ms5611: Driver for barometic pressure sensor MS5611-01BA03

Defines

MS5611_ADDR_CSB_HIGH

MS5611_ADDR_CSB_LOW

Enums

enum ms5611_osr_t

Oversampling ratio.

Values:

enumerator MS5611_OSR_256

256 samples per measurement

enumerator MS5611_OSR_512

512 samples per measurement

enumerator MS5611_OSR_1024

1024 samples per measurement

enumerator MS5611_OSR_2048

2048 samples per measurement

enumerator MS5611_OSR_4096

4096 samples per measurement

Functions

esp_err_t ms5611_init_desc(ms5611_t *dev, uint8_t addr, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio)

Initialize device descriptor.

Parameters:

dev – Device descriptor

addr – I2C address, MS5611_ADDR_CSB_HIGH or MS5611_ADDR_CSB_LOW

port – I2C port

sda_gpio – GPIO pin for SDA

scl_gpio – GPIO pin for SCL

Returns:

ESP_OK on success

esp_err_t ms5611_free_desc(ms5611_t *dev)

Free device descriptor.

Parameters:

dev – Device descriptor

Returns:

ESP_OK on success

esp_err_t ms5611_init(ms5611_t *dev, ms5611_osr_t osr)

Init MS5611-01BA03.

Reset device and read calibration data

Parameters:

dev – Device descriptor

osr – Oversampling ratio

Returns:

ESP_OK on success

esp_err_t ms5611_get_sensor_data(ms5611_t *dev, int32_t *pressure, float *temperature)

Measure pressure and temperature.

Parameters:

dev – Device descriptor

pressure – [out] Pressure, Pa

temperature – [out] Temperature, degrees Celsius

Returns:

ESP_OK on success

struct ms5611_config_data_t

#include <ms5611.h>

Configuration data.

Public Members

uint16_t sens

C1 Pressure sensitivity | SENS_t1.

uint16_t off

C2 Pressure offset | OFF_t1.

uint16_t tcs

C3 Temperature coefficient of pressure sensitivity | TCS.

uint16_t tco

C4 Temperature coefficient of pressure offset | TCO.

uint16_t t_ref

C5 Reference temperature | T_ref.

uint16_t tempsens

C6 Temperature coefficient of the temperature | TEMPSENSE.

struct ms5611_t

#include <ms5611.h>

Device descriptor.

Public Members

i2c_dev_t i2c_dev

I2C device settings.

ms5611_osr_t osr

Oversampling setting.

ms5611_config_data_t config_data

Device configuration, filled upon initialize.