mattschinkel wrote:
I used the ADC lib once only, for potentiometer to pwm (motor
control). so, I did not use enable_digital_io (on 16f877), so I guess
all analog pins continued to be analog pins. So what should be done if
I only need one of the pins to be analog and the rest to be digital?
Wayne, now you could make a question & answer for the website FAQ.
Matt
I appreciate the offer but I believe that it would be better if you
included the Tutorial that Joep & Toon made and the blog post on ADC the
Seb wrote to the JAL web page.
I know that it would require some work but they are both very good
references and are worthy of inclusion with the other Tutorials.
Regards
Wayne
Thanks,
Matt.
On Jan 7, 9:06�pm, "Wayne <[email protected]>" <[email protected]>
wrote:
William wrote:
On Jan 7, 7:10 pm, "Wayne <[email protected]>" <[email protected]>
wrote:
Make sure you don't call
enable_digital_io()
after this adc_init(), since this disables the use of ADC.
Right, I meant to say, I'm not sure how to do it with JALLIB.
-- Eur's routine to read the A/D
var word analog
procedure get_analog is
� �ADCON0_NDONE = true
� �while ADCON0_NDONE loop end loop
� �analog = word(ADRESH) << 8
� �analog = analog + word(ADRESL)
end procedure
ADCON0 = 0b01_000_001
ADCON1 = 0b10_00_1110
forever loop
� �get_analog()
� �-- display on lcd
end loop
William
I just finished re-reading the Joep & Toon Tutorial. �They explained the
answer to my question. �ie to use the analog pins as digital IO
you have to disable them using the enable_digital_io(). �what I had
read, but didn't remember, was that the non analog pins are usable any
way 'without' using the enable_digital_io() call.
So in my case I just have to use a digital pin for the LCD and an analog
pin for the adc and never call enable_digital_io().
Thank you Joep & Toon. �Your Tutorial has helped me yet again.
Regards
Wayne- Hide quoted text -
- Show quoted text -
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