Add arduino-rx + update ggwave-mod

examples/arduino-tx/arduino-tx.ino

@@ -0,0 +1,47 @@
+#include "ggwave.h"
+
+#define kPinLed0 13
+#define kPinSpeaker 10
+
+void setup() {
+    pinMode(kPinLed0,    OUTPUT);
+    pinMode(kPinSpeaker, OUTPUT);
+}
+
+char txt[64]; // used for printf
+
+void loop() {
+    char tx[16];
+    memset(tx, 0, sizeof(tx));
+    strcpy(tx, "Hello World!");
+
+    digitalWrite(kPinLed0, HIGH);
+    GGWave::send(kPinSpeaker, tx, GGWave::TX_ARDUINO_512_FASTEST);
+    digitalWrite(kPinLed0, LOW);
+
+    delay(250);
+
+    digitalWrite(kPinLed0, HIGH);
+    GGWave::send(kPinSpeaker, "This is GGWave!!", GGWave::TX_ARDUINO_512_FASTEST);
+    digitalWrite(kPinLed0, LOW);
+
+    delay(250);
+
+    digitalWrite(kPinLed0, HIGH);
+    GGWave::send(kPinSpeaker, "This is NORMAL", GGWave::TX_ARDUINO_512_NORMAL);
+    digitalWrite(kPinLed0, LOW);
+
+    delay(250);
+
+    digitalWrite(kPinLed0, HIGH);
+    GGWave::send(kPinSpeaker, "This is FAST", GGWave::TX_ARDUINO_512_FAST);
+    digitalWrite(kPinLed0, LOW);
+
+    delay(250);
+
+    digitalWrite(kPinLed0, HIGH);
+    GGWave::send(kPinSpeaker, "This is FASTEST", GGWave::TX_ARDUINO_512_FASTEST);
+    digitalWrite(kPinLed0, LOW);
+
+    delay(5000);
+}