Good evening,
I have been struggling with a lab for school. The lab is using the SPI vi in LabVIEW to connect to the myRIO to the PMOD CLS LCD in order to display stings. This device has worked well for the I2C, TWI, and UART communication protocols. However, for some reason when using the SPI for write operations, it will not output and no combination of the MO jumper locations will result in an output. Per the reference manual, the only jumper needed is on MO0 as the board is a rev. E. I purchased the first CLS through Studica in the embedded systems kit, when that one failed I went though Mouser to purchase another. (I currently live in Germany) So far neither device seems to work.
The interface is via the MOSI and SCLK pins, with 3.3v and ground from the myRIO.
The LabVIEW version used is LabVIEW myRIO Toolkit 2019. The myRIO is a 1900 and was purchased in 2020.
This is the vi that is being used.
Any advice would be greatly appreciated.