Revision 0:f8254b79ffe1, committed 2020-04-20

Comitter:

dshin

Date:

Mon Apr 20 06:34:29 2020 +0000

Commit message:

lab03-pwm-music

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 20 06:34:29 2020 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+#include "pitches.h"
+
+PwmOut buzzer(PTA1);        // buzzer = PTA1
+
+int length = 75;
+
+float frequency[] = {
+    NOTE_E6, NOTE_E6, 0, NOTE_E6, 0, NOTE_C6, NOTE_E6, 0, NOTE_G6, 0, 0,
+    0, NOTE_G5, 0, 0, 0, NOTE_C6, 0, 0, NOTE_G5, 0, 0, NOTE_E5, 0, 0,
+    NOTE_A5, 0, NOTE_B5, 0, NOTE_AS5, NOTE_A5, 0, NOTE_G5, NOTE_E6, NOTE_G6,
+    NOTE_A6, 0, NOTE_F6, NOTE_G6, 0, NOTE_E6, 0, NOTE_C6, NOTE_D6, NOTE_B5,
+    0, 0, NOTE_C6, 0, 0, NOTE_G5, 0, 0, NOTE_E5, 0, 0, NOTE_A5, 0, NOTE_B5,
+    0, NOTE_AS5, NOTE_A5, 0, NOTE_G5, NOTE_E6, NOTE_G6, NOTE_A6, 0, NOTE_F6,
+    NOTE_G6, 0, NOTE_E6, 0, NOTE_C6, NOTE_D6, NOTE_B5, 0, 0
+};
+
+float beat[] = {
+    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 12,
+    12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+    12, 12, 12, 12, 12, 12, 12, 12, 12, 9, 9, 9, 12, 12, 12, 12, 12, 12, 12,
+    12, 12, 12, 12, 12,
+};
+
+int main()
+{
+    while(true) {
+        for(int i = 0; i <= length; i++) {
+            if(frequency[i] == 0) {
+                buzzer = 0.0;
+            } else {
+                buzzer.period(1.0 / frequency[i]);  // period = (1.0 / frequency)
+                buzzer = 0.5;                       // duty cycle = 50%
+            }
+            thread_sleep_for(2500.0 / beat[i]);     // duration = (C / beat) ms
+        }
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os.lib	Mon Apr 20 06:34:29 2020 +0000
@@ -0,0 +1,1 @@
+https://github.com/armmbed/mbed-os/#cf4f12a123c05fcae83fc56d76442015cb8a39e9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pitches.h	Mon Apr 20 06:34:29 2020 +0000
@@ -0,0 +1,89 @@
+// pitches.h
+#define NOTE_C1  33
+#define NOTE_CS1 35
+#define NOTE_D1  37
+#define NOTE_DS1 39
+#define NOTE_E1  41
+#define NOTE_F1  44
+#define NOTE_FS1 46
+#define NOTE_G1  49
+#define NOTE_GS1 52
+#define NOTE_A1  55
+#define NOTE_AS1 58
+#define NOTE_B1  62
+#define NOTE_C2  65
+#define NOTE_CS2 69
+#define NOTE_D2  73
+#define NOTE_DS2 78
+#define NOTE_E2  82
+#define NOTE_F2  87
+#define NOTE_FS2 93
+#define NOTE_G2  98
+#define NOTE_GS2 104
+#define NOTE_A2  110
+#define NOTE_AS2 117
+#define NOTE_B2  123
+#define NOTE_C3  131
+#define NOTE_CS3 139
+#define NOTE_D3  147
+#define NOTE_DS3 156
+#define NOTE_E3  165
+#define NOTE_F3  175
+#define NOTE_FS3 185
+#define NOTE_G3  196
+#define NOTE_GS3 208
+#define NOTE_A3  220
+#define NOTE_AS3 233
+#define NOTE_B3  247
+#define NOTE_C4  262
+#define NOTE_CS4 277
+#define NOTE_D4  294
+#define NOTE_DS4 311
+#define NOTE_E4  330
+#define NOTE_F4  349
+#define NOTE_FS4 370
+#define NOTE_G4  392
+#define NOTE_GS4 415
+#define NOTE_A4  440
+#define NOTE_AS4 466
+#define NOTE_B4  494
+#define NOTE_C5  523
+#define NOTE_CS5 554
+#define NOTE_D5  587
+#define NOTE_DS5 622
+#define NOTE_E5  659
+#define NOTE_F5  698
+#define NOTE_FS5 740
+#define NOTE_G5  784
+#define NOTE_GS5 831
+#define NOTE_A5  880
+#define NOTE_AS5 932
+#define NOTE_B5  988
+#define NOTE_C6  1047
+#define NOTE_CS6 1109
+#define NOTE_D6  1175
+#define NOTE_DS6 1245
+#define NOTE_E6  1319
+#define NOTE_F6  1397
+#define NOTE_FS6 1480
+#define NOTE_G6  1568
+#define NOTE_GS6 1661
+#define NOTE_A6  1760
+#define NOTE_AS6 1865
+#define NOTE_B6  1976
+#define NOTE_C7  2093
+#define NOTE_CS7 2217
+#define NOTE_D7  2349
+#define NOTE_DS7 2489
+#define NOTE_E7  2637
+#define NOTE_F7  2794
+#define NOTE_FS7 2960
+#define NOTE_G7  3136
+#define NOTE_GS7 3322
+#define NOTE_A7  3520
+#define NOTE_AS7 3729
+#define NOTE_B7  3951
+#define NOTE_C8  4186
+#define NOTE_CS8 4434
+#define NOTE_D8  4698
+#define NOTE_DS8 4978