AD9361 Interface Test App (`ad9361_interface_test_app`)

Analog Devices AD9361 RFIC digital interface test application.

Description

This application tests both the transmit and receive paths of an AD9361 based platform. The AD9361 is placed in digital loopback mode which ensures the data transfer between the FPGA and the AD9361 Transceiver IC are valid at various sampling rates. The application is comprised of two components ad9361_prbs_gen and ad9361_prbs_test. The pseudo-random bit stream (prbs) generator and tester ensure that all 12-bits sent out of the DAC (digital to analog converter) are received at the ADC (analog to digital converter) without data corruption. Both components are HDL components and an ACI application is used to command and control the workers through their properties. A script is used to cycle between various sampling rates and reports whether the tester received valid (pass) or invalid (fail) results.

Hardware Portability

This application can be run on any AD9361 based platform as long ad you have the appropriate HDL assembly built for that platform. The first platform to support this application is located in ocpi.osp.e3xx project.

Execution

Prerequisites

Prior to running the application the following prerequisites apply

platform needs to have been installed
OpenCPI assets related to this application have been built and deployed on the platform (ACI application, hdl assembly, drc, script)
execute the application on the embedded platform

Commands(s)

The application can be run using the included script named “run_app_multiple_times.sh”

$ cd /home/root/ad9361_interface_test_app
$ ./run_app_multiple_times.sh

Verification

The script will printout results during execution, they will look something like this:

% ./run_app_multiple_times.sh

Running interface test at sample rates: 4.0 7.0 8.0 10.0 15.0 20.0 30.0
Each test repeated 10 times
Key: '+' = PASS, '-' = FAIL

Sample rate: 4.0 MHz [++++++++++]
Results: 10 / 10 passed

Sample rate: 7.0 MHz [++++++++++]
Results: 10 / 10 passed

Sample rate: 8.0 MHz [++++++++++]
Results: 10 / 10 passed

Sample rate: 10.0 MHz [++++++++++]
Results: 10 / 10 passed

Sample rate: 15.0 MHz [++++++++++]
Results: 10 / 10 passed

Sample rate: 20.0 MHz [++++++++++]
Results: 10 / 10 passed

Sample rate: 30.0 MHz [++++++++++]
Results: 10 / 10 passed

Overal results: 70 / 70 passed

You can modify the run_app_multiple_times script to adjust sample rates and number of times to repeat.

AD9361 Interface Test App (ad9361_interface_test_app)