pot command

[Archangel]

I am going to try this today thanks.
I am following John Iovine,s book, he usesa F84a pic. He always uses the portB by default, I wanted to try using port A , but on a F88.
Also I was reading the command CMCON=7 meaning th three first bit are set to one. When I read the legend it says 1 is for Setting th bit, I would of first thought setting would be for setting for comparator mode.

k

Hi Lerameur,
I have his book too, I thought that was where you got that code. He , in my opinion, left too many loose ends in his code as he neglected to put in all the needed little setup routines, like the trisa and trisb etc. he relies on pbp defaults
and that sorta leaves beginners out in the cold, if you do not rely on defaults and write in everything your code will always be usable and only require minor tweaking to port to other PICs
Cheers
JS

[lerameur]

yes thats what I am beginning to realize too , lots of stuff missing in the book, then when you use another chip, I'm screwed.
Abou tthe A/D, doesn't that read a voltage ? whereas the Pot read a resistance ?

[lerameur]

both cde works,
i am trying to figure out one thing now.

I am replacing this command line:
HIGH PORTB.0
PAUSE 1000
LOW PORTB.0

by this one:
serout 2,n9600,(2)

i am getting errors:
C:\PBP\POT_TRY.BAS ERROR Line 39: Bad expression.
C:\PBP\POT_TRY.BAS ERROR Line 33: ID LED2 is not a LABEL.
C:\PBP\POT_TRY.BAS ERROR Line 34: ID LED3 is not a LABEL.
C:\PBP\POT_TRY.BAS ERROR Line 35: ID LED4 is not a LABEL.

suddenly my labels are not labels ??

[keithdoxey]

Sometimes the error messages bear no relation to the actual error.

Try changing serout 2,n9600,(2)

to serout 2,n9600,[2]

[lerameur]

yes thanks,

those french keyboards...

k

[mister_e]

yeah i know what you mean. It's always handy to have English(United State) driver installed too. Just need to press Shift+Alt to switch between language

[Acetronics2]

yes thanks,

those french keyboards...

k

Hi,

For once one can say it's the Keyboard's error ...

Mhhhh, have something against French Goose liver, Sauternes, Camembert, Cognac, ... and so on ...

Ahhhh, I see ... that was just a "glitch" ...

Alain

PS: In French, as I've read here, your should be called " Le Ramier " ... and not "Lerameur" ....
LOL !!!!

[lerameur]

wow shift-alt, thats cool.

I am still confused about one part. The default selection from the compiler is great but very specific for me. Lets say you are using the Pic16F877, with port A, B, C,D,
I then use the command serout, IS there a problem using the exact port?
Ex: serout portC.2,N9600,[3]
instead of 2,N9600,[3] . ( by which I know the pin number, but I dont know the port)
For me it looks like its taking a random port, obviously , the one by default...

ken