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.
Revision 10:1ade8e824939, committed 2015-05-18
- Comitter:
- huliyang
- Date:
- Mon May 18 13:28:03 2015 +0000
- Parent:
- 9:b40252f5fee7
- Commit message:
- Debouncer: uint16_t _levels is enough for anyone; private Ticker.
Changed in this revision
| Pulsator.cpp | Show annotated file Show diff for this revision Revisions of this file |
| Pulsator.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/Pulsator.cpp Tue Apr 28 15:42:25 2015 +0000
+++ b/Pulsator.cpp Mon May 18 13:28:03 2015 +0000
@@ -132,7 +132,7 @@
}
//! Set the number (>= 2) of distinct brightness levels.
-Pulsator& Pulsator::levels(int number)
+Pulsator& Pulsator::levels(uint16_t number)
{
_levels = number;
reload();
--- a/Pulsator.h Tue Apr 28 15:42:25 2015 +0000
+++ b/Pulsator.h Mon May 18 13:28:03 2015 +0000
@@ -23,7 +23,7 @@
#include <mbed.h>
#include <PwmOut.h>
-class Pulsator : Ticker
+class Pulsator : private Ticker
{
private:
PwmOut out;
@@ -34,7 +34,7 @@
float (*_fun)(float phase);
float _gamma;
float _period;
- int _levels;
+ uint16_t _levels;
void disable(void);
void enable(void);
@@ -49,6 +49,6 @@
Pulsator& active_high(bool high = false);
Pulsator& fun(float (*fp)(float phase) = NULL);
Pulsator& gamma(float power = 2.2f);
- Pulsator& levels(int number = 128);
+ Pulsator& levels(uint16_t number = 128);
Pulsator& period(float seconds = 1.0f);
};