AT Commands reference

AT commands are useful to communicate with the device from third party peripherals. A good use case is implememting a HMI using ESPHome and LVGL which not only offers a nice touch screen interface, but offers another way to integrate the EVSE with Home Assistant.

AT commands support can be enabled in serial settings, any serial interface can be used for this.

Note

Only one interface can work in AT commands mode.

Basic commands

When AT Commands module is enabled, at startup, the device will print automatically on the line the RDY message once, to inform the client that communication can start. Since this mostly happens when the board booted up, it can be useful to detect on the client side a freshly booted state.

AT

Check that the communication is working properly.

Command	Return Value	Return Code
AT	-	OK

ATE

Echo back to the client the AT command input (see the entered commands on a serial console terminal).

Command	Return Value	Return Code
ATE<echo>	-	OK

Parameter	Access	Type	Description
<echo>	WO	uint8	Echo commands (0 or 1)

AT+CMD

List all the supported AT commands by the ESP32-EVSE device.

Command	Return Value	Return Code
AT+CMD	List of commands	OK

Example:

AT+CMD

ATE0

ATE1

AT+RST

AT+CHIP?
AT+CHIP=?

AT+HEAP?
AT+HEAP=?

  ...

OK

AT+SUB

Subscribe to periodic response to other commands, let ESP32-EVSE send responses automatically, repeatedly.

Command	Return Value	Return Code
AT+SUB=<command>,<period>	-	OK | ERROR
AT+SUB=?	Command description	OK

Parameter	Access	Type	Description
<command>	W	string	AT command name (max length 32)
<period>	W	uint32	Time period in ms

Example:

AT+SUB="+ENABLE",1000
OK
AT+SUB="+AVAILABLE",2000
OK
+ENABLE=1
+ENABLE=1
+AVAILABLE=1
+ENABLE=1
+ENABLE=1
+AVAILABLE=1

Note

Only works with read commands (not write, test or execute). When you subscribe multiple times to the same command, only the period will be updated. AT commands task run in a 100ms delay loop, setting any period of lower value has no effect.

AT+UNSUB

Unsubscribe periodical reading of a certain command.

Command	Return Value	Return Code
AT+UNSUB=<command>	-	OK
AT+UNSUB=?	Command description	OK

Parameter	Access	Type	Description
<command>	W	string	AT command name (max length 32)

Example:

AT+SUB="+ENABLE",1000
OK
AT+SUB="+AVAILABLE",1000
OK
+ENABLE=1
+AVAILABLE=1
+ENABLE=1
+AVAILABLE=1
AT+UNSUB="+ENABLE"
+AVAILABLE=1
+AVAILABLE=1

AT+SUB="+ENABLE",1000
OK
AT+SUB="+AVAILABLE",1000
OK
+ENABLE=1
+AVAILABLE=1
AT+UNSUB=""

Note

Call with empty string removes all command subscriptions.

System commands

AT+RST

Restart ESP32-EVSE device.

Command	Return Value	Return Code
AT+RST	-	OK

AT+UPTIME

Print time since last boot, in seconds.

Command	Return Value	Return Code
AT+UPTIME?	+UPTIME=<uptime>	OK
AT+UPTIME=?	Command description	OK

Parameter	Access	Type	Description
<time>	RW	uint32	Time in s

AT+CHIP

Print ESP32 chip model information.

Command	Return Value	Return Code
AT+CHIP?	+CHIP=<model>,<cores>,<revision>	OK
AT+CHIP=?	Command description	OK

Parameter	Access	Type	Description
<model>	RO	string	Name of model
<cores>	RO	uint8	Number of CPU cores
<revision>	RO	uint16	Chip revision number (in format MXX; where M - wafer major version, XX - wafer minor version)

Example:

AT+CHIP?
+CHIP="esp32",2,100
OK

AT+HEAP

Print memory heap status.

