Yasushi TAUCHI / Mbed 2 deprecated Sound_Waon

Dependencies:   mbed

Diff: main.cpp

Revision:
0:2309ea52d6c9
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Dec 26 13:13:15 2011 +0000
@@ -0,0 +1,64 @@
+#define mC 261.626
+#define mD 293.665
+#define mE 329.628
+#define mF 349.228
+#define mG 391.995
+#define mA 440.000
+#define mB 493.883
+
+#include "mbed.h"
+
+Ticker timer;
+AnalogOut sp1(p18);
+float ms[180];
+float m1,m2,m3;
+
+void sound_out(void) {
+    static float j1=0;
+    static float j2=0;
+    static float j3=0;
+    j1=j1+m1;
+    j2=j2+m2;
+    j3=j3+m3;
+    if (j1>180)j1=j1-180;
+    if (j2>180)j2=j2-180;
+    if (j3>180)j3=j3-180;
+    sp1.write((ms[(int)j1]+ms[(int)j2]+ms[(int)j3])/3.0);
+}
+
+int main() {
+    int i;
+    //setting sincurv
+    for (i=0;i<180;i++) {
+        ms[i]=sin(2*3.1415*(float)i/180.0)/2.0+0.5;
+    }
+    timer.attach_us(&sound_out,10); //10kHz
+    //ceg
+    m1=mC*2*180/100000;
+    m2=mE*2*180/100000;
+    m3=mG*2*180/100000;
+    wait(1.0f);
+    //cfa
+    m1=mC*2*180/100000;
+    m2=mF*2*180/100000;
+    m3=mA*2*180/100000;
+    wait(1.0f);
+    //ceg
+    m1=mC*2*180/100000;
+    m2=mE*2*180/100000;
+    m3=mG*2*180/100000;
+    wait(1.0f);
+    //bdg
+    m1=mB*180/100000;
+    m2=mD*2*180/100000;
+    m3=mG*2*180/100000;
+    wait(1.0f);
+    //ceg
+    m1=mC*2*180/100000;
+    m2=mE*2*180/100000;
+    m3=mG*2*180/100000;
+    wait(1.0f);
+    timer.detach();
+    sp1.write(0.0f);
+    while (1);
+}