Blinker.cpp

00001 #include "Blinker.h"
00002 #include "mbed.h"
00003 
00004 Blinker::Blinker(PinName pin):myled(pin) {
00005     myled = 0;
00006     i = 0;
00007     N = 0;
00008     period = 0;
00009 }
00010 
00011 void Blinker::blink(int n, float t) {
00012     finished = false;
00013     almostFinished = false;
00014     i = 0;
00015     if (i < n) {
00016         myled = 1;
00017         timeout.attach(this, &Blinker::turnLedOff, t/2);
00018         N = n;
00019         period = t;
00020         i++;
00021         if (i < N) {
00022             ticker.attach(this, &Blinker::turnLedOn, t);
00023         } else {
00024             almostFinished = true;
00025         }
00026     } else {
00027         finished = true;
00028     }
00029 }
00030 
00031 void Blinker::turnLedOff() {
00032     myled = 0;
00033     if (almostFinished) {
00034         timeout.attach(this, &Blinker::done, period/2);
00035     }
00036 }
00037 
00038 void Blinker::turnLedOn() {
00039     myled = 1;
00040     timeout.attach(this, &Blinker::turnLedOff, period/2);
00041     if (++i >= N) {
00042         ticker.detach();
00043         almostFinished = true;
00044     }
00045 }
00046 void Blinker::done() {
00047     finished = true;
00048 }
00049 
00050 bool Blinker::isFinished() {
00051     return finished;
00052 }