From: root <alex-eB7nCxF232ATle0oOhCeeA@public.gmane.org>
To: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: SPI device sniffing/mirror feature
Date: Sat, 16 Jul 2016 15:27:39 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.10.1607161525430.10952@Test5> (raw)
Hi everyone,
I'm dealing with an embedded Linux, where an application opens the
/dev/spidev1.0 device and constantly talks through with another MCU.
Now if I I try to look at what exchanges (that's what I'd need), doing
a hexdump /dev/spidev1.0 shows something in the beginning but causes
the application to crash. The app is very sensitive and I think it crashes
because the app uses and it can't be used for viewing simultaneously.
Would there be a way to create an alias, or something like a mirror of
this device if I write some extra code/driver? Or is there no chance for
me to sniff the traffic like that (in software) ?
Many thanks in advance!
Alex
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reply other threads:[~2016-07-16 13:27 UTC|newest]
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