NAME

hcidump — Parse HCI data

SYNOPSIS

DESCRIPTION

hcidump reads raw HCI data coming from and going to a Bluetooth device (which can be specified with the option -i, default is all available devices) 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.

OPTIONS

-a

For every packet, not only is the packet type displayed, but also all data in ASCII format.

-h

Prints usage info and exits.

-i HCI_node

Data is read from the specified device. If not specified, and if -r option is not set, data is read from the all available Bluetooth devices.

-p PSM

Sets default Protocol Service Multiplexer (PSM) to specified value.

-R

Raw mode: do not display packet type, only data.

-r file

Data is not read from a Bluetooth device, but from the specified file. The file can be created with option -w.

-s length

Sets max length of processed packets.

-t

Prepend a time stamp to every packet.

-w file

Parsed output is not printed to screen, instead data read from the device are saved into the specified file. The saved dump file can be subsequently parsed with option -r.

-x

For every packet, not only is the packet type displayed, but also all data in hex format.

FILTERS

Filter is a space-separated list of packet categories: available categories are bnep, cmtp, hci, hidp, l2cap, rfcomm, sco and sdp. If filters are used, only packets belonging to the specified categories are dumped. By default, all packets are dumped.

AUTHORS

Maxim Krasnyansky ⟨maxk@qualcomm.com⟩
Fabrizio Gennari ⟨fabrizio.gennari@philips.com⟩