Xtensa Xplorer for Windows V10.1.11
DSP Configuration for Windows (newlib) V10.1.11
Note: The generated license key is for this version, no for the last version available
Using dsp_hello_world_usart project
For the ARM side, I used the dsp_hello_world_usart_cm33 project from the mcuxpresso SDK examples.
For the DSP side, I did unzip the downloaded SDK for the RT685 and opened this path in Xtensa Xplore: \boards\mimxrt685audevk\dsp_examples\hello_world_usart\hifi4\xtensa
I did it this way because it was the sweetiest way I found to load the projects to their corresponding IDE.
Once I was able to build both projects, I copied and pasted the output binary files of the Xtensa project (hello_world_usart\hifi4\xtensa\binary) to the path where the mcuxpreso project expects for this binary files (dsp_binary folder)
Build the MCUXPresso project and load the app :)