Open source the STM32 firmware and make it upgradable

[fonix232]

So, the STM32 firmware on these devices has a few bugs. I'd gladly correct them, but alas, there's no source code published, and there's no documented way of upgrading it either.

I do see that there's a firmware version checking, so there must be a way to also update the firmware via the I2C bus. I do hope this is already implemented and there isn't a need to have hundreds of Echo/Voice Pyramids to be taken apart, SWD header soldered, and ST-Link flashed...

So, to make the most of this device, I'd kindly ask you M5 guys to release the source for the STM32 co-processor firmware.

[Ocean-lhy]

Hi @fonix232 ,

First of all, thank you so much for your feedback and your willingness to contribute to the open-source community! We really appreciate developers like you helping us improve our products.

You are absolutely right about the upgrade method. The firmware can indeed be upgraded directly via the I2C bus, so there is no need for users to tear down the device or solder SWD headers.

We are currently preparing the code and documentation. We plan to officially open-source the STM32 firmware for the Echo Pyramid within a month.

We will update this issue once the repository is public. Stay tuned, and thanks again for your patience and support!