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Cannot connect to LPC55S69 chip #1802

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#1823
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Cannot connect to LPC55S69 chip#1802
#1823
@spcan

Description

@spcan
spcan
opened on Oct 6, 2023

Describe the bug

Any attempt to flash to LPC55S69 device with cargo-flash results in one of two errors:

Without --connect-under-reset:

        WARN probe_rs::config::target > Using custom sequence for LPC55S16/26/28/66/69
       Error Connecting to the chip was unsuccessful.

  Caused by:  
          0: An ARM specific error occurred.
          1: Error using access port
          2: Failed to read register DRW at address 0x0000000c
          3: An error occurred in the communication with an access port or debug port.
          4: Target device did not respond to request.

        Hint A hard reset during attaching might help. This will reset the entire chip. Run with `--connect-under-reset` to enable this feature.

With --connect-under-reset:

       Error Connecting to the chip was unsuccessful.

  Caused by:  
          0: An ARM specific error occurred.
          1: An error occurred in the communication with an access port or debug port.
          2: Target device did not respond to request.

Using probe-rs from code also fails with the same error, as well as any other probe-rs tool.

To Reproduce
Steps to reproduce the behavior:

  1. Connect an LPC22S69 to a debugger
  2. Attempt to connect to it (or flash it, or debug it) with any probe-rs tool (VSCode, flash, embed, run, cli, with custom code, etc...)

Expected behavior
Being able to flash and/or debug the device

Stacktrace
N/A

Desktop (please complete the following information):

  • Linux Ubuntu

Additional context
Using non-EVK board (OKDO E1)

Activity

spcan
added
bug
on Oct 6, 2023
Yatekii

Yatekii commented on Oct 6, 2023

@Yatekii
Yatekii
on Oct 6, 2023
Member

Considering the device does not respond at all, are you sure its all wired ip correctly?

spcan

spcan commented on Oct 10, 2023

@spcan
spcan
on Oct 10, 2023
Author

probe-rs is only connected to the on-board debugger theough USB. This debugger is a CMSIS-DAP debugger using an LPC11U35

It seems like somehow the SWD debugger interface got disabled at some point, because previously I was able to fully debug and access it. Is there a recovery process in probe-rs for this? Or does the LPC55S69 debug sequence include a way to unlock the device?

sefidel

sefidel commented on Oct 15, 2023

@sefidel
sefidel
on Oct 15, 2023
Contributor

I'm having the same issue with LPCXpresso55S69 development board.

Trace log: https://gist.github.com/sefidel/c7221448e0a923d5bbf0eb5b269428bd

Tiwalun
mentioned this on Oct 15, 2023
Tiwalun

Tiwalun commented on Oct 15, 2023

@Tiwalun
Tiwalun
on Oct 15, 2023
Member

Please try the fix in #1823, that should fix this as long as you don't need access to the second core.

Yatekii
closed this as completedin #1823on Oct 15, 2023
spcan

spcan commented on Oct 17, 2023

@spcan
spcan
on Oct 17, 2023
Author

This fixes probe-rs debug as it can now attach and debug the target correctly, but flashing does still not work

Both probe-rs run and cargo flash fail with the error

        WARN probe_rs::config::target > Using custom sequence for LPC55S16/26/28/66/69
     Erasing sectors ⠁ [00:00:00] [#################################################################################################################]      0 B/     0 B @      0 B/s (eta 0s )

Error Trying to write flash, but no suitable (default) flash loader algorithm is linked to the given target: LPC55S69JBD100 .

  Caused by:  
          0: Trying to write flash, but no suitable (default) flash loader algorithm is linked to the given target: LPC55S69JBD100 .
Tiwalun
mentioned this on Oct 18, 2023
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    Issue actions
      Cannot connect to LPC55S69 chip · Issue #1802 · probe-rs/probe-rs