RSSI on LoRa module

[sgabran]

Hi

We are using the 

the ST library calculates LoRa SNR and RSSI by capturing the readings in register "REG_LR_PKTRSSIVALUE" although there is another register called "REG_LR_RSSIVALUE".

I failed to figure out the difference in contents of those 2 registers.

Any clue ?

thanks

[IIRHO.1 · Accepted solution]

Hello @sgabran  and welcome to ST Community.

The difference between the two registers is that "REG_LR_PKTRSSIVALUE" captures the RSSI value of the last received packet, while "REG_LR_RSSIVALUE" captures the current RSSI value of the receiver.

"REG_LR_PKTRSSIVALUE" is updated only when a packet is received, and it holds the RSSI value of that packet. On the other hand, "REG_LR_RSSIVALUE" is continuously updated with the current RSSI value, regardless of whether a packet is being received or not.

So, if you want to get the RSSI value of the last received packet, you should use "REG_LR_PKTRSSIVALUE". If you want to get the current RSSI value of the receiver, you should use "REG_LR_RSSIVALUE".

I hope this is helpful for you.

Issam