I am running the Lua Script example to run the SPI code for the Labjack T4. I have changed it a little bit and I get the error lua: [string "--[[..."]:56.000000: bad argument #1.000000 to 'getn' (table expected, got number). It looks like that needs a table but I don't know why.
Do you know why is this happening?
File Attachment:
.png%3Fitok=PHGBxf6M "EEV Blog Reviews LabJack T7-Pro & Software Tools")
.jpg%3Fitok=B1YcuDFK)
.png%3Fitok=Ybt-OlgU "LabJack + JEDI One Can Create a Powerful Distributed DAQ Ecosystem")
Hello,
You need to use the NameArray functions for SPI_DATA registers since these can (and often) return more than one value (a table). I think your problem stems mainly from this fact.
Any time we use the NameArray calls in our examples it is due to either the register expecting/returning a table or sometimes the ReadNameArray function is used to avoid truncation errors when dealing with 32-bit registers.
See this page for more information about truncation:
https://labjack.com/support/datasheets/t-series/lua-scripting/lua-warnings
Fixed, thanks.