0 Replies Latest reply on Jan 15, 2018 11:14 PM by axel.lin_1746341

    43438/4343W RSSI deviation too large when wifi is on (max-min of same tag might up to 30-40dBm)

    axel.lin_1746341

      Hi,

      We found enable wifi has impact on the received BLE RSSI values.

       

      The test is pretty simple:

      Make the wiced device scan the nearby tags. (Put a tag in fixed position as reference for the test)

      When wifi is disabled, the observed ble tag RSSI looks fine. (use wiced_bt_ble_observe() or wiced_bt_ble_scan())

      When wifi is enabled (either join a AP or wiced device being a AP), the observed ble tag RSSI deviation becomes too large.

      This issue makes the device not able to be used for detecting object location.

       

      Tested on USI-BM22 (43438) and SPIL-N08 (4343W) with latest SDK.