`is31fl3236a`¶

CircuitPython helper library for the IS31FL3236A LED driver IC

Author(s): Randy Glenn

Implementation Notes¶

Hardware:

Any device using the IS31FL3236A from Lumissil: https://www.lumissil.com/assets/pdf/core/FIS31FL3236A_DS.pdf

Software and Dependencies:

Adafruit CircuitPython firmware for the supported boards: https://github.com/adafruit/circuitpython/releases
Adafruit’s Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
Adafruit’s Register library: https://github.com/adafruit/Adafruit_CircuitPython_Register

class is31fl3236a.IS31FL3236A(i2c_bus, *, address=60)¶

Initialise the IS31FL3236A chip at address on i2c_bus.

Parameters

i2c_bus (I2C) – The I2C bus which the IS31FL3236A is connected to.
address (int) – The I2C address of the IS31FL3236A.
reference_clock_speed (int) – The frequency of the internal reference clock in Hertz.

channels¶: Sequence of 36 PWMChannel objects. One for each channel.

deinit()¶: Stop using the IS31FL3236A.

property frequency¶: The overall PWM frequency in Hertz. Valid values for IS31FL3236A are 3000 and 22000 Hz

reset()¶: Reset the chip.

class is31fl3236a.IS31FLChannels(is31fl)¶: Lazily creates and caches channel objects as needed. Treat it like a sequence.

class is31fl3236a.PWMChannel(is31fl, index)¶

A single IS31FL3236A channel that matches the PWMOut API.

property duty_cycle¶: 16 bit value that dictates how much of one cycle is high (1) versus low (0). 0xffff will always be high, 0 will always be low and 0x7fff will be half high and then half low.

property frequency¶: The overall PWM frequency in Hertz (read-only). A PWMChannel’s frequency cannot be set individually. All channels share a common frequency, set by IS31FL3236A.frequency.