Add Library

libraries/Adafruit_FONA_Library/examples/IncomingCall/IncomingCall.ino

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+// FONA Incoming Call Number Example
+// Listens for a call and displays the phone number of the caller (if available).
+// Use this example to add phone call detection to your own FONA sketch.
+#include "Adafruit_FONA.h"
+
+// Pins which are connected to the FONA.
+// Note that this is different from FONAtest!
+#define FONA_RX            3
+#define FONA_TX            4
+#define FONA_RST           5
+
+// Note you need to map interrupt number to pin number
+// for your board.  On an Uno & Mega interrupt 0 is
+// digital pin 2, and on a Leonardo interrupt 0 is
+// digital pin 3.  See this page for a complete table:
+//   http://arduino.cc/en/Reference/attachInterrupt
+// Make sure this interrupt pin is connected to FONA RI!
+#define FONA_RI_INTERRUPT  0
+
+// We default to using software serial. If you want to use hardware serial
+// (because softserial isnt supported) comment out the following three lines 
+// and uncomment the HardwareSerial line
+#include <SoftwareSerial.h>
+SoftwareSerial fonaSS = SoftwareSerial(FONA_TX, FONA_RX);
+SoftwareSerial *fonaSerial = &fonaSS;
+
+// Hardware serial is also possible!
+//  HardwareSerial *fonaSerial = &Serial1;
+
+Adafruit_FONA fona = Adafruit_FONA(FONA_RST);
+
+void setup() {
+  Serial.begin(115200);
+  Serial.println(F("FONA incoming call example"));
+  Serial.println(F("Initializing....(May take 3 seconds)"));
+
+  fonaSerial->begin(4800);
+  if (! fona.begin(*fonaSerial)) {
+    Serial.println(F("Couldn't find FONA"));
+    while(1);
+  }
+  Serial.println(F("FONA is OK"));
+
+  // Enable incoming call notification.
+  if(fona.callerIdNotification(true, FONA_RI_INTERRUPT)) {
+    Serial.println(F("Caller id notification enabled."));
+  }
+  else {
+    Serial.println(F("Caller id notification disabled"));
+  }
+}
+
+void loop(){
+  // Create a small string buffer to hold incoming call number.
+  char phone[32] = {0};
+  // Check for an incoming call.  Will return true if a call is incoming.
+  if(fona.incomingCallNumber(phone)){
+    Serial.println(F("RING!"));
+    Serial.print(F("Phone Number: "));
+    Serial.println(phone);
+  }
+}