Diff: main.cpp

Revision:

1:5bc3306dd478

Parent:

0:f3b9844205f2

diff -r f3b9844205f2 -r 5bc3306dd478 main.cpp
--- a/main.cpp	Wed May 31 12:15:01 2017 +0000
+++ b/main.cpp	Thu Jun 01 01:10:26 2017 +0000
@@ -1,38 +1,23 @@
 #include "mbed.h"
- 
-AnalogIn analog_value(PA_0);
+InterruptIn sensor(PA_0);
  
-DigitalOut led(LED1);
 Serial pc(USBTX,USBRX,115200);
+
 Timer t;
 
+void start() {
+    t.start();
+}
+
+void stop() {
+    t.stop();
+    pc.printf("%f seconds\n", t.read());
+    t.reset();
+}
+
 int main() {
     pc.format(8,SerialBase::None,1);
-    float meas;
-    led = 1;
-    pc.printf("\nAnalogIn example\n");
-    float max, min, mean;
-    max = analog_value.read()*3300;
-    min = max;
-    
-    
-    while(1) {
-        meas = analog_value.read(); // Converts and read the analog input value (value from 0.0 to 1.0)
-        meas = meas * 3300; // Change the value to be in the 0 to 3300 range
-        if (meas>max)
-            max = meas;
-        if (meas<min)
-            min = meas;
-        mean = (max + min)/2;
-        pc.printf("measure = %.0f mV, mean = %.0f mV\n", meas, mean);
-        if (meas < mean) { // If the value is greater than 2V then switch the LED on
-          t.start();
-          while(analog_value.read()*3300 < mean);
-          t.stop();
-          //if(t.read() > 0.00001)
-          pc.printf("The time taken was %f seconds\n", t.read());
-          wait(1);
-        }
-        t.reset();
-    }
+    sensor.fall(&start);    // voltage drops below 3.3v
+    sensor.rise(&stop);     // voltage rises above 3.3v
+    while(1);
 }