kitac_mbed_WS / Mbed 2 deprecated example_01_speaker Featured

スピーカーで音を鳴らす

Dependencies:   mbed

main.cpp@3:722a88ffb4f7, 2015-08-22 (annotated)

Committer:
hagi_hara
Date:
Sat Aug 22 09:59:15 2015 +0000
Revision:
3:722a88ffb4f7
Parent:
2:44b8465482f9 
Change for NUCLEO

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hagi_hara 2:44b8465482f9 1 //example_01_speaker
hagi_hara 0:f5bba12ef049 2 //スピーカーを鳴らすサンプルコード
hagi_hara 0:f5bba12ef049 3 #include "mbed.h"
hagi_hara 0:f5bba12ef049 4
hagi_hara 2:44b8465482f9 5 #define SP_OFF 0.0
hagi_hara 2:44b8465482f9 6 #define SP_ON 0.5
hagi_hara 0:f5bba12ef049 7
hagi_hara 2:44b8465482f9 8 #define mC 261.626 //「ド」の周波数(Hz)
hagi_hara 2:44b8465482f9 9
hagi_hara 2:44b8465482f9 10
hagi_hara 3:722a88ffb4f7 11 PwmOut speaker(A0);//A0ピンを出力ピンに設定
hagi_hara 0:f5bba12ef049 12
hagi_hara 0:f5bba12ef049 13 int main()
hagi_hara 0:f5bba12ef049 14 {
hagi_hara 0:f5bba12ef049 15 //音を鳴らす
hagi_hara 0:f5bba12ef049 16 speaker.period(1.0/mC);
hagi_hara 2:44b8465482f9 17 speaker.write(SP_ON);
hagi_hara 0:f5bba12ef049 18
hagi_hara 0:f5bba12ef049 19 //５秒待つ
hagi_hara 0:f5bba12ef049 20 wait(5.0);
hagi_hara 0:f5bba12ef049 21
hagi_hara 0:f5bba12ef049 22 //音を止める
hagi_hara 2:44b8465482f9 23 speaker.write(SP_OFF);
hagi_hara 0:f5bba12ef049 24
hagi_hara 0:f5bba12ef049 25
hagi_hara 1:42c121dda003 26 while(true);
hagi_hara 0:f5bba12ef049 27 }