kitac_mbed_WS / Mbed 2 deprecated example_01_speaker Featured

スピーカーで音を鳴らす

Dependencies:   mbed

Diff: main.cpp

Revision:
2:44b8465482f9
Parent:
1:42c121dda003
Child:
3:722a88ffb4f7
diff -r 42c121dda003 -r 44b8465482f9 main.cpp
--- a/main.cpp	Sat Aug 15 07:07:09 2015 +0000
+++ b/main.cpp	Sat Aug 15 07:22:42 2015 +0000
@@ -1,22 +1,26 @@
+//example_01_speaker
 //スピーカーを鳴らすサンプルコード
 #include "mbed.h"
 
-#define mC 261.626 //「ド」の周波数
+#define SP_OFF 0.0
+#define SP_ON 0.5
 
-//ピン設定
-PwmOut speaker(dp1);
+#define mC 261.626 //「ド」の周波数(Hz)
+
+
+PwmOut speaker(dp1);//dp1ピンを出力ピンに設定
 
 int main()
 {
     //音を鳴らす
     speaker.period(1.0/mC);
-    speaker = 0.5;
+    speaker.write(SP_ON);
 
     //５秒待つ
     wait(5.0);
     
     //音を止める
-    speaker = 0.0;
+    speaker.write(SP_OFF);
     
     
     while(true);