Junichi Katsu / Mbed 2 deprecated JBB_Sound_effect_test

As a test of the audio amplifier, it is a test to make a sound effect in the program. オーディオアンプのテストとして、プログラムで効果音を作るテストです。

Dependencies:   mbed

main.cpp@0:5231285a0c94, 2014-05-12 (annotated)

Committer:
jksoft
Date:
Mon May 12 13:52:38 2014 +0000
Revision:
0:5231285a0c94
First edition

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jksoft 0:5231285a0c94 1 #include "mbed.h"
jksoft 0:5231285a0c94 2
jksoft 0:5231285a0c94 3 AnalogOut DACout(p18);
jksoft 0:5231285a0c94 4 DigitalOut AMPEnable(p12);
jksoft 0:5231285a0c94 5 DigitalIn SW1(p25);
jksoft 0:5231285a0c94 6 DigitalIn SW2(p26);
jksoft 0:5231285a0c94 7
jksoft 0:5231285a0c94 8 void wave(float volume , float fq , float time)
jksoft 0:5231285a0c94 9 {
jksoft 0:5231285a0c94 10 float w_time = 1.0 / fq;
jksoft 0:5231285a0c94 11
jksoft 0:5231285a0c94 12 AMPEnable = 0;
jksoft 0:5231285a0c94 13 for (float i=0; i<time / w_time; i++) {
jksoft 0:5231285a0c94 14 DACout = volume;
jksoft 0:5231285a0c94 15 wait(w_time/2);
jksoft 0:5231285a0c94 16 DACout = 0.0;
jksoft 0:5231285a0c94 17 wait(w_time/2);
jksoft 0:5231285a0c94 18 }
jksoft 0:5231285a0c94 19 AMPEnable = 1;
jksoft 0:5231285a0c94 20
jksoft 0:5231285a0c94 21 }
jksoft 0:5231285a0c94 22
jksoft 0:5231285a0c94 23 int main() {
jksoft 0:5231285a0c94 24 SW1.mode(PullUp);
jksoft 0:5231285a0c94 25 SW2.mode(PullUp);
jksoft 0:5231285a0c94 26
jksoft 0:5231285a0c94 27 while(1)
jksoft 0:5231285a0c94 28 {
jksoft 0:5231285a0c94 29 if( SW1 == 0 )
jksoft 0:5231285a0c94 30 {
jksoft 0:5231285a0c94 31 for( int i = 0 ; i < 10 ; i++ )
jksoft 0:5231285a0c94 32 {
jksoft 0:5231285a0c94 33 wave( 0.2 , i * 500.0 , 0.2 );
jksoft 0:5231285a0c94 34 }
jksoft 0:5231285a0c94 35 }
jksoft 0:5231285a0c94 36 if( SW2 == 0 )
jksoft 0:5231285a0c94 37 {
jksoft 0:5231285a0c94 38 wave( 0.2 , 2000.0 , 0.2 );
jksoft 0:5231285a0c94 39 wave( 0.2 , 1000.0 , 0.2 );
jksoft 0:5231285a0c94 40 }
jksoft 0:5231285a0c94 41 }
jksoft 0:5231285a0c94 42 }