nanopi/allwinner i2c not working.

[Andriy Gapon]

On 06/10/2020 16:30, Daniel Braniss wrote:
> 
> 
>> On 6 Oct 2020, at 16:26, Andriy Gapon <avg at FreeBSD.org> wrote:
>>
>> On 06/10/2020 16:23, Daniel Braniss wrote:
>>>
>>>
>>>> On 6 Oct 2020, at 15:53, Andriy Gapon <avg at FreeBSD.org> wrote:
>>>>
>>>> On 06/10/2020 15:47, Daniel Braniss wrote:
>>>>> i2c -s works - finds the devices
>>>>>
>>>>> but can’t do much else, can’t talk to the device (pn532)
>>>>> trying to write i get
>>>>> 	I2CRWR: errno 1: Operation not permitted’
>>>>
>>>> You have to use -m tr with twsi.
>>>
>>> please translate :-)
>>
>> Okay, please show the command line :)
> 
> ah, got it, but i use ioctl(fd, I2CRDWR,  data).
> 
> i’ll recompile and see if it’s still not working.

I2CRDWR should work actually, it uses iicbus_transfer.
Can you share / show your code?


-- 
Andriy Gapon