Happy New Year gentlemen.
LoRaTracker: Yes my endeavor is a simple point to point duplex using one SX1279 as a transmitter that is 0.25 Km from a second SX1279 that is serving as the receiver. I’m employing a LoRa duplex sketch developed by Tom Igoe and Sandeep Mistry from Github and it works great thus I’m not implementing LoRaWAN for the time being. What I am hoping to accomplish is to increase the amount of time that the receiver can operate using two AA batteries which is why I became so interested in the CAD option. I did read your site’s recent posting on whether there was much to gain from switching modes given that you measured large power draws just from switching between idle and full receive modes. But Semtech’s description about CAD and lower power consumption had me convinced that this was a valid approach for my effort to increase receiver’s battery lifetime.
Arjan: Totally follow your logic on the timing. Let’s assume that I “know” that the transmitter will issue a signal once every hour and that I want my receiver to go into single Receive mode to detect that signal. In that simple scenario, what would I use for Timer1? Would I need to connect an external clock to my receiver and specify values for Timer1? Or is Timer1 a function that is solely specific to LoRaWAN?
BoRRoZ: You stated earlier that I (" So YOU must take ‘appropriate’ action…") must specify the action when using a syncaddress, preamble, or payload ready interrupt. My duplex sketch (see highlighted text in attached PDF) does use a destination address to wake the SX1279. Does my use of the destination address to wake the receiver serve as the ‘appropriate’ action that you are referencing? If so does that mean that mean I could replace destination address with the preamble (aka Timer1)?
Duplex_Receiver_LoRa.pdf (75.1 KB)
Much appreciate the assistance from everyone on this.