Hello, I’m using BC92 in one of my products. The issue is that most of the time it won’t go to deep sleep (or any other sleep mode) (neither in PSM nor in eDRX). When I turn on the NBIOTEVENT URC, it will say +PSM_ENTER when entering sleep and +PSM_EXIT when I wake up the modem pulling the PSM_EINT low, which is the correct behaviour. When I turn on the sleep indication URC, I can see that the modem sends +PSM_ENTER but not +QATSLEEP. What is much worse is that when it gets to this weird state it will start transmitting/drawing a lot of current for ~70s, then it idles for ~285s and the cycle repeats. It sometimes corrects itself when I use the QISEND command and send a packet to a UDP port on our server.
These are the relevant AT commands used to initialize the modem:
AT+CPSMS=1,“01000111”,“00001010”
AT+CEDRXS=1,5,“1100”
AT+QSCLK=1
All these values are accepted by the network/operator.
Any help would be appreciated.