Liyang HU
Use the hardware PwmOut to pulsate an LED (or something else), with selectable active high/low, customisable intensity function, gamma correction, and number of brightness levels.
Diff: Pulsator.cpp
- Revision:
- 5:26cc18306d95
- Parent:
- 4:55b287904199
- Child:
- 6:5eeb1acc1c50
--- a/Pulsator.cpp Fri Apr 24 07:58:22 2015 +0000
+++ b/Pulsator.cpp Fri Apr 24 21:26:05 2015 +0000
@@ -58,6 +58,7 @@
void Pulsator::enable(void)
{
+ _enable = true;
out.period(1.0 / 1024.0);
phase_2 = 0.0;
step();
@@ -66,6 +67,7 @@
void Pulsator::disable(void)
{
+ _enable = false;
ticker.detach();
out = active_high ? 0.0 : 1.0;
}
@@ -93,6 +95,12 @@
*/
Pulsator& Pulsator::operator=(bool state)
{
- state ? enable() : disable();
+ if(state != _enable)
+ state ? enable() : disable();
return *this;
}
+
+Pulsator::operator bool(void)
+{
+ return _enable;
+}