Hello,
I'm working with Distance Measurement (nrf_dm) using the NORAB126 module on nRF Connect SDK v2.9.0 and nRF Connect SDK v3.0.1.
I'm facing an issue where, occasionally and randomly, the devices stop performing ranging between them. Once this happens, the only way to resume distance measurements is by restarting one or both devices. I've tried adjusting the following configuration parameters, but the problem persists:
-
CONFIG_DM_INITIATOR_DELAY_US -
CONFIG_DM_MIN_TIME_BETWEEN_TIMESLOTS_US -
CONFIG_DM_TIMESLOT_QUEUE_LENGTH -
CONFIG_DM_TIMESLOT_QUEUE_COUNT_SAME_PEER -
CONFIG_DM_RANGING_OFFSET_US
Despite these changes, the behavior remains the same — ranging between peers stops unexpectedly and only resumes after a reset.
Additionally, I noticed that the distance measurements occur at around 4 times per second when the devices are close. However, the measurement frequency appears to vary randomly.
My questions are:
-
Is there a known issue that could explain why ranging suddenly stops and only recovers after restarting the device(s)?
-
Is there a way to set or control the number of distance measurements per second (i.e., define a fixed ranging frequency)?
Any insights or recommendations would be greatly appreciated.