[Tinkerphones] Dual personality systems (was Re: ZeroPhone site offline)

[David Boddie]

On Mon Jan 10 07:33:35 CET 2022, marc marcxoe wrote:

> I have no affiliation with mudita.com (I just read about them online):
> 
> It seems they have a very small smartphone stack for which the
> source has been released (license terms I did not look into)
> running on a rather small processor. 

The license looks like GPL v3 for MuditaOS itself. Third party code with
other licenses is listed here, too:

https://github.com/mudita/MuditaOS/blob/master/LICENSE.md

The OS appears to be based on FreeRTOS.

The Mudita Pure phone uses an i.MX RT1051 MCU:

https://mudita.com/store/mudita-pure-minimalist-phone/

NXP call it a crossover MCU, which means (to me) that it looks like a cross
between a microcontroller and a system on a chip. It's a Cortex-M7-based
processor which is quite a bit more powerful than the Cortex-M4 ones I've
been looking at recently.

You can get an idea of how processors based on Cortex-M series cores have
evolved by looking at the Teensy series of boards:

https://www.pjrc.com/teensy/techspecs.html

David