How to detect low battery in battery powered F683 circuit

[mark_s]

These "enhanced" pics don't use the GPIO like the old ones. Use porta.5 to read
and lata.5 to write. See page 13 and page 121 of the data sheet


Add: See Hecklers code and configs
http://www.picbasic.co.uk/forum/show...ght=pic12f1822

[tekart]

Wow. Thanks Mark - I missed that. I just HATE all these whiz bang "features" that force us mere mortal coders to spend *days* learning a new chip! Grrrr. <end rant>
SO to implement a pin as output only I use:
GreenLED var lata.1 ' high = light power LED
and also set:
' config
TRISa = %011001 ' set I/O directions (0 = output, 1 = input)
LATa = %011001

- still not getting it to work with above settings. Do I have bit polarity right for LATA?

[mark_s]

I think you would declare your variable as

GreenLED var PORTA.1

[tekart]

I think you would declare your variable as
GreenLED var PORTA.1

Been testing that and the compiler seems to accept either
GreenLED var PORTA.1
or
GreenLED var LATA.1

[mark_s]

At this point without posting your complete code it's hard to guess what's wrong.

[tekart]

Got all the OUTPUTS working fine - no need for LATA configurations apparently. Struggling with some kind of hardware bug - so I'm basically good. No idea how or why I would configure LATA at this point as it all seems to work fine without any direct reference to it.

[flotulopex]

Maybe this application note from MICROCHIP can help ;-)