Command	Return Value	Return Code
AT+HEAP?	+HEAP=<used>,<total>	OK
AT+HEAP=?	Command description	OK

Parameter	Access	Type	Description
<used>	RO	uint32	Used heap size in bytes
<total>	RO	uint32	Total heap size in bytes

Example:

AT+HEAP?
+HEAP=115992,308884
OK

AT+VER

Print ESP32-EVSE firmware version.

Command	Return Value	Return Code
AT+VER?	+VER=<version>	OK
AT+VER=?	Command description	OK

Parameter	Access	Type	Description
<version>	RO	string	Version, commonly in format major.minor.bugfix

Example:

AT+VER?
+VER="v2.0.0"
OK

AT+IDFVER

Print ESP-IDF version that was used to build the firmware.

Command	Return Value	Return Code
AT+IDFVER?	+IDFVER=<version>	OK
AT+IDFVER=?	Command description	OK

Parameter	Access	Type	Description
<version>	RO	string	ESP-IDF version

Example:

AT+IDFVER?
+IDFVER="v5.5"
OK

AT+BUILDTIME

Print the datetime of build.

Command	Return Value	Return Code
AT+BUILDTIME?	+BUILDTIME=<date>,<time>	OK
AT+BUILDTIME=?	Command description	OK

Parameter	Access	Type	Description
<date>	RO	string	Compile date
<time>	RO	string	Compile time

Example:

AT+BUILDTIME?
+BUILDTIME="Aug 20 2025","22:13:07"
OK

AT+TEMP

Print the measured temperature values.

Command	Return Value	Return Code
AT+TEMP?	+TEMP=<count>,<high>,<low>	OK
AT+TEMP=?	Command description	OK

Parameter	Access	Type	Description
<count>	RO	uint8	Count of temperature sensors
<high>	RO	int32	Highest temperature in dg.C*100
<low>	RO	int32	Lowest temperature in dg.C*100

Example:

AT+TEMP?
+TEMP=2,2965,2887
OK

AT+TEMP?
+TEMP=1,2875,2875
OK

AT+TEMP?
+TEMP=0,0,0
OK

Note

In the example above: first reading has 2 temperature sensors; second reading has 1 temperature sensor; last reading has no temperature sensor.

AT+TZ

Read/write timezone name.

Command	Return Value	Return Code
AT+TZ?	+TZ=<timezone>	OK
AT+TZ=<timezone>	-	OK | ERROR
AT+TZ=?	Command description	OK

Parameter	Access	Type	Description
<timezone>	RW	string	Timezone name (max length 32)

Example:

AT+TZ?
+TZ="Etc/UTC"
OK

AT+TZ="Europe/Prague"
OK

AT+TZRULE

Read Posix timezone string.

Command	Return Value	Return Code
AT+TZRULE?	+TZRULE=<timezone_rule>	OK
AT+TZRULE=?	Command description	OK

Parameter	Access	Type	Description
<timezone_rule>	RO	string	Posix timezone string (max length 32)

Example:

AT+TZRULE?
+TZRULE="CET-1CEST,M3.5.0,M10.5.0/3"
OK

AT+TIME

Read/write epoch Unix timestamp (write to set the system time manually).

Command	Return Value	Return Code
AT+TIME?	+TIME=<time>	OK
AT+TIME=<time>	-	OK
AT+TIME=?	Command description	OK

Parameter	Access	Type	Description
<time>	RW	uint64	Epoch time in s

Example:

AT+TIME?
+TIME=1756129834
OK

EVSE commands

AT+STATE

Print ESP32-EVSE internal state according to J1772 standard.

Command	Return Value	Return Code
AT+STATE?	+STATE=<state>	OK
AT+STATE=?	Command description	OK

Parameter	Access	Type	Description
<state>	RO	uint8	IEC 61851 / J1772 state: A=0, B1=1, B2=2, C1=3, C2=4, D1=5, D2=6, E=7, F=8. See State machine

Example:

AT+STATE?
+STATE=4
OK

AT+ERROR

Print ESP32-EVSE error bits in decimal value (use bitmask to decode).

