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I have a radio project that I had to put on hold. Now it has to wake up, since the client is getting anxious. I have the boards already made but not populated. It uses an ATSAML11E16 and a Microchip RN2903, LoRaWAN in the 915MHz band. It must ship for the 868MHz band, there being a pin compatible device. This project started off using a Seeed Studio radio; however, that had availability issues as well as being cantankerous.

I'm not fond of radio projects.

The Seeed-based project hit the skids when I tried to take the application software inside the radio. That turned out to be hell on earth. Long term plans are to move the application into a Microchip radio. They give better support than Seeed, so the idea seems feasible.

I used assembly for over fifteen years following graduation in 1972. I've used it on many different processors and architectures. I usually use C, but always use assembly whenever that is best. I fashioned a Arduino-like pin I/O library to be used on a PIC using assembler. Sometimes it is useful to refer to pins using a simple integer rather than the instructions, particularly for table-driven C applications.

I looked up the chip you mentioned. It's $19.10 on Mouser.

I think I was getting the RFM69HCW for around $8.00 or so.

Is it easy to use? There was a lot of overhead to learning how to use the RFM69HCW.