[TriEmbed] new $4 Raspberry Pi
Pete Soper
pete at soper.us
Thu Jan 21 10:26:48 CST 2021
I agree this is absolutely killer. I wonder if with the right physical
interface this could be programmed to handle a LIN bus?(popular with
automotive control systems). Exciting!
On 1/21/21 9:26 AM, Rodney Radford via TriEmbed wrote:
> Scroll down to the section titled "THE PIO: NEVER BITBANG AGAIN" in
> the hackaday article Raspberry Pi Enters Microcontroller Game With $4
> Pico | Hackaday
> <https://hackaday.com/2021/01/20/raspberry-pi-enters-microcontroller-game-with-4-pico/> as
> it does a great job of an overview.
>
> Basically each PIO is a small state machine with it's own register,
> GPIO mapping, IRQ and DMA for building timing specific I/O code.
> Examples given were another uart, or a uart with specific coding, the
> ws2811 protocol, etc. While each of these can be done on the
> eps8266/esp32, the nice thing is it is done by specialized hardware in
> the background so does not take up any MPU cycles. Think of it as a
> simple cpld/fpga state machine built in to the same chip.
>
>
> On Thu, Jan 21, 2021 at 9:16 AM Mauricio Tavares via TriEmbed
> <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
>
> On Thu, Jan 21, 2021 at 9:01 AM Rodney Radford via TriEmbed
> <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
> >
> > And after I sent that, I read more about the programmable PIO on
> the chip and that opens up a lot of other options that make it a
> better choice for some options over the esp8266 and esp32.
> >
> Could you explain the difference to clueless me?
> >
> > On Thu, Jan 21, 2021 at 8:58 AM Rodney Radford
> <ncgadgetry at gmail.com <mailto:ncgadgetry at gmail.com>> wrote:
> >>
> >> The biggest competitors will be the esp8266 and esp32 that
> offer similar specs but already include wifi and a big user
> following, so that may be a hard sale - especially considering the
> very low prices of some of the variants direct from China now.
> >>
> >> On Thu, Jan 21, 2021 at 8:50 AM Mark Sidell via TriEmbed
> <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
> >>>
> >>> Of course, it's not exactly a pi. More like a pi-ish Arduino,
> perhaps. Hackaday did a nice write-up:
> https://hackaday.com/2021/01/20/raspberry-pi-enters-microcontroller-game-with-4-pico/
> <https://hackaday.com/2021/01/20/raspberry-pi-enters-microcontroller-game-with-4-pico/>
> >>>
> >>> On Thu, Jan 21, 2021 at 8:21 AM John Vaughters via TriEmbed
> <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
> >>>>
> >>>> competition for arduino?
> >>>>
> >>>> 3 ADCs is nice and super flexible I/O definition possibilities.
> >>>>
> >>>> all for $4
> >>>>
> >>>> very impressive.
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> On Thursday, January 21, 2021, 8:07:32 AM EST, Pete Soper via
> TriEmbed <triembed at triembed.org <mailto:triembed at triembed.org>> wrote:
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> https://www.raspberrypi.org/products/raspberry-pi-pico/
> <https://www.raspberrypi.org/products/raspberry-pi-pico/>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> Pete
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
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