Eduardo Avelar / LibThreadProcess

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Dependents:   LedsThreading

Fork of BlinkLed by Satoshi Togawa

Files at this revision

API Documentation at this revision

Revision 1:54071e781f77, committed 2012-09-01

Comitter:
togayan
Date:
Sat Sep 01 11:08:44 2012 +0000
Parent:
0:a55a3351317d
Child:
2:1d0c09c1a8b4
Commit message:
Use signal to stop blinking

Changed in this revision

BlinkLed.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/BlinkLed.cpp	Sat Sep 01 04:02:02 2012 +0000
+++ b/BlinkLed.cpp	Sat Sep 01 11:08:44 2012 +0000
@@ -1,10 +1,10 @@
 #include "BlinkLed.h"
-    
+
 BlinkLed::BlinkLed(PinName pin, float dutyChangeStep) :
-led(pin),
-dutyChangeStep(dutyChangeStep),
-pause(true),
-thread(0)
+    led(pin),
+    dutyChangeStep(dutyChangeStep),
+    pause(true),
+    thread(0)
 {
 }
 
@@ -15,10 +15,11 @@
 void BlinkLed::startBlink()
 {
     pause = false;
-    if(thread == 0)
+    if(!thread)
     {
         thread = new Thread(blink, this, osPriorityNormal, 128, NULL);
     }
+    thread->signal_set(1);
 }
 
 void BlinkLed::finishBlink()
@@ -29,20 +30,18 @@
 void BlinkLed::blink(void const *argument)
 {
     BlinkLed* self = (BlinkLed*)argument;
-    
+
     bool sign = false;
-    while (1)
+    while(1)
     {
         if(self->pause)
         {
             self->led = 0.0F;
+            Thread::signal_wait(1);
         }
-        else
-        {
-            float brightness = self->led;
-            sign = (brightness <= 0.0F) ? true : (1.0F <= brightness) ? false : sign;
-            self->led = sign ? brightness + self->dutyChangeStep : brightness - self->dutyChangeStep;
-        }
+        float brightness = self->led;
+        sign = (brightness <= 0.0F) ? true : (1.0F <= brightness) ? false : sign;
+        self->led = sign ? brightness + self->dutyChangeStep : brightness - self->dutyChangeStep;
         Thread::wait(20);
     }
 }