Date: Thu, 21 Sep 2023 15:50:34 +0200 From: Emmanuel Vadot <manu@bidouilliste.com> To: "Patrick M. Hausen" <pmh@hausen.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: FreeBSD 14, RPI CM3+ - how to use I2C? Message-ID: <20230921155034.863ebfa8ead5bc85046fa988@bidouilliste.com> In-Reply-To: <6E552CD8-4248-4EBE-A919-2A56CA1A87FA@hausen.com> References: <8B10870E-C485-4626-BBCF-BEE0771D8B5A@hausen.com> <6E552CD8-4248-4EBE-A919-2A56CA1A87FA@hausen.com>
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On Thu, 21 Sep 2023 15:09:45 +0200 "Patrick M. Hausen" <pmh@hausen.com> wrote: > Hi, > > > Am 21.09.2023 um 14:10 schrieb Patrick M. Hausen <pmh@hausen.com>: > > dtoverlay=i2c1,pins_44_45 > > dtoverlay=i2c-rtc,mcp7940x > > > > Source: https://docs.turingpi.com/docs/turing-pi1-cluster-management-bus-i2c > > > > Did that, but > > > > i2c -s > > > > shows now output [...] > > Turns out the FreeBSD installation does not come with all (?) overlays > by default like e.g. Ubuntu. > > I downloaded the two missing files from here: > > https://github.com/raspberrypi/firmware > > and placed them in /boot/efi/overlays. We don't install them all on the image but everything is packaged in the rpi-firmware package. > Bingo: > > root@pi1:~ # i2c -s > 57 5c > root@pi1:~ # i2c -a 0x57 -o 0xf2 -d r -c 1 > ff > > Now I finally understand what all of this weird stuff *is* - sort of ;-) > > Kind regards, > Patrick -- Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>
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