hcidump [option [option...]] [filter]
hcidump reads raw HCI data coming from and going to a Bluetooth device (which can be specified with the option -i, default is the first available one) and prints to screen commands, events and data in a human-readable form. Optionally, the dump can be written to a file rather than parsed, and the dump file can be parsed in a subsequent moment.
Prints usage info and exits
- -i <hciX>
Data is read from hciX, which must be the name of an installed Bluetooth device. If not specified, and if -r option is not set, data is read from the first available Bluetooth device.
- -l <len>, --snap-len=<len>
Sets max length of processed packets to len.
- -p <psm>, --psm=<psm>
Sets default Protocol Service Multiplexer to psm.
- -m <compid>, --manufacturer=<compid>
Sets default company id for manufacturer to compid.
- -w <file>, --save-dump=<file>
Parse output is not printed to screen, instead data read from device is saved in file file. The saved dump file can be subsequently parsed with option -r.
- -r <file>, --read-dump=<file>
Data is not read from a Bluetooth device, but from file file. file is created with option -w.
- -s <host>, --send-dump=<host>
Parse output is not printed to screen, instead data read from device is sent to host host.
- -n <host>, --recv-dump=<host>
Data is not read from a Bluetooth device, but from host host.
- -d <host>, --wait-dump=<host>
Data is read from a Bluetooth device, but then send to host for processing. No data is read if no host is connected.
- -t, --timestamp
Prepend a time stamp to every packet.
- -a, --ascii
For every packet, not only is the packet type displayed, but also all data in ASCII.
- -x, --hex
For every packet, not only is the packet type displayed, but also all data in hex.
- -X, --ext
For every packet, not only is the packet type displayed, but also all data in hex and ASCII.
- -R, --raw
For every packet, only the raw data is displayed.
- -C, --cmtp=<psm>
Sets the PSM value for the CAPI Message Transport Protocol.
- -H, --hcrp=<psm>
Sets the PSM value for the Hardcopy Control Channel.
- -O, --obex=<channel>
Sets the RFCOMM channel value for the Object Exchange Protocol.
- -P, --ppp=<channel>
Sets the RFCOMM channel value for the Point-to-Point Protocol.
- -D, --pppdump=<file>
Extract PPP traffic with pppdump format.
- -A, --audio=<file>
Extract SCO audio data.
- -Y, --novendor
Don't display any vendor commands or events and don't show any pin code or link key in plain text.
- -4, --ipv4
Use IPv4 when sending information over the network
- -6, --ipv6
Use IPv6 when sending information over the network
filter is a space-separated list of packet categories: available categories are lmp, hci, sco, l2cap, rfcomm, sdp, bnep, cmtp, hidp, hcrp, avdtp, avctp, obex, capi and ppp. If filters are used, only packets belonging to the specified categories are dumped. By default, all packets are dumped.
Written by Maxim Krasnyansky <firstname.lastname@example.org> and Marcel Holtmann <email@example.com>
man page by Fabrizio Gennari <firstname.lastname@example.org>