Moved whole Arduino sketchbook to GIT (nothing interesting :-)

[mirrors/Programs.git] / arduino / SoundMix / SoundMix.pde

diff --git a/arduino/SoundMix/SoundMix.pde b/arduino/SoundMix/SoundMix.pde
new file mode 100755 (executable)
index 0000000..6466151
--- /dev/null
+++ b/arduino/SoundMix/SoundMix.pde
@@ -0,0 +1,36 @@
+/*
+ * Bit-bang sound
+ * <~~Harvie 2oo8
+ */
+
+#define sndout 13
+
+char mixer;
+
+void sound(char sndpin, float freq, float duration) { //Play bit-bang sound
+  if(duration<=0) return; if(freq<=0) { delay(duration); return; }
+  freq=((1000000/2)/freq); //Convert freq to delay (us)
+  duration*=1000; //Convert duration to us
+  pinMode(sndpin, OUTPUT);
+  for(;duration>0;duration-=2*freq) {
+    digitalWrite(sndpin, HIGH); delayMicroseconds(freq);
+    digitalWrite(sndpin, LOW);  delayMicroseconds(freq);
+  }
+  pinMode(sndpin, INPUT); //Close pin to avoid noise (optional)
+}
+
+void setup() { // run once, when the sketch starts
+  pinMode(sndout, OUTPUT);
+  pinMode(sndout-1, INPUT);
+}
+
+void loop() { // run over and over again
+  //delay(10000); return;//Silence! I'll kill you!
+  //float i=0; while(1) { sound(sndout, sin(i+=0.01)*550, 10); sound(sndout, cos(i)*400, 10); }
+  digitalWrite(sndout, digitalRead(sndout-1));
+  /* int octave, duration;
+  char melody[]="CCDEECCFFAAGGE-CCDEGGEFEDDCC-CCDEECCFFAAGGE-CCDEGGEFEDDC"; octave=1; duration=300; //Bob Marley's Redemption song - intro ;D
+  play_melody(sndout, melody, octave, duration); */
+  //delay(2000);
+}
+