I don't know what that is, so I searched for "DMA subframe", yet couldn't find a decent explanation. Do you have a link or something?

That depends on the server you use, of course - nginx, apache, whatever. But OpenSSL only recently added support for that extension, so its possible that yours doesn't support it yet.

I once worked around this issue by using BearSSL (see https://github.com/MrBuddyCasino/ESP32_Alexa/). You get ownership of the buffer, and thus don't have to copy. Its not trivial though, and I can't give any assistance. Another option to safe memory is to not use a threading model, but an event rea...

Props for figuring all this stuff out. Its appreciated.

Nice! Had some trouble flashing BMP to a Blue Pill due to 64k flash limit, this would have saved me some time. Is the port feature complete?

Look at the antenna feed points, the two bright spots on the black antenna part. In Pos 3 & 4, they are at the edge of the board, in all others they are in the middle of the PCB.

Deouss wrote:but they are not so great comparing to ESP32

Can you expand?

On a side note, is it possible to have the I2S driver send silence instead of the last buffer if it receives no data in time? I've yet to come across a situation where a buffer underrun doesn't result in annoying buzzes. Silence would definitely be the preferred output if there's no data. +1 for that

I had three boards die on me before. The usb-to-serial chip suddenly got very hot, maybe because of some unlucky connection I made, and then it remained dead.

Can you make a pull request on Github?