Diff: main.cpp

Revision:

5:af96df45a447

Parent:

4:1b63302b4008

Child:

6:0ef5a242ed00

--- a/main.cpp	Tue Apr 28 06:25:30 2015 +0000
+++ b/main.cpp	Wed Apr 29 21:58:04 2015 +0000
@@ -1,29 +1,34 @@
 #include "mbed.h"
-
 #define BAUD_RATE 9600 //default baud rate
-DigitalOut led(LED1); //P0_18 in NRF51822_MKIT
-DigitalIn reed_speed(p1, PullDown); //P0_01 in NRF51822_MKIT
+
+InterruptIn button(p1);
+DigitalOut led(LED1);
+Timer debounce;                //define debundance timer
+Timer timer1;                   //define timer variable
 unsigned int counter=0;
+unsigned int revMin=0;
+
+void toggle(void);          //function prototype
 
 int main() {
     //Configure boud rate 
     Serial s(USBTX, USBRX); //default for nrf51 is p0.09 p0.11
     s.baud(BAUD_RATE);
-    counter = 0;
-    
-    while(1) {                          
-        if (reed_speed) {
-            counter = counter + 1;
-            led = 1; // LED is ON
-            printf("number of revs: %i\n",counter);
-            while(reed_speed){ //display dots to check if counting works
-            printf(".");
-            }        
-            
-        }
-        else {
-            led = 0; //LED is OFF
-        }
-        wait(0.100); // 100 ms                         
-    }
+   
+    timer1.start();
+    debounce.start();
+    button.rise(&toggle);   // attach the addressof the toggle function to the rising edge
 }
+
+void toggle() {
+if (debounce.read_ms()>100) //only allow toggle if debounce timer has passed 200ms
+    led=!led;        
+ 
+    debounce.reset();       //restart timer when toggle is performed
+    revMin = (60*1000)/timer1.read_ms();
+    timer1.reset();    
+    counter = counter + 1;
+    printf("id %i",counter);
+    printf(" - revs/min: %i\n",revMin);
+    //printf("switch \n\r");    
+}