API Reference

`adafruit_bd3491fs`

CircuitPython library for the Rohm BD3491FS Audio Processor

Hardware:

Software and Dependencies:

class adafruit_bd3491fs.BD3491FS(i2c_bus: I2C)

Driver for the Rohm BD3491FS audio processor

Parameters:: i2c_bus (I2C) – The I2C bus the BD3491FS is connected to.

property active_input: int

The currently selected input. Must be an Input

This example sets A1 and A2 to the active input pair.

bd3491fs.active_input = adafruit_bd3491fs.Input.A

property channel_1_attenuation: int

The attenuation applied to channel 1 of the currently selected input pair in -dB. Maximum is -87dB. To mute set to 255.

This example sets the attenuation for input channel 1 to -10dB.

bd3491fs.channel_1_attenuation = 10

property channel_2_attenuation: int

The attenuation applied to channel 2 of the currently selected input pair in -dB. Maximum is -87dB. To mute set to 255.

This example sets the attenuation for input channel 2 to -10dB.

bd3491fs.channel_2_attenuation = 10

property input_gain: int

The gain applied to all inputs equally

This example sets the input gain to 10dB.

bd3491fs.input_gain = adafruit_bd3491fs.Level.10_DB

reset() → None: Reset the sensor, muting the input, reducting input gain to 0dB, and the output channnel attenuation to maximum

class adafruit_bd3491fs.Input

Options for active_input

class adafruit_bd3491fs.Level

Options for imput_gain