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66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/*
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* Copyright (C) 2016 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup drivers_bh1750fvi
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* @{
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*
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* @file
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* @brief Command definition for the BH1750FVI light sensor
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*
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* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
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*/
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#ifndef BH1750FVI_INTERNAL_H
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#define BH1750FVI_INTERNAL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Result divisor (1.2 times 65535)
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*
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* The 16-bit RAW results have to be divided by 1.2. We do this by using fixed
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* floating point arithmetic by multiplying divisor and RAW value by 65535 (
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* uint16_t max).
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*/
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#define RES_DIV (78642)
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/**
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* @name Opcodes
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* @{
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*/
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#define OP_POWER_DOWN (0x00)
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#define OP_POWER_ON (0x01)
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#define OP_RESET (0x03)
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#define OP_CONT_HRES1 (0x10)
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#define OP_CONT_HRES2 (0x11)
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#define OP_CONT_LRES (0x13)
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#define OP_SINGLE_HRES1 (0x20)
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#define OP_SINGLE_HRES2 (0x21)
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#define OP_SINGLE_LRES (0x23)
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#define OP_CHANGE_TIME_H_MASK (0x40)
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#define OP_CHANGE_TIME_L_MASK (0x60)
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/** @} */
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/**
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* @name Measurement delays (in us)
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* @{
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*/
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#define DELAY_HMODE (120000) /**< typ. 120ms in H-mode */
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#define DELAY_LMODE (16000) /**< typ. 16ms in L-mode */
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* BH1750FVI_INTERNAL_H */
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/** @} */
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