General named pipe (fifo) driver Each pipe is comprised of two half-duplex fifos, one for reading from the client and one for writing to them. To activate a specific pipe peripheral, define flag USE_PIPEX_WRITER with the file path to the location where paparazzi would wrtie to and USE_PIPEX_READER for the file location where it should read from, where X is your pipe peripheral number. You can also configure the size of the incoming and outgoing buffer using PIPE_RX_BUFFER_SIZE and PIPE_TX_BUFFER_SIZE mcu