72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/*
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* Authors: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2016 Intel Corporation.
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*
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* The MIT License
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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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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#define BH1750_DEFAULT_I2C_BUS 0
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#define BH1750_DEFAULT_I2C_ADDR 0x23
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// BH1750 commands
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#define BH1750_CMD_POWER_DOWN 0x00
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#define BH1750_CMD_POWER_UP 0x01
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#define BH1750_CMD_RESET 0x07
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// continuous modes
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#define BH1750_CMD_CONT_H_RES_MODE1 0x10 // 1 lx resolution
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#define BH1750_CMD_CONT_H_RES_MODE2 0x11 // .5 lx resolution
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#define BH1750_CMD_CONT_L_RES_MODE 0x13 // 4 lx resolution
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// one-time modes
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#define BH1750_CMD_ONETIME_H_RES_MODE1 0x20
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#define BH1750_CMD_ONETIME_H_RES_MODE2 0x21
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#define BH1750_CMD_ONETIME_L_RES_MODE 0x23
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// max measurement time in ms (for H modes)
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#define BH1750_MAX_MEAS_TIME_H 180
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// max measurement time in ms (for L modes)
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#define BH1750_MAX_MEAS_TIME_L 30
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// an enum for the operating mode to pass to init
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typedef enum {
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BH1750_OPMODE_H1_CONT, // continuous 1 lx high resolution
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BH1750_OPMODE_H2_CONT, // continuous .5 lx high resolution
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BH1750_OPMODE_L_CONT, // continuous 4 lx low resolution
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BH1750_OPMODE_H1_ONCE, // onetime 1 lx high resolution
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BH1750_OPMODE_H2_ONCE, // onetime .5 lx high resolution
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BH1750_OPMODE_L_ONCE, // onetime 4 lx low resolution
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} BH1750_OPMODES_T;
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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