Hi Dan,
thank you to share your project, really nice :)
I saw that you used the standard pocketbeagle. I also noticed that you are
the author of a hackday.io article about the PMU inside the pocketbeagle
which I'm also interested in that.
Like you, I also have a project that uses the Rpi zero, and I needed to
stop working on that due to the workarounds that I had to do to make it a
portable system. The Rpi doesn't support any kind of low power modes
(sleep, suspend to RAM ...), doesn't have PMU and we have to use SPI or
HDMI to drive an LCD display which is a problem in performance, and power
efficiency.
I saw on the beagleboards a light because we have the PMU, and an LCD
driver ready to use without any proprietary firmware, I don't need HDMI
output and I don't want to waste power to feed HDMI IC's. Everything with a
trully open hardware system is a dream! Also with the Octavo system in a
package, I could design a more professional system without been too complex
for a hobbyist point of view, and maybe I could even try to solder the BGA
chip myself. So, now I have space to work in my software and If everything
goes well I could even try to go to a customized board.
So, the pocketbeagle seemed a good start to work, but the lack of the LCD
pins and the things that you mentioned in your article about the PMU really
broke my legs. The BBB (standard, and Wireless) are big boards, has many
things that I don't need and will consume my power resources. Would be a
good addition to have wifi (and switch it off when it is not needed), but
the wireless version doesn't have wifi when working on battery
When my boards arrive, next week, I will work on the BBB wireless before,
and in the future, I will try to hook some wires from the resistors that
configure the boot, and see if I can drive an RGB LCD. I really don't want
to go to SPI LCD's for now, maybe just to try.
Have a good weekend.
Best regards,
Em sábado, 6 de julho de 2019 16:43:17 UTC+2, Dan Julio escreveu:
>
> Although it isn't the 4.3" CAPE, I have gotten a generic and inexpensive
> 2.8" ILI9348-based SPI display to work with the Pocketbeagle (and
> Beaglebone black). It seems reasonably fast although I'm sure not as fast
> as the parallel display. I haven't yet gotten the built-in TSC2046
> resistive touch controller to work yet. I've attached the dts file for the
> display. You can see how I wired it up at the following github page:
>
> https://github.com/danjulio/lepton/tree/master/pocketbeagle
>
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