Not able to mass erase/flash after running AN12255SW Flash Remap

[schafbo]

After running the example AN12255SW "Flash Remap Test" in MCUXpresso, I'm not able to reflash my RT106x. Also I'm not able to do a mass erase in order to reprogram again. I'm using an MCU-Link (LinkServer) debugger with MCUXpresso. Any attempt to program/mass erase shows that 0 SWD devices are connected, then I receive the following serial output when performing a mass erase:

Executing flash operation 'Erase' (Erase flash) - Fri Jan 10 08:57:39 CST 2025
Checking MCU info...
Scanning for targets...
Executing flash action...
MCUXpresso IDE RedlinkMulti Driver v11.10 (Jul 2 2024 19:33:51 - crt_emu_cm_redlink.exe build 741)
( 0) Reading remote configuration
Wc(03). No cache support.
Found chip XML file in C:/Users/.../workspace/flash_remap_test/Debug\MIMXRT1062xxxxA.xml
( 5) Remote configuration complete
Reconnected to existing LinkServer process.
Connecting to probe 1 core 0 (using server started externally) reports:
'Ee(42). Could not connect to core.'
Retrying...
Reconnected to existing LinkServer process.
Server OK but no connection to probe 1 core 0 (after 3 attempts) - Ee(42). Could not connect to core.
============= SCRIPT: RT1060_connect.scp =============
RT1060 Connect Script
DpID = 0BD11477
Error: Wire Ack Fault - target connected?
Error: Wire Ack Fault - target connected?
Disabling MPU
Error: Wire Ack Fault - target connected?
Error: Wire Ack Fault - target connected?
Configure FlexRAM for 768KB OC RAM, 128KB I-TCM, 128KB D-TCM
Error: Wire Ack Fault - target connected?
Error: Wire Ack Fault - target connected?
Error: Wire Ack Fault - target connected?
Finished
============= END SCRIPT =============================
Failed on connect: Ee(42). Could not connect to core.
No connection to chip's debug port
(100) Target Operation Failed
Unable to perform operation!
Command failed with exit code 1

I've encountered problems reflashing before, but usually this is solved by erasing the chip and then programming again.. is there a way to recover from this and test AN12255SW again?

Thanks

[schafbo]

Nevermind, I see that LPUART1 is used. After setting the boot mode pins I was able to set the MCU into serial download, then reset and program again. Thanks!

[diego_charles]

Hi @schafbo 

Thank you for letting us know! I am glad that you can keep developing. 

Diego

[schafbo]

Diego,

I'm not using an eval board, but the boot mode pins can be set to serial download with some effort. I am using the process outlined in the doc "Recover_RT1064". Is there a specific UART line on the MCU that I need to use, or it can work with any of them?

[diego_charles · Accepted solution]

Hi @schafbo 

Have you tried an erase when the MCU is in serial  downloader mode? If SWD keeps failing, please try to do a recover using MCUXpresso Secure Provisionining Tool, this tool sends erase commands over UART/USB.

Please let me know your results. 

Diego