Other Parts Discussed in Thread: CC2538DK, , CC2538, Z-STACK
I am trying to decrease the RX sensitivity of the CC2538EMK module (of the CC2538DK), in one of the RIOT-OS examples. I have set the RF power to the minimum (-24) to decrease the sending range, but it seems I failed when it comes to the receiving range. I tried decreasing the RX sensitivity from (-97) to (-20) but the node can still sense and receive packets from other nodes, i.e. both will get RSSI from -91 to -96 within a 6m range.
I also tried to set the RFCORE_XREG_RFC_OBS_CTRLx registers to the following but no changes:
RFCORE_XREG_RFC_OBS_CTRL1 = 0x2a;
If it is worth mentioning, decreasing RX sensitivity with Openmote-CC2538 Rev.A1 help reduce the receiving range of the node. I wonder if I am missing something on CC2538EMK.
To make it clear, my goal is to decrease the RX sensitivity to the minimum so that its receiving range matches the TX range. What are the possible parameters/registers needed to do so?