Diff: PwmIn/PwmIn.cpp

Revision:

0:9cb9445a11f0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PwmIn/PwmIn.cpp	Wed Jul 17 15:58:25 2013 +0000
@@ -0,0 +1,57 @@
+/* mbed PwmIn Library
+ * Copyright (c) 2008-2010, sford
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+ 
+#include "PwmIn.h"
+
+PwmIn::PwmIn(PinName p) : _p(p) {
+    _p.mode(PullNone);
+    _p.rise(this, &PwmIn::rise);
+    _p.fall(this, &PwmIn::fall);
+    _period = 0.0;
+    _pulsewidth = 0.0;
+    _temp_pulsewidth = 0.0;
+    _t.start();
+}
+
+float PwmIn::period() {
+    return _period;
+}
+
+float PwmIn::pulsewidth() {
+    return _pulsewidth;
+}
+
+float PwmIn::dutycycle() {
+    if(_t.read_ms()<100){
+    return (_pulsewidth%_period) /((float) _period);}   
+    else return 0;
+}
+
+void PwmIn::rise() {
+    _period = _t.read_us();
+    _t.reset();
+}
+
+void PwmIn::fall() {
+    _temp_pulsewidth = _t.read_us();
+    if(_temp_pulsewidth != 0) _pulsewidth = _temp_pulsewidth;
+}