Forums - RSSI returned by Qca4020

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RSSI returned by Qca4020
flexeos
Join Date: 7 Feb 19
Posts: 12
Posted: Wed, 2019-09-11 01:26
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Hi

In my application (station  only) to evaluate goodness of connection to AP I would like to monitor RSSI

At this purpouse I use this qapi

qapi_WLAN_Get_Param(DEVICE_ID,
__QAPI_WLAN_PARAM_GROUP_WIRELESS,
__QAPI_WLAN_PARAM_GROUP_WIRELESS_RSSI, &rssi, &rssiLen)

And I noticed that returned value is typically comprised from 5 to 50dBm

How can transcode this to a value more adherent to reality (tipically from -20 to -90 dBm)

 

Thanks

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Re: RSSI returned by Qca4020
c_rpedad
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Join Date: 18 Jun 18
Location: San Jose
Posts: 317
Posted: Wed, 2019-09-11 10:40
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You need to add -96 to the reported RSSI to achieve transcoded RSSI in dBm.

Example:
RSSI reading=25 ->  25-96 = -71 dBm 
RSSI reading=64  ->  64-96 = -32 dBm  

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