From nobody Thu Sep 21 12:10:57 2023 X-Original-To: freebsd-arm@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4RrvPr0Mcgz4v3FN for ; Thu, 21 Sep 2023 12:11:12 +0000 (UTC) (envelope-from pmh@hausen.com) Received: from mail2.pluspunkthosting.de (mail2.pluspunkthosting.de [217.29.33.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4RrvPp64kWz3Kxh for ; Thu, 21 Sep 2023 12:11:10 +0000 (UTC) (envelope-from pmh@hausen.com) Authentication-Results: mx1.freebsd.org; dkim=none; spf=pass (mx1.freebsd.org: domain of pmh@hausen.com designates 217.29.33.228 as permitted sender) smtp.mailfrom=pmh@hausen.com; dmarc=none Received: from smtpclient.apple (87.138.185.145) by mail2.pluspunkthosting.de (Axigen) with (ECDHE-RSA-AES256-GCM-SHA384 encrypted) ESMTPSA id 1E7C74; Thu, 21 Sep 2023 14:11:07 +0200 From: "Patrick M. Hausen" Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.700.6\)) Subject: FreeBSD 14, RPI CM3+ - how to use I2C? Message-Id: <8B10870E-C485-4626-BBCF-BEE0771D8B5A@hausen.com> Date: Thu, 21 Sep 2023 14:10:57 +0200 To: freebsd-arm X-Mailer: Apple Mail (2.3731.700.6) X-Spamd-Bar: - X-Spamd-Result: default: False [-1.65 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; SUBJECT_ENDS_QUESTION(1.00)[]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_LONG(-0.85)[-0.854]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+a:mail2.pluspunkthosting.de]; MIME_GOOD(-0.10)[text/plain]; R_DKIM_NA(0.00)[]; ASN(0.00)[asn:16188, ipnet:217.29.32.0/20, country:DE]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; MLMMJ_DEST(0.00)[freebsd-arm@freebsd.org]; TO_DN_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_HAS_DN(0.00)[]; DMARC_NA(0.00)[hausen.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_ALL(0.00)[] X-Rspamd-Queue-Id: 4RrvPp64kWz3Kxh Next topic with my TuringPi ... The CM placed in slot 1 has got access to the management bus of the TuringPi mainboard. The documentation states that one should add these to config.txt: dtoverlay=3Di2c1,pins_44_45 dtoverlay=3Di2c-rtc,mcp7940x Source: = https://docs.turingpi.com/docs/turing-pi1-cluster-management-bus-i2c Did that, but i2c -s shows now output and root@pi1:~ # i2c -a 0x57 -o 0xf2 -d r -c 1 i2c: ioctl(I2CRDWR) failed: Input/output error root@pi1:~ # grep iic /var/run/dmesg.boot=20 iichb0: mem 0x7e804000-0x7e804fff irq 20 = on simplebus0 iicbus0: on iichb0 iic0: on iicbus0 Any hints on how to get this working? Kind regards, Patrick=