Diff: main.cpp

Revision:

7:725b3bc34e7e

Parent:

6:e3ed48abbd53

Child:

8:ce5b480a2646

--- a/main.cpp	Fri Jul 22 11:44:22 2016 +0000
+++ b/main.cpp	Fri Jul 22 13:26:16 2016 +0000
@@ -4,6 +4,8 @@
 PwmOut mypwm(PC_8);
 DigitalIn sw(USER_BUTTON);
 
+#define sound_duty 0.1
+
 bool flip_flag;
 
 void flip()
@@ -26,9 +28,28 @@
 
         if(flip_flag == 1) {
 
+            //のこぎり波
             if(sw == 0) data = ft;
-            else data = sin(6.28 * ft) + 1;
-          
+            
+            //のこぎり波、下り
+            //else data = 1 - ft;
+            
+            //正弦波
+            //else data = sin(6.28 * ft) + 1;
+            //三角波
+            
+            else {
+                if(ft < sound_duty)    data = ft * (1 / sound_duty);
+                else    data = (1 / (1 - sound_duty)) * (1 - ft);
+            }
+            
+            //矩形波
+            /*
+            else{
+                if(ft < sound_duty)    data = 1;//thをいじればduty変わりそう
+                else data = 0;
+                }
+            */
             mypwm.write( data / 20 );
 
             ft += late * freq_out;