From nobody Mon Nov 29 07:39:52 2021 X-Original-To: hackers@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 286DC18C02DA for ; Mon, 29 Nov 2021 07:39:55 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) Received: from kabab.cs.huji.ac.il (kabab.cs.huji.ac.il [132.65.116.210]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4J2cgt5tgdz3Gvg for ; Mon, 29 Nov 2021 07:39:54 +0000 (UTC) (envelope-from danny@cs.huji.ac.il) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=cs.huji.ac.il; s=57791128; h=To:References:Message-Id:Content-Transfer-Encoding:Cc:Date:In-Reply-To:From:Subject:Mime-Version:Content-Type; bh=W+wMU/F+Bdpstyk949/7xiW0ZbJKHOR4Ri2KVN4EX0U=; b=dAukpgtcCVamOfV+tUqmlBYiH7Z8QVq64NruW8wgp08f3C6OMysCciZeyRL4IValTokN1y/H0CnMPtLoKHYE91qdXHAYI4BFiW1dw9HeuwiDJS377WCjCXi+uFaSOh+ey2kFQA6I6k9oyILPb4YCWg5snSYWRzDsmXhhOwZD74Kz9M4G71z9iWV06dkru1PprDcsiVMp3DhChyNTXrGFD2g2ZoUNlJ/r6+AdHDyIWlpBeSgCechDigCFiXM2MiBpVBEBwEn2CPQghpSk2ObOGzefiN+1X142z/mm16RT0u1CKwVjpglct1wVVMU5gNKKa9duoSJVKNoXGJI2b7IJ/w==; Received: from bach.cs.huji.ac.il ([132.65.80.20] helo=smtpclient.apple) by kabab.cs.huji.ac.il with esmtp id 1mrbGS-000DAd-Fh; Mon, 29 Nov 2021 09:39:52 +0200 Content-Type: text/plain; charset=utf-8 List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: usb serial - need quirk? From: Daniel Braniss In-Reply-To: Date: Mon, 29 Nov 2021 09:39:52 +0200 Cc: freebsd- Content-Transfer-Encoding: quoted-printable Message-Id: References: <11EBCD70-3259-4E4D-8B9C-9F25364BC73C@cs.huji.ac.il> <20F9C20E-BB89-4FC1-A339-171447368AD2@dons.net.au> To: Daniel O'Connor X-Mailer: Apple Mail (2.3654.120.0.1.13) X-Rspamd-Queue-Id: 4J2cgt5tgdz3Gvg X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N > On 29 Nov 2021, at 09:24, Daniel O'Connor wrote: >=20 >=20 >=20 >> On 29 Nov 2021, at 17:35, Daniel Braniss wrote: >>>> it=E2=80=99s the last line that I think is causing failure to flash = the device (probably needs the break to set the speed?) >>>=20 >>> Why would it need break to set the speed? >> don=E2=80=99t know, but I=E2=80=99ve seen in the past serial stuff = that needed the break to synchronize. >>>=20 >>>> any ways, is there some fix for this? >>>=20 >>> You didn't actually post the problem you are having so it's = impossible to say :) >>> I assume esptool fails but it would be helpful if you posted the = output. >> the flashing keeps failing with: >> Chip is ESP32-C3 (revision 3) >> Features: Wi-Fi >> Crystal is 40MHz >> MAC: 7c:df:a1:a3:61:74 >> Uploading stub... >>=20 >> A fatal error occurred: Failed to write to target RAM (result was = 01070000) >>>=20 >>> I haven't used an ESP32-C3 but all of the other ESP's don't have USB = built in so it depends what USB UART you have on your board - any idea = which one it it? >> all the other esp32 I have work fine, it=E2=80=99s this esp32c3 that = fails. >> anyways, i got hold of a ttl to usb from m5stack, and after some = fiddling got it to flash! >> this chip is CP2104, >> so the problem seems to be in the driver for the unknown chip on this = esp32c3 - no >> indication in the diagrams, nor can I read the micro words on the = chip :-( >=20 > I had a look at the ESP32-C3 datasheet and it *does* have a USB = interface built in and it talks about a CDC-ACM virtual serial port = which matches what you see. >=20 > The only ACM quirk I can see is UQ_ASSUME_CM_OVER_DATA so you could = try that I suppose.. > (See the usb_quirk man page) >=20 i=E2=80=99ll try this ASAP, thanks BTW, looking at the m5 stamp c3 diagram, I can=E2=80=99t see how the = usb-typec is connected to the esp32c3 from the esp32c3 docs, it=E2=80=99s gpio9 that needs to be grounded to = flash, and I don=E2=80=99t see that happening when using the onboard usb. oh well, thanks again, danny > -- > Daniel O'Connor > "The nice thing about standards is that there > are so many of them to choose from." > -- Andrew Tanenbaum >=20