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From: "Aleš Nesrsta" <starous@volny.cz>
To: The development of GNU GRUB <grub-devel@gnu.org>
Subject: Question: USB serial - device driver debugging
Date: Wed, 15 Sep 2010 07:58:22 +0200	[thread overview]
Message-ID: <1284530302.6578.25.camel@pracovna> (raw)
In-Reply-To: <1284401606.5929.3.camel@pracovna>

Hi,

it seems there are some problems in USB serial driver PL2303 and I want
to debug it.

I need to send and receive some data to see what happened, i.e. I need
to enable remote debug via classic serial interface by e.g.
"serial;terminal_output console serial;debug=xxx" and then do something
like "cat some_file > serial_usb0" and "cat serial_usb0 > some file" to
send and receive some data. But redirection is not supported in GRUB...

I cannot use additional terminal redirection like "terminal_output
console serial serial_usb0" to send something into serial_usb0 - it
makes recursive hang/crash when debug output is enabled.

Is there some way how to send/receive data to/from such device from GRUB
command line?
Or do I need to prepare my own testing program as command module?

Regards
Ales




  parent reply	other threads:[~2010-09-15  5:58 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-25 13:26 Plans on 1.99 release Vladimir 'φ-coder/phcoder' Serbinenko
2010-08-26 23:05 ` Carles Pina i Estany
2010-08-26 23:15   ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-08-28 11:31     ` Aleš Nesrsta
2010-08-29 23:52       ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-08-30  0:14         ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-03 22:02           ` Plans on 1.99 release - USB issues Aleš Nesrsta
2010-09-04 17:34             ` Aleš Nesrsta
2010-09-12 17:28               ` [PATCH] USB issues - kbdlayouts branch Aleš Nesrsta
2010-09-13 10:43                 ` [PATCH] usb_keyboard.c problems (USB issues - kbdlayouts branch) Aleš Nesrsta
2010-09-13 11:47                 ` [PATCH] USB issues - kbdlayouts branch Aleš Nesrsta
2010-09-13 18:13                   ` Aleš Nesrsta
2010-09-15  5:58                     ` [PATCH] USB serial - missing configuration Aleš Nesrsta
2010-09-19 11:46                       ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-21 20:18                         ` Aleš Nesrsta
2010-09-23 21:13                           ` Trunk: boot problem - unaligned pointer 0x Aleš Nesrsta
2010-09-26  9:58                             ` Aleš Nesrsta
2010-09-30 19:37                             ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-30 20:45                               ` Aleš Nesrsta
2010-09-15  5:58                     ` Aleš Nesrsta [this message]
2010-09-30 17:53                       ` [RFC - Vladimir ?] USB/RS232 converter PL2303 small problem Aleš Nesrsta
2010-10-17 11:54                         ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-09-18 10:08             ` Plans on 1.99 release - USB issues Vladimir 'φ-coder/phcoder' Serbinenko

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