Anyone Got a 16F88 to Work in Analog?

[thunderstrike44]

Has anyone got a 16F88 to work in analog at all? I am dead in the water right now. It appears to set the registers ok but I am not getting anything that tells me its working. If anyone has something that works please let me know or otherwise I guess I go back to a 16F876 and see if I can get that to work, but it cost more....

Brian R.

[Dwayne]

Has anyone got a 16F88 to work in analog at all? I am dead in the water right now. It appears to set the registers ok but I am not getting anything that tells me its working. If anyone has something that works please let me know or otherwise I guess I go back to a 16F876 and see if I can get that to work, but it cost more....


Make sure you have your TRIS registers correctly set. Can you give us a very VERY short part of your program that shows where it is not working, and we can verify it?

Did you set CMCON to 7, and turn off the comparators?

Dwayne

[thunderstrike44]

I am trying simple code, I thought anyway....

Take a look at this....

DEFINE LOADER_USED 1


OSCCON = %01100111

TRISA = %00000011
TRISB = %00000000
PORTB = %00000000

ANSEL = %00000011
ADCON1 = %11000000
ADCON0 = %11000001

CMCON = 7

DEFINE ADC_BITS 8
DEFINE ADC_CLOCK 3
DEFINE ADC_SAMPLEUS 50


CTA VAR BYTE

main:

ADCIN 0, CTA

ledtst1:
IF CTA > 50 Then tst2
PORTB = %00000001
GoTo cont

tst2:
IF CTA > 100 Then tst3
PORTB = %00000011
GoTo cont

tst3:
IF CTA > 175 Then tst4
PORTB = %00000111
GoTo cont

tst4:
PORTB = %00001111

cont:

Pause 200

GoTo main
End


Just something to give me a visual that I am getting something back. Unfortunately, unlike the 16F877A I don't have a display on this one to be able to read out the value....

Brian R.