Re: i2c and indirect vs. direct config

[Brad Spencer <brad%anduin.eldar.org@localhost>]

Jason Thorpe <thorpej%me.com@localhost> writes:

>> On May 31, 2018, at 9:34 PM, Jason Thorpe <thorpej%me.com@localhost> wrote:
>> 
>> I spent some time reviewing NXP’s i2c spec this evening (well, during timeouts, etc. — GO DUBS), and I’m becoming convinced that there is a subtle error in our i2c_bitbang code…
>
> *smacks forehead* … RPI, of course, has a “smart” i2c controller.  There may be a bug in that driver.  What I should do is try gpioiic to see if the “quick read” method works there.
>
> Same caveat as below applies, however.
>
>> (Not sure I'll get to it this weekend, though… despite my kid’s spring soccer season being finished, I seem to have a full calendar nonetheless…)
>
> -- thorpej

gpioiic may have bugs too..  I could not get it to work with the am2315.
Reads would not error, but no data was returned.  However, the am2315 is
a strange thing.  However, the si70xxtemp(4) driver did work with
gpioiic.




-- 
Brad Spencer - brad%anduin.eldar.org@localhost - KC8VKS - http://anduin.eldar.org