PIC Delay calculator

Nigel Goodwin

Super Moderator

Most Helpful Member

• Nov 8, 2009

• #41

Just4Kason said:

hi, i'm beginner of pic.
can i ask what is the meaning of below instruction

goto $+2

what is the meaning of the $ sign?

Click to expand...

$ is the current address, it's explained in the MPASM/MPLAB helpfile.

 

blueroomelectronics

Well-Known Member

• Nov 11, 2009

• #42

GOTO $+2 is a shortcut and can trip you up when you switch from 16F to 18F PICs.

The $ is the current address and the +2 adds two to the current address and jumps there. It's a popular skip instruction.

 

Mr RB

Well-Known Member

• Nov 11, 2009

• #43

goto $+2 jumps forward 2 instructions;
$ = program counter (where we are now)
$+2 = program counter+2

 

J

Just4Kason

New Member

• Nov 17, 2009

• #44

ic.
but, i dun know how to do the calculation for this delay.
no matter how i count, i still cannot get 0.5 sec.
please teach me how to count it, in order i can create my own delay in the future.
thanks for advance.

 

P

ptal

New Member

• Jul 29, 2011

• #45

Great Delay Calculator

I've created some software that has a delay calcultor and cycle calculator. you can get it free from picokit.com

**broken link removed**

The Software is called PicoFlow LT and has a number of features.
If you can think of other tools I could include in this software then please let me know.

Thanks,
Phil