#include <errno.h>#include <math.h>#include <stdint.h>#include <stdio.h>#include <unistd.h>#include <fcntl.h>#include <linux/i2c-dev.h>#include <sys/ioctl.h>#include <sys/stat.h>#include <sys/types.h>#include "../log.h"#include "../types.h"
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Data Structures | |
| struct | BME280_calibration_t |
Functions | |
| int | BME280_init (int) |
| void | BME280_close (int) |
| int | BME280_read (int) |
| int32_t | BME280_getValue (int, int) |
| int | BME280_getID (void) |
| int | BME280_readCalibration (int) |
| int | BME280_setParameters (int) |
| int | BME280_getIndex (int) |
| int32_t | BME280_compensate_temperature_fine (int, int32_t) |
| int32_t | BME280_compensate_temperature (int, int32_t) |
| uint32_t | BME280_compensate_preasure (int, int32_t, int32_t) |
| uint32_t | BME280_compensate_humidity (int, int32_t, int32_t) |
Macro Definition Documentation
| #define BME280_CALIBRATION_BLOCK1_SIZE 26 |
Definition at line 78 of file bme280.h.
Referenced by BME280_readCalibration().
| #define BME280_CALIBRATION_BLOCK2_SIZE 7 |
Definition at line 79 of file bme280.h.
Referenced by BME280_readCalibration().
| #define BME280_CHANNEL_HUMIDITY 1 |
Definition at line 55 of file bme280.h.
Referenced by BME280_getValue().
| #define BME280_CHANNEL_PREASURE 2 |
Definition at line 56 of file bme280.h.
Referenced by BME280_getValue().
| #define BME280_CHANNEL_TEMPERATURE 0 |
Definition at line 54 of file bme280.h.
Referenced by BME280_getValue().
| #define BME280_DATA_BLOCK_SIZE 8 |
Definition at line 81 of file bme280.h.
Referenced by BME280_read().
| #define BME280_FILTER_OFF 0x00 |
Definition at line 119 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_I2C_ADDRESS_LEFT 0x76 |
Copyright (c) 2016-2017, Swiss Federal Institute of Technology (ETH Zurich) All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- 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.
- Neither the name of the copyright holder 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 HOLDER 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.
| #define BME280_I2C_ADDRESSES { (BME280_I2C_ADDRESS_LEFT) } |
| #define BME280_ID 0x60 |
Definition at line 59 of file bme280.h.
Referenced by BME280_init().
| #define BME280_MODE_NORMAL 0x03 |
Definition at line 109 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_OVERSAMPLE_HUMIDITY_1 0x01 |
Definition at line 86 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_OVERSAMPLE_PREASURE_1 0x04 |
Definition at line 102 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_OVERSAMPLE_TEMPERATURE_1 0x20 |
Definition at line 96 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_REG_CALIBRATION_BLOCK1 0x88 |
Definition at line 61 of file bme280.h.
Referenced by BME280_readCalibration().
| #define BME280_REG_CALIBRATION_BLOCK2 0xE1 |
Definition at line 64 of file bme280.h.
Referenced by BME280_readCalibration().
| #define BME280_REG_CONFIG 0xF5 |
Definition at line 68 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_REG_CONTROL_HUMIDITY 0xF2 |
Definition at line 65 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_REG_CONTROL_MEASURE 0xF4 |
Definition at line 67 of file bme280.h.
Referenced by BME280_setParameters().
| #define BME280_REG_ID 0xD0 |
Definition at line 62 of file bme280.h.
Referenced by BME280_getID().
| #define BME280_REG_PREASURE_MSB 0xF7 |
Definition at line 69 of file bme280.h.
Referenced by BME280_read().
| #define BME280_STANDBY_DURATION_250 0x60 |
Definition at line 114 of file bme280.h.
Referenced by BME280_setParameters().
Function Documentation
| void BME280_close | ( | int | sensor_identifier | ) |
| uint32_t BME280_compensate_humidity | ( | int | sensor_identifier, |
| int32_t | humidity_raw, | ||
| int32_t | temperature_raw | ||
| ) |
Get the compensated relative humidity in micros (0.0001 percents).
- Parameters
-
sensor_identifier The I2C address of the sensor humidity_raw The raw humidity reading temperature_raw The raw temperature reading
- Returns
- The compensated humidity in micros (0.0001 percents)
Definition at line 397 of file bme280.c.
References BME280_calibration, BME280_compensate_temperature_fine(), BME280_getIndex(), BME280_calibration_t::H1, BME280_calibration_t::H2, BME280_calibration_t::H3, BME280_calibration_t::H4, BME280_calibration_t::H5, and BME280_calibration_t::H6.
Referenced by BME280_read().
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| uint32_t BME280_compensate_preasure | ( | int | sensor_identifier, |
| int32_t | preasure_raw, | ||
| int32_t | temperature_raw | ||
| ) |
Get the compensated preasure in milli Pascal.
- Parameters
-
sensor_identifier The I2C address of the sensor preasure_raw The raw preasure reading temperature_raw The raw temperature reading
- Returns
- The compensated preasure in 0.001 Pascal
Definition at line 352 of file bme280.c.
References BME280_calibration, BME280_compensate_temperature_fine(), BME280_getIndex(), BME280_calibration_t::P1, BME280_calibration_t::P2, BME280_calibration_t::P3, BME280_calibration_t::P4, BME280_calibration_t::P5, BME280_calibration_t::P6, BME280_calibration_t::P7, BME280_calibration_t::P8, and BME280_calibration_t::P9.
Referenced by BME280_read().
