That $4 dev board looks like it might be an esp32 killer, or at least good competition. I was thinking of the esp32-c3 which is also risc-v with wifi and ble. It currently has really great rust support. You can even build the stdlib for it so you don't have to mess with no_std. The bl602 doesn't seem to have rust support yet, but I'm looking forward to more options.

Note esp32-c6 is already available. e.g. ESP32-C6-DevKitC-1-N8.

It has rust support.

> I was thinking of the esp32-c3 which is also risc-v with wifi and ble.

I have a couple of the Pine64 boards that run Linux. Unless something changed, it doesn't have WiFi or BLE support, and likely never will.

> The bl602 doesn't seem to have rust support yet, but I'm looking forward to more options.

I think it does: https://github.com/bouffalolab/bl-pac/tree/main/bl808

Thanks! It wasn't on the awsome rust embedded github yet, but when I dig in I found it. The bl602 does support wifi, but only 2.4 and I presume at lower rates. It definitely doesn't run linux though. But I wouldn't put it past someone to figure out a way.

> t definitely doesn't run linux though.

Sorry I was thinking of the 0x64, although it's entirely possible to get some form of Linux running.

Does that have any documentation? Or am I looking in the wrong places for it?

Try github[0]. There's a community around this chip, with repos dedicated to collecting the documentation and code the vendor itself wouldn't provide, or would require filling request forms to obtain.

It tends to be like this with Chinese chips, and often times western ones too, unfortunately.

0. https://github.com/search?q=bl602&type=repositories