Instructions

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Espressif Systems
ESP8266
AT Instruction Set
12.
AT+RFPOWER – set maximum value of RF TX Power
This command sets the maximum value of ESP8266 RF TX power, it is not precise.!
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13.
AT+RFVDD – set RF TX Power according to VDD33
This command sets ESP8266 RF TX power according to VDD33. To get the power voltage of ESP8266
VDD3P3, TOUT pin has to be suspended. TOUT pin has to be suspended in order to measure VDD33.
AT+RFPOWER – set RF TX Power
Example
AT+RFPOWER=50
Command
AT+RFPOWER=<TX power>
Response
OK
Parameters
<TX power>
maximum value of RF TX power, range: [0, 82], unit: 0.25dBm
AT+RFVDD – set RF TX power according to VDD33
Command
AT+RFVDD?
Response
+RFVDD:<VDD33>
OK
Parameters
<VDD33>
power voltage of ESP8266 VDD33, unit: 1/1024 V
TOUT pin has to be suspended to measure VDD33.
Command
AT+RFVDD=<VDD33>
Response
OK
Parameters
<VDD33>
power voltage of ESP8266 VDD33, range [1900, 3300]
Command
AT+RFVDD
Response
OK
Espressif Systems  / Friday, July 15, 201619 73