arduino uno - ESP8266 WiFi signal strength -

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how use at+cwlap in esp8266 wifi signal strength? want signal strength displayed on serial monitor , use in code in arduino ide!

after sending at+cwlap command, esp8266 answer list of available ap's detected.

the format of response like:

+cwlap:<ecn>,<ssid>,<rssi>,<mac>,<freq offset,<freq calibration>

where:

<ecn>: indicates security level, 0 (open) 4 (maximum security level)

<ssid>: it's ssid of ap

<rssi>: it's signal strength, indicated in decibel format (e.g. -70)

<mac>: it's mac address

<ch>: channel

<freq offset>: ut's frequency offset of ap，unit：khz.

<freq calibration>: it's calibration frequency offset

so, <rssi> parameter interested in.

maybe, depending on firmware version of esp8266, it's possible at+cwlap command returns different number of parameters, omitting, example, last four.


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