How does "HW/SW Co-Design QPSK Transmit and Receive Using Analog Devices AD9361/AD9364" configure the register in ad9361?

Hi,

I've been following the example: HW/SW Co-design QPSK Transmitter and Receiver Using Analog Devices AD9361/ AD9364 Hardware Generation Model with the FMCOMMS5 and ZC706 platform. I cannot find the relevant code of configuring ad9361 register through SPI in the generated C code. How does the generated code configure AD9361 on the board?

Answer 1

[Ciaran Toner]

Hi Xiaoxiao, our code does not explicity control the AD9361 by SPI. The AD9361 is configured by using kernel drivers which are provided by ADI.

[Xiaoxiao Liu]

Hi Ciaran, thanks for your reply!

I want to modify the model to realize some other functions. While, I can only find several simple settings in FMCOMMS5 Transmitter/Receiver blocks, like center frequency, gain, etc. Is it possible to configure some other complicated functions (like PLL settings, Multi-Chip Synchronization) through Simulink? Or, is it possible to write data to the specific register in AD9361 through Simulink?

[Xiaoxiao Liu]

And is it possible to download the generated code to SD card, in order to run the code as soon as the device is powered on?

[Ciaran Toner]

Hi Xiaoxiao,

There are advanced ways of doing this, if the property is an IIO attribute.

Over ssh you can run the iio tools on the embedded system. You can then create a function block that invokes these iio tools on the board with some handwritten code.

If you need the code to run on startup you can generate the elf for the code, then copy it the root of the SD card. Finally you should modify the init.sh file to launch the code on startup.