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.h
- Revision:
- 0:dda7f6f55dc1
- Child:
- 1:bcddb9898625
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Pulsator.h Fri Apr 24 03:56:51 2015 +0000
@@ -0,0 +1,23 @@
+#include <mbed.h>
+#include <PwmOut.h>
+
+class Pulsator
+{
+private:
+ PwmOut out;
+ Ticker ticker;
+ float phase_2; // phase / 2
+
+ const float period;
+ const bool active_high;
+ const float gamma;
+ const int levels;
+
+ void step(void);
+ void enable(void);
+ void disable(void);
+
+public:
+ Pulsator(PinName pin = LED1, float period = 1.0, bool active_high = true, float gamma = 2.2, int levels = 32);
+ Pulsator& operator =(bool state);
+};