123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
/****************************************************************************
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* include/nuttx/input/veml6070.h
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*
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* Copyright (C) 2015-2016 Gregory Nutt. All rights reserved.
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* Copyright (C) 2016 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_SENSORS_VEML6070_H
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#define __INCLUDE_NUTTX_SENSORS_VEML6070_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 <nuttx/irq.h>
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#include <nuttx/sensors/ioctl.h>
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#if defined(CONFIG_SENSORS_VEML6070)
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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 VEML6070_I2C_DATA_LSB_CMD_ADDR 0x38
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#define VEML6070_I2C_DATA_MSB_ADDR 0x39
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/* Command Register Format
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* Bits:
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* 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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* RSV | RSV | ACK | ACK_THD | IT1 | IT0 | RSV | SD |
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*
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* NOTE: The RSV Bit 1 needs to be always 1
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*/
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#define VEML6070_CMD_SD 0x01 /* Shutdown command */
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#define VEML6070_CMD_RSV 0x02
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#define VEML6070_CMD_IT_0_5T 0x00 /* IT1=0 : IT0=0 */
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#define VEML6070_CMD_IT_1T 0x04 /* IT1=0 : IT0=1 */
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#define VEML6070_CMD_IT_2T 0x08 /* IT1=1 : IT0=0 */
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#define VEML6070_CMD_IT_4T 0x0c /* IT1=1 : IT0=1 */
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#define VEML6070_CMD_ACK_THD 0x10 /* Acknowledge threshold:
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0 = 102 steps
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1 = 145 steps */
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#define VEML6070_CMD_ACK 0x20 /* Acknowledge activity */
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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: veml6070_register
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*
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* Description:
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* Register the VEML6070 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/uvlight0"
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* i2c - An instance of the I2C interface to use to communicate with
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* VEML6070
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* addr - The I2C address of the VEML6070.
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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;
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int veml6070_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_VEML6070 */
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#endif /* __INCLUDE_NUTTX_SENSORS_VEML6070_H */
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