ESP8266 Community Forum

Hi,

in my sketch I use

long rssi = WiFi.RSSI();

to get the RSSI of the actual connection in STA mode. This seems to work ok from time to time but sometimes I get a positiv value. Please find the attached grafana chart. As far as I understand RSSI this should not happen? I expected the RSSI range to rearch from -100 to 0. Did I get something wrong? Can someboby point me in the right direction to understand the problem? Or fix it, if it is an error.

Thank you.

I've used Wifi.RSSI() and never seen it return a postive value. (Here's one publishing it the last 24 hours with only negative values).

Maybe a code bug? It returns int32_t not long, maybe thats it?

The SDK (which I assume the Arduino code is calling) documents the wifi_station_get_rssi(void) function thus:



The positive values on your graph looks suspiciously close to 31 to me.

Thank you. That is indeed the case. I returns 31, which is the error-code. I promise to RTFM the next time before I ask I'll have a look why the call fails. Maybe it is a timing issue. Or I'll just repeate querying the RSSI until I don't get "31".