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Adds betaflight passthrough flashing for S3/C3 #2714

merged 2 commits into from
Jun 1, 2024


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@pkendall64 pkendall64 commented May 20, 2024


The esptool driver calls a function to get the "Security Info" from the C3 and S3 variants of the ESP32. This was not implemented in our version of the serial updater.


Implemented the call to the ROM function in the same manner as the stub driver used by the esptool code.


You will need to flash this via UART or Wifi before testing upload via BetaflightPassthorugh. Luckily there aren't any C3 targets... yet.

@pkendall64 pkendall64 added enhancement 🪄 New feature or request V3.5 🍩 labels May 20, 2024
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Luckily there aren't any C3 targets... yet.

leans over and grabs S3 and C3 dev hardware

Flashed everything via uart and tested connectivity with BF.

Then everything flashed successfully with passthrough.

@JyeSmith JyeSmith merged commit 2cab1cb into ExpressLRS:master Jun 1, 2024
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@pkendall64 pkendall64 deleted the next/c3-s3-passthrough branch June 1, 2024 02:27
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enhancement 🪄 New feature or request V3.5 🍩
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3 participants