Reading Digital Pulse with PCIe 6509

[kennycaldas]

Hello everyone,

I'm trying to decode an Infrared signal from a remote control using the PCIe 6509, but I'm having no luck doing that. It seems that when I'm using the Change Detection VI it does generate the interrupt, but it can't produce it fast enough to create a pattern to use with the Daqmx Read VI. Does anyone know if something like this is possible? The idea is to make the PCIe 6509 generate a digital output signal for each differente key on the controller.

Thanks!

Kenny

[crossrulz]

The 6509 is a software timed DIO.  What you need is either a high speed DIO (like the PCIe-6535), an FPGA card (like the PCIe-7841R), or use an Analog Input on a DAQ board and process the data.  The FPGA boards require LabVIEW FPGA and are on the expensive side, but they are very useful for waveform processing in the hardware instead of trying to process it all in a slow OS.

[kennycaldas]

Thanks crossrulz!

So basically if I want to use the PCIe 6509 in my project the only function it will be capable of doing will be control my outputs, right?
Then, instead of buying another daq board, do you think a cheaper solution would be using a microprocessor, like the atmega, to do the decoding and then communicate with LabVIEW?

Thanks again!

Kenny

[crossrulz · Accepted solution]

Arduinos are often used.  There are a few software toolkits out there like LIFA and Lynx.  Then you just need a serial port in able to communicate.