Software update: AirStack 0.5.6

Deepwave has released AirStack 0.5.6. This is the software collection for her AIR-T, a software-defined radio board with an Nvidia Jetson TX2 processor, a Xilinx Artix-7 FPGA and an Analog Devices AD9371 wideband RF transceiver on board. SDR is a system for radio communications where the implementation takes place in software, the signal processing is then carried out by the CPU, GPU, FPGA, etc. and is therefore ‘easy’ to adapt without the need to develop new hardware. At the GPU Technology conference, Deepwave has an extensive presentation about the AIR-T. Also the documentation about the AIR-T and AirStack provides a lot of information about the possibilities. The announcement of this release is as follows:

AirStack 0.5.6 Released

AirStack 0.5.6 is a minor release that brings multichannel synchronization to all sample rates when using the triggering functionality. Previously, this functionality was only available at the full 125 MSPS data rate. We hope that this fix alleviates problems customers were experiencing with non-deterministic hardware triggering.

Also, the Deepwave team would like to announce that AirStack 0.6 will be released sometime later this summer or early fall. Features in AirStack 0.6 will focus on support for TX triggering as well as support for timed streams (ie, starting an RX capture at a particular time or transmitting a signal at a particular time). We appreciate your patience regarding support for these long requested features.

Patch Notes

• Reset firmware sample rate filters correctly to ensure deterministic timing when doing hardware triggering.

Please note that upgrading from AirStack 0.5.0+ does not require a complete re-flash of the AIR-T. Upgrading from earlier releases does require a re-flash, however.

AirStack 0.5.5 Released

The Deepwave Digital team is happy to announce the release of AirStack 0.5.5, a minor release that addresses several bugs and increases frequency tuning performance. This upgrade may be performed in minutes without re-imaging the AIR-T system.

Patch Notes

• Corrected sample rate settings for AIR-T models 7201 and 8201 for certain corner cases.
• Fixed the sample rate reported by getSampleRate() to be the actual sample rate applied by the device. Recommend calling getSampleRate() after setSampleRate() to check what sample rate was actually applied due to the supported precision of the firmware.
• Dramatically reduced the amount of time to apply a new frequency setting (roughly 200–350 ms reduction in tuning time based on use case).
• Fixed an issue where an exception would be raised when attempting to set the frequency while a stream was recovering from a data transfer error.
• Corrected an issue where an initial set of samples would be corrupted when changing frequency with an active stream.
• Report the master clock rate of the device based on the device clock of the AD9371.
• Improve signal integrity of AIR8201-B model by disabling the low-band reference clock when low-band is not active.