pyOCD: Failures when testing programmers with pyocd and the puya py32

Summary

      I recently bought a stack of puya py32 mcu’s after reading this article

       I’ve been testing them out using the SDK here

       I noticed that many of my daplinks and other probes fail to connect        to this mcu with pyocd [and openocd, though I didn’t test it as        thoroughly] when using the pack file provided by the vendor here

       I have a stack of different probes and mcu’s running daplink        firmwares, and only one of them works OK. Most of the        daplinks fail with:

pyocd.core.exceptions.TransferError: Unexpected ACK value (5) returned by probe

Method

      To ensure the probes are working OK, I tested each on an STM32F103C8       mcu, as well as with a Puya PY32F002AL15. I figured the STM should be a       good control test, as it’s a very well supported and commonplace mature       product.

      I’m running pycod 0.34.3.dev36 – though I did also test .34.3 release as       well with identical results.

      My OS is Ubuntu lunar (dev), on linux 5.18.13

      I prepared a firmware for each mcu, and programmed it with the following       commands:

STM32:

$ pyocd erase --chip -t stm32f103c8; pyocd load -t stm32f103c8 ./miniblink.bin

PY32:

$ pyocd load ./Build/example-blink.hex -t py32f002x5 --config ./Misc/pyocd.yaml

      (the config file simply loads the pack file from the vendor)

$ cat pyocd.yaml
pack:
\- Misc/Puya.PY32F0xx_DFP.1.1.3.pack

Results table

Probe	STM32	PY32
DAPLinks
jixin.pro DAPLINK	works	works
rp2040 picoprobe-cmsis-v1.0.2	works	Unexpected ACK value (5)
rp2040 DapperMime	works	Unexpected ACK value (5)
DAPLink clear	works	Unexpected ACK value (5)
WCHLink	Unexpected ACK value (5)	Unexpected ACK value (5)
CH552 CMSIS-DAP	works	TransferTimeoutError
STLinks
STLinkV2 – baite	STLink error (9): Get IDCODE error	STLink error (9): Get IDCODE error
STLinkV2 - metal	works	STLink error (9): Get IDCODE error
JLinks
JlinkOB – baite	works	Memory transfer fault (Unspecified error.)
JlinkOB 072 – baite	works	RecursionError: maximum recursion depth exceeded

Details: Programmers.odt Details from each probe are in the comments below