Diff: main.cpp

Revision:

2:d1d15e8c083f

Parent:

1:733a0de4d34c

Child:

3:0de69a4b8aac

diff -r 733a0de4d34c -r d1d15e8c083f main.cpp
--- a/main.cpp	Thu Aug 01 23:24:00 2013 +0000
+++ b/main.cpp	Wed Oct 16 06:21:06 2013 +0000
@@ -9,7 +9,9 @@
 DigitalIn up_button(p15);
 DigitalIn down_button(p16);
 DigitalOut redled(LED1);             //displays the metronome beat
-Ticker beat_rate;                   //define a Ticker, with name “beat_rate”
+Ticker beat_rate;  
+PwmOut spkr(p26);  
+               
 void beat(void);
 float period (1);              //metronome period in seconds, inital value 0.5
 int rate (60);                  //metronome rate, initial value 120
@@ -42,8 +44,34 @@
 
   void beat() {                         //this is the metronome beat
     beat_rate.attach(&beat, period);    //update beat rate at this moment
+
+    // speaker    
+    spkr.period(1.0/5000);
+    spkr=0.5;
+    
+    // led
     redled = 1;
     wait(.1);
+    
+    // turn off speaker and led
     redled = 0;
+    spkr = 0.0;
   }
 
+#ifdef spkr
+DigitalIn fire(p14);
+PwmOut spkr(p26);
+
+int main()
+{
+    while (1) {
+        for (float i=2000.0; i<10000.0; i+=100) {
+            spkr.period(1.0/i);
+            spkr=0.5;
+            wait(0.1);
+        }
+        spkr=0.0;
+        while(!fire) {}
+    }
+}
+#endif
\ No newline at end of file