bh1750 - Driver for BH1750 light sensor¶
- group bh1750
ESP-IDF driver for BH1750 light sensor.
Datasheet: ROHM Semiconductor bh1750fvi-e.pdf
Ported from esp-open-rtos
Copyright (c) 2017 Andrej Krutak dev@andree.sk Copyright (c) 2018 Ruslan V. Uss unclerus@gmail.com
BSD Licensed as described in the file LICENSE
Defines
-
BH1750_ADDR_LO¶
I2C address when ADDR pin floating/low.
-
BH1750_ADDR_HI¶
I2C address when ADDR pin high.
Enums
Functions
-
esp_err_t bh1750_init_desc(i2c_dev_t *dev, uint8_t addr, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio)¶
Initialize device descriptor.
- Parameters
dev – [out] Device descriptor
addr – [in] I2C address, BH1750_ADDR_LO or BH1750_ADDR_HI
port – [in] I2C port number
sda_gpio – [in] GPIO pin number for SDA
scl_gpio – [in] GPIO pin number for SCL
- Returns
ESP_OK
on success
-
esp_err_t bh1750_free_desc(i2c_dev_t *dev)¶
Free device descriptor.
- Parameters
dev – Pointer to device descriptor
- Returns
ESP_OK
on success
-
esp_err_t bh1750_power_down(i2c_dev_t *dev)¶
Power down device.
- Parameters
dev – Pointer to device descriptor
- Returns
ESP_OK
on success
-
esp_err_t bh1750_power_on(i2c_dev_t *dev)¶
Power on device.
- Parameters
dev – Pointer to device descriptor
- Returns
ESP_OK
on success
-
esp_err_t bh1750_setup(i2c_dev_t *dev, bh1750_mode_t mode, bh1750_resolution_t resolution)¶
Setup device parameters.
- Parameters
dev – Pointer to device descriptor
mode – Measurement mode
resolution – Measurement resolution
- Returns
ESP_OK
on success
-
BH1750_ADDR_LO¶