2470 High Voltage SourceMeter Instrument Reference Manual
Section 14: TSP command reference
2470-901-01 Rev. A /
May
2019
14-79
file.open()
This function opens a file on the USB flash drive for later reference.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Function
No
Usage
fileNumber
= file.open("
fileName
",
accessType
)
fileNumber
A number identifying the open file that you use with other file commands to write,
read, flush, or close the file after opening
fileName
A string that contains the file name to open, including the full path of file
accessType
The type of action to do:
Append the file:
file.MODE_APPEND
Read the file:
file.MODE_READ
Write to the file:
file.MODE_WRITE
Details
The path to the file to open must be absolute.
The root folder of the USB flash drive has the following absolute path:
"/usb1/"
Example
file_num = file.open("/usb1/testfile.txt", file.MODE_WRITE)
if file_num != nil then
file.write(file_num, "This is my test file")
file.close(file_num)
end
Opens file
testfile.txt
for writing. If no errors were found while opening, writes
This is my test file
and closes the file.
Also see
None
