BTMON - Online Linux Manual PageSection : 1
Updated : April 2021
Source : BlueZ
Note : Linux System Administration

NAMEbtmon − Bluetooth monitor

SYNOPSYSbtmon [OPTIONS ...]

DESCRIPTIONThe btmon(1) command provides access to the Bluetooth subsystem monitor infrastructure for reading HCI traces.

OPTIONS −r FILE, −−read FILE  Read traces in btsnoop format from FILE​. −w FILE, −−write FILE  Save traces in btsnoop format to FILE​. −a FILE, −−analyze FILE  Analyze traces in btsnoop format from FILE​. It displays the devices found in the FILE with its packets by type. −s SOCKET, −−server SOCKET  Start monitor server socket. −p PRIORITY, −−priority PRIORITY  Show only priority or lower for user log. PRIORITY NAME 3 Error 4 Warning 6 Information (Default) 7 Debug. debug can be used. −i NUM, −−index NUM  Show only specified controller. hciNUM is also acceptable. This is useful to capture the traces from the specific controller when the multiple controllers are presented. −d TTY, −−tty TTY  Read data from TTY​. −B SPEED, −−rate SPEED  Set TTY speed. The default SPEED is 115300 −V COMPID, −−vendor COMPID  Set the default company identifier. The COMPID is a unique number assigned by the Bluetooth SIG to a member company and can be found/searched from the Bluetooth SIG webpage. For example, Intel is 2 and Realtek is 93. −M, −−mgmt  Open channel for mgmt events. −t, −−time  Show a time instead of time offset. −T, −−date  Show a time and date information instead of time offset. −S, −−sco  Dump SCO traffic in raw hex format. −A, −−a2dp  Dump A2DP stream traffic in a raw hex format. −E IP, −−ellisys IP  Send Ellisys HCI Injection. −P, −−no−pager  Disable pager usage while reading the log file. −J OPTIONS, −−jlink OPTIONS  Read data from RTT. Each options are comma(,) seprated without spaces. OPTIONS Description DEVICE Required. Set the target device. SERIALNO (Optional) Set the USB serial number. Default is 0​. INTERFACE (Optional) Target interface. Default is swd​. SPEED (Optional) Set target interface speed in kHz. Default is 1000​. −R OPTIONS, −−rtt OPTIONS  RTT control block parameters. Each options are comma(,) seprated without spaces. OPTIONS Description ADDRESS (Optional) Address of RTT buffer. Default is 0x00 AREA (Optional) Size of range to search in RTT buffer. Default is 0 NAME (Optional) Buffer name. Default is btmonitor −C WIDTH, −−columns WIDTH  Output width if not a terminal −c MODE, −−color MODE  Set output color. The possible MODE values are: auto|always|never​. Default value is auto −v, −−version  Show version −h, −−help  Show help options

EXAMPLES

Capture the traces from hci0 to hcidump.log file $ btmon −i hci0 −w hcidump.log

Open the trace file $ btmon −r hcidump.log

RESOURCES­http://www.bluez.org

REPORTING BUGS­linux−bluetooth@vger.kernel.org

AUTHORMarcel Holtmann <marcel@holtmann.org>, Tedd Ho-Jeong An <tedd.an@intel.com>

COPYRIGHTFree use of this software is granted under ther terms of the GNU Lesser General Public Licenses (LGPL).
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