Archiving a bunch of old stuff

oldstuff/arduino/msaqsg/ch02/LEDSwitch/LEDSwitch.ino

@@ -0,0 +1,54 @@
+const unsigned int LED_PIN = 13;
+const unsigned int BAUD_RATE = 9600;
+
+void ledOn() {
+    digitalWrite(LED_PIN, HIGH);
+    Serial.println("LED on");
+}
+
+void ledOff() {
+    digitalWrite(LED_PIN, LOW);
+    Serial.println("LED off");
+}
+
+void ledBlink() {
+    Serial.println("BLINKY TIME");
+    for (int i = 0; i < 5; i++) {
+        ledOn();
+        delay(100);
+        ledOff();
+        delay(100);
+    }
+}
+
+void handleInput() {
+    int c = Serial.read();
+
+    switch (c) {
+    case '1':
+        ledOn();
+        break;
+    case '2':
+        ledOff();
+        break;
+    case '3':
+        ledBlink();
+        break;
+    default:
+        Serial.print("Unknown command: ");
+        Serial.println(c);
+    }
+}
+
+void setup() {
+    pinMode(LED_PIN, OUTPUT);
+    Serial.begin(BAUD_RATE);
+}
+
+void loop() {
+    if (Serial.available() <= 0) {
+        return;
+    }
+
+    handleInput();
+}

oldstuff/arduino/msaqsg/ch02/LEDSwitch/Makefile

@@ -0,0 +1 @@
+../../../arduino.mk