Our roadmap at the moment is extremely full, and the R5 is not yet on it, but that is not to say there won’t be a port once we are over the immediate hump of work - having said that we are permanently on a hump of work :o) It may be that the R4 code works on the R5 too.
The R4 ports in general need some maintenance work anyway.
I can imagine that.
Had a look in the TI Hercules forum and it seems they are working on a R5 port for HALCoGen. And as you say, the R4 may already work.
I’m afraid all the sample projects for the RMxx parts are those available in the FreeRTOS .zip file download. You may be able to find an example somewhere other than the FreeRTOS website though (maybe even the FreeRTOS Interactive site) but I am not personally aware of any.
If the cores are the same in the RM48 and RM57 then the following page may provide some help as the same FreeRTOS port could be used.