Unsolicited Ui Status Messages; Ckev, Key Press Echo Output - Motorola G24 Guide Developer's Manual

UI (User Interface)

Unsolicited UI Status Messages

Certain actions performed in the G24 UI by the user are transmitted to all attached accessories,
primarily as a notification of a change in state. For example, notification of a phone-book storage,
recall operation or setting a call restriction level. These messages are required by certain
accessories to maintain local information, or to provide additional information on an auxiliary
display.

+CKEV, Key Press Echo Output

This unsolicited message is sent when local key press echo is enabled (as described in
Mobile Equipment Event Reporting" on page
identity of the key is broadcast to all the accessories, as well as information about whether the key
was pressed or released. This command can be configured to send key presses from the G24
keypad only, or from other accessories as well.
When the phone is locked and a digit or a softkey is pressed, the "@" character is used in the
message event instead of the actual key being pressed. This prevents passwords or codes entered
by the user being monitored or stolen by attached accessories (for example, Bluetooth devices).
Unsolicited Report
+CKEV: <key>,<press>
The following table shows the +CKEV parameters.
Example
AT+CMER=?
+CMER: (0),(0,1,2),(0,1),(0,1),(0)
OK
AT+CMER?
+CMER: 0,0,0,0,0
OK
AT+CMER=0,2,0,0,0
OK
AT+CMER?
+CMER: 0,2,0,0,0
OK
AT+CKPD=M
OK
+CKEV: "M",1
+CKEV: "M",0
3-320
Table 3-210: +CKEV Parameters
<Parameter>
<key> Key that changed state
<press> 0 Key released
1 Key pressed
AT Commands Reference Manual
3-314) and a key is pressed on the G24 keypad. The
Description
"+CMER,
December 31, 2007