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* Re: [9fans] Pi Hats and i2c
[not found] <801552123.5703952.1457582011484.JavaMail.yahoo.ref@mail.yahoo.com>
@ 2016-03-10 3:53 ` Brian L. Stuart
2016-03-10 4:15 ` Vasudev Kamath
0 siblings, 1 reply; 5+ messages in thread
From: Brian L. Stuart @ 2016-03-10 3:53 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
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
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] Pi Hats and i2c
2016-03-10 3:53 ` Brian L. Stuart
@ 2016-03-10 4:15 ` Vasudev Kamath
0 siblings, 0 replies; 5+ messages in thread
From: Vasudev Kamath @ 2016-03-10 4:15 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
"Brian L. Stuart" <blstuart@bellsouth.net> writes:
> 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 link gives Forbidden message (403)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [9fans] Pi Hats and i2c
@ 2016-03-09 20:39 Anthony Sorace
0 siblings, 0 replies; 5+ messages in thread
From: Anthony Sorace @ 2016-03-09 20:39 UTC (permalink / raw)
To: 9fans
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.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2016-03-10 5:04 UTC | newest]
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2016-03-10 4:49 ` [9fans] Pi Hats and i2c Brian L. Stuart
2016-03-10 5:04 ` Vasudev Kamath
[not found] <801552123.5703952.1457582011484.JavaMail.yahoo.ref@mail.yahoo.com>
2016-03-10 3:53 ` Brian L. Stuart
2016-03-10 4:15 ` Vasudev Kamath
2016-03-09 20:39 Anthony Sorace
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