162 lines
5.3 KiB
C
162 lines
5.3 KiB
C
/*
|
|
* Copyright (c) 2016, 2017 Intel Corporation
|
|
* Copyright (c) 2017 IpTronix S.r.l.
|
|
* Copyright (c) 2021 Nordic Semiconductor ASA
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#ifndef ZEPHYR_DRIVERS_SENSOR_BME280_BME280_H_
|
|
#define ZEPHYR_DRIVERS_SENSOR_BME280_BME280_H_
|
|
|
|
#include <zephyr/types.h>
|
|
#include <zephyr/device.h>
|
|
#include <zephyr/devicetree.h>
|
|
#include <zephyr/drivers/spi.h>
|
|
#include <zephyr/drivers/i2c.h>
|
|
|
|
#define DT_DRV_COMPAT bosch_bme280
|
|
|
|
#define BME280_BUS_SPI DT_ANY_INST_ON_BUS_STATUS_OKAY(spi)
|
|
#define BME280_BUS_I2C DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
|
|
|
|
union bme280_bus {
|
|
#if BME280_BUS_SPI
|
|
struct spi_dt_spec spi;
|
|
#endif
|
|
#if BME280_BUS_I2C
|
|
struct i2c_dt_spec i2c;
|
|
#endif
|
|
};
|
|
|
|
typedef int (*bme280_bus_check_fn)(const union bme280_bus *bus);
|
|
typedef int (*bme280_reg_read_fn)(const union bme280_bus *bus,
|
|
uint8_t start, uint8_t *buf, int size);
|
|
typedef int (*bme280_reg_write_fn)(const union bme280_bus *bus,
|
|
uint8_t reg, uint8_t val);
|
|
|
|
struct bme280_bus_io {
|
|
bme280_bus_check_fn check;
|
|
bme280_reg_read_fn read;
|
|
bme280_reg_write_fn write;
|
|
};
|
|
|
|
#if BME280_BUS_SPI
|
|
#define BME280_SPI_OPERATION (SPI_WORD_SET(8) | SPI_TRANSFER_MSB | \
|
|
SPI_MODE_CPOL | SPI_MODE_CPHA)
|
|
extern const struct bme280_bus_io bme280_bus_io_spi;
|
|
#endif
|
|
|
|
#if BME280_BUS_I2C
|
|
extern const struct bme280_bus_io bme280_bus_io_i2c;
|
|
#endif
|
|
|
|
#define BME280_REG_PRESS_MSB 0xF7
|
|
#define BME280_REG_COMP_START 0x88
|
|
#define BME280_REG_HUM_COMP_PART1 0xA1
|
|
#define BME280_REG_HUM_COMP_PART2 0xE1
|
|
#define BME280_REG_ID 0xD0
|
|
#define BME280_REG_CONFIG 0xF5
|
|
#define BME280_REG_CTRL_MEAS 0xF4
|
|
#define BME280_REG_CTRL_HUM 0xF2
|
|
#define BME280_REG_STATUS 0xF3
|
|
#define BME280_REG_RESET 0xE0
|
|
|
|
#define BMP280_CHIP_ID_SAMPLE_1 0x56
|
|
#define BMP280_CHIP_ID_SAMPLE_2 0x57
|
|
#define BMP280_CHIP_ID_MP 0x58
|
|
#define BME280_CHIP_ID 0x60
|
|
#define BME280_MODE_SLEEP 0x00
|
|
#define BME280_MODE_FORCED 0x01
|
|
#define BME280_MODE_NORMAL 0x03
|
|
#define BME280_SPI_3W_DISABLE 0x00
|
|
#define BME280_CMD_SOFT_RESET 0xB6
|
|
#define BME280_STATUS_MEASURING 0x08
|
|
#define BME280_STATUS_IM_UPDATE 0x01
|
|
|
|
#if defined CONFIG_BME280_MODE_NORMAL
|
|
#define BME280_MODE BME280_MODE_NORMAL
|
|
#elif defined CONFIG_BME280_MODE_FORCED
|
|
#define BME280_MODE BME280_MODE_FORCED
|
|
#endif
|
|
|
|
#if defined CONFIG_BME280_TEMP_OVER_1X
|
|
#define BME280_TEMP_OVER (1 << 5)
|
|
