esp32s2 programmer failed after second run on j4m6

[phantomxe]

I got some error message at try to program ch32v003's 8-pin package. It works on fresh chip but crashes when i try to upload new code.

Found ESP32S2 Programmer
Error: Setup chip failed. Got code ffffffff
Could not setup interface.

I also tried minichlink -u mode.

Found ESP32S2 Programmer
Entering Unbrick Mode
Connection starting
/0/ffffffff
/0/ffffffff
...
lots of ffffffff
...
ioctl (GFEATURE): Connection timed out
Error: Got error -1 when sending hid feature report.
Error: Flash is not unlocked (CTLR = ffeffdff)

[dwillmore]

Have you tried using the "-u" option of minichlink? You need to let the programmer control power to the target if you aren't already.

[phantomxe]

I added power control circuit with pair of mosfets to GPIO11 and tried minichlink -u again.

Found ESP32S2 Programmer
Entering Unbrick Mode
Connection starting
/0/ffffffff
/0/ffffffff
/0/ffffffff
/0/ffffffff
/0/ffffffff
/0/ffffffff
/0/004c0c82
Flash unlocked
Whole-chip erase
Whole Chip Erase Code: 0

Seems to work. But when i try to program, it's not working.

Found ESP32S2 Programmer
Error: Setup chip failed. Got code ffffffff
Could not setup interface.

[cnlohr]

Two thoughts:

1. I have seen situations where the whole-chip erase was unsuccessful - can you try minichlink -ua If that works, let me know and I can make that default behavior.
2. Can you hook it up to a logic analyzer?

[phantomxe]

minichlink -ua worked! I can reprogram chip without any issues now.