Ok, all weekend I worked on finding chips that could be useful for our project, and gather them and the main information that concerns us, in a Google Doc spreadsheet.
Two kind of architectures are possible. Whether we use a unique chip that is a MCU and a tranceiver, whether we us two separate chip for each of this functions. Of course we will choose the solution that give us the better range with the lower consumption rate. The STM32L has consumption rate very impressive. If we choose the two separate chips architecture, it will be surely the MCU.
If you want to recommend us chips, be my guest, I’ll take a look into it with pleasure.
ROSEly yours !