Eduardo Avelar / LibThreadProcess

Library thread Blink Led or other processes use RTOS

Dependents:   LedsThreading

Fork of BlinkLed by Satoshi Togawa

Example

https://developer.mbed.org/users/AVELARDEV/code/LedsThreading/

BlinkLed.cpp@0:a55a3351317d, 2012-09-01 (annotated)

Committer:
togayan
Date:
Sat Sep 01 04:02:02 2012 +0000
Revision:
0:a55a3351317d
Child:
1:54071e781f77
1st revision of BlinkLed

Who changed what in which revision?

UserRevisionLine numberNew contents of line
togayan 0:a55a3351317d 1 #include "BlinkLed.h"
togayan 0:a55a3351317d 2
togayan 0:a55a3351317d 3 BlinkLed::BlinkLed(PinName pin, float dutyChangeStep) :
togayan 0:a55a3351317d 4 led(pin),
togayan 0:a55a3351317d 5 dutyChangeStep(dutyChangeStep),
togayan 0:a55a3351317d 6 pause(true),
togayan 0:a55a3351317d 7 thread(0)
togayan 0:a55a3351317d 8 {
togayan 0:a55a3351317d 9 }
togayan 0:a55a3351317d 10
togayan 0:a55a3351317d 11 BlinkLed::~BlinkLed()
togayan 0:a55a3351317d 12 {
togayan 0:a55a3351317d 13 }
togayan 0:a55a3351317d 14
togayan 0:a55a3351317d 15 void BlinkLed::startBlink()
togayan 0:a55a3351317d 16 {
togayan 0:a55a3351317d 17 pause = false;
togayan 0:a55a3351317d 18 if(thread == 0)
togayan 0:a55a3351317d 19 {
togayan 0:a55a3351317d 20 thread = new Thread(blink, this, osPriorityNormal, 128, NULL);
togayan 0:a55a3351317d 21 }
togayan 0:a55a3351317d 22 }
togayan 0:a55a3351317d 23
togayan 0:a55a3351317d 24 void BlinkLed::finishBlink()
togayan 0:a55a3351317d 25 {
togayan 0:a55a3351317d 26 pause = true;
togayan 0:a55a3351317d 27 }
togayan 0:a55a3351317d 28
togayan 0:a55a3351317d 29 void BlinkLed::blink(void const *argument)
togayan 0:a55a3351317d 30 {
togayan 0:a55a3351317d 31 BlinkLed* self = (BlinkLed*)argument;
togayan 0:a55a3351317d 32
togayan 0:a55a3351317d 33 bool sign = false;
togayan 0:a55a3351317d 34 while (1)
togayan 0:a55a3351317d 35 {
togayan 0:a55a3351317d 36 if(self->pause)
togayan 0:a55a3351317d 37 {
togayan 0:a55a3351317d 38 self->led = 0.0F;
togayan 0:a55a3351317d 39 }
togayan 0:a55a3351317d 40 else
togayan 0:a55a3351317d 41 {
togayan 0:a55a3351317d 42 float brightness = self->led;
togayan 0:a55a3351317d 43 sign = (brightness <= 0.0F) ? true : (1.0F <= brightness) ? false : sign;
togayan 0:a55a3351317d 44 self->led = sign ? brightness + self->dutyChangeStep : brightness - self->dutyChangeStep;
togayan 0:a55a3351317d 45 }
togayan 0:a55a3351317d 46 Thread::wait(20);
togayan 0:a55a3351317d 47 }
togayan 0:a55a3351317d 48 }