OctofetPi

Raspberry Pi library to interface with the Amperka Octofet 8-channel power switches.

Installation

If you haven’t enabled SPI support in your Raspbian Linux yet, open the terminal and run the following commands:

1. Run sudo raspi-config.
2. Use the down arrow to select 5 Interfacing Options.
3. Arrow down to P4 SPI.
4. Select <Yes> when it asks you to enable SPI.
5. Press <Ok> when it tells you that SPI is enabled.
6. Use the right arrow to select the <Finish> button.
7. Reboot your Raspberry Pi to make the SPI interface appear.

After reboot, log in and enter the following command:

$ ls /dev/spi*

The Pi should respond with:

/dev/spidev0.0  /dev/spidev0.1

These represent SPI devices on chip enable pins 0 and 1, respectively. These pins are hardwired within the Pi.

Then use pip to install the library:

pip3 install octofet

API

Quickstart example:

import time
import octofet

# Create an Octofet object connected to the CE0 pin of the Raspberry Pi board.
octo = octofet.Octofet(0)
# Switch state variable.
state = True

while True:
    # For each switch.
    for switch in range(8):
        # Set the current state for the switch.
        octo.digital_write(switch, state)
        # Wait 1 second.
        time.sleep(1)
    # Toogle state.
    state = not state

See full API reference in API.md.