 0 no lock


/////////////////////////////////////
unsigned char get_low_char(unsigned char ch)
{
	unsigned char i;
	i = ch & 0x0f;
	if( i < 10 )
		i += 0x30;
	else    i += (0x41-10);
	return (i);
}
unsigned char get_hi_char(unsigned char ch)
{
	unsigned char i;
	i = (ch & 0xf0) >> 4;
	if( i < 10 )
		i += 0x30;
	else    i += (0x41-10);
	return (i);
}

unsigned char get_dnumber(unsigned char ch)
{
	unsigned char i;
	
	if( ch > 0x40 )
		i = ch - (0x41 - 0x0a);
	else    i = ch - 0x30;
	return (i);
}


void comm_bld( unsigned int comm,unsigned int p1,unsigned int p2 )
{
	unsigned char lcr,k;
	unsigned int i,j;
	
	rcv_pkg_ok = FALSE;
	
	lcr = 0;
	
	j = 0;
	//trn[j++] = ':';
	
	//command
	i = 1;
	k = comman_tbl[ comm + i ];
	do{
		lcr += k; 
		trn[j++] = get_hi_char(k);
		trn[j++] = get_low_char(k);
		i++;
		k = comman_tbl[ comm + i ];
	}while( k != 0xff);
	//p1
	if( p1 != NONE_P ){
		k = p1;
		lcr += k; 
		trn[j++] = get_hi_char(k);
		trn[j++] = get_low_char(k);
	}	
	//p2	
	if( p2 != NONE_P ){
		k = ( p2 & 0xff00) >> 8;
		lcr += k; 
		trn[j++] = get_hi_char(k);
		trn[j++] = get_low_char(k);
		k =  p2 & 0xff;
		lcr += k; 
		trn[j++] = get_hi_char(k);
		trn[j++] = get_low_char(k);
	}
	k = ~lcr + 1;
	trn[j++] = get_hi_char(k);
	trn[j++] = get_low_char(k);
	
	trn[j++] = 0x0d;
	trn[j++] = 0x0a;
	trn[j++] = 0x00;
	trn[j++] = '.';
	
	rs485out_();		//out
	txnumber = 0;
	U0TXBUF = ':';	
	
}

unsigned int check_pkg_lcr( unsigned int n)
{
	unsigned char lcr;
	unsigned int i,j;
	
	
	if( rcv[0] != ':')
		return(1);
	i =1;
	j =0;
	lcr = 0;
	
	while( rcv[i] != 0x0d){
		
		dt[j] = get_dnumber( rcv[i] )*16 + get_dnumber( rcv[i+1] );
		lcr += dt[j];
		i += 2;
		j++;
	}
	
	if( lcr != 0 ) 
		return (1);
	
	switch(n){
	case SETP:
		if( dt[1] == 0x81 ) 
			return(1);
		break;
	case SETF:
		if( (dt[1] != 0x05) || (dt[2] != 0x02) ) 
			return(1);
		break;
	case STOP:
	case RUNFR:
		if( dt[1] == 0x83 ) 
			return(1);
		
		break;
	case ACKOUTF:
		if( (dt[1] != 0x04) || (dt[3] != 0x01) )
			return(1);
		ack_out_f = dt[4] * 256 + dt[5];
		break;
	default:
		break;
	}
	return(0);
}