ESP32 USB DFU Bootloader

[boarchuz]

https://github.com/boarchuz/bo_dfu

Bitbanged USB Low Speed and DFU for the ESP32 2nd-stage bootloader. It works surprisingly well, give it a try! It's surreal plugging my ESP32 into my phone and updating it in a web browser (when WebUSB decides to work, at least).

Some ideas: enable OTA updates without needing all of the WiFi/BT stack in every application; provide a user-friendly update/recovery method without needing a USB-UART chip on every board; provide a recovery mechanism for bricked devices with no bootable app partitions; enable OTA updates even with a single huge app partition.

[DrMickeyLauer]

This is an amazing achievement. I wonder about the possibilities we now have…

[chegewara]

I am wondering when espressif start advertising ESP32 as USB capable, like they did with bluetooth and after adding ble mesh ESP32 become bluetooth 5.0 certified.