Hi all. Im trying to convert in dBm the values obtained from the app:
<http://tinyos.stanford.edu/tinyos-wiki/index.php/Rssi_Demo> In my case appears the next values: Rssi Message received from node 1: Rssi = 40 Rssi Message received from node 1: Rssi = 41 Rssi Message received from node 1: Rssi = 40 Rssi Message received from node 1: Rssi = 40 Rssi Message received from node 1: Rssi = 41 Because is very close both motes TelosB (Sending Mote and Rssi Base ) In the TinyOS tutorial appears the next: "...that this app prints only the raw RSSI values ..." On the other hand I have the Data sheet of the RF Transceiver CC2420: <http://web.stanford.edu/class/cs244e/papers/cc2420.pdf> But is not clear to me How I can do the conversion from raw RSSI to dBm. I read, someone in the TinyOS mail-list, who wrote that is only necessary substract -45: < https://www.millennium.berkeley.edu/pipermail/tinyos-help/2014-March/058162.html > But I suppose is not a exact calculation. I'll be grateful if somebody can generously explain how is the correct way to convert raw RSSI values from a TelosB to a dBm. Thanks in advance. Alex. Date: Mon, 3 Mar 2014 12:13:27 +0530 From: ashok <[email protected]> Subject: [Tinyos-help] RSSI DEMO To: [email protected] Message-ID: <caks3p-d4gxw_djjvc9hwmk-+x_zki+hnvzcr+c2ts2nkukg...@mail.gmail.com> Content-Type: text/plain; charset="iso-8859-1" Dear All, I am getting RSSI value in tinyos like: Rssi Message received from node 1: Rssi = -14 Rssi Message received from node 1: Rssi = -1 Rssi Message received from node 1: Rssi = 2 Rssi Message received from node 1: Rssi = -2 Rssi Message received from node 1: Rssi = 2 Rssi Message received from node 1: Rssi = 0 Rssi Message received from node 1: Rssi = -2 Rssi Message received from node 1: Rssi = 2 Rssi Message received from node 1: Rssi = 2 and I want to conform that is this value is in Dbm? if not than how can i convert it? regards, -ashok
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