Diff: main.cpp

Revision:

1:6f970f5a63d4

Parent:

0:3009c861d060

--- a/main.cpp	Mon Oct 20 13:14:18 2014 +0000
+++ b/main.cpp	Mon Oct 20 21:43:47 2014 +0000
@@ -3,18 +3,42 @@
 
 DigitalOut read_led(LED1);
 DigitalOut auto_led(LED2);
-DigitalOut interrupt_led(LED3);
-AT42QT1010 touch_sensor(p21,p23);
+DigitalOut i_led1(LED3);
+DigitalOut i_led2(LED4);
+AT42QT1010 touch_sensor(p23,p21);
+
+//Global variables to control interrupt timing
+int _old_sig=0;
+int _new_sig=0;
 
-void interrupt(){
-    interrupt_led=!interrupt_led;
+void rise_interrupt(){
+    static int count=0;
+    //Only execute on true rise
+    if(_old_sig==0 && _new_sig==1){
+        _old_sig=1;
+        //Use LED3 and LED4 to display count
+        count++;
+        i_led2=(count)%2;
+        i_led1=(count>>1)%2;
+    }  
+}
+void fall_interrupt(){
+    //Trigger indication of true fall
+    if(_new_sig==0) _old_sig=0;
 }
 
 int main() {
-    touch_sensor.attach(&interrupt);
+    //Set up the rising and falling edge interrupts
+    touch_sensor.attach_rise(&rise_interrupt);
+    touch_sensor.attach_fall(&fall_interrupt);
     while(1) {
+        //Declare the current status of the sensor,
+        //and give a window of time to process.
+        _new_sig = touch_sensor;
+        wait(.1);
+        //Member function demonstration
         read_led = touch_sensor.read();
         auto_led = touch_sensor;
-        touch_sensor.write(auto_led);
+        touch_sensor.write(!auto_led);
     }
 }