com.elo.device.peripherals

Interface FTDI

public interface FTDI

This interface provides methods by which an application can interact with the FTDi in an Elo View device

Method Summary

Modifier and Type	Method and Description
void	close(int fd) Close the FTDi device indicated by the file descriptor
java.lang.String[]	getDevicesList() Retrieve a list of USB devices
int	open(java.lang.String path, int baudrate, int flags) Open the FTDi device at the specified path
int	read(int fd, byte[] data) Read any available data from the FTDi device specified by the file descriptor, up to the length of the provided byte array
void	write(int fd, byte[] data, int length) Write data to the FTDi device specified by the file descriptor.

Method Detail

getDevicesList

java.lang.String[] getDevicesList()

Retrieve a list of USB devices

Returns:

array of Linux device names

open

int open(java.lang.String path,
         int baudrate,
         int flags)

Open the FTDi device at the specified path

Parameters:

path - Linux-style path of the device

baudrate - baud rate to use on the FTDi device

flags - flags for device usage, as specified in FTDIFlag

Returns:

device descriptor used to refer to the open device

close

void close(int fd)

Close the FTDi device indicated by the file descriptor

Parameters:

fd - file descriptor returned by open(String, int, int)

read

int read(int fd,
         byte[] data)

Read any available data from the FTDi device specified by the file descriptor, up to the length of the provided byte array

Parameters:

fd - file descriptor to read from

data - byte array to put the data in

Returns:

number of bytes read

write

void write(int fd,
           byte[] data,
           int length)

Write data to the FTDi device specified by the file descriptor.

Parameters:

fd - file descriptor to write to

data - buffer containing the data to write

length - number of bytes to write