Re: Recommended dev board for beginner

On Wed, 11 Jan 2023 23:22:08 +0100
Milan Obuch <freebsd-embedded@dino.sk> wrote:

> On Thu, 12 Jan 2023 00:18:40 +0300
> Lev Serebryakov <lev@FreeBSD.org> wrote:
> 
> > On 10.01.2023 11:32, Dmitry Salychev wrote:
> >   
> > > I'd recommend BeagleBone Black. It's relatively cheap, powerful,
> > > easy to boot FreeBSD, got a lot of GPIO pins and even two 32-bit
> > > 200 MHz microcontrollers in addition to the main processor.    
> > 
> >   Are here any instructions how to provide firmware for these
> > microcontrollers from booted FreeBSD and communicate with them?
> >   
> 
> # cat /usr/ports/devel/libpru/pkg-descr 
> libpru is a library to interface with Programmable Realtime Units on
> FreeBSD. Currently only the Texas Instruments PRUs are
> supported. Those can be found in the AM18XX and AM33XX (BeagleBone
> Black) SoCs.
> 
> # cat /usr/ports/devel/pructl/pkg-descr
> pructl is a tool to interface with libpru.
> It allows the user to reset the PRU, enable/disable the PRU and to
> upload programs to the PRU.
> 
> Disclaimer: I did not test it, yet. That's what I found most probably
> relevant.
> 
> How to write and compile/build programs for PRUs is not yet clear to
> me, TI's official page is to be found at their page -
> https://www.ti.com/tool/PRU-ICSS-INDUSTRIAL-SW - maybe someone could
> create something from it, I did not search any further.
> 
> Regards,
> Milan
> 

Also, I found https:://github.com/dinuxbg/gnupru - port of gcc and
binutils for the TI PRU I/O processor. That's basically shell script
for building gcc targetiing PRU. Maybe someone can create a port for it
the way devel/gcc-arm-embedded and devel/gcc-msp430-ti-toolchain are
done. I think with this everything for creating/managing binaries for
PRUs could be done on FreeBSD.

Regards,
Milan