Control de temperatura

[moisecito]

hola amigos les comento que cuando lo simulo en proteus me responde muy bien en el momento que esta en la placa solo visualizo el temporizador ( la placa con otro programa funciona bien).
aca les dejo el programa:

DEVICE 16F876
        INTCON = %10100000          'se habilita TOIE  interr. de TMR0) 
        ON INTERRUPT GOTO contdor   'Enable software interrupts, and point to interrupt handler   
'****************************************************************
' DEFINICION PARA EL LCD
'******************************************************
        lCD_DTPIN = PORTC.4  'PARA 4 LINEAS DE DATOS EN EL LCD
        LCD_RSPIN = PORTC.2  'asigna portd.2 a RS
        LCD_ENPIN = PORTC.3  'Asigna portd.3 a E   
        LCD_LINES = 2        'LCD  de dos filas
        LCD_INTERFACE = 4    'un bus de 4 líneas
'******************************************************
' DEFINICIO PARA EL ADC        
'******************************************************
       	ADIN_RES	10		 'Set the resolution to 10
        ADIN_TAD	FRC		 'Choose the RC osc for ADC samples
       	ADIN_STIME	100      'Allow 100us for charge time
'******************************************************
'VARIABLES
'******************************************************
        DIM  TEM0    as WORD  'temp del canal0  LECTURA DEL ADC  (10 BITS)
        DIM  TEM1    AS FLOAT 'temp del canal1
        DIM  TEM2    AS WORD  'temp del canal2
        DIM  tempr   AS WORD                
        DIM  TEMP0   AS WORD  ' temp programada del canal0              
        DIM  TP[5]   AS BYTE ' tiempo 
        dim  TE0[11] AS BYTE ' temperatura                   
        dim  i       as byte
        dim  j       as byte
        dim  uni     as byte
        dim  deci    as byte
        dim  ovflow  as byte
        dim  rseg    as byte
        dim  rmin    as byte            
        DIM  u       as bit   'inicio
'******************************************************** 
'condiciones iniciales
'********************************************************   
        ADCON1= $80      'CONFIGURO LOS 8 CANALES COMO ENTRADAS ANALOGICAS
        TRISC=%00000000  'CONFIGURO AL PUERTO C 
        TRISB=%00000111
        TE0[0]=20        'temperatura de 20ºC
        TE0[1]=25        'temperatura de 25ºC
        TE0[2]=30
        TE0[3]=35
        TE0[4]=40
        TE0[5]=45
        TE0[6]=50
        TE0[7]=55
        TE0[8]=60
        TE0[9]=65
        TE0[10]=70
        TP[0]=1         'triempo de 20 MINUTOS
        TP[1]=30         'triempo de 30 MINUTOS
        TP[2]=40         '           40
        TP[3]=50         '           50
        TP[4]=60         '           60
'******************************************************** 
 
'********************************************************        
        i=0
        j=0 
        ovflow=0
        portb.3=0
        portB.5=0         
        portb.0=0
        option_reg=$06
'********************************************************     
inicio: u=0
        print $fe,1
aa:     print at 1,1, "A P A G A D O"         
        print at 2,1,"Pulse INI" 
        IF PORTB.0=0 THEN GOTO aa    'pregunta sise ha activado la carga
        print $fe,1
        rmin=0
        rseg=0
        u=1                           'se activala carga
ini:    GOSUB Lee_TP
        gosub canal0
        print at 1,1,"TP=",dec TP[J]," "
        print at 2,1,"TE0_P=",DEC TE0[I]
        print AT 2,9,"TE0_R=",DEC TEMPR
        if rmin=TP[j] then 
          portB.5=0                  'apagado carga 0                             
          gosub alarma                  'se activa la alarma
          rmin=0                        'se pasa a 0 rmin
          rseg=0                        'se pone a cero rseg
          goto iniCIO
        end if  
        goto ini
        DISABLE
'******************************************************** 
 contdor: intcon.2=0
        print at 1,9,"M=",dec rmin," ","S",dec rseg,"  "   
        tmr0=240
        if u=1 then  tmr0=240
        ovflow=ovflow+1
        if ovflow=100 then goto uno
        RESUME
        ENABLE 
        return
uno:    ovflow=0
        rseg=rseg+1  
        if rseg=60 then goto dos
        RESUME
        ENABLE 
        return
dos:    ovflow=0
        rseg=0
        rmin=rmin+1
        if rmin=60 then rmin=0
paus:   RESUME                 'Return to main program
        ENABLE 
        return
'********************************************************         
canal0:        
        GOSUB lee_TE0
        TEMP0 = ADIN 1        'LEE EL SENSOR  DEL CSANAL 0
        tempr=0.049*TEMP0+20 'ACONDICIONADO A TEMPERATURA
        PRINT AT 1,6,"tempr= ",dec tempr," ",dec temp0
        if  rmin=tp[j] then  
            portB.5=0         'finaliza
            goto fin
         endif   
        IF tempr>TE0[i] THEN 
           PORTB.5 = 0        ' APAGA 
        ELSE 
           PORTB.5 = 1        ' PRENDE 
        ENDIF
fin:    return 
'******************************************************** 
'rutina que define la temperatura del canal 0
'******************************************************** 
lee_TE0:
        if portb.1=1 then i=i+1      'se incrementa
m0:     if portb.1=1 then goto m0 
         
        if i>10 then i=0 
        return 
'******************************************************** 
'rutina que define la temperatura del canal 1
'********************************************************
'rutina que define el tiempo de activación 
'********************************************************
lee_TP:
        if portb.2=1 THEN J=j+1        'se incrementa
m1:     if portb.2=1 then goto m1
        if j>4 then j=0
        return                
'********************************************************
'rutina que acriva la alarma
'********************************************************
alarma:        
        portb.3=1            'alarma
        delayms 500
        portb.3=0
        delayms 500
        portb.3=1
        delayms 500
        portb.3=0
        return
'******************************************************** 
            
        END