![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
02/07/15
Dependencies: mbed
Calculate.cpp@33:929f1755664b, 2015-07-08 (annotated)
- Committer:
- aidanPJG
- Date:
- Wed Jul 08 08:37:07 2015 +0000
- Revision:
- 33:929f1755664b
- Parent:
- 32:792c4239a738
- Child:
- 38:da262dc4f90a
added speed;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
aidanPJG | 22:34bc2f2f5b09 | 1 | #include "mbed.h" |
aidanPJG | 22:34bc2f2f5b09 | 2 | #include <time.h> |
aidanPJG | 22:34bc2f2f5b09 | 3 | #include <string> |
aidanPJG | 22:34bc2f2f5b09 | 4 | #include <iostream> |
aidanPJG | 33:929f1755664b | 5 | //#include "Distance.h" |
aidanPJG | 31:bea1117f14fb | 6 | |
aidanPJG | 19:a3edf2c547e1 | 7 | //mbed pins |
aidanPJG | 26:4289549b2d21 | 8 | extern Serial pc; //defines the communication between MBed and pc |
aidanPJG | 26:4289549b2d21 | 9 | int NoOfPins = 6; //for how many sensors there are |
aidanPJG | 31:bea1117f14fb | 10 | DigitalIn sensor[6] = {p5,p6,p7,p8,p9,p10} ; //array of sensors. |
aidanPJG | 31:bea1117f14fb | 11 | |
aidanPJG | 31:bea1117f14fb | 12 | |
aidanPJG | 19:a3edf2c547e1 | 13 | //c++ variables |
aidanPJG | 26:4289549b2d21 | 14 | time_t sensor_time ; //time at which sensor is broken |
aidanPJG | 32:792c4239a738 | 15 | int timeDiff; //time between 2 sensors - not used right now |
aidanPJG | 31:bea1117f14fb | 16 | int times[6]; //array the size of #pins |
aidanPJG | 33:929f1755664b | 17 | float speed; |
aidanPJG | 26:4289549b2d21 | 18 | |
aidanPJG | 33:929f1755664b | 19 | int calculate(float distance) |
aidanPJG | 22:34bc2f2f5b09 | 20 | { |
aidanPJG | 22:34bc2f2f5b09 | 21 | pc.printf("new program \n"); //alert user of initialisation |
aidanPJG | 22:34bc2f2f5b09 | 22 | |
aidanPJG | 30:ab3a436e8968 | 23 | int i = 0; |
aidanPJG | 30:ab3a436e8968 | 24 | while( i < 6) |
aidanPJG | 25:bab86a12e9ad | 25 | { |
aidanPJG | 30:ab3a436e8968 | 26 | while(!sensor[i]) |
aidanPJG | 22:34bc2f2f5b09 | 27 | { |
aidanPJG | 30:ab3a436e8968 | 28 | if(sensor[i + 1]) { |
aidanPJG | 30:ab3a436e8968 | 29 | sensor_time = time(NULL); |
aidanPJG | 30:ab3a436e8968 | 30 | i++; |
aidanPJG | 30:ab3a436e8968 | 31 | } //error checking incase next one is done |
aidanPJG | 22:34bc2f2f5b09 | 32 | } |
aidanPJG | 33:929f1755664b | 33 | sensor_time = time(NULL); //gets current time |
aidanPJG | 32:792c4239a738 | 34 | pc.printf(" %dth sensor: %d \t", i,sensor_time); |
aidanPJG | 33:929f1755664b | 35 | pc.printf(" distance is: %f \t", distance); |
aidanPJG | 31:bea1117f14fb | 36 | times[i] = sensor_time; //adds sensor times to array for logging. |
aidanPJG | 33:929f1755664b | 37 | if ( i > 0) { //to ensure it is not the first one |
aidanPJG | 33:929f1755664b | 38 | timeDiff = difftime(times[i], times[i-1]); //calculates the time difference |
aidanPJG | 33:929f1755664b | 39 | pc.printf(" timediff: %d \t", timeDiff); |
aidanPJG | 33:929f1755664b | 40 | speed = distance / timeDiff; |
aidanPJG | 33:929f1755664b | 41 | pc.printf(" speed : %f \t", speed); |
aidanPJG | 32:792c4239a738 | 42 | } |
aidanPJG | 30:ab3a436e8968 | 43 | i++; |
aidanPJG | 30:ab3a436e8968 | 44 | } |
aidanPJG | 32:792c4239a738 | 45 | pc.printf(" \n Calculate completed \n"); //alert to let user know it completed |
aidanPJG | 32:792c4239a738 | 46 | for (int i = 0; i < 5 ; i++) //printing module for array |
aidanPJG | 31:bea1117f14fb | 47 | { |
aidanPJG | 32:792c4239a738 | 48 | pc.printf(" times: %d \t", times[i]); |
aidanPJG | 31:bea1117f14fb | 49 | } |
aidanPJG | 25:bab86a12e9ad | 50 | |
aidanPJG | 22:34bc2f2f5b09 | 51 | } |
aidanPJG | 30:ab3a436e8968 | 52 | |
aidanPJG | 30:ab3a436e8968 | 53 |