Problems during load of MCF51AC256.

[JHLG]

Hi,

I'm using a MCF51AC256 on a new prototype.

I get an error message in Command window when loading the target.

...

FP: Run applet (WaitUntilStopped).
GDI:   Writing Register: PC (id:16): 0x080000C
GDI:   DiRegisterWrite()==> DI_OK
EXEC_Run();
GDI:   DiExecContinue()==> DI_OK
<Timeout>
FP: WaitUntilStopped failure begin report.
GDI:   Reading From Memory Address: 0x0100, count: 4, memSpace: 4
GDI:   DiMemoryRead()==> DI_ERR_FATAL
GDI:   DiErrorGetMessage()==> 1
GDI:   Error Message ==> The Debugger can not read memory.
...

I don't understand why this timeout appears.

Can you help me.

JHLG.

[JHLG]

Sorry I forgot:

    - I use "P&E micro USB Multilink" with "True Time Simulator & RealTime Debugger".

    - I have no external oscillator on my PCB (but I can mount one), because i would like to use the internal oscillator.

Thank you.

JHLG.

[JHLG]

No one has an idea.

I continue my research so i can give you more details.

The process of connection with the MCF51AC256B via my  P&E USB BDM Multilink is OK.

And if I well understand : it loads and executes some codes in RAM memory before loads codes in Flash memory.

But when I try to load my .abs file I loose the connection and some Popup message appears :

     - "The debugger can not red memory"

     - "Error while writing to 3FC..5FC"

     - "Error while writing to 40C..60C"

     - "Error loading".

Can someone help me.

Please.

JHLG.

[Kopone]

I am using the same MCU on a project and also with the internal oscillator.

I didnt encounter any similar problems though. Whenever i had odd problems with this project, it always turned out the MCU wasnt properly soldered (by me).

I guess your problem may either lie in your MCU getting halted by the surrounding peripherals or maybe you have a voltage drop during programming. Also the ribbon cable might just be too long or it may be simply be a slack joint.

Regards,

 Sven

[JHLG · Accepted solution]

Thank you for your answer.

But I get an answer from Freescale Support.

They tell me to download and install "CW MCU v6.2 CFV1 AC256A Service Pack" from their website and it works fine now.

Regards.

JH.

[wrljet]

"CW MCU v6.2 CFV1 AC256A Service Pack" worked for me, too. I have a hand-soldered and hand-wired 51AC256A connected to the BDM on the DEMOJM board. Couldn't connect to the debugger until I installed that service pack. Thank you for sharing that tidbid. Bill

[wrljet]

I spoke too soon.

After installing that patch, I theUSB-ML-12 from the DEMOJM board does connect to the

F51AC256, and it can program the Flash.   But the debugger locks up.

I can single step after a reset, for a while, but if I just let it rip it hangs in the ProcessorExpert

supplied startup code.   The debugger says Running.  I click Stop and it stops, in a weird

place.   Then any additional single step, etc. commands it says "The Debugger can not read memory".

Perhaps the USB-ML-12 that's embedded in the DEMOJM can't handle the F51AC256.

One thing's for sure, I'm not buying anything from PE Micro.   Next stop for me is the USBDM.