Anyone have an idea on trouble shooting this error after single stepping through routine?
Pic18f23k22
Or any usual cause?
CORE-E0002: Stack under flow error occurred from instruction at 0x0000be
Max.

 

That would be a return without a call, or entry into an ISR without an interrupt.

Can you show your code?

 

You could have been a bit faster!

Thanks
Max.

 

I just had the same error 3 days ago, also on a 23k22...

Nice chip, btw.

 

Correctamungo. a section of code segued into a call routine!!
Thks again.
Max.

 

No probs.

 

Is there any way in MPLAB to record or indicate the amount of cycles for a particular piece of code, without stepping through and counting?.
If it is there, I don't seem to find it.
Max.

 

Is there any way in MPLAB to record or indicate the amount of cycles for a particular piece of code, without stepping through and counting?.
If it is there, I don't seem to find it.
Max.

Stopwatch? It is in the debugger dropdown.




John

 

Is there any way in MPLAB to record or indicate the amount of cycles for a particular piece of code, without stepping through and counting?...

What jpanhalt said.

I have found that good code rarely requires counting clock cycles except in cases where timing is of critical importance, and then I usually let the peripheral hardware take care of the timing for me.

If you find yourself counting cycles often, you may be doing something wrong.

OTOH, I often use the stopwatch to verify proper settings for timers and other hardware.

 

Three places I found it helped were:
1) Working on some issue with software UART;
2) Figuring out how much data I could send between interrupts (kind of a redundant calculation); and
3) Comparing various versions of code for the same function.

I got in the habit of checking cycles, because I noticed so may posts on PicList show that metric, and it is incredibly easy to do when debugging. It takes no more time.

John

 

Comparing various versions of code for the same function.

John

Thanks, basically what i was looking to do.
Max.