update sample for Arduino Wifi

update sample for Arduino Wifi to only send notes when connected.
This sample is untested (I have no Wifi shield)

Author: lathoub

examples/NoteOnOffEverySecWifi/NoteOnOffEverySecWifi.ino

@@ -12,8 +12,8 @@ char ssid[] = "yourNetwork"; //  your network SSID (name)
 char pass[] = "secretPassword";    // your network password (use for WPA, or use as key for WEP)
 int keyIndex = 0;            // your network key Index number (needed only for WEP)
 
-
 unsigned long t0 = millis();
+bool isConnected = false;
 
 APPLEMIDI_CREATE_INSTANCE(WiFiUDP, AppleMIDI); // see definition in AppleMidi_Defs.h
 
@@ -86,7 +86,7 @@ void loop()
 
   // send a note every second
   // (dont cáll delay(1000) as it will stall the pipeline)
-  if ((millis() - t0) > 1000)
+  if (isConnected && (millis() - t0) > 1000)
   {
     t0 = millis();
     //   Serial.print(".");
@@ -108,6 +108,7 @@ void loop()
 // rtpMIDI session. Device connected
 // -----------------------------------------------------------------------------
 void OnAppleMidiConnected(char* name) {
+  isConnected = true;
   //  Serial.print("Connected to session ");
   //  Serial.println(name);
 }
@@ -116,6 +117,7 @@ void OnAppleMidiConnected(char* name) {
 // rtpMIDI session. Device disconnected
 // -----------------------------------------------------------------------------
 void OnAppleMidiDisconnected() {
+  isConnected = false;
   //  Serial.println("Disconnected");
 }
 
@@ -143,4 +145,4 @@ void OnAppleMidiNoteOff(byte channel, byte note, byte velocity) {
   Serial.print(" velocity:");
   Serial.print(velocity);
   Serial.println();
-}
+}