Re: FreeBSD 14, RPI CM3+ - how to use I2C?
- In reply to: Emmanuel Vadot : "Re: FreeBSD 14, RPI CM3+ - how to use I2C?"
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Date: Wed, 27 Sep 2023 08:32:20 UTC
hi, is there a similar solution for allwinner i2c(twsi)? cheers, danny > On 21 Sep 2023, at 16:50, Emmanuel Vadot <manu@bidouilliste.com> wrote: > > On Thu, 21 Sep 2023 15:09:45 +0200 > "Patrick M. Hausen" <pmh@hausen.com <mailto: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 <mailto:manu@bidouilliste.com>> <manu@freebsd.org <mailto:manu@freebsd.org>>