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/********************************************************************************************
* drivers/sensors/mpl115a.h
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Alan Carvalho de Assis <acassis@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************************/
#ifndef __DRIVERS_SENSORS_MPL115A_H
#define __DRIVERS_SENSORS_MPL115A_H
#if defined(CONFIG_MPL115A)
/********************************************************************************************
* Pre-processor Definitions
********************************************************************************************/
/* Configuration ****************************************************************************/
/* Prerequisites:
*
* CONFIG_SENSORS_MPL115A
* Enables support for the MPL115A driver
* CONFIG_MPL115A_REGDEBUG
* Enable very low register-level debug output. Requires CONFIG_DEBUG.
*/
/* There are two types of MPL115A chips. The MPL115A1 communicates with the target CPU
* via a SPI interface. The MPL115A2 communicates via I2C interface.
* Note: This driver only supports MPL115A1 (SPI Interface).
*/
/* SPI **************************************************************************************/
/* The device always operates in mode 0 */
#define MPL115A_SPI_MODE SPIDEV_MODE0 /* Mode 0 */
/* SPI frequency */
#define MPL115A_SPI_MAXFREQUENCY 800000 /* 8MHz */
/* MPL115A Registers ************************************************************************/
/* Register Addresses */
#define MPL115A_BASE_CMD 0x80
#define MPL115A_PADC_MSB 0x00 /* 10-bit Pressure ADC output value MSB */
#define MPL115A_PADC_LSB 0x01 /* 10-bit Pressure ADC output value LSB */
#define MPL115A_TADC_MSB 0x02 /* 10-bit Temperature ADC output value MSB */
#define MPL115A_TADC_LSB 0x03 /* 10-bit Temperature ADC output value LSB */
#define MPL115A_A0_MSB 0x04 /* a0 coefficient MSB */
#define MPL115A_A0_LSB 0x05 /* a0 coefficient LSB */
#define MPL115A_B1_MSB 0x06 /* b1 coefficient MSB */
#define MPL115A_B1_LSB 0x07 /* b1 coefficient LSB */
#define MPL115A_B2_MSB 0x08 /* b2 coefficient MSB */
#define MPL115A_B2_LSB 0x09 /* b2 coefficient LSB */
#define MPL115A_C12_MSB 0x0a /* c12 coefficient MSB */
#define MPL115A_C12_LSB 0x0b /* c12 coefficient LSB */
/* 0x0c - 0x11 are reserved */
#define MPL115A_CONVERT 0x12 /* Start Pressure and Temperature Conversion */
/********************************************************************************************
* Public Function Prototypes
********************************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Name: mpl115a_register
*
* Description:
* Register the MPL115A character device as 'devpath'
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/temp0"
* spi - An instance of the SPI interface to use to communicate with
* MPL115A
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int mpl115a_register(FAR const char *devpath, FAR struct spi_dev_s *spi);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* CONFIG_SENSORS_MPL115A */
#endif /* __DRIVERS_SENSORS_MPL115A_H */
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