69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
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/*
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SCD30.h - Sensirion SCD30 CO2-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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#ifndef SCD30_H
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#define SCD30_H
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#include "../../include/attsensor.h"
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// Sensor I2C Address
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#define SCD30_ADDR 0x61
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// Commands and Registers
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#define SCD30_CONT_MEASURE 0x0010
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#define SCD30_SET_INTERVAL 0x4600
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#define SCD30_DATA_READY 0x0202
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#define SCD30_GET_MEASURE 0x0300
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#define SCD30_AUTOCAL 0x5306
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#define SCD30_SET_RECALIB 0x5204
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#define SCD30_SET_TEMPOFFSET 0x5403
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#define SCD30_SET_ALTCOMP 0x5102
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#define SCD30_RESET 0xD304
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#define SCD30_STOP_MEAS 0x0104
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#define SCD30_GET_FW_VER 0xD100
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class SCD30 : public AttSensor {
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private:
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bool selfcalib = false;
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uint16_t interval = 2;
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void reset(void);
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void sendCmd(uint16_t cmd, uint16_t arg);
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void sendCmd(uint16_t cmd);
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void getBytes(uint16_t register, uint8_t bytes[], uint8_t len);
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uint8_t calcCrc(uint8_t bytes[], uint8_t len);
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float byteToFloat(uint8_t mmsb, uint8_t mlsb, uint8_t lmsb, uint8_t llsb);
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public:
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SCD30();
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SCD30(uint8_t interval, bool selfcalib);
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void initialize(void);
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uint8_t numBytes(void) {return 6;};
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uint8_t getSensorData(char *payload, uint8_t startbyte);
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void calibrate();
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};
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#endif
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