CC2530: sequence number and rssi

Thanks Ryan, in sequence  number case, what does this value refers to in receiver??? The sequence number that sent by transmitter in zcl send command or the number of total recieved packets from all devices?

The sequence number is sent by transmitter in zcl send command.

Tnx sir

I saw the links and realized I had to check LQI but I looked at the value of both variables(LQI , rssi) in the memory window, and I found that these values are constant with a change in distance!!!

Yes, you should convert LQI to RSSI as I know.

But the value of the LQI is constant at different distances between transmitter and receiver!!!

How do you check LQI?

I added lqi value to watch window and check it there and in the memory window too. Besides that I send it by serial communication to pc and watch it...

The value remains the same even when the distance gets longer between the nodes!!! Or sometimes it shows meaning less values and jumps between them... like 12, 20 etc

How far do you change the distance between the nodes? And do you let device send message to receiver that you watch LQI value after you change distance?

I change the distance from less than a meter to about 50 meters or but the result is the same...

Yes, device sends a packet periodically.

Do you have router between your sender and receiver?

no there isn't any router... just two transmitter and receiver nodes 

I see no reason why LQI doesn’t change. I suggest you to use Ubiqua to check over the air signal strength at the same time when you check it inside your code.

Is it possible to use smart rf to check this? Can it be helpful in some way? If its yes, how?

It might be possible to use SmartRF Studio to receive packets but it will be too noisy to interpret messages. I still suggest you to use Ubiqua.

thanks sir. 

I have checked the RSSI value by smart rf and it showed 0x4C and the second time under the same circumstances the value in the watch window was 0x12. what is the difference? what is wrong with that? 

I cannot judge by such descriptions. From my point of view and suggestion, only Ubiqua can match what you send from sender to receiver and what the RSSI is.

Distance is not the only factor that determines RSSI, other 802.15.4 IEEE channel noise and Wi-Fi interference could also affect readings.

Regards,
Ryan