Diff: Led.cpp

Revision:

0:77714f74d105

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Led.cpp	Mon May 06 08:23:41 2013 +0000
@@ -0,0 +1,85 @@
+#include "Led.h"
+
+/********************************************************************************************************
+                                         public methods
+ ********************************************************************************************************/
+
+/* Create a Led interface */
+Led::Led(PinName pin) : _pin(pin) {
+    // default the output to 0
+    _pin = 0;
+    // delay to flip pin (flash led)
+    _flashDelay = 0.2;
+}
+
+/* Destructor */
+Led::~Led()
+{
+}
+
+/* put on LED */
+void Led::on(void) {
+    // stop flash LED if forgot
+    this->stopFlash();
+    _pin = 1;
+}
+
+/* put off LED */
+void Led::off(void) {
+    // stop flash LED
+    this->stopFlash();
+    _pin = 0;
+}
+
+/* launch LED flash */
+void Led::flash(void) {
+    // stop flash LED if forgot
+    this->stopFlash();
+    // Attach a function to be called by the Ticker, specifiying the interval delay in seconds.
+    // attach flipPin : change pin status each _flashDelay seconds (flash led)
+    _ticker.attach(this, &Led::flipPin, _flashDelay);
+}
+
+/* get pin status 
+ * 
+ * @return  _pin
+ */
+int Led::read(void) {
+    return _pin;
+}
+
+/* get flash delay value 
+ * 
+ * @return _flashDelay
+ */
+float Led::getFlashDelay(void) const {
+    return _flashDelay;
+}
+
+/* change flash delay value to delay 
+ * 
+ * @param delay     new delay to flash LED
+ */
+void Led::setFlashDelay(float delay) {
+    _flashDelay = delay;
+}
+
+/********************************************************************************************************
+                                         private methods
+ ********************************************************************************************************/
+
+// flipPin method call by ticker
+// flip pin status
+// use by flash()
+void Led::flipPin(void) {
+    // flash LED
+    _pin = !_pin;
+}
+
+// detach method flipPin
+// use by on(), off() and flash()
+void Led::stopFlash(void) {
+    // Detach the function
+    _ticker.detach();
+    _pin = 0;
+}
\ No newline at end of file