103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
/****************************************************************************
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* include/nuttx/sensors/bh1750fvi.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_SENSORS_BH1750FVI_H
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#define __INCLUDE_NUTTX_SENSORS_BH1750FVI_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <nuttx/irq.h>
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#include <nuttx/sensors/ioctl.h>
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#if defined(CONFIG_SENSORS_BH1750FVI)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Device I2C Address */
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#define BH1750FVI_I2C_ADDR 0x23
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/* Instruction Set Architecture */
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#define BH1750FVI_POWERDOWN 0x00
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#define BH1750FVI_POWERON 0x01
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#define BH1750FVI_RESET 0x07
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#define BH1750FVI_CONTINUOUS_HRM 0x10 /* Continuously H-Resolution Mode */
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#define BH1750FVI_CONTINUOUS_HRM2 0x11 /* Continuously H-Resolution Mode 2 */
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#define BH1750FVI_CONTINUOUS_LRM 0x12 /* Continuously L-Resolution Mode */
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#define BH1750FVI_ONETIME_HRM 0x20 /* One Time H-Resolution Mode */
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#define BH1750FVI_ONETIME_HRM2 0x21 /* One Time H-Resolution Mode 2 */
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#define BH1750FVI_ONETIME_LRM 0x23 /* One Time L-Resolution Mode */
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#define BH1750FVI_MEASURE_TIMEH 0x40 /* Change Measure Time 01000_MT[7,6,5] */
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#define BH1750FVI_MEASURE_TIMEL 0x60 /* Change Measute Time 011_MT[4,3,2,1,0] */
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: bh1750fvi_register
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*
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* Description:
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* Register the BH1750FVI character device as 'devpath'
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*
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* Input Parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/light0"
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* i2c - An instance of the I2C interface to use to communicate with
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* BH1750FVI
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* addr - The I2C address of the BH1750FVI.
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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struct i2c_master_s; /* Forward reference */
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int bh1750fvi_register(FAR const char *devpath, FAR struct i2c_master_s *i2c,
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uint8_t addr);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_SENSORS_BH1750FVI */
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#endif /* __INCLUDE_NUTTX_SENSORS_BH1750FVI_H */
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