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Electronic Equipment > Microcontrollers 8bit > how to trace a ...
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how to trace a microcontroller running it's app ?

by "robb" <some@[EMAIL PROTECTED] > Jan 11, 2008 at 09:03 PM

I have a (8051) micro-controller that i would like to trace it's
runtime program to understand how the program works for purpose
of potentialy modifying code. (The only info of program is the
program binary copied off ROM )

The micro-controller consists of  (usuall stuff):
---------------------------------------
> Siemens 8031, ROM, SRAM
> servo motors (+ driver ICs)
> simple user 16 char (14 seg) interactive display
> grid of buttons (24)

Any ideas on how to do this?  how possible ?

I have a PJRC 8051 Rev.4 development board that runs "Paulmon"
which allows you to load your program to some offset in RAM and
step through it. (i really want to see the I/O as it runs
though)

My idea/thought at first was to maybe connect the PJRC  board to
the MCU socket of the microcontroller board and trace the program
??

What i have tried is load in a simulator like (EdSim51) to run
and determine what program does but i would need to some how
simulate all the devices (input) ?

any help and ideas greatly appreciated,
robb
 




 29 Posts in Topic:
how to trace a microcontroller running it's app ?
"robb" <some  2008-01-11 21:03:36 
Re: how to trace a microcontroller running it's app ?
"BobW" <nimb  2008-01-11 19:55:32 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-12 06:43:17 
Re: how to trace a microcontroller running it's app ?
donald <Donald@[EMAIL   2008-01-11 21:41:13 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-12 07:26:34 
Re: how to trace a microcontroller running it's app ?
Neil Cherry <njc@[EMAI  2008-01-12 13:39:19 
Re: how to trace a microcontroller running it's app ?
Ian Malcolm <valid.add  2008-01-12 04:51:45 
Re: how to trace a microcontroller running it's app ?
"starfire" <  2008-01-12 09:40:34 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-14 11:04:56 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-13 23:04:25 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-14 10:22:47 
Re: how to trace a microcontroller running it's app ?
"TT_Man" <So  2008-01-12 13:13:47 
Re: how to trace a microcontroller running it's app ?
Mark Borgerson <mborge  2008-01-12 10:40:05 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-14 10:53:58 
Re: how to trace a microcontroller running it's app ?
"TT_Man" <So  2008-01-14 17:17:15 
Re: how to trace a microcontroller running it's app ?
Mark Borgerson <mborge  2008-01-14 13:15:58 
Re: how to trace a microcontroller running it's app ?
skswrus@[EMAIL PROTECTED]  2008-01-12 07:07:59 
Re: how to trace a microcontroller running it's app ?
"TT_Man" <So  2008-01-13 11:48:51 
Re: how to trace a microcontroller running it's app ?
Chris <cfoley1064@[EMA  2008-01-12 08:00:40 
Re: how to trace a microcontroller running it's app ?
"TT_Man" <So  2008-01-13 11:50:43 
Re: how to trace a microcontroller running it's app ?
Chris H <chris@[EMAIL   2008-01-13 13:02:49 
Re: how to trace a microcontroller running it's app ?
Spehro Pefhany <speffS  2008-01-13 08:30:44 
Re: how to trace a microcontroller running it's app ?
"TT_Man" <So  2008-01-13 17:20:46 
Re: how to trace a microcontroller running it's app ?
Ian Malcolm <valid.add  2008-01-13 18:37:50 
Re: how to trace a microcontroller running it's app ?
Chris H <chris@[EMAIL   2008-01-13 13:11:56 
Re: how to trace a microcontroller running it's app ?
"robb" <some  2008-01-14 11:02:55 
Re: how to trace a microcontroller running it's app ?
"okaegi_nospam@[EMAI  2008-01-13 05:38:14 
Re: how to trace a microcontroller running it's app ?
cbarn24050@[EMAIL PROTECT  2008-01-14 06:09:25 
Re: how to trace a microcontroller running it's app ?
ClueLess <clueless@[EM  2008-01-17 06:21:07 

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tan12V112 Thu Nov 20 19:30:39 CST 2008.