[Arm-netbook] Handheld Games Console

[Daniel Iglesias]

Hello there, sorry for not writing for so long. What would you recommend as
the next step now? As I told Miguel privately, I was thinking of getting an
STM32 evaluation board (they're really cheap, <15€ IIRC) and building the
USB controller prototype. Once we have the STM32 reading all the values
from the potentiometers, pushbuttons, etc. and reporting them over USB as a
HID we would go ahead and design PCBs 2 and 3. How does this sound? Should
we skip the eval board thing and go straight to designing the PCBs?

2015-09-23 19:44 GMT+02:00 Luke Kenneth Casson Leighton <lkcl at lkcl.net>:

> On Wed, Sep 23, 2015 at 4:31 PM, GaCuest <gacuest at gmail.com> wrote:
> > En 23 de septiembre de 2015 en 17:13:37, Luke Kenneth Casson Leighton (
> lkcl at lkcl.net) escrito:
> >> On Wed, Sep 23, 2015 at 4:07 PM, GaCuest wrote:
> >> > En 23 de septiembre de 2015 en 16:55:18, Luke Kenneth Casson Leighton
> (lkcl at lkcl.net)
> >> escrito:
> >> >> On Wed, Sep 23, 2015 at 2:59 PM, GaCuest wrote:
> >> >>
> >> >> > I’m using AirMail. It has plain text editing, but not line-wrap.
> >> >> > I will do that manually.
> >> >>
> >> >> appreciated.
> >> >>
> >> >> > I updated the block diagram:
> >> >> >
> http://rhombus-tech.net/community_ideas/games_console/news/pcb_block_diagram_updated2_23sep2015/
> >> >> >
> >> >> > Anything more to change?
> >> >>
> >> >> yes, one thing that's important: 1st USB is mandated to be >= speed
> >> >> than 2nd USB. so you need to swap 1st USB with 2nd USB.
> >> >>
> >> >> reason: the STM32F is connected to the port that may end up being
> >> >> 480mbit/sec and the USB Hub is connected to the port that may end up
> >> >> being only 11mbit/sec.
> >> >>
> >> >> certainly, for the jz4775 CPU Card (which i am sending off very
> >> >> shortly), it *DEFINITELY* has USB 2.0 for the 1st port and *ONLY* USB
> >> >> 1.1 for the 2nd.
> >> >>
> >> >> and i am certainly not going to increase the cost of the jz4775 CPU
> >> >> Card by an extra $2 worth of components to put in a USB2 Hub when the
> >> >> SOC itself is only $2.50!!!
> >> >>
> >> >
> >> > I think that you have not properly seen the block diagram.
> >>
> >> wiggle wiggle follow the lines with my finger pointing at the screen
> >> this time... :)
> >>
> >> > The STM32 is connected to the second USB, the USB HUB is connected
> >> > to the first USB.
> >> >
> >> > This right?
> >>
> >> yes! :)
> >>
> >
> > Then, anything to change?
>
>  no
>
> > Is this right?:
>
>  i did say yes
>
> >
> http://rhombus-tech.net/community_ideas/games_console/news/pcb_block_diagram_updated2_23sep2015/
> >
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