CEC-CTL - Online Linux Manual PageSection : 1
Updated : August 2016
Source : v4l-utils 1.20.0
Note : User Commands
NAMEcec-ctl - An application to control cec devices
SYNOPSIScec-ctl [−h] [−d <dev>] [many other options]
DESCRIPTIONThe cec-ctl tool is used to control cec devices. It is able to control almost any aspect of such devices covering the full CEC API. The easiest way to quickly test a CEC adapter of an HDMI output is: cec-ctl -d/dev/cecX --playback -S And for an HDMI input: cec-ctl -d/dev/cecX --tv -S Both commands configure the CEC adapter and show the CEC topology. To put a display to standby use: cec-ctl -d/dev/cecX --to 0 --standby To wake up the display: cec-ctl -d/dev/cecX --to 0 --image-view-on To switch the TV to our HDMI output (replace the physical address with what cec-ctl -d/dev/cecX reported): cec-ctl -d/dev/cecX --to 0 --active-source phys-addr=1.0.0.0 Instead of '-d/dev/cecX' you can also write this as '-dX'. And instead of '--to 0' you can also write this as '-t0'.
OPTIONS−d, −−device <dev> Use device <dev> as the CEC device. If <dev> is a number, then /dev/cec<dev> is used. −D, −−driver <drv> Use a cec device that has driver name <drv>, as returned by the CEC_ADAP_G_CAPS ioctl. This option can be combined with −a to uniquely identify a CEC device without having to rely on the device node number. −a, −−adapter <adap-name> Use a cec device that has adapter name <adap-name>, as returned by the CEC_ADAP_G_CAPS ioctl. This option can be combined with −D to uniquely identify a CEC device without having to rely on the device node number. −v, −−verbose Turn on verbose reporting. −w, −−wall−clock Show timestamps as wall-clock time. This also turns on verbose reporting. −h, −−help Prints the help message. −p, −−phys−addr <addr> Use this physical address. The address can be a number (e.g. 0 or 0x11b1) or formatted as a.b.c.d where each component is a hex value from 0-f (e.g. 0.0.0.0 or 1.1.b.1). −e, −−phys−addr−from−edid <path> Parse the given EDID file (in raw binary format) and extract the physical address. If the EDID file does not exist or does not contain a physical address, then invalidate the physical address. −E, −−phys−addr−from−edid−poll <path> Parse the given EDID file (in raw binary format) and extract the physical address. If the EDID file does not exist or does not contain a physical address, then invalidate the physical address. Poll for changes in this EDID file every 100 ms and, if changed, update the physical address. This provides a way for Pulse-Eight (or similar) USB CEC dongles to become aware of HDMI disconnect and reconnect events. −o, −−osd−name <name> Use this OSD name. The maximum length is 14 characters. −V, −−vendor−id <id> Use this vendor ID. The vendor ID is a number from 0x0 to 0xffffff. −l, −−logical−address Show first configured logical address or nothing if the device is unconfigured. Useful for scripts, e.g.: la=`cec-ctl -s -l` −L, −−logical−addresses Show all configured logical addresses or nothing if the device is unconfigured. Useful for scripts, e.g.: las=`cec-ctl -s -L` −C, −−clear Clear all logical addresses, leaving the CEC device unconfigured. −n, −−no−reply By default when sending a CEC message that expects a reply this utility will wait for that reply. With this option it will just send it without waiting for the reply. This option applies to the messages following this option. It acts as a toggle, so after you specify it a second time then the following messages will wait for a reply again. −N, −−non−blocking Transmit messages in non-blocking mode. −t, −−to <la> Send the message to the given logical address (0-15). −f, −−from <la> Send message from the given logical address. It is only necessary to use this option if multiple logical addresses are claimed. By default the first assigned logical address will be used. −r, −−show−raw Show the raw CEC message in hex. −s, −−skip−info Skip the Driver Info output section. −S, −−show−topology Show the CEC topology, detecting which other CEC devices are on the CEC bus. −P, −−poll Send a poll message. −T, −−trace Trace all called ioctls. Useful for debugging. −−cec−version−1.4 Use CEC Version 1.4 instead of 2.0 (the default). −−allow−unreg−fallback Allow fallback to Unregistered if all logical addresses are claimed. By default the adapter will remain unconfigured. −−no−rc−passthrough Disable the RC passthrough. By default remote control CEC messages are passed on as input keystrokes (the CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU flag is set when calling the CEC_ADAP_S_LOG_ADDRS ioctl), but this can be blocked by using this option. −−reply−to−followers The reply will be sent to followers as well. By default the reply will only go to the follower that initiated the CEC message. But if you have other followers running as well, then by giving this option they will also receive the reply. −−timeout <ms> Set the reply timeout in milliseconds (default is 1000 ms). −−tv Configure the CEC adapter as a TV. −−record Configure the CEC adapter as a recording and playback device. −−tuner Configure the CEC adapter as a tuner device. −−playback Configure the CEC adapter as a playback device. −−audio Configure the CEC adapter as an audio system device. −−processor Configure the CEC adapter as a processor device. −−switch Configure the CEC adapter as a pure CEC switch. −−cdc−only Configure the CEC adapter as a CDC-only device. −−unregistered Configure the CEC adapter as an unregistered device. −−feat−record−tv−screen Signal the Record TV Screen feature. −−feat−set−osd−string Signal the Set