Keithley 2657A - File System Navigation

Model 2657A High Power System SourceMeter® Instrument Reference Manual Section 2: General operation
2657A-901-01 Rev. B/December 2012 2-71
Figure 23: USB port
File system navigation
The Model 2657A can use commands from the Lua fs library to navigate and list files that are
available on a flash drive. These Lua commands are in the fs command group in the instrument.
The fs commands make the file system of any given node available to the entire TSP-Link
®
system.
For example, you can use the command node[5].fs.readdir(".") to read the contents of the
current working directory on node 5.
The root folder of the USB flash drive has the absolute path:
"/usb1/"
You can use either the slash (/) or backslash (\) as a directory separator. However, the backslash is
also used as an escape character, so if you use it as a directory separator, you will generally need to
use a double backslash (\\) when you are creating scripts or sending commands to the instrument.
The instrument supports the following Lua fs commands:
fs.chdir() (on page 7-94)
fs.cwd()
(on page 7-94)
fs.is_dir()
(on page 7-94)
fs.is_file()
(on page 7-95)
fs.mkdir()
(on page 7-95)
fs.readdir()
(on page 7-96)
fs.rmdir()
(on page 7-96)
The following Lua fs commands are not supported at this time:
fs.chmod()
fs.chown()
fs.stat()
ter
®
NOTE