bmp180 - Driver for BMP180 digital pressure sensor¶
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group
bmp180
ESP-IDF driver for BMP180 digital pressure sensor.
Ported from esp-open-rtos
Copyright (C) 2015 Frank Bargstedt
Copyright (C) 2018 Ruslan V. Uss
unclerus@gmail.comMIT Licensed as described in the file LICENSE
Defines
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BMP180_DEVICE_ADDRESS
¶ I2C address.
Enums
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enum
bmp180_mode_t
¶ Hardware accuracy mode.
See Table 3 of the datasheet
Values:
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enumerator
BMP180_MODE_ULTRA_LOW_POWER
¶ 1 sample, 4.5 ms
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enumerator
BMP180_MODE_STANDARD
¶ 2 samples, 7.5 ms
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enumerator
BMP180_MODE_HIGH_RESOLUTION
¶ 4 samples, 13.5 ms
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enumerator
BMP180_MODE_ULTRA_HIGH_RESOLUTION
¶ 8 samples, 25.5 ms
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enumerator
Functions
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esp_err_t
bmp180_init_desc
(bmp180_dev_t *dev, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio)¶ Initialize device descriptor.
- Return
ESP_OK
on success- Parameters
[out] dev
: Pointer to device descriptorport
: I2C port numbersda_gpio
: GPIO pin number for SDAscl_gpio
: GPIO pin number for SCL
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esp_err_t
bmp180_free_desc
(bmp180_dev_t *dev)¶ Free device descriptor.
- Return
ESP_OK
on success- Parameters
dev
: Pointer to BMP180 device descriptor
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esp_err_t
bmp180_init
(bmp180_dev_t *dev)¶ Init bmp180 device.
- Return
ESP_OK
on success- Parameters
dev
: Pointer to BMP180 device descriptor
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esp_err_t
bmp180_measure
(bmp180_dev_t *dev, float *temperature, uint32_t *pressure, bmp180_mode_t oss)¶ Measure temperature and pressure.
- Return
ESP_OK
on success- Parameters
dev
: Pointer to BMP180 device descriptor[out] temperature
: Temperature in degrees Celsius[out] pressure
: Pressure in Paoss
: Measurement mode
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struct
bmp180_dev_t
¶ - #include <bmp180.h>
BMP180 device descriptor.
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