Easy ESP32 flashing!

[gfwilliams]

Posted at 2024-12-13 by @gfwilliams

Just to let you know I added the ESP32 web flasher to the Espruino website so you can now easily install the ESP32 firmware.

https://www.espruino.com/Espressif+Flash

It should work on ESP32/ESP32C3/ESP32S3 and ESP8266 - but I've only added ESP32C3 builds since 2v25.

The tools used are these ones: https://esphome.github.io/esp-web-tools/

[espruino-discuss3]

Posted at 2025-01-12 by @MaBecker

Many thanks for making this available!

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Posted at 2025-01-13 by @yerpj

fantastic!

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Posted at 2025-01-14 by @yerpj

2v25 seems not to support ESP32C3 as far as I can see
Your ESP32-C3 board is not supported.

Anyone had success flashing a C3?

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Posted at 2025-01-15 by @gfwilliams

Ahh, sorry - just checked and the manifest file was missing a hyphen so it wanted ESP32-C3 and not ESP32C3

Just tweaked it and it works now - you'll have to make sure you refresh the page so https://www.espruino.com/binaries/espruino_2v25_espressif_manifest.json picks up the correct hyphenation

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Posted at 2025-01-15 by @yerpj

That's great, now it works, thank you very much!

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Posted at 2025-02-05 by @SimonGAndrews

only just saw this. Very Neat.
Thanks @gfwilliams

[mkie]

Any hope that ESP32-C6 will be added too?
Tried today (selecting "Espruino 2v25") but:
Your ESP32-C6 board is not supported :(

[gfwilliams]

I'm afraid we don't have builds for the C6 yet. I could be wrong but I think that the C6 isn't supported by ESP32 IDF4 (we'd need to move to 5) and while some folks have looked at it, Espressif changed some things (mainly the network handling) that I think would require a rewrite of that part of Espruino for us to upgrade

[mkie]

Thx for your answer! Sounds like it will take some time before an upgrade will be available.
So I have to be patient - or try Espruino with another board in the meantime because I really like the idea to use JavaScript on a microcontroller!

[SimonGAndrews]

Hi , @gfwilliams Whats the schedule for the updates to sources for the //www.espruino.com/Espressif+Flash) . Like today there was a commit on the ESP build code when does that become available on the flasher.
Thanks, Simon
PS this really is a great tool V easy to flash devices. Put your donation links on there ;)

[gfwilliams]

There isn't an option there for 'cutting edge' builds (the ones built from GitHub master) so it's just when I do the next numbered firmware release. I did one a few days ago so it might be a month or more before I do the next one.

In theory there could be an option for cutting edge (https://www.espruino.com/binaries/travis/master/) but right now that webpage uses espressif_manifest.json files like https://www.espruino.com/binaries/espruino_2v29_espressif_manifest.json which are created for each release (as well as decompressed tgz files), and so they would have to be decompressed and injected files directly into the flasher which I'm not sure is possible.

It's not something I really have time for - the flasher is there to make life easy for people installing Espruino on ESP32, but those people (IMO) are also the least likely to want to play around with the absolute latest firmwares so it doesn't seem quite as important.

[SimonGAndrews]

Thanks ,ok it’s good to understand the available version there. It’s very useful as the latest release flasher as it is. All makes sense. Thanks again.

[SimonGAndrews]

I have built a version of the ESP Flasher localESPFlasher (with the help of OpenAI Codex) to provide developers with a tool for quickly sanity-testing Espruino build changes, both from local builds and from Espruino pull request artifacts. Hopefully it will be useful and work for others also.

@gfwilliams and @MaBecker . Gordon thanks for the lead above.