From: "Brian L. Stuart" <blstuart@bellsouth.net>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] Pi Hats and i2c
Date: Thu, 10 Mar 2016 03:53:31 +0000 [thread overview]
Message-ID: <801552123.5703952.1457582011484.JavaMail.yahoo@mail.yahoo.com> (raw)
In-Reply-To: <801552123.5703952.1457582011484.JavaMail.yahoo.ref@mail.yahoo.com>
On Wed, 3/9/16, Anthony Sorace <a@9srv.net> wrote:
> Anyone have any example code using the i2c interface on the pi
> I can look at? I'm playing around with several of these, and am not
> getting the results I expect (data getting out, but the hats aren't behaving
> like they're getting the same bits I think I'm sending).
>
> More generally, anyone got any of these hats going? I'm
> starting off with the Sense Hat, since it exposes everything
> on it via the i2c.
I haven't done anything with the hats, but I do have a few bits
of I2C code that go along with the driver modifications I posted
a little while back.
The first does a little lightshow on a square LED array from Adafruit:
http://cs.drexel.edu/~bls96/plan9/lightshow.c
The second talks to the MMA8451 3-axis accelerometer:
http://cs.drexel.edu/~bls96/plan9/mma8451sa.c
This latter one illustrates the subaddressing features.
BLS
next parent reply other threads:[~2016-03-10 3:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <801552123.5703952.1457582011484.JavaMail.yahoo.ref@mail.yahoo.com>
2016-03-10 3:53 ` Brian L. Stuart [this message]
2016-03-10 4:15 ` Vasudev Kamath
[not found] <1571845562.5740270.1457585385261.JavaMail.yahoo.ref@mail.yahoo.com>
2016-03-10 4:49 ` Brian L. Stuart
2016-03-10 5:04 ` Vasudev Kamath
2016-03-09 20:39 Anthony Sorace
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