i want to get the rssi value from a microcontrollers with getting the xbee register

My name is zaky, i’m student of mechatronics engineering at politeknik elektronika negeri suarabaya, for me x bee is a something new, i never do a research about this before, but now, i do a research about xbee to finish my study in here, my final project have a relationship about xbee, and now i have a trouble with this xbee, iam using the xbee series 1 modul,and i want to get the rssi value but not from the xctu applications, i want to get the rssi value from a microcontrollers with getting the xbee register,if anyone can help me, please answer my question, thankyou very much,

That only requires you to enter command mode and issue the ATDB command after receiving a packet. The other option is to simply use API mode as the RSSI will be provided in the receive packet.