Revision 12:01c7edd1dd19, committed 2017-11-21

Comitter:

noutram

Date:

Tue Nov 21 13:50:04 2017 +0000

Parent:

11:67cb33bc247e

Commit message:

Now addressed the issue of switch bounce

Changed in this revision

--- a/main.cpp	Tue Nov 21 13:23:58 2017 +0000
+++ b/main.cpp	Tue Nov 21 13:50:04 2017 +0000
@@ -3,6 +3,7 @@
 #include "sample_hardware.hpp"
 #include "mbed_events.h"
 void buttonPressedISR();
+void buttonReleasedISR();
 void addSample(float t);
 void heartBeat();
  
@@ -17,6 +18,15 @@
 //Buffer
 float arrayOfTimes[10];
 
+//Set up rising edge detection
+void rising() {
+    btn.rise(buttonPressedISR);
+}
+//Set up falling edge detection
+void falling() {
+    btn.fall(buttonReleasedISR);
+}
+
 int main() {
     //Power on self test
     post();
@@ -41,7 +51,14 @@
 
 void buttonPressedISR() { 
     float t = tmr1.read();  //Immediately read time in seconds
-    mainQueue.call(addSample, t);  
+    btn.rise(NULL);         //Turn off interrupt
+    mainQueue.call(addSample, t);           //Add sample to buffer and print
+    mainQueue.call_in(200, falling);        //After 200ms, look for falling edge
+}
+
+void buttonReleasedISR() { 
+    btn.fall(NULL);                     //Turn off interrupt
+    mainQueue.call_in(200, rising);     //After 200ms, look for rising edge again
 }
 
 // Add sample to buffer
@@ -62,6 +79,7 @@
         printf("%5.1f ", delta);
     }
     printf("\n");
+    
 }
 
 //Flashing LED