Date: Fri, 24 Nov 2017 07:09:20 -0800 (PST) From: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net> To: Hans Petter Selasky <hps@selasky.org> Cc: Oliver Pinter <oliver.pinter@hardenedbsd.org>, "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>, Farhan Khan <khanzf@gmail.com> Subject: Re: Is ddb(4) over a USB-to-Serial port possible? Message-ID: <201711241509.vAOF9K43095978@pdx.rh.CN85.dnsmgr.net> In-Reply-To: <953998da-5e3a-1f3c-b56b-41ddda020b68@selasky.org>
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> On 11/23/17 23:34, Oliver Pinter wrote: > > Could we somehow change these after attached device? Ergo could we setup > > two USB context, one for normal operation and one for the debugger? > > What you can do is to set the values, then re-enumerate the USB device > like this: > > usbconfig -d X.Y reset It would be absolutely wonderful if someone would add a page to the handbook near the current page on ddb on how to do ddb over serial, both uart and usb based. There is also some very minor discussion of ddb over serial in the HINTS section of ddb(4) that could include these nice little tid bits about how to get it working over a usb device. Since uarts have all but disappeared for modern PC designs this is becoming more important. Thanks, -- Rod Grimes rgrimes@freebsd.org
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