![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
This is a very simple guide, reviewing the steps required to get Blinky working on an Mbed OS platform.
Dependencies: mbed Adafruit_GFX
ultrasonic.h
- Committer:
- ParkChunMyong
- Date:
- 2019-06-13
- Revision:
- 96:7465ab270e7a
- Parent:
- 95:250afd53b710
File content as of revision 96:7465ab270e7a:
#ifndef MBED_ULTRASONIC_H #define MBED_ULTRASONIC_H #include "mbed.h" class Ultrasonic { public: /**iniates the class with the specified trigger pin, echo pin, update speed and timeout**/ Ultrasonic(PinName trigPin, PinName echoPin, float timeout = 0.1, bool mode = false, float time = 0.1); ~Ultrasonic(); // generate 10 us trig signal void trig(void); // return distance in cm and return -1 in case of failure int getDistance(void); void calculateDistance(void); // return the echo pulse duration in us and return -1 in case of failure int getPulseDuration(void); // get a status whether measurement is done or not int getStatus(void); // clear the status that represents measurement-done. void clearStatus(void); // stop measuring void pauseMeasure(void); void setMode(bool mode); void printDistance(float interval); private: DigitalOut _trig; InterruptIn _echo; Timer _timer; Timeout _timeout; Ticker _t; float _toVal; // timeout value in sec, or retriig time in sec if repeat == true float _repeatD; bool _repeat; int _distance; int _pulseDuration; int _start; int _end; int _break; void _startT(void); void _endT(void); void _timeout_cb(void); int _done; // end of measure RawSerial _pc; }; #endif /* ifndef MBED_ULTRASONIC_H */