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This module implements support for the DFRobot EC (Electrical Conductivity) meter. It relies on the use of the DS18B20 UPM C module for temperature gathering. It has a pretty complicated calibration procedure which is somewhat documented on the DFRobot wiki. Functions have been added to support changing the various coefficients as desired. Signed-off-by: Jon Trulson <jtrulson@ics.com>
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef UPM_EC_H_
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#define UPM_EC_H_
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#include "upm_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* EC (Electrical Conductivity) function table */
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typedef struct _upm_ec_ft
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{
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/* Set sensor offset */
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upm_result_t (*upm_ec_set_offset) (const void* dev, float offset);
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/* Set sensor scale */
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upm_result_t (*upm_ec_set_scale) (const void* dev, float scale);
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/* Read sensor value */
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upm_result_t (*upm_ec_get_value) (const void* dev, float *value);
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} upm_ec_ft;
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#ifdef __cplusplus
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}
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#endif
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#endif /* UPM_EC_H_ */
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