From c to pbp

[savnik]

I have made the pcb and these days i will try if work.

Thank you Bruce
I test and work , but it should not all the delays they is same; PAUSE9

Edit: I use the code as you post , without any change.

[Jerson]

The delays shown by Bruce are mistakenly wrong. The original code shows delay_cycles(59) That is delay for 59 cycles. So, by using Bruce's code as a start, you can make the delay for 59 cycles. This will give you the correct timings. Another thing, the oscillator is 20MHz. So, the initial define has to be

define OSC  20000000

cntr    byte    1

delay_cycles59:             ' 2 cycles to get here

asm
         MOVLW  11          ' 1 cycle
         MOVWF  _cntr      ' 1 cycle
loop:  DECFSZ _cntr,F     ' 1 cycles  (3*17+1 = 52)
         GOTO   loop          ' 2 cycles
         nop                    ' 1 cycle
         return                 ' 2 cycles

endasm

The above has a subroutine to give you an exact delay of 59 cycles. You can call the function from PBP like this

         gosub  delay_cycles59

[Bruce]

Per Savniks' original post,

How to change this code to picbasic pro.Also i want to use xtal 4MHZ

I think he's looking for a similar function, but with a 4MHz osc VS 20MHz.

If not, then of course the timing in my example would indeed be wrong.

[savnik]

Per Savniks' original post,
I think he's looking for a similar function, but with a 4MHz osc VS 20MHz.

If not, then of course the timing in my example would indeed be wrong.

Yes , I was looking for a similar function, but with a 4MHz Xtal.