3 Replies Latest reply on Jan 16, 2015 3:36 PM by grga

    Equivalent of a radiotap header to extract rssi

    marcoeg

      I am using a WICED module in monitor mode filtering for probe requests. I can capture the 802.11 probe request frames but I could not figure out how to obtain the information - specifically the SSI signal - as typically found in the radiotap header.

       

      I understand radiotap is not a standard, and is only a functionality of the driver. Nevertheless, I would appreciate any information on how I can extract the SSI fields in some way through the SDK. I am comfortable in using non-standard and not documented functions, as I am sure such information must be available. I had to resort to non documented functions in the SDK to enable and take advantage of monitor mode in the first place.

       

      Unfortunately, wiced_get_rssi() inside a capture callback host_network_process_raw_packet(), times out. I tried also disabling any filters and in running it from another thread, but it doesn't seem to be working in monitor mode. Perhaps accessing the radio registers is what is needed. I am specifically interested in the RSSI only.

       

      Thanks in advance.

       

      -Marco G.