Command	Return Value	Return Code
AT+ERROR?	+ERROR=<error>	OK
AT+ERROR=?	Command description	OK

Parameter	Access	Type	Description
<error>	RO	uint32	EVSE error bit

Example:

AT+ERROR?
+ERROR=0
OK

AT+ENABLE

Read/write ESP32-EVSE charging enabled setting.

Command	Return Value	Return Code
AT+ENABLE?	+ENABLE=<enable>	OK
AT+ENABLE=<enable>	-	OK
AT+ENABLE=?	Command description	OK

Parameter	Access	Type	Description
<enable>	RW	uint8	Charger enabled (0 or 1)

Example:

AT+ENABLE?
+ENABLE=0
OK

AT+ENABLE=1
OK

AT+AVAILABLE

Read/write ESP32-EVSE charging available setting (F state).

Command	Return Value	Return Code
AT+AVAILABLE?	+AVAILABLE=<available>	OK
AT+AVAILABLE=<available>	-	OK
AT+AVAILABLE=?	Command description	OK

Parameter	Access	Type	Description
<available>	RW	uint8	Charger available (0 or 1)

Example:

AT+AVAILABLE?
+AVAILABLE=0
OK

Note

When ESP32-EVSE is set to be available=0 it doesn't mean that state will always be F. Error can override the state to E.

AT+REQAUTH

Read/write ESP32-EVSE require authorization option before starting to charge.

Command	Return Value	Return Code
AT+REQAUTH?	+REQAUTH=<require_auth>	OK
AT+REQAUTH=<require_auth>	-	OK
AT+REQAUTH=?	Command description	OK

Parameter	Access	Type	Description
<require_auth>	RW	uint8	Authorization required (0 or 1)

Example:

AT+REQAUTH?
+REQAUTH=0
OK

AT+PENDAUTH

Print the state of the ESP32-EVSE pending authorization bit.

Command	Return Value	Return Code
AT+PENDAUTH?	+PENDAUTH=<pending_auth>	OK
AT+PENDAUTH=?	Command description	OK

Parameter	Access	Type	Description
<pending_auth>	RO	uint8	Authorization pending (0 or 1)

Example:

AT+PENDAUTH?
+PENDAUTH=1
OK

AT+AUTH

This command is to confirm the pending authorization, and allow the system to charge.

Command	Return Value	Return Code
AT+AUTH	---	OK

Example:

AT+AUTH
OK

AT+CHCUR

Read/write the actual charging current value. Value must be in range 6A - MAXCHCUR.

Command	Return Value	Return Code
AT+CHCUR?	+CHCUR=<current>	OK
AT+CHCUR=<current>	-	OK | ERROR
AT+CHCUR=?	Command description	OK

Parameter	Access	Type	Description
<current>	RW	uint16	Charging current in A*10

Example:

AT+CHCUR?
+CHCUR=60
OK

AT+CHCUR=20
ERROR

Note

The example above returns error because value 2A is out of range (6A is lower limit)

AT+DEFCHCUR

Read/write default charging current. Value must be in range 6A - MAXCHCUR.

Command	Return Value	Return Code
AT+DEFCHCUR?	+DEFCHCUR=<current>	OK
AT+DEFCHCUR=<current>	-	OK | ERROR
AT+DEFCHCUR=?	Command description	OK

Parameter	Access	Type	Description
<current>	RW	uint16	Charging current in A*10

Example:

AT+DEFCHCUR?
+DEFCHCUR=320
OK

AT+MAXCHCUR

Read/write max charging current. Value must be in range 6A - 63A.

Command	Return Value	Return Code
AT+MAXCHCUR?	+MAXCHCUR=<current>	OK
AT+MAXCHCUR=<current>	-	OK | ERROR
AT+MAXCHCUR=?	Command description	OK

Parameter	Access	Type	Description
<current>	RW	uint8	Charging current in A

Example:

AT+MAXCHCUR?
+MAXCHCUR=63
OK

Note

Set this to match the electrical limits of your installation!

AT+CONSUMLIM

Read/write energy consumption limit (stop charging session if the limit has been hit).

