BH1750FVI Light Sensor¶
Driver for the Rohm BH1750FVI ambient light sensor.
-
BH1750FVI_ADDR_PIN_LOW
¶ ADDR pin := 0.
1
(0x5c)
-
BH1750FVI_ADDR_PIN_HIGH
¶ ADDR pin := 1.
1
(0x23)
-
enum
@112
¶ - BH1750FVI_OK
= 0
- everything was fine
- BH1750FVI_ERR_I2C
= -1
- error initializing the I2C bus
- BH1750FVI_OK
-
int
bh1750fvi_init
(bh1750fvi_t * dev, bh1750fvi_params_t * params)¶ Initialize the given BH1750FVI device.
Parameters
dev: device descriptor of the targeted device params: device configuration (i2c bus, address and bus clock) Return values
- 0 on success
- -1 if unable to speak to the device
-
uint16_t
bh1750fvi_sample
(const bh1750fvi_t * dev)¶ Read a ambient light value from the given device [in LUX].
The result value is the measured ambient light intensity in LUX and ranges from 0 to 54612. Taking one measurement takes ~120ms, so it takes this amount of time until the function returns.
Parameters
dev: device descriptor of the targeted device Return values
- ambient light intensity in LUX
-
BH1750FVI_DEFAULT_ADDR
¶ Default address of BH1750FVI sensors.
1
BH1750FVI_ADDR_PIN_HIGH
-
BH1750FVI_I2C_MAX_CLK
¶ Maximum I2C bus speed to use with the device.
1
I2C_SPEED_FAST
-
struct
bh1750fvi_t
¶ Device descriptor for BH1570FVI devices.
-
i2c.h::i2c_t
i2c
¶ I2C bus the device is connected to.
-
uint8_t
addr
¶ slave address of the device
-
-
struct
bh1750fvi_params_t
¶ Set of configuration parameters for BH1750FV devices.
-
i2c.h::i2c_t
i2c
¶ I2C bus the device is connected to.
-
uint8_t
addr
¶ slave address of the device
-