Date: Tue, 6 Oct 2020 16:30:19 +0300 From: Daniel Braniss <danny@cs.huji.ac.il> To: Andriy Gapon <avg@FreeBSD.org> Cc: Emmanuel Vadot <manu@bidouilliste.com>, "freebsd-arm@freebsd.org" <arm@FreeBSD.org> Subject: Re: nanopi/allwinner i2c not working. Message-ID: <F36B7EDD-B9A8-4D9B-854E-B54BFE678AB9@cs.huji.ac.il> In-Reply-To: <ecc5c0cf-3a5f-ef24-8270-3b95354ee7d9@FreeBSD.org> References: <234D06ED-C99F-477E-8D95-492979084E7A@cs.huji.ac.il> <d154f62f-cf41-aaac-4bae-89ee48163afa@FreeBSD.org> <E2E23A4F-9D51-4803-BFF1-B5B2BBE56576@cs.huji.ac.il> <7934CE38-DC3F-450A-A131-19A7F88DA9EC@cs.huji.ac.il> <e1dd71e2-9ee3-380d-7be9-601a3015652c@FreeBSD.org> <20201006104119.28f2262d47107d41025d193f@bidouilliste.com> <29A34854-E792-48CE-AF0A-E4C605BDFC3B@cs.huji.ac.il> <6416CA90-AB4C-4F8A-BCF4-7C9E5A4F2F8D@cs.huji.ac.il> <0ba109b4-784f-19ed-e52d-a40b75af872c@FreeBSD.org> <7C27FB6C-BF0D-4DAE-99D0-50849D2FBA5E@cs.huji.ac.il> <ecc5c0cf-3a5f-ef24-8270-3b95354ee7d9@FreeBSD.org>
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> On 6 Oct 2020, at 16:26, Andriy Gapon <avg@FreeBSD.org> wrote: >=20 > On 06/10/2020 16:23, Daniel Braniss wrote: >>=20 >>=20 >>> On 6 Oct 2020, at 15:53, Andriy Gapon <avg@FreeBSD.org> wrote: >>>=20 >>> On 06/10/2020 15:47, Daniel Braniss wrote: >>>> i2c -s works - finds the devices >>>>=20 >>>> but can=E2=80=99t do much else, can=E2=80=99t talk to the device = (pn532) >>>> trying to write i get >>>> I2CRWR: errno 1: Operation not permitted=E2=80=99 >>>=20 >>> You have to use -m tr with twsi. >>=20 >> please translate :-) >=20 > Okay, please show the command line :) ah, got it, but i use ioctl(fd, I2CRDWR, data). i=E2=80=99ll recompile and see if it=E2=80=99s still not working. >=20 >=20 > --=20 > Andriy Gapon
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