mirror of
https://github.com/RobTillaart/Arduino.git
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167 lines
3.5 KiB
C++
167 lines
3.5 KiB
C++
//
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// FILE: radar.cpp
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.6
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// PURPOSE: Arduino library for a pan tilt radar.
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// URL: https://github.com/RobTillaart/RADAR
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//
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// HISTORY
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// 0.1.00 2013-09-30 (?) outline
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// 0.1.01 2015-03-06 updated some code, still not functional
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// 0.1.2 2017-07-16 refactor & review
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// 0.1.3 2020-07-06 refactor, clean up and some documentation
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// 0.1.4 2021-01-07 Arduino-CI, unit-test
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// 0.1.5 2021-05-27 fix Arduino-lint
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// 0.1.6 2021-12-27 Update library.json, readme, license, minor edits
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#include "radar.h"
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////////////////////////////////////////////////////////////
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//
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// CONSTRUCTOR
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//
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RADAR::RADAR(const uint8_t pinPan, const uint8_t pinTilt)
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{
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_pinPan = pinPan;
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_pinTilt = pinTilt;
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_homePan = 0;
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_homeTilt = 0;
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_pan = _prevPan = 0;
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_tilt = _prevTilt = 0;
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_panPerSecond = 15;
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_tiltPerSecond = 15;
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_lastPanTime = _lastTiltTime = millis();
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for (uint8_t i = 0; i < RADAR_POSITIONS; i++)
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{
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_panArray[i] = 0;
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_tiltArray[i] = 0;
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}
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}
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// PUBLIC
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void RADAR::gotoPan(const int16_t pan)
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{
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if (pan == _pan) return;
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_prevPan = getPan();
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_pan = pan;
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analogWrite(_pinPan, _pan);
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_lastPanTime = millis();
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}
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int16_t RADAR::getPan()
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{
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// ESTIMATE current position on time it takes to go from previous to new
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if (_pan == _prevPan) return _pan;
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// if (enough time passed to move to new position) return new position
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uint32_t duration = millis() - _lastPanTime;
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uint32_t movement = round(duration * _panPerSecond * 0.001);
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if ( abs(_pan - _prevPan) <= movement) return _pan;
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// else estimate PAN by linear interpolation
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if (_pan > _prevPan) return _prevPan + movement;
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return _prevPan - movement;
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}
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void RADAR::gotoTilt(const int16_t tilt)
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{
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if (tilt == _tilt) return;
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_prevTilt = getTilt();
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_tilt = tilt;
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analogWrite(_pinTilt, _tilt); // 0..180
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_lastTiltTime = millis();
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}
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int16_t RADAR::getTilt()
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{
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// ESTIMATE current position on time it takes to go from previous to new
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if (_tilt == _prevTilt) return _tilt;
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// if (enough time passed to move to new position) return new position
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uint32_t duration = millis() - _lastTiltTime;
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uint32_t movement = round(duration * _tiltPerSecond * 0.001);
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if (abs(_tilt - _prevTilt) <= movement) return _tilt;
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// estimate TILT by linear interpolation
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if (_tilt > _prevTilt) return _prevTilt + movement;
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return _prevTilt - movement;
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}
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void RADAR::gotoPanTilt(const int16_t pan, const int16_t tilt)
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{
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gotoPan(pan);
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gotoTilt(tilt);
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}
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bool RADAR::setPosition(const uint8_t index, const int16_t pan, const int16_t tilt)
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{
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if (index >= RADAR_POSITIONS) return false;
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_panArray[index] = pan;
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_tiltArray[index] = tilt;
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return true;
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}
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bool RADAR::getPosition(const uint8_t index, int16_t & pan, int16_t & tilt)
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{
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if (index >= RADAR_POSITIONS) return false;
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pan = _panArray[index];
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tilt = _tiltArray[index];
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return true;
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}
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bool RADAR::gotoPosition(const uint8_t index)
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{
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if (index >= RADAR_POSITIONS) return false;
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gotoPan(_panArray[index]);
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gotoTilt(_tiltArray[index]);
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return true;
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}
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void RADAR::setHomePosition(const int16_t pan, const int16_t tilt)
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{
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_homePan = pan;
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_homeTilt = tilt;
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}
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void RADAR::gotoHomePosition()
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{
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gotoPan(_homePan);
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gotoTilt(_homeTilt);
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}
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uint32_t RADAR::ping()
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{
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// TODO ping code here - playground or teckel's improved ping)))
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return 0;
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}
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uint32_t RADAR::ping(const int16_t pan, const int16_t tilt)
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{
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gotoPan(pan);
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gotoTilt(tilt);
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while (isMoving());
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return ping();
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}
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// PRIVATE
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// TODO distil private parts (getPan and getTilt share a lot
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// -- END OF FILE --
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