OSD String feature. −−feat−deck−control Signal the Deck Control feature. −−feat−set−audio−rate Signal the Set Audio Rate feature. −−feat−sink−has−arc−tx Signal the sink ARC Tx feature. −−feat−source−has−arc−rx Signal the source ARC Rx feature. −−rc−tv−profile−1 Signal RC TV Profile 1. −−rc−tv−profile−2 Signal RC TV Profile 2. −−rc−tv−profile−3 Signal RC TV Profile 3. −−rc−tv−profile−4 Signal RC TV Profile 4. −−rc−src−dev−root Signal that the RC source has a Dev Root Menu. −−rc−src−dev−setup Signal that the RC source has a Dev Setup Menu. −−rc−src−contents Signal that the RC source has a Contents Menu. −−rc−src−media−top Signal that the RC source has a Media Top Menu. −−rc−src−media−context Signal that the RC source has a Media Context Menu. −m, −−monitor Start monitoring CEC traffic. This will monitor broadcast messages, messages directed to this CEC adapter and messages transmitted by this CEC adapter. Directed messages between other CEC devices are not monitored. This option requires root. −M, −−monitor−all Start monitoring all CEC traffic. This will monitor all CEC messages, including directed messages between other CEC devices. This option requires root. Not all CEC devices support this monitoring mode. It will fallback to regular monitoring mode if it is not supported. −−monitor−pin Start monitoring and analyzing the low-level CEC pin transitions. This is only possible if the device has the CEC_CAP_MONITOR_PIN capability. This option requires root. When in pin monitoring mode all 0->1 and 1->0 CEC pin transitions are monitored and analysed. This is effectively a cheap CEC bus analyzer. −−monitor−time <secs> Monitor for the given number of seconds, then exit. The default (0) is to monitor forever. −−ignore <la>,<opcode> Ignore messages from logical address <la> and opcode <opcode> when monitoring. "all" can be used for <la> or <opcode> to match all logical addresses or opcodes. To ignore poll messages use "poll" as <opcode>. −−store−pin <to> Store the CEC pin events to the given file. This can be read and analyzed later via the −−analyze−pin option. Use − to write to stdout instead of to a file. −−analyze−pin <from> Read and analyze the CEC pin events from the given file. Use − to read from stdin instead of from a file. −−test−power−cycle [polls=<n>][,sleep=<secs>] This option tests the power cycle behavior of the display. It polls up to <n> times (default 15), waiting for a state change. If that fails then it waits <secs> seconds (default 10) before retrying this. −−stress−test−power−cycle cnt=<count>[,polls=<n>][,max-sleep=<maxsecs>][,min-sleep=<minsecs>][,seed=<seed>][,repeats=<reps>][,sleep-before-on=<secs1>][,sleep-before-off=<secs2>] This option performs a stress test for a display: it power cycles the display <count> times using the CEC Standby and Image View On commands. If <count> is 0, then never stop. It polls up to <n> times (default 30), waiting for a state change. If <maxsecs> is non-zero (0 is the default), then sleep for a random number of seconds between <minsecs> (0 is the default) and <maxsecs> before each <Standby> or <Image View On> message. If <seed> is specified, then set the randomizer seed to that value instead of using the current time as seed. If <reps> is specified, then repeat the <Image View On> and <Standby> up to <reps> times. Note that this test should work without needed any repeats. If a non-zero <reps> value is needed in order to pass this test, then that indicates a problem. If <secs1> is specified, then sleep for <secs1> seconds before transmitting <Image View On>. If <secs2> is specified, then sleep for <secs2> seconds before transmitting <Standby>. −−help−all Prints the help message for all options. −−help−audio−rate−control Show help for the Audio Rate Control feature. −−help−audio−return−channel−control Show help for the Audio Return Channel Control feature. −−help−capability−discovery−and−control Show help for the Capability Discovery and Control feature. −−help−deck−control Show help for the Deck Control feature. −−help−device−menu−control Show help for the Device Menu Control feature. −−help−device−osd−transfer Show help for the Device OSD Transfer feature. −−help−dynamic−audio−lipsync Show help for the Dynamic Audio Lipsync feature. −−help−htng Show help for the Hospitality Profile Next Generation feature. This is an optional CEC extension for Hotel displays and is not generally available for regular displays. See http://www.htng.org for more information. −−help−osd−display Show help for the OSD Display feature. −−help−one−touch−play Show help for the One Touch Play feature. −−help−one−touch−record Show help for the One Touch Record feature. −−help−power−status Show help for the Power Status feature. −−help−remote−control−passthrough Show help for the Remote Control Passthrough feature. −−help−routing−control Show help for the Routing Control feature. −−help−standby Show help for the Standby feature. −−help−system−audio−control Show help for the System Audio Control feature. −−help−system−information Show help for the System Information feature. −−help−timer−programming Show help for the Timer Programming feature. −−help−tuner−control Show help for the Tuner Control feature. −−help−vendor−specific−commands Show help for the Vendor Specific Commands feature.
EXIT STATUSOn success, it returns 0. Otherwise, it will return the error code.
BUGSThis manual page is a work in progress. Bug reports or questions about this utility should be sent to the linux-media@vger.kernel.org mailinglist. 0
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