12F675 code sample

[mister_e]

Here's something really basic and untested to start with

    '
    '    PIC Configuration
    '    =================
    @ __CONFIG _INTRC_OSC_NOCLKOUT & _WDT_ON & _PWRTE_ON & _MCLRE_OFF & _BODEN_ON
         '    Internal Oscillator
         '    Enable watch dog timer
         '    Enable power up timer
         '    Disable MCLR pin
         '    Enable brown out detect
    
    '
    '    Hardware configuration
    '    ======================
    TRISIO   = %001111         ' GPIO<5:4> as output
                               ' GPIO<3:0> as input
                               '
    CMCON    = 7               ' disable analog comparator
    ADCON0   = %10000001       ' Right justified results & enable A/D
    ANSEL    = %00110011       ' Clock source=FRC
                               ' AN<1:0> : analog other to digital
                               
    DEFINE ADC_SAMPLEUS 50     ' Set sampling time in microseconds 


    '                      
    '    Hardware connection
    '    ===================
    LED0                    var GPIO.4
    LED1                    var GPIO.5

    '   
    '    Variables definition 
    '    ===================
    ADChannel0              var word
    ADChannel1              var word
    
    '
    '    Hardware/Software initialisation
    '    ================================
    GPIO = 0                               ' clear all output
    Pause 50                               ' internal oscillator settle time
                           
    '
    '    Main Program
    '    ============
Start:
    adcin 0,adchannel0                     ' Read AN0
    adcin 1,adchannel1                     ' Read AN1
         '     
         '    A/D results duty
         '    ================
    if adchannel0 < adchannel1 then
       High Led0
       Low  Led1
       write 0, adchannel0.highbyte        ' Store result in internal EEPROM
       write 1, adchannel0.lowbyte
       
       else
           High Led1
           low  Led0
           write 0, adchannel1.highbyte    ' Store result in internal EEPROM
           write 1, adchannel1.lowbyte

       endif
    pause 500
    goto start

Have fun!