cansniffer: support EFF frames with 29 bit CAN IDs
Convert cansniffer from CAN_BCM to CAN_RAW sockets and handle the
content filter in user space. Conversion CAN_RAW including slot
concept and sorting contributed by @coryjfowler.
Functional changes visible to users:
- New format for settings file (using 'r' and 'w' interactive commands)
- New command '8' to switch in a compact binary view for 80 columns view
- New head line layout
- The gap time between CAN frames is displayed in milli seconds (ms)
- The interactive filters support 29 bit CAN IDs
- New interactive command to clear/redraw the screen (<SPACE><ENTER>)
- New interactive commands to enable/disable SFF/EFF frames
a<ENTER> - enable 'a'll SFF CAN-IDs to sniff
n<ENTER> - enable 'n'one SFF CAN-IDs to sniff
A<ENTER> - enable 'A'll EFF CAN-IDs to sniff
N<ENTER> - enable 'N'one EFF CAN-IDs to sniff
- Fixes in bit change colorization and gap calculation detected at rework
added -c option for bursty output.
specify -c 100 to have 100 packets sent in burst before a gap.
use for example -p 1000 to avoid TX buffer full errors
Some unification of code formatting and rename of a variable in
print_snifline() which does not represent a CAN ID anymore.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
With the new commands
a<ENTER> - enable 'a'll SFF CAN-IDs to sniff
n<ENTER> - enable 'n'one SFF CAN-IDs to sniff
A<ENTER> - enable 'A'll EFF CAN-IDs to sniff
N<ENTER> - enable 'N'one EFF CAN-IDs to sniff
the EFF/SFF frames can be added/removed with a single command.
Of course this could be done with the '+' and '-' filters too.
But 'N' is much easier to type then '-0000000000000000' ...
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
For efficiency reasons on slow embedded machines cansniffer usually
does not clear the screen but only writes updates on required lines.
Sometimes the written lines exceed the terminal lines and people
resize the window which is not detected by cansniffer.
With entering <SPACE><ENTER> in interactive mode the screen can be
forced to redraw after resizing the terminal window.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Convert cansniffer from CAN_BCM to CAN_RAW sockets and handle the
content filter in user space. Conversion CAN_RAW including slot
concept and sorting contributed by coryjfowler.
Functional changes visible to users:
- New format for settings file
- New command '8' to switch in a compact binary view for 80 columns view
- New head line layout
- The gap time between CAN frames is displayed in milli seconds (ms)
- The interactive filters support 29 bit CAN IDs
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Clean up readsettings() and terminate when the settings file
'sniffset.*' is not found when given on commandline.
The readsettings() status output could not be read anyway due to
instant redraw from CAN frames.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Remove functionalities that are not supported resp. can not be implemented
after the CAN_BCM to CAN_RAW conversion of cansnifffer.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
The basename() function needs libgen.h to be included as otherwise this
will fail to compile in some environments.
Reported-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
When notching marked (and colored) bits with the interactive '#' command
the binary output omits colored bits - as intended.
But when switching back to the hex and ASCII output the bytes with
notched bits remained uncolored even when some bits inside the hex bytes
would have needed to be colored.
The check for the colored output was a logical AND operation which is
fine for the binary representation but needed to be a bit-wise operation
in the hex/ASCII byte mode case.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Oliver Hartkopp
Rasmus Pedersen
Alexander GQ Gerasiov
Alexander Gerasiov