Triggering Frequency Hopping on ADRV9002 Transceiver with External Signal
Hi devs @Middleware & OS
I am working on a project where i want to evaluate the Hopping modes and timings on the ADRV9002 Transceiver.
I use a GUI called TES also known as Argo navis. This is made by Analog devices and communicates with the ZCU102 FPGA running a Linux distro.
I have been able to get the hopping to work using TDD.
I want to use an external trigger such as the rising edge of a wave from a waveform generator to trigger a hop to the next frequency. I have tried using the GPIO pins however the eval board sseem to be outputting a signal, the oscilloscope shows high to low fluctuations (1 & 0) states.
Has anyone got any experience with this kind of work?
How can I trigger hopping with an external trigger?
1 Reply
Hi @UC GEE To trigger frequency hopping on the
ADRV9002 using an external signal, you'll need to configure the GPIO pins correctly to accept the trigger input rather than outputting a signal and in the TES (Argo Navis) GUI, ensure that the GPIO you're using is set as an input in the configuration. Also, double-check that the FPGA is correctly interpreting the external trigger signal from your waveform generator, you may need to configure the rising edge detection on the correct GPIO pin in the FPGA’s logic to initiate the hop.
If you’re seeing unexpected high-to-low fluctuations, it might be due to an incorrect GPIO configuration or noise on the line. Consider adding a pull-up or pull-down resistor to stabilize the signal and ensure your waveform generator is providing a clean, consistent trigger.