gsmHeadset (Function)

This function can enable the headset interface on the device, routing all audio in- and output from the GSM modem through the audio jack to a connected headset.
Voice and DTMF functionality will be disabled when this function is used.

If gsmHandsfree is already enabled or the GSM modem is not powered on, the headset interface can not be enabled.

Input:        

enable : BOOL

Returns: BOOL

Declaration:

FUNCTION gsmHeadset : BOOL;
VAR_INPUT
   enable : BOOL;
END_VAR;

Example:

INCLUDE rtcu.inc
 
PROGRAM test;
 
// Turn on power to the GSM module
gsmPower(power := TRUE);
 
BEGIN
   ...
   // Make a call
   IF gsmMakeCall(phonenumber := "+44 22 33 44 55") THEN
      // Successful, we have established a connection
      // Enable headset for 10 seconds
      gsmHeadset(enable:=TRUE);
      Sleep(delay:=10000);
      // Disable headset
      gsmHeadset(enable:=FALSE);
      // Hangup the phone
      gsmHangup();
      ...
   END_IF;
END;
 
END_PROGRAM;