I recently finished prototyping a LoRa RFM95 transceiver with an Arduino Uno using the RadioHead RFM95 library. I am now transitioning to designing a PCB for my project and chose a PIC16F18446 microcontroller based on my other needs.
I would like to know if there is any way to make the RadioHead Library work with the PIC? If not, please point me towards how I should go about programming the PIC to talk to the RFM95/SX1276 module. Any help would be very useful.
Best Answer
Passing on responses:
Brent Brown said:
Can't help with RadioHead library sorry, but if you haven't seen them already Microchip has LoRaWAN modules that incorporate a PIC18LF46K22, SX1276 radio chip, crystals, EEPROM with ID, antenna matching networks etc. See the RN2483 (dual freq 433 & 868MHz) and RN2903 (915MHz). Cost is not too high, probably not much more than what you can buy the individual components for, and it's in a nice small metal shielded module.
https://www.microchip.com/wwwproducts/en/RN2483 https://www.microchip.com/wwwproducts/en/RN2903
https://www.scoop.it/topic/high-temperaure-wireless/p/4071285298/2016/11/06/micr ochip-rn2483-teardown
You can re-flash the firmware on these to run anything you like (ICSP I/O pins come out on external pads), but they come with a pre-qualified LoRaWAN application which could well be suitable out of the box. The source code is also published, so it could be alternate pathway for you.
& Roger Morrell said:
The Radio Head library can be made to work with that model PIC - I did it for a specialized application. Unfortunately the work I did cannot be easily shared and I'm over committed at the moment.
I use the CCS C compiler - PICC which is a little different than the Microchip one.
I think there is a version of the RadioHead source on the HopeRf site.