57 lines
2.2 KiB
C++
57 lines
2.2 KiB
C++
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/*
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.cpp - Brightness Sensor Library
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Copyright (c) 2020-2021, Stefan Brand
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Arduino.h>
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#include "Brightness.h"
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// Constructor - Inititalize Hardware UART
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Brightness::Brightness(uint8_t a, uint8_t c) {
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this->anode = a;
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this->cathode = c;
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}
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uint8_t Brightness::getSensorData(char *payload, uint8_t startbyte) {
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uint16_t counter;
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pinMode(this->anode, OUTPUT);
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digitalWrite(this->anode, LOW);
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pinMode(this->cathode, OUTPUT);
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digitalWrite(this->cathode, HIGH);
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delayMicroseconds(4);
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pinMode(this->cathode, INPUT);
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digitalWrite(this->cathode, LOW);
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for ( counter = 0; counter < 65000; counter++) {
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if (digitalRead(this->cathode)==0) break;
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delayMicroseconds(5);
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}
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uint16ToPayload(65000-counter, payload, startbyte);
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return startbyte+2;
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}
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