161 lines
5.2 KiB
C
161 lines
5.2 KiB
C
/*
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* Copyright (c) 2016, 2017 Intel Corporation
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* Copyright (c) 2017 IpTronix S.r.l.
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* Copyright (c) 2021 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_BME280_BME280_H_
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#define ZEPHYR_DRIVERS_SENSOR_BME280_BME280_H_
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#include <zephyr/types.h>
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#include <device.h>
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#include <devicetree.h>
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#include <drivers/spi.h>
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#include <drivers/i2c.h>
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#define DT_DRV_COMPAT bosch_bme280
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#define BME280_BUS_SPI DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
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#define BME280_BUS_I2C DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
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union bme280_bus_config {
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#if BME280_BUS_SPI
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struct spi_config spi_cfg;
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#endif
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#if BME280_BUS_I2C
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uint16_t i2c_addr;
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#endif
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};
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typedef int (*bme280_bus_check_fn)(const struct device *bus,
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const union bme280_bus_config *bus_config);
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typedef int (*bme280_reg_read_fn)(const struct device *bus,
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const union bme280_bus_config *bus_config,
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uint8_t start, uint8_t *buf, int size);
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typedef int (*bme280_reg_write_fn)(const struct device *bus,
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const union bme280_bus_config *bus_config,
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uint8_t reg, uint8_t val);
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struct bme280_bus_io {
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bme280_bus_check_fn check;
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bme280_reg_read_fn read;
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bme280_reg_write_fn write;
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};
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#if BME280_BUS_SPI
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#define BME280_SPI_OPERATION (SPI_WORD_SET(8) | SPI_TRANSFER_MSB | \
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SPI_MODE_CPOL | SPI_MODE_CPHA)
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extern const struct bme280_bus_io bme280_bus_io_spi;
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#endif
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#if BME280_BUS_I2C
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extern const struct bme280_bus_io bme280_bus_io_i2c;
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#endif
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#define BME280_REG_PRESS_MSB 0xF7
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#define BME280_REG_COMP_START 0x88
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#define BME280_REG_HUM_COMP_PART1 0xA1
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#define BME280_REG_HUM_COMP_PART2 0xE1
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#define BME280_REG_ID 0xD0
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#define BME280_REG_CONFIG 0xF5
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#define BME280_REG_CTRL_MEAS 0xF4
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#define BME280_REG_CTRL_HUM 0xF2
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#define BME280_REG_STATUS 0xF3
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#define BMP280_CHIP_ID_SAMPLE_1 0x56
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#define BMP280_CHIP_ID_SAMPLE_2 0x57
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#define BMP280_CHIP_ID_MP 0x58
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#define BME280_CHIP_ID 0x60
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#define BME280_MODE_SLEEP 0x00
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#define BME280_MODE_FORCED 0x01
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#define BME280_MODE_NORMAL 0x03
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#define BME280_SPI_3W_DISABLE 0x00
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#if defined CONFIG_BME280_MODE_NORMAL
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#define BME280_MODE BME280_MODE_NORMAL
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#elif defined CONFIG_BME280_MODE_FORCED
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#define BME280_MODE BME280_MODE_FORCED
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#endif
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#if defined CONFIG_BME280_TEMP_OVER_1X
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#define BME280_TEMP_OVER (1 << 5)
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#elif defined CONFIG_BME280_TEMP_OVER_2X
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#define BME280_TEMP_OVER (2 << 5)
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#elif defined CONFIG_BME280_TEMP_OVER_4X
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#define BME280_TEMP_OVER (3 << 5)
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#elif defined CONFIG_BME280_TEMP_OVER_8X
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#define BME280_TEMP_OVER (4 << 5)
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#elif defined CONFIG_BME280_TEMP_OVER_16X
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#define BME280_TEMP_OVER (5 << 5)
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#endif
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#if defined CONFIG_BME280_PRESS_OVER_1X
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#define BME280_PRESS_OVER (1 << 2)
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#elif defined CONFIG_BME280_PRESS_OVER_2X
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#define BME280_PRESS_OVER (2 << 2)
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#elif defined CONFIG_BME280_PRESS_OVER_4X
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#define BME280_PRESS_OVER (3 << 2)
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#elif defined CONFIG_BME280_PRESS_OVER_8X
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#define BME280_PRESS_OVER (4 << 2)
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#elif defined CONFIG_BME280_PRESS_OVER_16X
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#define BME280_PRESS_OVER (5 << 2)
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#endif
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#if defined CONFIG_BME280_HUMIDITY_OVER_1X
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#define BME280_HUMIDITY_OVER 1
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#elif defined CONFIG_BME280_HUMIDITY_OVER_2X
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#define BME280_HUMIDITY_OVER 2
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#elif defined CONFIG_BME280_HUMIDITY_OVER_4X
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#define BME280_HUMIDITY_OVER 3
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#elif defined CONFIG_BME280_HUMIDITY_OVER_8X
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#define BME280_HUMIDITY_OVER 4
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#elif defined CONFIG_BME280_HUMIDITY_OVER_16X
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#define BME280_HUMIDITY_OVER 5
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#endif
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#if defined CONFIG_BME280_STANDBY_05MS
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#define BME280_STANDBY 0
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#elif defined CONFIG_BME280_STANDBY_62MS
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#define BME280_STANDBY (1 << 5)
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#elif defined CONFIG_BME280_STANDBY_125MS
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#define BME280_STANDBY (2 << 5)
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#elif defined CONFIG_BME280_STANDBY_250MS
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#define BME280_STANDBY (3 << 5)
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#elif defined CONFIG_BME280_STANDBY_500MS
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#define BME280_STANDBY (4 << 5)
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#elif defined CONFIG_BME280_STANDBY_1000MS
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#define BME280_STANDBY (5 << 5)
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#elif defined CONFIG_BME280_STANDBY_2000MS
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#define BME280_STANDBY (6 << 5)
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#elif defined CONFIG_BME280_STANDBY_4000MS
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#define BME280_STANDBY (7 << 5)
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#endif
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#if defined CONFIG_BME280_FILTER_OFF
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#define BME280_FILTER 0
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#elif defined CONFIG_BME280_FILTER_2
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#define BME280_FILTER (1 << 2)
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#elif defined CONFIG_BME280_FILTER_4
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#define BME280_FILTER (2 << 2)
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#elif defined CONFIG_BME280_FILTER_8
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#define BME280_FILTER (3 << 2)
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#elif defined CONFIG_BME280_FILTER_16
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#define BME280_FILTER (4 << 2)
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#endif
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#define BME280_CTRL_MEAS_VAL (BME280_PRESS_OVER | \
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BME280_TEMP_OVER | \
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BME280_MODE)
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#define BME280_CONFIG_VAL (BME280_STANDBY | \
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BME280_FILTER | \
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BME280_SPI_3W_DISABLE)
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#define BME280_CTRL_MEAS_OFF_VAL (BME280_PRESS_OVER | \
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BME280_TEMP_OVER | \
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BME280_MODE_SLEEP)
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#endif /* ZEPHYR_DRIVERS_SENSOR_BME280_BME280_H_ */
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