Data.cpp

00001 #include "mbed.h"
00002 #include "Data.h"
00003 #define Period 1 //5000ms
00004 #define PPR 1
00005 #define periphery 2.233168 //periphery of the wheel, in this example a 28" wheel.
00006 
00007 
00008 
00009 int count;
00010 time_t StartTime;
00011 double distance;
00012 double lastDistance;
00013 int lastCount;
00014 
00015 void interval(void){
00016     lastDistance = count * periphery / PPR;
00017     distance += lastDistance;
00018     lastCount = count;
00019     count = 0;
00020     }
00021     
00022 void pressed(void){
00023     count++;
00024 }
00025     
00026 Data::Data(PinName pin) : button(pin){
00027     StartTime = time(NULL);
00028     count = 0;
00029     distance = 0;
00030     tick.attach(interval,Period);
00031     button.fall(pressed);
00032     }
00033     
00034 double Data::getDistance(void){
00035     return distance;
00036     }
00037 
00038 int Data::getTime(void){
00039     return time(NULL) - StartTime;
00040     }
00041     
00042 double Data::getSpeed(void){
00043     return lastDistance/Period * 3.6;
00044     }
00045     
00046 double Data::getAverage(void){
00047     return distance/(time(NULL) - StartTime) * 3.6;
00048     }
00049     
00050 int Data::getLastCount(void){
00051     return lastCount;
00052    }