Move USB Host Shield and Arduino core to lib/ (#13973)

lib/usbhost/USB_Host_Shield_2.0/examples/adk/ArduinoBlinkLED/ArduinoBlinkLED.ino

@@ -0,0 +1,89 @@
+// The source for the Android application can be found at the following link: https://github.com/Lauszus/ArduinoBlinkLED
+// The code for the Android application is heavily based on this guide: http://allaboutee.com/2011/12/31/arduino-adk-board-blink-an-led-with-your-phone-code-and-explanation/ by Miguel
+#include <adk.h>
+
+//
+// CAUTION! WARNING! ATTENTION! VORSICHT! ADVARSEL! ¡CUIDADO! ВНИМАНИЕ!
+//
+// Pin 13 is occupied by the SCK pin on various Arduino boards,
+// including Uno, Duemilanove, etc., so use a different pin for those boards.
+//
+// CAUTION! WARNING! ATTENTION! VORSICHT! ADVARSEL! ¡CUIDADO! ВНИМАНИЕ!
+//
+#if defined(LED_BUILTIN)
+#define LED LED_BUILTIN // Use built in LED
+#else
+#define LED 9 // Set to something here that makes sense for your board.
+#endif
+
+
+// Satisfy IDE, which only needs to see the include statment in the ino.
+#ifdef dobogusinclude
+#include <spi4teensy3.h>
+#include <SPI.h>
+#endif
+
+USB Usb;
+ADK adk(&Usb, "TKJElectronics", // Manufacturer Name
+              "ArduinoBlinkLED", // Model Name
+              "Example sketch for the USB Host Shield", // Description (user-visible string)
+              "1.0", // Version
+              "http://www.tkjelectronics.dk/uploads/ArduinoBlinkLED.apk", // URL (web page to visit if no installed apps support the accessory)
+              "123456789"); // Serial Number (optional)
+
+uint32_t timer;
+bool connected;
+
+void setup() {
+  Serial.begin(115200);
+#if !defined(__MIPSEL__)
+  while (!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
+#endif
+  if (Usb.Init() == -1) {
+    Serial.print("\r\nOSCOKIRQ failed to assert");
+    while (1); // halt
+  }
+  pinMode(LED, OUTPUT);
+  Serial.print("\r\nArduino Blink LED Started");
+}
+
+void loop() {
+  Usb.Task();
+
+  if (adk.isReady()) {
+    if (!connected) {
+      connected = true;
+      Serial.print(F("\r\nConnected to accessory"));
+    }
+
+    uint8_t msg[1];
+    uint16_t len = sizeof(msg);
+    uint8_t rcode = adk.RcvData(&len, msg);
+    if (rcode && rcode != hrNAK) {
+      Serial.print(F("\r\nData rcv: "));
+      Serial.print(rcode, HEX);
+    } else if (len > 0) {
+      Serial.print(F("\r\nData Packet: "));
+      Serial.print(msg[0]);
+      digitalWrite(LED, msg[0] ? HIGH : LOW);
+    }
+
+    if (millis() - timer >= 1000) { // Send data every 1s
+      timer = millis();
+      rcode = adk.SndData(sizeof(timer), (uint8_t*)&timer);
+      if (rcode && rcode != hrNAK) {
+        Serial.print(F("\r\nData send: "));
+        Serial.print(rcode, HEX);
+      } else if (rcode != hrNAK) {
+        Serial.print(F("\r\nTimer: "));
+        Serial.print(timer);
+      }
+    }
+  } else {
+    if (connected) {
+      connected = false;
+      Serial.print(F("\r\nDisconnected from accessory"));
+      digitalWrite(LED, LOW);
+    }
+  }
+}