12F683 ADcin = binary outcome!

[HankMcSpank]

Hi Joe,

I tried your recommendation - couldn't get it to work.

I think it might be something to do with leaving the Pickit2 programmer attached as a 'virtual' serial connnection to my PC - so I moved the AtoD over to AN3 (pin 3)..

This code seems to work...

@MyConfig = _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON  
@MyConfig = MyConfig & _MCLRE_OFF 

DEFINE OSC 4           ' Internal 8MHz
DEFINE ADC_BITS 8      ' 8-bit resolution
DEFINE ADC_CLOCK 2     ' Set clock source to Frc/32
DEFINE ADC_SAMPLEUS 50 ' Sample time in uS before A/D conversion is started

CMCON0 = 7   			'Comparators off
ADCON0 = %00000001		'ADC enabled and right justified
ANSEL = %00001000		'GPIO.0 and GPIO.1 analog input
INTCON = 0				'INTERRUPTS off
TRISIO = %111011		'GPIO2 output
GPIO = %00010000 		' All outputs = 0 on boot

    Quanta  CON 1251        ' For 10-bit A/D +Vref = 5V : 5V/1023*256=1.251=Quanta
    ADval  VAR WORD	    ' A/D conversion result

    DEFINE DEBUG_REG GPIO   ' Define DEBUG port
    DEFINE DEBUG_BIT 0      ' Set GPIO.0 as DEBUG serial output pin
    DEFINE DEBUG_BAUD 9600  ' DEBUG baud rate = 9600 bps
    DEFINE DEBUG_MODE 0     ' 1 = inverted, 0 = true
    
    MAIN:
    ADCIN 3, ADval      ' Read A/D
    DEBUG DEC ADvAL,13 ,10
    PAUSE 200
    GOTO MAIN

    END

Many thanks for your help.

[Archangel]

Hi Joe,

I tried your recommendation - couldn't get it to work.

I think it might be something to do with leaving the Pickit2 programmer attached as a 'virtual' serial connnection to my PC - so I moved the AtoD over to AN3 (pin 3)..

This code seems to work...

@MyConfig = _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON  
@MyConfig = MyConfig & _MCLRE_OFF 

DEFINE OSC 4           ' Internal 8MHz
DEFINE ADC_BITS 8      ' 8-bit resolution
DEFINE ADC_CLOCK 2     ' Set clock source to Frc/32
DEFINE ADC_SAMPLEUS 50 ' Sample time in uS before A/D conversion is started

CMCON0 = 7               'Comparators off
ADCON0 = %00000001        'ADC enabled and right justified
ANSEL = %00001000        'GPIO.0 and GPIO.1 analog input
INTCON = 0                'INTERRUPTS off
TRISIO = %111011        'GPIO2 output
GPIO = %00010000         ' All outputs = 0 on boot

    Quanta  CON 1251        ' For 10-bit A/D +Vref = 5V : 5V/1023*256=1.251=Quanta
    ADval  VAR WORD        ' A/D conversion result

    DEFINE DEBUG_REG GPIO   ' Define DEBUG port
    DEFINE DEBUG_BIT 0      ' Set GPIO.0 as DEBUG serial output pin
    DEFINE DEBUG_BAUD 9600  ' DEBUG baud rate = 9600 bps
    DEFINE DEBUG_MODE 0     ' 1 = inverted, 0 = true
    
    MAIN:
    ADCIN 3, ADval      ' Read A/D
    DEBUG DEC ADvAL,13 ,10
    PAUSE 200
    GOTO MAIN

    END

Many thanks for your help.

OK, if you are going to use @MyConfig, you are missing the most important piece, under @myConfig you must have the config statement directing it to use MYConfig
like so:

@_MyConfig = _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON  
@_MyConfig = MyConfig & _MCLRE_OFF 
@ __config MyConfig

And @ _MyConfig must have 1 underscore and no spaces between the @ symbol and the underscore.
I suspect if that worked for you then doing it this way will give an overwriting previous address error, because your code is still using the default config.