Buzzer
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⌘Ctrlk
The host uses this command to start a buzzer for playing a sequence of tones. Each sequence can have a minimum of 1 to maximum of 10 tones.
The sequence of events is as follows:
The host ensures the device is not currently running another command, for example, that it is not running a transaction using Command 0x1001 - Start Transaction.
The host composes a command request in the format below and sends it to the device.
The device plays a specific tone sequence as the command specified. After finish, the device sends Notification 0x1805 - User Interface Operation Complete to report Buzzer/Buzzer Result.
The host should wait for Notification 0x1805 - User Interface Operation Complete before sending another command.
If the buzzer is currently playing a sequence of tones and any transaction that uses the buzzer to make a sound is started, the device will stop the buzzer for that transaction to take over.
Beginning of any wrappers, at minimum including Request Message
1805 = Command 0x1805 - Buzzer
81
N*4
N = Number of tones
0x01 – Min (1 tone)
0x0A – Max (10 tones)
4 = 4 bytes data parameter for each tone in the sequence Byte0-Byte1 – Frequency in units of 1 Hz
0x0000..0x0031 (< 50 Hz, Silent)
0x0032 - Min (50 Hz)
0x0FA0 - Max (4000 Hz)
0x0FA1..0xFFFF (> 4000 Hz, Error)
Byte 2-Byte3 – Duration of tone in units of 1 millisecond
B
R
0x0001 – Min (1 ms)
0xFFFF – Max (65535 ms)
End of any wrappers, at minimum including Request Message
Beginning of any wrappers, at minimum including Response Message
1805 = Command 0x1805 - Buzzer
No parameters.
End of any wrappers, at minimum including Response Message
Last updated
AA00 810401031805 8418 1805 8114 00C8 01F4 0190 01F4 0258 01F4 0190 01F4 00C8 01F4AA00 810482031805 820401000000