Drv FPP Interfaces

The Drv interfaces are a set of .fppi files that define FPP interfaces for driver components to implement. An FPP interface is an FPP file that defines a set of ports. A component that implements an FPP interface must implement handlers for the input ports and has access to the output ports of the interface.

Drv/ByteStreamDriverInterface

The Drv/ByteStreamDriverInterface is an interface for writing and reading to a driver that acts as a byte stream, such as TCP/UDP/UART. The Drv::TcpClient driver implements this interface.

Drv/GpioInterface

The Drv/GpioInterface is an interface for writing and reading a single GPIO bit, and signaling a GPIO interrupt. The Drv::LinuxGpioDriver driver implements this interface.

Drv/I2cInterface

The Drv/I2cInterface is an interface for writing, reading, or writeRead to an I2C device. The Drv::LinuxI2cDriver driver implements this interface.

Drv/SpiInterface

The Drv/SpiInterface is an interface for writing and reading to an SPI device. The Drv::LinuxSpiDriver driver implements this interface.

Drv/TickInterface

The Drv/TickInterface is an interface for outputting a system tick along with a RawTime timestamp. The Svc::LinuxTimer driver is an example of a Linux-based timer that implements this interface.