Date: Thu, 17 Feb 2022 11:34:27 +0200 From: Daniel Braniss <danny@cs.huji.ac.il> To: Daniel O'Connor <darius@dons.net.au> Cc: freebsd- <hackers@freebsd.org>, "usb@freebsd.org" <usb@FreeBSD.org> Subject: Re: usb CH9102 serial chip Message-ID: <17E09096-A45B-43F5-BFE4-7645E8A2275D@cs.huji.ac.il> In-Reply-To: <013FB4BA-7D32-4FFB-AFD3-E594CF638A66@dons.net.au> References: <C8258774-B183-48DD-905F-260F5999152C@cs.huji.ac.il> <7DD6E1FA-3EA4-44D9-A272-9E51FB9F2BFC@dons.net.au> <C07DE6BE-65AB-43FA-8C52-2A7D0197767E@cs.huji.ac.il> <013FB4BA-7D32-4FFB-AFD3-E594CF638A66@dons.net.au>
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--Apple-Mail=_7CB45CB7-F310-4F07-8AC9-447C364B58C9 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii > On 17 Feb 2022, at 11:30, Daniel O'Connor <darius@dons.net.au> wrote: >=20 >=20 >=20 >> On 17 Feb 2022, at 19:50, Daniel Braniss <danny@cs.huji.ac.il> wrote: >>=20 >>> If that is the case then the chip/driver are working fine since that = requires bidirectional communication etc.. >>>=20 >>=20 >> but that works only if I power up the board while pressing a button, = then it also appears as /dev/ttyU0, and >> so then I can flash, after reset, the device is gone and there are = errors ( BTW, the flashed image workes): >>=20 >> Feb 17 09:46:59 pampero kernel: usbd_setup_device_desc: getting = device descriptor at addr 4 failed, USB_ERR_IOERROR >> Feb 17 09:47:00 pampero kernel: usbd_req_re_enumerate: addr=3D4, set = address failed! (USB_ERR_IOERROR, ignored) >=20 > What sort of dev board is it? m5 stamp C3U = https://shop.m5stack.com/products/m5stamp-c3u-mate-with-pin-headers?_pos=3D= 2&_sid=3D3df9b5f0d&_ss=3Dr&variant=3D42341016633601 = <https://shop.m5stack.com/products/m5stamp-c3u-mate-with-pin-headers?_pos=3D= 2&_sid=3D3df9b5f0d&_ss=3Dr&variant=3D42341016633601> >=20 > Seems very strange the USB UART would behave differently unless it's = wired up in an unusual way IMO. >=20 > -- > Daniel O'Connor > "The nice thing about standards is that there > are so many of them to choose from." > -- Andrew Tanenbaum >=20 >=20 --Apple-Mail=_7CB45CB7-F310-4F07-8AC9-447C364B58C9 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><br = class=3D""><div><br class=3D""><blockquote type=3D"cite" class=3D""><div = class=3D"">On 17 Feb 2022, at 11:30, Daniel O'Connor <<a = href=3D"mailto:darius@dons.net.au" class=3D"">darius@dons.net.au</a>> = wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><div = class=3D""><br class=3D""><br class=3D""><blockquote type=3D"cite" = class=3D"">On 17 Feb 2022, at 19:50, Daniel Braniss <<a = href=3D"mailto:danny@cs.huji.ac.il" class=3D"">danny@cs.huji.ac.il</a>>= wrote:<br class=3D""><br class=3D""><blockquote type=3D"cite" = class=3D"">If that is the case then the chip/driver are working fine = since that requires bidirectional communication etc..<br class=3D""><br = class=3D""></blockquote><br class=3D"">but that works only if I power up = the board while pressing a button, then it also appears as /dev/ttyU0, = and<br class=3D"">so then I can flash, after reset, the device is gone = and there are errors ( BTW, the flashed image workes):<br class=3D""><br = class=3D"">Feb 17 09:46:59 pampero kernel: usbd_setup_device_desc: = getting device descriptor at addr 4 failed, USB_ERR_IOERROR<br = class=3D"">Feb 17 09:47:00 pampero kernel: usbd_req_re_enumerate: = addr=3D4, set address failed! (USB_ERR_IOERROR, ignored)<br = class=3D""></blockquote><br class=3D"">What sort of dev board is it?<br = class=3D""></div></div></blockquote><span class=3D"Apple-tab-span" = style=3D"white-space:pre"> </span>m5 stamp C3U</div><div><a = href=3D"https://shop.m5stack.com/products/m5stamp-c3u-mate-with-pin-header= s?_pos=3D2&_sid=3D3df9b5f0d&_ss=3Dr&variant=3D42341016633601" = class=3D"">https://shop.m5stack.com/products/m5stamp-c3u-mate-with-pin-hea= ders?_pos=3D2&_sid=3D3df9b5f0d&_ss=3Dr&variant=3D4234101663360= 1</a></div><div><br class=3D""><blockquote type=3D"cite" class=3D""><div = class=3D""><div class=3D""><br class=3D"">Seems very strange the USB = UART would behave differently unless it's wired up in an unusual way = IMO.<br class=3D""><br class=3D"">--<br class=3D"">Daniel O'Connor<br = class=3D"">"The nice thing about standards is that there<br class=3D"">are= so many of them to choose from."<br class=3D""> -- Andrew Tanenbaum<br = class=3D""><br class=3D""><br = class=3D""></div></div></blockquote></div><br class=3D""></body></html>= --Apple-Mail=_7CB45CB7-F310-4F07-8AC9-447C364B58C9--
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