Use stub binaries from esptool.py v4.5.dev1-2-g32e801484

[igrr]

• Update the stubs, fixing the issue that the stub was not responding after uploading over USB_SERIAL_JTAG (Flash error with ESP32-C3 via USB_SERIAL_JTAG: Timeout #41 (comment))
• Use original unmodified stub json files from esptool, simplifying future updates.
• Bundle the json files and import them into target-specific files.
• Note: stub text segment is no longer compressed, which increases the distribution size, somewhat. However this should be mitigated if the bundle is gzipped.

Testing

Can be tested at https://igrr.github.io/esptool-js/.

I've tested this on:

• ESP32 with FT2232
• ESP32-C3 with CP2102
• ESP32-C3 with USB_SERIAL_JTAG
• ESP32-S3 with USB_SERIAL_JTAG
• ESP32-S2 with CP2102
• ESP32-S2 with built-in USB_CDC — fails, but also fails in the main branch (Connect ESP32-S2 built-in USB_CDC Error: Timeout #38)

Tested by connecting and flashing a single 1.3 MB binary.

[liux-pro]

Please note that recently there is an issue about esptool-v4.4, esp32s3, stub firmware.
esptool-v4.4 may be unstable.
espressif/esp-idf#10431

[igrr]

I see, thanks for the heads-up. I might downgrade to v4.3 then since v4.5 isn't released yet.

[brianignacio5]

PR LGTM !

[adwait-esp]

LGTM

[igrr]

After checking with esptool.py maintainers, have decided to upgrade to the latest commit espressif/esptool@32e8014. It fixes one issue with the stub for USB_SERIAL_JTAG.

[igrr]

Have re-tested with the new stub, seems to work okay. I have one ESP32-S3 board with a CP2102 with which I get a timeout during flashing, but another similar ESP32-S3 & CP2102 board works fine. I think I'll merge this anyway, and investigate that issue separately (it might be the same as #47).