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c57a0d2c30
This driver has been rewritten from scratch. See docs/apichanges.md for a list of API compatibility changes compared to the original driver. Signed-off-by: Jon Trulson <jtrulson@ics.com>
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* Author: Jon Trulson <jtrulson@ics.com>
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* Copyright (c) 2017 Intel Corporation.
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*
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* This driver was rewritten based on the original driver written by:
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* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
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*
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* The MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#define BMPX8X_DEFAULT_I2C_BUS 0
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#define BMPX8X_DEFAULT_I2C_ADDR 0x77
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#define BMPX8X_DEFAULT_CHIPID 0x55
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// special reset byte
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#define BMPX8X_RESET_BYTE 0xb6
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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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* BMPX8X registers.
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*/
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typedef enum {
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BMPX8X_CAL_AC1 = 0xaa, // Calibration data (16
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// bits, msb/lsb)
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BMPX8X_CAL_AC2 = 0xac,
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BMPX8X_CAL_AC3 = 0xae,
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BMPX8X_CAL_AC4 = 0xb0,
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BMPX8X_CAL_AC5 = 0xb2,
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BMPX8X_CAL_AC6 = 0xb4,
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BMPX8X_CAL_B1 = 0xb6,
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BMPX8X_CAL_B2 = 0xb8,
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BMPX8X_CAL_MB = 0xba,
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BMPX8X_CAL_MC = 0xbc,
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BMPX8X_CAL_MD = 0xbe,
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BMPX8X_CTRL_MEAS = 0xf4, // command reg
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BMPX8X_OUTDATA_MSB = 0xf6,
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BMPX8X_OUTDATA_LSB = 0xf7,
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BMPX8X_OUTDATA_XLSB = 0xf8,
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BMPX8X_RESET = 0xe0,
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BMPX8X_CHIP_ID = 0xd0
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} BMPX8X_REGS_T;
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/**
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* BMPX8X_CTRL_MEAS register bits
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*/
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typedef enum {
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BMPX8X_CTRL_MEAS_CMD0 = 0x01, // measurement command
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BMPX8X_CTRL_MEAS_CMD1 = 0x02,
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BMPX8X_CTRL_MEAS_CMD2 = 0x04,
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BMPX8X_CTRL_MEAS_CMD3 = 0x08,
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BMPX8X_CTRL_MEAS_CMD4 = 0x10,
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_BMPX8X_CTRL_MEAS_CMD_MASK = 31,
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_BMPX8X_CTRL_MEAS_CMD_SHIFT = 0,
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BMPX8X_CTRL_MEAS_SCO = 0x20, // start conversion status
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BMPX8X_CTRL_MEAS_OSS0 = 0x40, // oversampling (precision)
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BMPX8X_CTRL_MEAS_OSS1 = 0x80,
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_BMPX8X_CTRL_MEAS_OSS_MASK = 3,
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_BMPX8X_CTRL_MEAS_OSS_SHIFT = 6,
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} BMPX8X_CTRL_MEAS_BITS_T;
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/**
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* BMPX8X_CTRL_MEAS_CMD commands.
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*/
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typedef enum {
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BMPX8X_CMD_READ_TEMP = 0x2e,
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BMPX8X_CMD_READ_PRESSURE = 0x34
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} BMPX8X_CMD_T;
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/**
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* BMPX8X_CTRL_MEAS_OSS, Oversampling ratio values.
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*/
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typedef enum {
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BMPX8X_OSS_ULTRALOWPOWER = 0,
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BMPX8X_OSS_STANDARD = 1,
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BMPX8X_OSS_HIGHRES = 2,
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BMPX8X_OSS_ULTRAHIGHRES = 3
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} BMPX8X_OSS_T;
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#ifdef __cplusplus
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}
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#endif
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