API.md

Octofet API

class Octofet

Create an object of type Octofet to communicate with a particular Octofet board. One Octofet board provides 8 power switches also known as "channels".

Octofet(pin_CE: int, device_count: int = 1)

Constructs a new Octofet board object that uses the default hardware SPI bus.

• pin_CE: the chip enable (also known as chip select or slave select) pin used to control the shift-register latch. It can take the values 0 or 1, which corresponds to the CE0 or CE1 pins on the Raspberry Pi board.
• device_count: the number of Octofet boards connected in a daisy-chain. If omitted, defines a single Octofet board.

digital_write(channel: int, value: bool, device: int = 0) -> None

Sets the state ("on" or "off") of one power switch.

• channel: the power switch index. Ranges from 0 to 7.
• value: defines the desired switch state. Valid values: True to turn on or False to turn off.
• device: the index of the affected Octofet in the daisy-chain. Ranges from 0 to n - 1, where n is the number of Octofets in the chain. If omitted, targets Octofet nearest to the controller.

digital_write_all(value: List[bool], device: int = 0) -> None

Sets the state ("on" or "off") of all power switches at once.

• value: list of boolean values for all of 8 power switches. One value for one channel: True is "on" and False is "off".
• device: the index of the affected Octofet in the daisy-chain. Ranges from 0 to n - 1, where n is the number of Octofets in the chain. If omitted, targets Octofet nearest to the controller.

get_channel_state(channel: int, device: int = 0) -> bool

Returns the last (i.e., current) set state for one power switch of the device. Returns True if turned on or False otherwise.

• channel: the power switch index. Ranges from 0 to 7.
• device: the index of the affected Octofet in the daisy-chain. Ranges from 0 to n - 1, where n is the number of Octofets in the chain. If omitted, targets Octofet nearest to the controller.

get_all_channel_states(device: int = 0) -> List[bool]

Returns a boolean list of the last (i.e., current) set state for all 8 power switches of the device at once. One value from the list corresponds to one channel: True is "on" and False is "off". The argument device is the index of the affected Octofet in the daisy-chain. Ranges from 0 to n - 1, where n is the number of Octofets in the chain. If omitted, targets Octofet nearest to the controller.