Hang up an established call or during incoming rings. Depending on the modems mode (synchronous or asynchronous) the method will return differently, see below for more detail.
voice.hangCall()
none
int In asynchronous mode, hangCall() returns 0 if the last command is still executing, 1 if there is success, and >1 in case of an error. In synchronous mode, it returns 1 if the call is hung, 0 if not.
// libraries
#include <MKRGSM.h>
// PIN Number
#define PINNUMBER ""
// initialize the library instance
GSM gsmAccess; // include a 'true' parameter for debug enabled
GSMVoiceCall vcs;
char numtel[20]; // buffer for the incoming call
void setup()
{
// initialize serial communications
Serial.begin(9600);
Serial.println("Receive Voice Call");
// connection state
boolean notConnected = true;
// Start GSM shield
// If your SIM has PIN, pass it as a parameter of begin() in quotes
while(notConnected)
{
if(gsmAccess.begin(PINNUMBER)==GSM_READY)
notConnected = false;
else
{
Serial.println("Not connected");
delay(1000);
}
}
// This makes sure the modem notifies correctly incoming events
vcs.hangCall();
Serial.println("Waiting Call");
}
void loop()
{
// Check the status of the voice call
switch (vcs.getvoiceCallStatus())
{
case IDLE_CALL: // Nothing is happening
break;
case CALLING: // This should never happen, as we are not placing a call
Serial.println("CALLING");
break;
case RECEIVINGCALL: // Yes! Someone is calling us
Serial.println("RECEIVING CALL");
// Retrieve the calling number
vcs.retrieveCallingNumber(numtel, 20);
// Print the calling number
Serial.print("Number:");
Serial.println(numtel);
// Answer the call, establish the call
vcs.answerCall();
break;
case TALKING: // In this case the call would be established
Serial.println("TALKING. Enter line to interrupt.");
while(Serial.read()!='\n')
delay(100);
vcs.hangCall();
Serial.println("HANG. Waiting Call.");
break;
}
delay(1000);
}