* Added USRT communication mode
* API change for routing messages to secondary interface
* Certification modes through protocol interface
* Fixed bug with safe mode reset counting
* Fixed bug in set frame area causing corrupt RF sample at end
* Fixing bug in x4driver clock initialization not disabling internal decoupling
* Fixing bug in x4driver causing issues when using multiple radars
* Fixing bug in x4driver that could lead to corrupted register reads
* Frame is now correctly normalized between -1 and 1.
* Upper band pulse generator downconversion filter coefficients corrected to not filter out signal energy.
* Data cache and TCM is enabled
* Linker script for 2MB device added (SAMS70Q21 device)
* Naming of function call corrected from x4driver_get_downconvertion to x4driver_get_downconversion
* Supports significantly higher frame rates from X4