Communication error while accessing MDM-AP.

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Communication error while accessing MDM-AP.

8,275件の閲覧回数
dittoxia
Contributor I
Dear :
    We are using MKE15Z256VLL7 microcontroller,But encounter problems.
MCU suddenly can not download the program.list is the JLink.exe`s log:
 
Connecting ...
 - Connecting via USB to J-Link device 0  - Target interface speed: 4000 kHz (Fixed)  - VTarget = 4.962V  - ERROR: Kinetis (connect): Communication error while accessing MDM-AP.  - ERROR: Failed to connect. Could not establish a connection to target.
We suspect that MCU is locked up,So we're trying to unlock it,Here is our way to unlock and screenshots.
粘贴图片(1).png
粘贴图片(1).png
粘贴图片(2).png
Eager for your help, thank you!
 
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2 返答(返信)

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randyseedle
Contributor III

My version of the jlink directory is different and does not have an erase_all_pin.jlk . I have versions:

C:\Program Files (x86)\SEGGER\JLink_V642b

and

C:\Program Files (x86)\SEGGER\JLink_V644f

Is there some other option to accomplish this task ??

 

 

---------------------------------------------

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Randy>cd \program files <86>\JLinkARM_V412>
The syntax of the command is incorrect.

C:\Users\Randy>cd \program files <86>\
The system cannot find the file specified.

C:\Users\Randy>cd \

C:\>cd \Program Files

C:\Program Files>cd ..

C:\>cd \Program Files <86>\segger
The system cannot find the file specified.

C:\>cd \Program Files <86>\
The system cannot find the file specified.

C:\>cd C:\Program Files (x86)\SEGGER

C:\Program Files (x86)\SEGGER>cd C:\Program Files (x86)\SEGGER\JLink_V644f

C:\Program Files (x86)\SEGGER\JLink_V644f>jlink.exe erase_all_pin.jlk
SEGGER J-Link Commander V6.44f (Compiled Apr 12 2019 17:17:37)
DLL version V6.44f, compiled Apr 12 2019 17:17:02

Unknown command line option erase_all_pin.jlk.

C:\Program Files (x86)\SEGGER\JLink_V644f>cd C:\Program Files (x86)\SEGGER\JLink
_V642b

C:\Program Files (x86)\SEGGER\JLink_V642b>jlink.exe erase_all_pin.jlk
SEGGER J-Link Commander V6.42b (Compiled Feb 5 2019 17:33:07)
DLL version V6.42b, compiled Feb 5 2019 17:31:40

Unknown command line option erase_all_pin.jlk.

C:\Program Files (x86)\SEGGER\JLink_V642b>

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Hui_Ma
NXP TechSupport
NXP TechSupport

Hi

Please refer attached document about how to unlock the Kinetis chip.

Customer could follow the step 6: Using Erase_all_pin.jlk script with J-Link tool.


Wish it helps.

Have a great day,
Ma Hui
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