#elif defined CONFIG_BME280_TEMP_OVER_2X
|
|
#define BME280_TEMP_OVER (2 << 5)
|
|
#elif defined CONFIG_BME280_TEMP_OVER_4X
|
|
#define BME280_TEMP_OVER (3 << 5)
|
|
#elif defined CONFIG_BME280_TEMP_OVER_8X
|
|
#define BME280_TEMP_OVER (4 << 5)
|
|
#elif defined CONFIG_BME280_TEMP_OVER_16X
|
|
#define BME280_TEMP_OVER (5 << 5)
|
|
#endif
|
|
|
|
#if defined CONFIG_BME280_PRESS_OVER_1X
|
|
#define BME280_PRESS_OVER (1 << 2)
|
|
#elif defined CONFIG_BME280_PRESS_OVER_2X
|
|
#define BME280_PRESS_OVER (2 << 2)
|
|
#elif defined CONFIG_BME280_PRESS_OVER_4X
|
|
#define BME280_PRESS_OVER (3 << 2)
|
|
#elif defined CONFIG_BME280_PRESS_OVER_8X
|
|
#define BME280_PRESS_OVER (4 << 2)
|
|
#elif defined CONFIG_BME280_PRESS_OVER_16X
|
|
#define BME280_PRESS_OVER (5 << 2)
|
|
#endif
|
|
|
|
#if defined CONFIG_BME280_HUMIDITY_OVER_1X
|
|
#define BME280_HUMIDITY_OVER 1
|
|
#elif defined CONFIG_BME280_HUMIDITY_OVER_2X
|
|
#define BME280_HUMIDITY_OVER 2
|
|
#elif defined CONFIG_BME280_HUMIDITY_OVER_4X
|
|
#define BME280_HUMIDITY_OVER 3
|
|
#elif defined CONFIG_BME280_HUMIDITY_OVER_8X
|
|
#define BME280_HUMIDITY_OVER 4
|
|
#elif defined CONFIG_BME280_HUMIDITY_OVER_16X
|
|
#define BME280_HUMIDITY_OVER 5
|
|
#endif
|
|
|
|
#if defined CONFIG_BME280_STANDBY_05MS
|
|
#define BME280_STANDBY 0
|
|
#elif defined CONFIG_BME280_STANDBY_62MS
|
|
#define BME280_STANDBY (1 << 5)
|
|
#elif defined CONFIG_BME280_STANDBY_125MS
|
|
#define BME280_STANDBY (2 << 5)
|
|
#elif defined CONFIG_BME280_STANDBY_250MS
|
|
#define BME280_STANDBY (3 << 5)
|
|
#elif defined CONFIG_BME280_STANDBY_500MS
|
|
#define BME280_STANDBY (4 << 5)
|
|
#elif defined CONFIG_BME280_STANDBY_1000MS
|
|
#define BME280_STANDBY (5 << 5)
|
|
#elif defined CONFIG_BME280_STANDBY_2000MS
|
|
#define BME280_STANDBY (6 << 5)
|
|
#elif defined CONFIG_BME280_STANDBY_4000MS
|
|
#define BME280_STANDBY (7 << 5)
|
|
#endif
|
|
|
|
#if defined CONFIG_BME280_FILTER_OFF
|
|
#define BME280_FILTER 0
|
|
#elif defined CONFIG_BME280_FILTER_2
|
|
#define BME280_FILTER (1 << 2)
|
|
#elif defined CONFIG_BME280_FILTER_4
|
|
#define BME280_FILTER (2 << 2)
|
|
#elif defined CONFIG_BME280_FILTER_8
|
|
#define BME280_FILTER (3 << 2)
|
|
#elif defined CONFIG_BME280_FILTER_16
|
|
#define BME280_FILTER (4 << 2)
|
|
#endif
|
|
|
|
#define BME280_CTRL_MEAS_VAL (BME280_PRESS_OVER | \
|
|
BME280_TEMP_OVER | \
|
|
BME280_MODE)
|
|
#define BME280_CONFIG_VAL (BME280_STANDBY | \
|
|
BME280_FILTER | \
|
|
BME280_SPI_3W_DISABLE)
|
|
|
|
|
|
#define BME280_CTRL_MEAS_OFF_VAL (BME280_PRESS_OVER | \
|
|
BME280_TEMP_OVER | \
|
|
BME280_MODE_SLEEP)
|
|
|
|
#endif /* ZEPHYR_DRIVERS_SENSOR_BME280_BME280_H_ */
|