MC9S08PA..Code for Delay routine

mikee_ — Fri, 24 Apr 2015 20:15:38 GMT

Hello,

I am writing this piece of code in order to insert a delay in my execution cycle.

The code is the following:

DELAY: STHX DLY_A ; (4)

LOOPOUT: STX DLY_B ; (3)

LOOPIN:

DEC DLY_B ; (4)

BNE LOOPIN ; (3)

DEC DLY_A ; (4)

BNE LOOPOUT ;(3)

RTS

I am using code warrior 10.6

After starting the debug process. The communication with the micro-controller will stop after debugger will step in and is able to do few iterations .

PS: watchdog is deactivated.

Looks really weird.

Any help?

Any body has a better way to insert delay?

Many thanks

Re: MC9S08PA..Code for Delay routine

tonyp — Fri, 24 Apr 2015 22:47:19 GMT

Hard to tell what's wrong without more complete code. For example, where are DLY_A and DLY_B variables located?

BTW, here's a sample delay routine to give you an idea (but for ASM8 assembler)

8-bit MicrocontrollersのトピックMC9S08PA..Code for Delay routine

MC9S08PA..Code for Delay routine

Re: MC9S08PA..Code for Delay routine