Hello all. I am new to this forum and am seeking some guidance on how to get started with the RFM69(HCW) on the Particle Photon.
So I want to do a project with passive UHF RFID tags (either 433 MHz or 900 MHz) where the Particle Photon searches for a passive tag upon request using the RFM69(HCW). I looked into the RFM69 library on Github, and I couldn’t seem to make out what some of the headers and source code was outlining, but I assume it has to do with network packeting. I also looked through the device’s respective datasheet and found the mapping values but was unsure where the multiplexing process took place.
I plan to make an HTML page for basic command of the Photon. If a “Find device” button is pressed, then the Photon will guide the RFM69 to send a UHF signal in search for the device in question, by transmission and receiving, the tag in which may have its own UID, and this would mean that the RFM69(HCW)'s operation may both require the transmission and receive modes. I would also, because I want to power the Photon and RFM69 with a battery, want to know how to save power with the standby and sleep modes. The UHF tag will be placed on a physical item of choice away from the Photon, and read distance is preferred to be at least 20 feet (though it may be tricky to do with a passive tag despite using UHF signals).
My issue is trying to figure out how to get started with the RFM69 libraries and to see whether the RFM69 would even be compatible with the project vision I have. Any advice on how to get started or other suggestions is welcome.