Command	Return Value	Return Code
AT+CONSUMLIM?	+CONSUMLIM=<consumption>	OK
AT+CONSUMLIM=<consumption>	-	OK
AT+CONSUMLIM=?	Command description	OK

Parameter	Access	Type	Description
<consumption>	RW	uint32	Consumption in Wh

Example:

AT+CONSUMLIM?
+CONSUMLIM=0
OK

Note

Value 0 means no limit

AT+DEFCONSUMLIM

Read/write the default consumption limit.

Command	Return Value	Return Code
AT+DEFCONSUMLIM?	+DEFCONSUMLIM=<consumption>	OK
AT+DEFCONSUMLIM=<consumption>	-	OK
AT+DEFCONSUMLIM=?	Command description	OK

Parameter	Access	Type	Description
<consumption>	RW	uint32	Consumption in Wh

Example:

AT+DEFCONSUMLIM?
+DEFCONSUMLIM=25000
OK

Note

This example sets a 25 kWh amount of energy consumption limit

Note

Value 0 means no limit

AT+CHTIMELIM

Read/write charging time limit (stop charging session if the limit has been hit).

Command	Return Value	Return Code
AT+CHTIMELIM?	+CHTIMELIM=<time>	OK
AT+CHTIMELIM=<time>	-	OK
AT+CHTIMELIM=?	Command description	OK

Parameter	Access	Type	Description
<time>	RW	uint32	Time in s

Example:

AT+CHTIMELIM=7200
OK

Note

This example sets a 2h charging time limit

Note

Value 0 means no limit

AT+DEFCHTIMELIM

Read/write the default charging time limit.

Command	Return Value	Return Code
AT+DEFCHTIMELIM?	+DEFCHTIMELIM=<time>	OK
AT+DEFCHTIMELIM=<time>	-	OK
AT+DEFCHTIMELIM=?	Command description	OK

Parameter	Access	Type	Description
<time>	RW	uint32	Time in s

Example:

AT+DEFCHTIMELIM?
+DEFCHTIMELIM=0
OK

Note

Value 0 means no limit

AT+UNDERPOWERLIM

Read/write under power charging limit (stop charging session when power falls under the limit).

Command	Return Value	Return Code
AT+UNDERPOWERLIM?	+UNDERPOWERLIM=<power>	OK
AT+UNDERPOWERLIM=<power>	-	OK
AT+UNDERPOWERLIM=?	Command description	OK

Parameter	Access	Type	Description
<power>	RW	uint16	Power in W

Example:

AT+UNDERPOWERLIM?
+UNDERPOWERLIM=0
OK

Note

Value 0 means no limit

AT+DEFUNDERPOWERLIM

Read/write the default under power charging limit.

Command	Return Value	Return Code
AT+DEFUNDERPOWERLIM?	+DEFUNDERPOWERLIM=<power>	OK
AT+DEFUNDERPOWERLIM=<power>	-	OK
AT+DEFUNDERPOWERLIM=?	Command description	OK

Parameter	Access	Type	Description
<power>	RW	uint16	Power in W

Example:

AT+DEFUNDERPOWERLIM?
+DEFUNDERPOWERLIM=0
OK

Note

Value 0 means no limit

AT+LIMREACH

Print the state of the charging limit bit (any limit was reached).

Command	Return Value	Return Code
AT+LIMREACH?	+LIMREACH=<reached>	OK
AT+LIMREACH=?	Command description	OK

Parameter	Access	Type	Description
<reached>	R	uint8	Is charging limit reached (0 or 1)

Example:

AT+LIMREACH?
+LIMREACH=0
OK

AT+SOCKETOUTLET

Read/write socket outlet installation setting. Set it only for PP board. This enables detection of provided cable max current, and socket lock functionality (if it's available).

