Initial commit

LICENSE

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

README.md

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+# 2020 08 18 Morse Arduino
+
+This is a one time project to demonstrate microcontroler programming basics.

main.ino

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+const int ABC = 27;
+
+String table[ABC] = {
+	".-",
+	"-...",
+	"-,-,",
+	"-..",
+	".",
+	"..-.",
+	"--.",
+	"....",
+	"..",
+	".---",
+	"-.-",
+	".-..",
+	"--",
+	"-.",
+	"---",
+	".--.",
+	"--.-",
+	".-.",
+	"...",
+	"-",
+	"..-",
+	"...-",
+	".--",
+	"-..-",
+	"-.--",
+	"--..",
+};
+
+
+void setup() {
+	pinMode(50, OUTPUT);
+	Serial.begin(9600);
+}
+
+void loop() {
+	if (Serial.available()) {
+		if (emit(Serial.read())) {
+			delay(500);
+		}
+	}
+}
+
+bool emit(char c) {
+	if (c >= 'a' && c < ABC + 'a') {
+		for (int i = 0; i < table[c - 'a'].length(); i++) {
+			if (table[c - 'a'][i] == '.') {
+				digitalWrite(50, HIGH);
+				delay(100);
+			} else {
+				digitalWrite(50, HIGH);
+				delay(300);
+			}
+			digitalWrite(50, LOW);
+			delay(100);
+		}
+		return true;
+	}
+	return false;
+}