[Arm-netbook] Handheld Games Console

[Luke Kenneth Casson Leighton]

On Tue, Sep 22, 2015 at 4:31 PM, GaCuest <gacuest at gmail.com> wrote:
> En 22 de septiembre de 2015 en 15:15:51, Luke Kenneth Casson Leighton (lkcl at lkcl.net) escrito:
>> On Tue, Sep 22, 2015 at 1:12 PM, GaCuest wrote:
>>
>> >> The only solution I can think is to put the BMA250 in the second PCB and connect directly
>> >> to STM32F and configure it as a USB device. I do not know if this is easy to do for us (software
>> >> development) and solve the problem of EINTs.
>>
>> making a GPIO an EINT on the STM32F, then reading I2C, then sending a
>> few bytes of data as a USB event, it's about... 30-40 lines of code.
>> if it's any more than that, you're doing something *drastically*
>> wrong.
>>
>
> So I suppose that the better option is to put the BMA250 on the second PCB and connect it to STM32F, right?

 that's what i would do, because, if i was considering making a
separate controller (as a 2nd joypad) i would want to be able to
"tilt" the controller... rather than just the games console.

> On the other hand, we don’t need a EINT of the EOMA-68 to the STM32F, right?

 correct, you don't.  USB events will take care of generating an
interrupt, automatically.

l.