Preparing the file that provides the driver functionality About this taskTo prepare the file that provides the driver functionality: Procedure Create a file for the driver functions (for example, your_custom_driver.c). Prepare the driver code. This section includes an example of driver files, An example of a custom driver. Use this example as a template for building your driver code. The driver methods and API functions that you can use are described in Available driver methods and Available API support functions.