Revision 0:b2ab9e77dd7e, committed 2017-05-26

Comitter:

jmambroi

Date:

Fri May 26 14:15:14 2017 +0000

Commit message:

Ok

Changed in this revision

diff -r 000000000000 -r b2ab9e77dd7e JMAPwmOut.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JMAPwmOut.cpp	Fri May 26 14:15:14 2017 +0000
@@ -0,0 +1,71 @@
+#include "mbed.h"
+#include "InterruptIn.h"
+#include "JMAPwmOut.hpp"
+
+JMAPwmOut::JMAPwmOut(PinName pin) : _outPin(pin) {  // Constructor definition. Assign _out
+
+    _interval = 0.1; // Default fequency
+    _width = 0;
+    start(); 
+}
+
+float JMAPwmOut::read() {
+    return _width / _interval;    
+}
+
+void JMAPwmOut::write(float duty) {
+    _width = _interval * duty;
+    if ( duty <= 0 ) _width =  0.0;
+    if ( duty > 1 )  _width =  _interval;
+}
+
+void JMAPwmOut::start() {
+    _ticker.attach(this,&JMAPwmOut::TickerInterrupt,_interval);
+}
+
+void JMAPwmOut::stop() {
+    _ticker.detach();
+    //wait(width);
+}
+
+void JMAPwmOut::period(float period) {
+    _interval = period;
+    start();
+}
+
+void JMAPwmOut::period_ms(int period) {
+    JMAPwmOut::period((float)period / 1000);
+    start();
+}
+
+void JMAPwmOut::period_us(int period) {
+    JMAPwmOut::period((float)period / 1000000);
+    start();
+}
+
+void JMAPwmOut::pulsewidth(float width) {
+   _width = width;
+   if ( _width < 0) _width = 0.0;
+   if ( _width > _interval) _width = _interval;
+}
+
+void JMAPwmOut::pulsewidth_ms(int width) {
+    JMAPwmOut::pulsewidth((float)width / 1000);
+}
+
+void JMAPwmOut::pulsewidth_us(int width) {
+    JMAPwmOut::pulsewidth((float)width / 1000000);
+}
+
+void JMAPwmOut::TickerInterrupt() {
+    _outPin = 0;
+    if ( _width <= 0 ) return;
+    _timeout.attach(this,&JMAPwmOut::end,_width);   
+}
+
+void JMAPwmOut::end() {  
+    _outPin = 1;
+//    _timeout.detach();
+}
+;
+

diff -r 000000000000 -r b2ab9e77dd7e JMAPwmOut.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JMAPwmOut.hpp	Fri May 26 14:15:14 2017 +0000
@@ -0,0 +1,45 @@
+#ifndef _JMAPWMOUT_HPP_
+#define _JMAPWMOUT_HPP_
+
+#define POSITIVE true
+#define NEGATIVE false
+
+#include "mbed.h"
+
+class JMAPwmOut {
+    public :
+        JMAPwmOut(PinName); 
+//        void attach_us(int);
+        void start();
+        void write(float);
+        float read();
+        void pulsewidth(float);
+        void pulsewidth_ms(int);
+        void pulsewidth_us(int);
+        void period(float);
+        void period_ms(int);
+        void period_us(int);
+        void stop();
+        operator float()  { 
+            if ( _width <= 0 ) return 0.0;
+            if ( _width > 1 )  return 1.0;
+            return _width / _interval;
+        }
+        JMAPwmOut& operator=(float duty)  {
+            _width = _interval * duty;
+            if ( duty <= 0 ) _width =  0.0;
+            if ( duty > 1 )  _width =  _interval;
+            return *this;
+        }
+    
+    private :
+        Timeout _timeout;
+        Ticker _ticker;
+        void TickerInterrupt();
+        void end();
+        DigitalOut _outPin;
+        float _width;
+        float _interval;
+                
+};
+#endif
\ No newline at end of file