bh1750fvi_internal.h
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/*
* Copyright (C) 2016 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup drivers_bh1750fvi
* @{
*
* @file
* @brief Command definition for the BH1750FVI light sensor
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*/
#ifndef BH1750FVI_INTERNAL_H
#define BH1750FVI_INTERNAL_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Result divisor (1.2 times 65535)
*
* The 16-bit RAW results have to be divided by 1.2. We do this by using fixed
* floating point arithmetics by multiplying divisor and RAW value by 65535 (
* uint16_t max).
*/
#define RES_DIV (78642)
/**
* @name Opcodes
* @{
*/
#define OP_POWER_DOWN (0x00)
#define OP_POWER_ON (0x01)
#define OP_RESET (0x03)
#define OP_CONT_HRES1 (0x10)
#define OP_CONT_HRES2 (0x11)
#define OP_CONT_LRES (0x13)
#define OP_SINGLE_HRES1 (0x20)
#define OP_SINGLE_HRES2 (0x21)
#define OP_SINGLE_LRES (0x23)
#define OP_CHANGE_TIME_H_MASK (0x40)
#define OP_CHANGE_TIME_L_MASK (0x60)
/** @} */
/**
* @name Measurement delays (in us)
* @{
*/
#define DELAY_HMODE (120000) /**< typ. 120ms in H-mode */
#define DELAY_LMODE (16000) /**< typ. 16ms in L-mode */
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* BH1750FVI_INTERNAL_H */
/** @} */