I am trying to use a LimeSDR board for some simple digital filtering - initially just performing a phase shift and attenuation. I’ve read in the LMS7002M data sheet (under heading ‘Transceiver Signal Processor’) that there are there are general purpose FIR filters. I would really appreciate some help trying to access them!
I’ve downloaded the LimeSuite software and found the GFIRs in the TxTSP and RxTSP tabs, but when I try to change the coefficients I get the following error: ‘Error reading GFIR coefficients: invalid channel number’. Does anybody know what I am doing wrong? Does limesuiteGUI have a manual that somebody could point me to?
I’ve also come across the Control LimeSDR via SPI using Arduino MCU post. I’ve flashed @Zack’s gateware that he kindly provided to my board and am currently having a play with his example arduino sketch. Could this approach also be successful and allow my to do some digital filtering?
As you can probably tell, this is very new to me, so any help/ pointers gratefully received!
Thanks a lot!
Jane