![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Proof of concept for distance and temperature monitoring
Dependencies: mbed mbedConnectorInterface mbedEndpointNetwork
Diff: hcsr04.h
- Revision:
- 8:c69fe28366d8
- Parent:
- 0:cb422b231ea5
- Child:
- 10:338191178cbf
--- a/hcsr04.h Wed May 06 02:53:36 2015 +0000 +++ b/hcsr04.h Wed May 06 04:02:08 2015 +0000 @@ -29,9 +29,13 @@ /** HCSR04 Class(es) */ +// TODO(CJF): steal clever logic from https://code.google.com/p/arduino-new-ping/ ? + class HCSR04 { public: + static const double kMicrosecondsToCentimeters = 343.0 / 20000; + /** Create a HCSR04 object connected to the specified pin * @param pin i/o pin to connect to */ @@ -41,7 +45,7 @@ /** Return the distance from obstacle in cm * @param distance in cms and returns -1, in case of failure */ - unsigned int get_dist_cm(void); + double get_dist_cm(void); /** Return the pulse duration equal to sonic waves travelling to obstacle and back to receiver. * @param pulse duration in microseconds. */ @@ -62,7 +66,6 @@ DigitalOut trigger; InterruptIn echo; unsigned int pulsedur; - unsigned int distance; }; #endif \ No newline at end of file