Add Espressif C5 devkit #835
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brentru
requested changes
Nov 7, 2025
| with: | ||
| repository: adafruit/ci-arduino | ||
| ref: ci-wippersnapper | ||
| ref: ci-wippersnapper-esp333 |
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If we are going to use this branch, across this ci, shouldn't we merge the esp333 work into ci-wippersnapper and use that instead?
| with: | ||
| repository: adafruit/Wippersnapper_Boards | ||
| path: ws-boards | ||
| ref: add-c5devkit |
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Will this ref be removed after the boards repo PR is merged?
| - name: Rename build artifacts to reflect the platform name | ||
| run: | | ||
| mv examples/Wippersnapper_demo/build/*/Wippersnapper_demo.ino.bin wippersnapper.${{ matrix.arduino-platform }}.littlefs.${{ env.WS_VERSION }}.bin | ||
| # mv examples/Wippersnapper_demo/build/*/Wippersnapper_demo.ino.merged.bin wippersnapper.${{ matrix.arduino-platform }}.littlefs.${{ env.WS_VERSION }}.auto-merge.bin |
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| with: | ||
| repository: adafruit/Wippersnapper_Boards | ||
| path: ws-boards | ||
| ref: add-c5devkit |
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Make sure to change this when the ws-boards branch is merged please!
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This adds the C5 devkit, with 2.4GHz and 5GHz WiFi 6 support.
The C5 flashed fine with platformio but had a similar issue flashing CI assets to the C6 generated when esptool wasn't pinned. Also now that we aren't pinned for lvgl, it felt like a good time to revisit using the latest BSP and ESPtool, previously held up by the flash args issue for the C6.
Our merged bin was suggested (by Jason8266) as having the wrong flash args causing the ets loader issue when using latest esptool, and looking at the arduino-IDE output for the C5 instead it uses "keep" as the args after the initial setup of the bootloader and app partition. I thought I'd tried that before with the C6 although I might have had other issues too then.
There was a mismatch with boot mode DIO and flash mode QIO which the c5 uses, compared to our fixed merge-bin command that uses a single argument. The arduino IDE generates bootloader.bin using
esptool elf2imagefrom a qio_80m.elf bootloader, but using DIO flash mode arg to that command, even though flash mode was QIO from the FQBN string - checking deeper it needs DIO for boot flash mode)I've tested the Feather C6 and Espressif C5 devkit, using the combined.bin from CI assets after an erase. (Both now use esptool 5.1.0 instead of 4.6, with "keep" for the flash args to merge-bin, and every esp32 board is moved to BSP 3.3.3 instead of ~3.1)
Boards Repo PR:
adafruit/Wippersnapper_Boards#222
CI Arduino Branch:
https://github.com/adafruit/ci-arduino/tree/ci-wippersnapper-esp333 [Pointed at adafruit/arduino-esp32 BSP3.3.3]