bmp180 - Driver for BMP180 digital pressure sensor¶
- 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
-
BMP180_DEVICE_ADDRESS¶
I2C address.
Enums
-
enum bmp180_mode_t¶
Hardware accuracy mode.
See Table 3 of the datasheet
Values:
-
enumerator BMP180_MODE_ULTRA_LOW_POWER¶
1 sample, 4.5 ms
-
enumerator BMP180_MODE_STANDARD¶
2 samples, 7.5 ms
-
enumerator BMP180_MODE_HIGH_RESOLUTION¶
4 samples, 13.5 ms
-
enumerator BMP180_MODE_ULTRA_HIGH_RESOLUTION¶
8 samples, 25.5 ms
-
enumerator BMP180_MODE_ULTRA_LOW_POWER¶
Functions
-
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.
- Parameters
dev – Device descriptor
port – I2C port number
sda_gpio – GPIO pin number for SDA
scl_gpio – GPIO pin number for SCL
- Returns
ESP_OK
on success
-
esp_err_t bmp180_free_desc(bmp180_dev_t *dev)¶
Free device descriptor.
- Parameters
dev – Pointer to BMP180 device descriptor
- Returns
ESP_OK
on success
-
esp_err_t bmp180_init(bmp180_dev_t *dev)¶
Initialize device.
- Parameters
dev – Pointer to BMP180 device descriptor
- Returns
ESP_OK
on success
-
esp_err_t bmp180_measure(bmp180_dev_t *dev, float *temperature, uint32_t *pressure, bmp180_mode_t oss)¶
Measure temperature and pressure.
- Parameters
dev – Pointer to BMP180 device descriptor
temperature – [out] Temperature in degrees Celsius
pressure – [out] Pressure in Pa
oss – Measurement mode
- Returns
ESP_OK
on success
-
struct bmp180_dev_t¶
- #include <bmp180.h>
BMP180 device descriptor.
-
BMP180_DEVICE_ADDRESS¶