Introduction

A board definition consists of a driver and some optional pin definitions. We provide the predefined boards, drivers and pin definitions with the help of some global objects: e.g. LyratV43. The available objects can be found in the Variables section of the documentation.

You can easily define some new boards by assigning a existing driver object and optionally add your pin definitions.

The pin definitions are used as follows:

• to initialize I2C (which is used to configure the codecs)
• to initialize SPI (which is e.g. used for a SD drive)
• to provide the I2S pin information e.g. to the AudioTools
• to provide and setup additional pins for LEDs, buttons etc

The pin definitions are used as a kind of repository that is used by the driver, the audio-tools and that can be used by your application as well.