@type driver_t() :: {driver :: module(), config :: keyword()}

The structure to hold the driver related data.

It consists of tuples with:

• driver: Which modules should get loaded. Each module usually should have a default configuration, which can then be overwritten with specific settings
• config: a keyword list to modify the default settings. Each module has their own set of settings. You need to check the driver module documentation for allowed settings

Note: You can specify a driver module several times and give them different settings.

  This allows for example to send the same data to two different SPI ports.

Example:

{Fledex.Driver.Impl.Kino, update_freq: 10 }

@type drivers_t() :: [driver_t()]

This structure is for holding several driver_t structures.