PCA9685 (pca9685 v1.0.0)

Driver for PCA9685 based 16 channel, 12 bit PWM driver connected over I2C.

usage

Usage

Add your device to your config like so:

config :pca9685,
  devices: [%{bus: "i2c-1", address: 0x40}]

The properties bus and address are mandatory. You can optionally provide pwm_freq which is the output frequency you'd like to set (in Hz) and oe_pin which is the GPIO pin that you want to use for the output-enable function. Remember that the OE pin is expecting to be driven high to +5V, so won't work on a Raspberry Pi without a level shifter of some kind.

Your devices will be reset and you will be able to drive the outputs with your specified output frequency and duty cycle.

Link to this section Summary

Functions

Connect to a PCA9685 device.

Disconnect a PCA9685 device.

Link to this section Functions

Link to this function

connect(config)

Connect to a PCA9685 device.

Link to this function

disconnect(device_name)

Disconnect a PCA9685 device.