Revision 0:f1e5739acc27, committed 2015-08-23

Comitter:

inst

Date:

Sun Aug 23 15:17:49 2015 +0000

Commit message:

first

Changed in this revision

diff -r 000000000000 -r f1e5739acc27 PWMOut.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PWMOut.cpp	Sun Aug 23 15:17:49 2015 +0000
@@ -0,0 +1,27 @@
+#include "mbed.h"
+#include "PWMOut.h"
+
+PWMOut::PWMOut( PinName p ){
+    mPWM    = new PwmOut( p );
+    mTimer  = new Timer;
+    mTimer->start();
+    mPeriod_us  = 20 * 1000;
+    mNextDuty   = 0.0f;
+}
+
+void PWMOut::setDuty( float duty ){
+    mNextDuty = duty;
+    
+    if ( mTimer->read_us() > mPeriod_us ){
+        mPWM->write( mNextDuty );
+        mTimer->reset();
+    }
+}
+
+void PWMOut::setPeriod_sec( float period ){
+    setPeriod_us( static_cast< uint32_t >( period * 1000.0f * 1000.0f ) );
+}
+
+void PWMOut::setPeriod_us( uint32_t period ){
+    mPWM->period_us( period );
+}

diff -r 000000000000 -r f1e5739acc27 PWMOut.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PWMOut.h	Sun Aug 23 15:17:49 2015 +0000
@@ -0,0 +1,20 @@
+#ifndef INCLUDED_PWM_OUT_H
+#define INCLUDED_PWM_OUT_H
+
+#include "mbed.h"
+
+class PWMOut{
+public:
+    PWMOut( PinName p );
+    void setDuty( float duty );
+    void setPeriod_sec( float period );
+    void setPeriod_us( uint32_t period );
+    
+private:
+    PwmOut* mPWM;
+    uint32_t mPeriod_us;
+    Timer* mTimer;
+    float mNextDuty;
+};
+
+#endif