I have set the PSM to sleep for 1 minute and wake up for 1 second then go to sleep. There is nothing occurring in the while loop.
I have checked the request with AT+CPSMS? and I get 1 minute TAU time (see screenshot)
However, the device stays 4 minutes in sleep and wakes up for 6 seconds. I have tried other settings, but the PSM TAU time stays at 4 minutes.
Do you know why?
Here is another example, setting PSM to 15 minutes, but it reverts to 4 mins.