How to recover a bricked 1052 dev board.

[brianrothwell]

I have "bricked" my IMX-RT 1052 dev board with an image i loaded to HyperFlash.   At this point, I am unable to get the JTAG to connect anymore (the center and upstream lights are on solid).     Any suggestions on how to get past this.  I was thinking that if i loaded an SD card with blinky and booted from SD card, i could then re-flash the Hyperflash.  Would that possibly work?  The next question is what is the easiest strategy to create such a card?  

[brianrothwell]

The output during connection is:

C:\Program Files (x86)\SEGGER\JLink_V644g\JLinkGDBServerCL.exe -select USB -device MIMXRT1052DVL6B -speed auto -if JTAG -port 51857
SEGGER J-Link GDB Server V6.44g Command Line Version

JLinkARM.dll V6.44g (DLL compiled Apr 18 2019 17:12:10)

Command line: -select USB -device MIMXRT1052DVL6B -speed auto -if JTAG -port 51857
-----GDB Server start settings-----
GDBInit file:                  none
GDB Server Listening port:     51857
SWO raw output listening port: 2332
Terminal I/O port:             2333
Accept remote connection:      localhost only
Generate logfile:              off
Verify download:               off
Init regs on start:            off
Silent mode:                   off
Single run mode:               off
Target connection timeout:     0 ms
------J-Link related settings------
J-Link Host interface:         USB
J-Link script:                 none
J-Link settings file:          none
------Target related settings------
Target device:                 MIMXRT1052DVL6B
Target interface:              JTAG
Target interface speed:        auto
Target endian:                 little

Connecting to J-Link...
J-Link is connected.
Firmware: J-Link Pro V4 compiled Mar 21 2019 15:44:44
Hardware: V4.00
S/N: 174504735
Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
Checking target voltage...
Target voltage: 3.31 V
Listening on TCP/IP port 51857
Connecting to target...ERROR: Could not connect to target.
Target connection failed. GDBServer will be closed...Restoring target state and closing J-Link connection...
Shutting down...
Could not connect to target.
Please check power, connection and settings.

[jeremyzhou]

Hi Brian Rothwell,

Thanks for your reply.

Please use the SWD instead of JTAG, then give it a try.
Have a great day,
TIC

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[brianrothwell]

Hi Jeremy,

Thanks for your advice. I switched to SWD and erased the flash. Was then able to run again from JTAG.

Brian

[jeremyzhou]

Hi Brian Rothwell,

Thanks for your reply.
Q1) Was then able to run again from JTAG.
-- No, I'm afraid not, as the JTAG is default disabled.

Have a great day,
TIC

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[jeremyzhou]

Hi Brian Rothwell,

Thank you for your interest in NXP Semiconductor products and
for the opportunity to serve you.
Before answering your question, I've some inquiries that need to confirm with you.
1. Do you use the onboard debugger: OpenSDA or use an external debugger?
2. The i.MX RT 1052 become 'bricked', whether you mean that the debugger fails to recognize its core.
3. Does the 'bricked' i.MX RT 1052 can still enter Serial Downloader mode?
Have a great day,
TIC

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[brianrothwell]

Hi Jeremy,

Hello Jeremy,

1. I am using a Segger Jlink Pro debugger and running from Windows.

My symptoms are that the I connect to the Jlink debugger, but that the GdbServer cannot connect to the board.

I have been unable to get the flash tool to even erase the flash. The attached screen shot show the condition:

I am unable to re-program or even erase the flash. When I attempt to erase the flashusing the GUI flash tool I get:

Executing flash operator ‘Erase’ ( erase flash ) … current date

Checking MCU info …

Scanning for targets …

Executing flash action …

Then the MCUExpresso IDE remains locked up and I have to kill using task manager

1. I have tried multiple switch positions on the SW7 boot selection switch, but symptoms remain the same.

1. If you don’t have any suggestions, I think my next step is to get another board and program an SD card to run blinkly or such, then try to get the bricked board to boot from it.

Thanks for the interest,

Brian

[jeremyzhou]

Hi Brian Rothwell,

Thanks for your reply.
Firstly, I don't find the screenshot I mentioned, so I think you should
re-upload it.
Then, whether the Jlink can detect the i.MX RT1050 in the J-Link Commander.

Fig 1

Have a great day,
TIC

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