Need help for PIC16C745

[paul borgmeier]

Is this all of your code or is it a snippet (in post above)? I ask because you have no list, includes, or CONFIG at the start. Inside the Microchip folder (from the MPLAB install), you should be able to find a template for the 16c745. I would suggest using this as the outer shell and put your stuff inside. Further, because the PIC you picked is quite "fancy", you should make it blink an LED first to ensure it is even running. Your program is not difficult, but you should start even simpler than you are otherwise you do not know if your problem is a logic issue, a hardware issue, a register issues, etc.

Try to blink your led first

Oh, if your code is complete, you lost the wrap around to return to Start. Your code would just run off into no-where and execute any code left in your PIC (should it be the windowed version)

[christina86]

Hi Paul,

I did include list and # include and CONFIG in my code .
list p=16c745 ; list directive to define processor
#include <p16c745.inc> ; processor specific variable definitions

__CONFIG _CP_OFF & _WDT_OFF & _PWRTE_ON & _E4_OSC

But yet with this, my code is not working.Can you help me. I did like what you said do the simple one first ( blink the LED only ) but it is not working either . Here is my code : for binkling one.
list p=16c745 ; list directive to define processor
#include <p16c745.inc> ; processor specific variable definitions

__CONFIG _CP_OFF & _WDT_OFF & _PWRTE_ON & _E4_OSC


MAIN org 00000030h


bsf STATUS,RP0 ; select bank1
movlw b'00000000' ; Set pins PORTB 1,2 as Input
movwf TRISB ;
bcf STATUS, RP0 ; go back to Bank 0

Start
movlw b'00000001' ; move it from register 1 to w.
movwf PORTB ; move it to PORTB to light up the LED
movlw b'00000000' ; move it from register 1 to w.
movwf PORTB ; OFF the LED
goto Start

Can you help me with the code cause this Fridat is my dateline.

Thank you so much

[paul borgmeier]

>>I did like what you said do the simple one first ( blink the LED only ) but it is not working either
Did the LED not light or did it stay on?

What crystal are you using?

Do you have a schematic?