ad pot fastest response!

[Alaskanphoenix]

HI,
i must poll 7 pots on a 16f88 and send a message only when the pot is used,i tried to write and read the adval on the on-chip eeprom but it is a very slow process and i need a fast response!
Any idea or code example?

Thank you very much

[Dave]

Alaskanphoenix, Is there some reason you are writing the value to EEPROM?

Dave Purola,
N8NTA

[Alaskanphoenix]

My programming skill is very low, so i write in eeprom only for my laziness!
But i thing it is not very good!

Thanks

[mister_e]

if you plan to do something usefull with those value when the power is removed and then power up.. i'll suggest to detect the when the power is remove and then save your value to the EEPROM.

I know Melanie already posted something on that with the according circuit... can't find it as now.

ow if you need for speed, don't use ADCIN but read/write and configure your PIC A/D yourself. not hard, code space saving and much faster. OK for assembly too but... accessing register in PBP could be really fast enough.

[mister_e]

OK got the post of Melanie

http://www.picbasic.co.uk/forum/show...52&postcount=3

So now, depending of your current stuff, you may use Interrupts (on PORT change, INT0, INT..., Analog comparator...) or polling the PIN for a low level. quite simple to do.

[Alaskanphoenix]

thank you Mister_e

i already use the ad configuration registers,but the polling of the 7 pots isn't fast enough!I read instant interrupt post and I think i must use the A/D Converter Interrupt but i don't understand how to configure and use interrupts! Could you post an example or another way to poll the ad pins and send only the one is used?