From nobody Thu Dec 28 19:24:08 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 4T1JNS3Vg0z54Qv6 for ; Thu, 28 Dec 2023 19:24:24 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [50.1.20.27]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "www.zefox.com", Issuer "www.zefox.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4T1JNR5lJlz4Q0q for ; Thu, 28 Dec 2023 19:24:23 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Authentication-Results: mx1.freebsd.org; none Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.17.1/8.15.2) with ESMTPS id 3BSJO9Y9041458 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Thu, 28 Dec 2023 11:24:10 -0800 (PST) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.17.1/8.15.2/Submit) id 3BSJO8q3041457; Thu, 28 Dec 2023 11:24:08 -0800 (PST) (envelope-from fbsd) Date: Thu, 28 Dec 2023 11:24:08 -0800 From: bob prohaska To: Mark Millard Cc: John F Carr , "ticso@cicely.de" , Marcin Cieslak , "freebsd-arm@freebsd.org" Subject: Re: USB-serial adapter suggestions needed Message-ID: References: <55q37289-ss30-nq9o-7r31-086n999p394s@fncre.vasb> <23100FB9-BB4A-48FF-A715-84EF7F6F59A6@mit.edu> <6DD2FDE4-77DB-499A-AED8-F179A9DAA0EF@yahoo.com> <6A38A60B-3281-468D-907C-26AB2F8D07A6@yahoo.com> 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 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6A38A60B-3281-468D-907C-26AB2F8D07A6@yahoo.com> X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:7065, ipnet:50.1.16.0/20, country:US] X-Spamd-Bar: ---- X-Rspamd-Queue-Id: 4T1JNR5lJlz4Q0q On Wed, Dec 27, 2023 at 12:27:33PM -0800, Mark Millard wrote: > > Overall I've not been able to understand what the > (various?) hypothesized stage-by-stage byte flow > paths are in these notes. > Maybe this will help. The path is workstation> Ethernet > terminal server:usb-serial > serial wires> GPIO 8/10 I hesitated to use the words "terminal server" because that has implications (distinct IP address, multiple serial interfaces) that don't exist here. The workstation is a RasPiOS Pi4, the Pi3 host called pelorus is the terminal server and the GPIO pins are on the Pi3 host named www.zefox.net . The Ethernet connection works well enough for all the other hosts that I think we can disregard whether it's wired or WiFi and LAN or WAN or all four. Thanks for all your help! bob prohaska