LPC55S28 Bricked after low power try!

MarcoGiammarini — Thu, 01 Aug 2024 12:58:34 GMT

Hi,

I am trying to develop with LPC55S28 into a custom board. Yesterday I wrote into a RTC register without initilialization and after that I can't reprogram the microcontroller anymore.

I don't know why... I read a lot of threads and article on the web like this: https://mcuoneclipse.com/2022/03/10/recovering-bricked-lpc55sxx-evk-boards/ but nothing works...

The error message when I try to erase the microcontroller is:

Executing flash operation 'Erase' (Erase flash) - Thu Aug 01 14:46:50 CEST 2024 Checking MCU info... Scanning for targets... Executing flash action... SEGGER J-Link Commander V7.84a (Compiled Dec 22 2022 16:13:07) DLL version V7.84a, compiled Dec 22 2022 16:11:39 J-Link Command File read successfully. Processing script file... J-Link>ExitOnError 1 J-Link Commander will now exit on Error J-Link>r J-Link connection not established yet but required for command. Connecting to J-Link via USB...O.K. Firmware: J-Link V12 compiled Jan 24 2024 12:06:13 Hardware version: V12.00 J-Link uptime (since boot): 0d 00h 21m 25s S/N: 602004828 License(s): RDI, FlashBP, FlashDL, JFlash, GDB USB speed mode: High speed (480 MBit/s) VTref=3.606V Target connection not established yet but required for command. Device "LPC55S28" selected. Connecting to target via SWD ConfigTargetSettings() start Disabling flash programming optimizations: Compare, SkipBlankDataOnProg ConfigTargetSettings() end InitTarget() start InitTarget() end Found SW-DP with ID 0x6BA02477 DPIDR: 0x6BA02477 CoreSight SoC-400 or earlier Scanning AP map to find all available APs AP[1]: Stopped AP scan as end of AP map has been reached AP[0]: AHB-AP (IDR: 0x84770001) Iterating through AP map to find AHB-AP to use AP[0]: Skipped. Could not read CPUID register Attach to CPU failed. Executing connect under reset. Failed to power up DAP ConfigTargetSettings() start Disabling flash programming optimizations: Compare, SkipBlankDataOnProg ConfigTargetSettings() end InitTarget() start ERROR: Wrong DM-AP IDCODE detected: 0xFFFFFFFF InitTarget() end Cannot connect to target. Script processing completed. Unable to perform operation! Command failed with exit code 1

What can I do to fix this issue?!

Best

Marco

Re: LPC55S28 Bricked after low power try!

ErichStyger — Thu, 01 Aug 2024 15:43:06 GMT

Hi Marco,

I don't have that board, but the LPC should have some kind of 'ISP' jumper or way to put it into bootloader mode. Have you tried that and load a 'blinky' or something similer from there?

Erich

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LPC55S28 Bricked after low power try!

Re: LPC55S28 Bricked after low power try!