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| config | ||
| lib | ||
| test | ||
| .formatter.exs | ||
| .gitignore | ||
| LICENSE | ||
| mix.exs | ||
| mix.lock | ||
| README.md | ||
| renovate.json | ||
PCA9685
Driver for PCA9685 based 16 channel, 12 bit PWM driver connected over I2C.
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.
Installation
If available in Hex, the package can be installed
by adding pca9685 to your list of dependencies in mix.exs:
def deps do
[
{:pca9685, "~> 0.1.0"}
]
end
Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/pca9685.