Re: GPIO I2C SPI

[fabiodive <fabiodive%gmail.com@localhost>]

Thank you,

I will share here my experiences in the next weeks.

f.

On Aug 29, 2013, at 3:09 PM, Radoslaw Kujawa 
<radoslaw.kujawa%c0ff33.net@localhost> wrote:

> 
> On 29 Aug 2013, at 3:52 PM, fabiodive <fabiodive%gmail.com@localhost> wrote:
> 
>> Hello all,
>> 
>> at http://wiki.netbsd.org/ports/evbarm/raspberry_pi/
>> there is a nice table with the current features of NetBSD on RPI,
>> 
>> I would like to know if NetBSD supports to writing/receiving to:
>> 
>> GPIO pins
> 
> No, but adding support should be trivial.
> 
>> SPI bus
> 
> Yes, although I never tested it.
> 
>> I2C bus
> 
> Yes, although I never tested it.
> 
>> if somebody has experience..which directives should I use to enable
>> the above features into the kernel
> 
> They are enabled in default RPI kernel image in HEAD branch at least since 
> February. So you don't need to do anything special if you are using recent 
> daily build. 
> 
>> and provide the user-space of the 
>> interfaces? 
> 
> For I2C consult the iic(4) man page, also see the i2cscan(8) utility and its 
> source.
> 
> For GPIO see gpio(4) man page.
> 
> For SPI as far as I know there are no generic user-space components provided, 
> besides support for SPI flashes. 
> 
> -- 
> Best regards,
> Radoslaw Kujawa
> 
> 
>