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client-ip=206.124.132.107 Received: from mimir.eigenstate.org (mimir.eigenstate.org [206.124.132.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Thu, 27 Jan 2022 23:54:17 -0500 (EST) (envelope-from ori@eigenstate.org) Received: from abbatoir.myfiosgateway.com (pool-74-108-56-225.nycmny.fios.verizon.net [74.108.56.225]) by mimir.eigenstate.org (OpenSMTPD) with ESMTPSA id 6fc5ba88 (TLSv1.2:ECDHE-RSA-AES256-SHA:256:NO) for <9fans@9fans.net>; Thu, 27 Jan 2022 20:54:16 -0800 (PST) Message-ID: <7B50ACAE0F336EBCF27A22F18F4273D4@eigenstate.org> To: 9fans@9fans.net Subject: Re: [9fans] building blocks speaking 9p Date: Thu, 27 Jan 2022 23:54:14 -0500 From: ori@eigenstate.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 5c84de18-7ff6-11ec-b459-cd32378bff80 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYTRlNTg0YTM3M2IwNTU1My1NM2JiMzNmZGNiMmMyZTBjNWJiOGNh?= =?UTF-8?B?NzE3Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M3bb33fdcb2c2e0c5bb8ca717:1:Wdv8CGIlBr075NKQEGguQD1h7Lcjc82ft627IFmdgII Quoth Bakul Shah : > The idea: > - make it very easy to create hardware gadgets by > providing a firmware/hardware building block that > talks 9p on the host interface side & interfaces > with device specific hardware. >=20 > - use a "universal" 9p driver on the host side that > allows access to any such 9p device even from a shell. >=20 > - provide a standard way to find out device capabilities. >=20 > - together they provide a plug-and-play setup. >=20 > Example: connect an LED and a current sensor to this > 9p device, other necessary hardware, add a few config > bits and plug this device kn]]into a host. Now you should > be able to turn on/off the light or sense its state. >=20 > Similarly you should be able to control a stepper motor > servo, cameras, microphones, other actuators, sensors, > IO etc. Eventually you should be able to snap together > enough of these components to build larger assemblies > such as a 3D printer. >=20 I did something like this at a previous job, where we had firmware exposed via 9p tunneled over a USB bulk endpoint. The firmware was implemented on an STM32, and mounted from linux using lib9pclient with a p9p-ectomy. It worked quite well. Unfortunately, it wasn't open source, and the company is now dead. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Ta4e584a373b05553-M3bb33= fdcb2c2e0c5bb8ca717 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription