Karim Azzouz
Used to read incoming PWM signals from RC channels
Diff: PulseIn.h
- Revision:
- 0:1a57c7f88422
- Child:
- 1:eaf70ff4df07
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PulseIn.h Wed Dec 19 08:06:23 2012 +0000
@@ -0,0 +1,21 @@
+#ifndef RC_CHANNEL_H
+#define PULSEIN_H
+
+#include "mbed.h"
+
+class PulseIn
+{
+ public:
+ PulseIn(PinName p);
+ int read(); // read the last measured data
+
+ private:
+ InterruptIn _k; // interrupt on the pin to react when signal falls or rises
+ void rise(); // start the time measurement when signal rises
+ void fall(); // stop the time mesurement and save the value when signal falls
+ Timer t; // timer to measure the up time of the signal and if the signal timed out
+ int _duration; // last measurement data
+};
+
+#endif
+