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| int32_t BME280_compensate_temperature | ( | int | sensor_identifier, |
| int32_t | temperature_raw | ||
| ) |
Get the compensated temperature in milli degree centigrade.
- Parameters
-
sensor_identifier The I2C address of the sensor temperature_raw The raw temperature reading
- Returns
- The compensated temperature in 0.001 degree centigrade
Definition at line 337 of file bme280.c.
References BME280_compensate_temperature_fine().
Referenced by BME280_read().
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| int32_t BME280_compensate_temperature_fine | ( | int | sensor_identifier, |
| int32_t | temperature_raw | ||
| ) |
Get fine grained temperature compensation value for further processing.
- Parameters
-
sensor_identifier The I2C address of the sensor temperature_raw The raw temperature reading
- Returns
- Fine grained, compensated temperature (arbritrary unit)
Definition at line 310 of file bme280.c.
References BME280_calibration, BME280_getIndex(), BME280_calibration_t::T1, BME280_calibration_t::T2, and BME280_calibration_t::T3.
Referenced by BME280_compensate_humidity(), BME280_compensate_preasure(), and BME280_compensate_temperature().
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| int BME280_getID | ( | void | ) |
Get the device ID
- Parameters
-
sensor_identifier The I2C address of the sensor
- Returns
- Devie ID or negative status code
Definition at line 169 of file bme280.c.
References BME280_REG_ID, ERROR, rl_log(), sensor_bus, and Sensors_getSharedBus().
Referenced by BME280_init().
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| int BME280_getIndex | ( | int | sensor_identifier | ) |
Get the index of the sensor with specified address.
- Parameters
-
sensor_identifier The sensor address used to look up the index
- Returns
- The index of the sensor, or if not found -1
Definition at line 293 of file bme280.c.
References BME280_sensors.
Referenced by BME280_compensate_humidity(), BME280_compensate_preasure(), BME280_compensate_temperature_fine(), BME280_getValue(), BME280_read(), and BME280_readCalibration().
| int32_t BME280_getValue | ( | int | sensor_identifier, |
| int | channel | ||
| ) |
Get the values read from the sensor
- Parameters
-
sensor_identifier The I2C address of the sensor channel The channel of the sensor to get
- Returns
- Channel value
Definition at line 146 of file bme280.c.
References BME280_CHANNEL_HUMIDITY, BME280_CHANNEL_PREASURE, BME280_CHANNEL_TEMPERATURE, BME280_getIndex(), BME280_humidity, BME280_preasure, and BME280_temperature.
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| int BME280_init | ( | int | sensor_identifier | ) |
Initialize the light sensor
- Parameters
-
sensor_identifier The I2C address of the sensor
- Returns
- return code
Definition at line 48 of file bme280.c.
References BME280_getID(), BME280_ID, BME280_readCalibration(), BME280_setParameters(), ERROR, FAILURE, rl_log(), sensor_bus, Sensors_getSharedBus(), Sensors_initSharedComm(), and SUCCESS.
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| int BME280_read | ( | int | sensor_identifier | ) |
Read the sensor values.
- Parameters
-
sensor_identifier The I2C address of the sensor
- Returns
- Value in lux
Definition at line 98 of file bme280.c.
References BME280_compensate_humidity(), BME280_compensate_preasure(), BME280_compensate_temperature(), BME280_DATA_BLOCK_SIZE, BME280_getIndex(), BME280_humidity, BME280_preasure, BME280_REG_PREASURE_MSB, BME280_temperature, ERROR, FAILURE, rl_log(), sensor_bus, Sensors_getSharedBus(), Sensors_initSharedComm(), and SUCCESS.
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| int BME280_readCalibration | ( | int | sensor_identifier | ) |
Read the sensor specifc calibration values.
- Parameters
-
sensor_identifier The I2C address of the sensor
- Returns
- Status code
Definition at line 185 of file bme280.c.
References BME280_calibration, BME280_CALIBRATION_BLOCK1_SIZE, BME280_CALIBRATION_BLOCK2_SIZE, BME280_getIndex(), BME280_REG_CALIBRATION_BLOCK1, BME280_REG_CALIBRATION_BLOCK2, ERROR, FAILURE, BME280_calibration_t::H1, BME280_calibration_t::H2, BME280_calibration_t::H3, BME280_calibration_t::H4, BME280_calibration_t::H5, BME280_calibration_t::H6, BME280_calibration_t::P1, BME280_calibration_t::P2, BME280_calibration_t::P3, BME280_calibration_t::P4, BME280_calibration_t::P5, BME280_calibration_t::P6, BME280_calibration_t::P7, BME280_calibration_t::P8, BME280_calibration_t::P9, rl_log(), sensor_bus, Sensors_getSharedBus(), SUCCESS, BME280_calibration_t::T1, BME280_calibration_t::T2, and BME280_calibration_t::T3.
Referenced by BME280_init().
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| int BME280_setParameters | ( | int | sensor_identifier | ) |
Set the sensor parameter to default for continuous sensing.
- Returns
- Status code
Definition at line 252 of file bme280.c.
References BME280_FILTER_OFF, BME280_MODE_NORMAL, BME280_OVERSAMPLE_HUMIDITY_1, BME280_OVERSAMPLE_PREASURE_1, BME280_OVERSAMPLE_TEMPERATURE_1, BME280_REG_CONFIG, BME280_REG_CONTROL_HUMIDITY, BME280_REG_CONTROL_MEASURE, BME280_STANDBY_DURATION_250, ERROR, FAILURE, rl_log(), sensor_bus, Sensors_getSharedBus(), and SUCCESS.
Referenced by BME280_init().
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