Junichi Katsu
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。
Revision 0:5231285a0c94, committed 2014-05-12
- Comitter:
- jksoft
- Date:
- Mon May 12 13:52:38 2014 +0000
- Commit message:
- First edition
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon May 12 13:52:38 2014 +0000
@@ -0,0 +1,42 @@
+#include "mbed.h"
+
+AnalogOut DACout(p18);
+DigitalOut AMPEnable(p12);
+DigitalIn SW1(p25);
+DigitalIn SW2(p26);
+
+void wave(float volume , float fq , float time)
+{
+ float w_time = 1.0 / fq;
+
+ AMPEnable = 0;
+ for (float i=0; i<time / w_time; i++) {
+ DACout = volume;
+ wait(w_time/2);
+ DACout = 0.0;
+ wait(w_time/2);
+ }
+ AMPEnable = 1;
+
+}
+
+int main() {
+ SW1.mode(PullUp);
+ SW2.mode(PullUp);
+
+ while(1)
+ {
+ if( SW1 == 0 )
+ {
+ for( int i = 0 ; i < 10 ; i++ )
+ {
+ wave( 0.2 , i * 500.0 , 0.2 );
+ }
+ }
+ if( SW2 == 0 )
+ {
+ wave( 0.2 , 2000.0 , 0.2 );
+ wave( 0.2 , 1000.0 , 0.2 );
+ }
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon May 12 13:52:38 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/8a40adfe8776 \ No newline at end of file