Button help

[med2007]

On the side, could you tell me the correct syntax to poll portb in a for..next loop?
viz
FOR i = 0 to 7
IF portb.[i]=0 THEN GOSUB alarm
NEXT i
This doesn't work and I can't find the answer in the book

Make sure:

1. ADCON1 = 7 so that your PORTA pins are digital

2. Set the appropriate TRISA.x = %1 for Digital Input

3. Wire a pull-up resistor (10K from V+ to each pin that will sense the switch)

4. Wire each switch, one side ground, the other to the pin from step #3

5. Set up a loop for polling the ports; High (%1) will be normal, and Low (%0) will show when the switch is held closed.

If you're not used to digital signals, it seems weird to ground out a resistor thats hooked to V+, but just accept it.

Regards,

[skimask]

On the side, could you tell me the correct syntax to poll portb in a for..next loop?
viz
FOR i = 0 to 7
IF portb.[i]=0 THEN GOSUB alarm
NEXT i
This doesn't work and I can't find the answer in the book

http://www.picbasic.co.uk/forum/showthread.php?t=544

[med2007]

Thanks for the link...so my syntax should be?

FOR i = 0 to 7
IF portb.0(i) = 0 THEN GOSUB alarm
NEXT i

I'll give it a whirl.
Rgds
MED2007