[Morse] Added Morse transmit AM example

examples/Morse/Morse_Transmit_AM/Morse_Transmit_AM.ino

@@ -0,0 +1,131 @@
+/*
+   RadioLib Morse Transmit AM Example
+
+   This example sends Morse code message using
+   SX1278's FSK modem. The signal is modulated
+   as OOK, and may be demodulated in AM mode.
+
+   Other modules that can be used for Morse Code
+   with AM modulation:
+    - SX127x/RFM9x
+    - RF69
+    - SX1231
+    - CC1101
+    - Si443x/RFM2x
+
+   For default module settings, see the wiki page
+   https://github.com/jgromes/RadioLib/wiki/Default-configuration
+
+   For full API reference, see the GitHub Pages
+   https://jgromes.github.io/RadioLib/
+*/
+
+// include the library
+#include <RadioLib.h>
+
+// SX1278 has the following connections:
+// NSS pin:   10
+// DIO0 pin:  2
+// RESET pin: 9
+// DIO1 pin:  3
+SX1278 radio = new Module(10, 2, 9, 3);
+
+// or using RadioShield
+// https://github.com/jgromes/RadioShield
+//SX1278 radio = RadioShield.ModuleA;
+
+// create AFSK client instance using the FSK module
+// pin 5 is connected to SX1278 DIO2
+AFSKClient audio(&radio, 5);
+
+// create Morse client instance using the AFSK instance
+MorseClient morse(&audio);
+
+void setup() {
+  Serial.begin(9600);
+
+  // initialize SX1278 with default settings
+  Serial.print(F("[SX1278] Initializing ... "));
+  int state = radio.beginFSK();
+
+  // when using one of the non-LoRa modules for Morse code
+  // (RF69, CC1101, Si4432 etc.), use the basic begin() method
+  // int state = radio.begin();
+
+  if(state == RADIOLIB_ERR_NONE) {
+    Serial.println(F("success!"));
+  } else {
+    Serial.print(F("failed, code "));
+    Serial.println(state);
+    while(true);
+  }
+
+  // initialize Morse client
+  Serial.print(F("[Morse] Initializing ... "));
+  // tone frequency:              400 Hz
+  // speed:                       20 words per minute
+  state = morse.begin(400);
+  if(state == RADIOLIB_ERR_NONE) {
+    Serial.println(F("success!"));
+  } else {
+    Serial.print(F("failed, code "));
+    Serial.println(state);
+    while(true);
+  }
+
+  // after that, set mode to OOK to emulate AM modulation
+  Serial.print(F("[SX1278] Switching to OOK ... "));
+  state = radio.setOOK(true);
+  if(state == RADIOLIB_ERR_NONE) {
+    Serial.println(F("success!"));
+  } else {
+    Serial.print(F("failed, code "));
+    Serial.println(state);
+    while(true);
+  }
+}
+
+void loop() {
+  Serial.print(F("[Morse] Sending Morse data ... "));
+
+  // MorseClient supports all methods of the Serial class
+  // NOTE: Characters that do not have ITU-R M.1677-1
+  //       representation will not be sent! Lower case
+  //       letters will be capitalized.
+
+  // send start signal first
+  morse.startSignal();
+
+  // Arduino String class
+  String aStr = "Arduino String";
+  morse.print(aStr);
+
+  // character array (C-String)
+  morse.print("C-String");
+
+  // string saved in flash
+  morse.print(F("Flash String"));
+
+  // character
+  morse.print('c');
+
+  // byte
+  // formatting DEC/HEX/OCT/BIN is supported for
+  // any integer type (byte/int/long)
+  morse.print(255, HEX);
+
+  // integer number
+  int i = 1000;
+  morse.print(i);
+
+  // floating point number
+  // NOTE: When using println(), the transmission will be
+  //       terminated with end-of-work signal (...-.-).
+  float f = -3.1415;
+  morse.println(f, 3);
+
+  Serial.println(F("done!"));
+
+  // wait for a second before transmitting again
+  delay(1000);
+}