LMIC get duty cycle timer for channel

[arjanvanb (Arjan)]

@jofleck

but then a Frame without payload would be sent even if no ACK was requested

Determining if an ACK was needed would be your next problem. Peeking into the LMIC code suggests that LMIC.OP_POLL might tell you if an ACK is pending.

OP_POLL     = 0x0010, // send empty UP frame to ACK confirmed DN/fetch more DN data

But if sleeping until the next uplink is due does not give you the additional automatic ACK, then that’s even better of course. Are you saying that the code you posted last indeed achieves that, so no empty ACK is transmitted?

I don’t know if sleeping in the event handler causes any problem; it feels like it’s preventing LMIC from doing proper housekeeping. As for sleeping, beware for rollover of the clock: Lmic plus rfm95w staying awake for long periods - #9 by tomtor.

@jofleck

//Just for debugging to finish the Serial.println(xy) before going to sleep
delay(100);

See also Serial.flush().

@jofleck

The RAK831 supports 8 channels. So is it able to use the 9th TTN RX2 channel

I’d ask that in The hard RAK831 cafe part 3. Also, please see How do I format my forum post? [HowTo]