Matrix user forums

I am trying g to run this programe which works if I don't use the port a switch, but as soon as I include the switch noting happens.

Basically as soon as porta,0 switch is pressed the count on port b led begins.
However noting happens

What have I done wrong
Asm file uploaded

Chloe

Hi Chloe,
Attached is a modified ASM file.

The reason why your ASM is not working is because by default with 16F1937 all analogue pins are enabled i.e. port A0 being one of them.
If an analogue pin is enabled then it will not work as a digital input,
So I added BANK3 since to disable an analogue pin you need to clear the corresponding bit of ANSELA (ANalogue SELect port A) Register at location H'18C' (BANK3)
I have also added a delay or LEDs will count far too rapidly.

Martin

Edit: Moved Topic to a more appropriate section.

Thanks Martin

You have a been a great help as always

Chloe