New approach to Rotary Encoder

[Ioannis]

How does this work? Since Enc=Aux=0, How can the If clause be true? There must be some pull-ups in PORTA pins.

Ioannis

[CuriousOne]

Here's the initial approach, I've modified for my needs. It does not works, what may be the reason?

LEFT var GPIO.0
RIGHT var GPIO.1
COUNTER VAR word
counter=128

cycl:
if LEFT=0 then                 'here is switch 1 of the rotary encoder
    counter=counter+1
    goto lcd
endif
 
if RIGHT=0 then                 'here is switch 2 of the rotary encoder
    counter=counter-1
    goto lcd
endif
 
goto cycl
 
lcd:
hpwm 1,counter,5000
while (LEFT=0 or RIGHT=0):pause 10:wend
goto cycl

MCU is PIC12F683

[CuriousOne]

well, I think I found the problem - it never treats inputs as inputs, despite a high level on LEFT or RIGHT, it still =0

Seems like I need some command to configure pins as input?

[CuriousOne]

TRISIO=%11111111

does not helps

[CuriousOne]

ANSEL = %00000000
CMCON0 = 7
this helped

[dovegroup]

How does this work? Since Enc=Aux=0, How can the If clause be true? There must be some pull-ups in PORTA pins.

Ioannis

Sorry for the late reply
See here and we will resolve the questions

https://sites.google.com/site/proyec...le-con-16f628a

[Ioannis]

It seems very strange that I got an e-mail notification only today about this thread by dovegroup's reply.

I am not very good at C but from your example, dovegroup, I think the variable x might change more than one at every step in rotating the encoder because of the bouncing effects.

Ioannis