I've picked up using this again for another project - what I'm doing is having a really nice reconfigurable data logger that uses DAQmx (amongst other things) and now I need to log data from a 9148 with some modules in it.
One of the things that's really cool is that I can read the list of available controls/indicators from the bitfile and use this to show the user which signals are available and which ones they are interested in. The really useful part, I hope, is that later down the line I can develop other FPGA VIs for different module configurations and load them onto the 9148.
The only problem though, which is where I come unstuck is the fact that I cannot pass fixed point numbers.
I don't *fully* understand how the integer->FXP functions work but what I have done in my previous project was to do FXP to Integer on the FPGA and then Integer to FXP (using the same FXP representation as the I/O node on the FPGA). The problem is that different modules have different FXP representations (in my current FPGA VI I have <+/-,24,-4>;<+/-,24,-2>;<+,18,3>;<+16,3>) which when converted to Integers produce different formats - e.g. I32, U16, U32 and these become my controls/indicators on the front panel of the FPGA VI.
Do I need to know the fixed point representation for each control/indicator on both sides (FPGA & PC)? In an ideal situation I would want to look at the indicator type information (e.g. U32) and then use the I/O node name (e.g. AI0, AI1 etc.) to indicate that I need to convert to an FXP on the windows side.
The other question I guess is, will FXP's (and I guess SGL...as that's now available in LV FPGA if I remember correctly) ever be supported natively with this toolkit?