Command	Return Value	Return Code
AT+SOCKETOUTLET?	+SOCKETOUTLET=<socket_outlet>	OK
AT+SOCKETOUTLET=<socket_outlet>	-	OK | ERROR
AT+SOCKETOUTLET=?	Command description	OK

Parameter	Access	Type	Description
<socket_outlet>	RW	uint8	Socket outlet (0 or 1)

Example:

AT+SOCKETOUTLET?
+SOCKETOUTLET=0
OK

Note

Value 0 means no limit

Energy meter commands

AT+EMETERMODE

Read/write energy meter mode. Value CUR require EMETER=(2|1),x. Value CUR_VLT require EMETER=2,x.

Command	Return Value	Return Code
AT+EMETERMODE?	+EMETERMODE=<mode>	OK
AT+EMETERMODE=<mode>	-	OK | ERROR
AT+EMETERMODE=?	Command description	OK

Parameter	Access	Type	Description
<mode>	RW	uint8	Mode number (DUMMY=0, CUR=1, CUR_VLT=2)

Example:

AT+EMETERMODE?
+EMETERMODE=1
OK

AT+EMETERMODE=5
ERROR

Note

In the example above, value 5 fails because it is out of range

AT+EMETERACVOLTAGE

Read/write energy meter voltage setting, used for calculation in DUMMY and CUR mode (use range 100V - 300V).

Command	Return Value	Return Code
AT+EMETERACVOLTAGE?	+EMETERACVOLTAGE=<voltage>	OK
AT+EMETERACVOLTAGE=<voltage>	-	OK | ERROR
AT+EMETERACVOLTAGE=?	Command description	OK

Parameter	Access	Type	Description
<voltage>	RW	uint16	Voltage in V

Example:

AT+EMETERACVOLTAGE?
+EMETERACVOLTAGE=253
OK

AT+EMETERACVOLTAGE=305
ERROR

Note

In the example above, setting value 305 fails because it is out of range

AT+EMETERTHREEPHASE

Read/write energy meter three phase mode setting.

Command	Return Value	Return Code
AT+EMETERTHREEPHASE?	+EMETERTHREEPHASE=<three_phases>	OK
AT+EMETERTHREEPHASE=<three_phases>	-	OK
AT+EMETERTHREEPHASE=?	Command description	OK

Parameter	Access	Type	Description
<three_phases>	RW	uint8	Three phases (0 or 1)

Example:

AT+EMETERTHREEPHASE?
+EMETERTHREEPHASE=1
OK

AT+EMETERPOWER

Print the value of the actual charging power.

Command	Return Value	Return Code
AT+EMETERPOWER?	+EMETERPOWER=<power>	OK
AT+EMETERPOWER=?	Command description	OK

Parameter	Access	Type	Description
<power>	RO	uint16	Power in W

Example:

AT+EMETERPOWER?
+EMETERPOWER=11085
OK

AT+EMETERSESTIME

Print the duration of the current charging session.

Command	Return Value	Return Code
AT+EMETERSESTIME?	+EMETERSESTIME=<time>	OK
AT+EMETERSESTIME=?	Command description	OK

Parameter	Access	Type	Description
<time>	RO	uint32	Time in s

Example:

AT+EMETERSESTIME?
+EMETERSESTIME=3769
OK

AT+EMETERCHTIME

Print the amount of time spent with charging.

Command	Return Value	Return Code
AT+EMETERCHTIME?	+EMETERCHTIME=<time>	OK
AT+EMETERCHTIME=?	Command description	OK

Parameter	Access	Type	Description
<time>	RO	uint32	Time in s

Example:

AT+EMETERCHTIME?
+EMETERCHTIME=3702
OK

AT+EMETERCONSUM

Print the energy consumption of the actual session.

Command	Return Value	Return Code
AT+EMETERCONSUM?	+EMETERCONSUM=<consumption>	OK
AT+EMETERCONSUM=?	Command description	OK

Parameter	Access	Type	Description
<consumption>	RO	uint32	Consumption in Wh

Example:

AT+EMETERCONSUM?
+EMETERCONSUM=35547
OK

AT+EMETERTOTCONSUM

Read/reset the total energy delivered with this ESP32-EVSE device.

Command	Return Value	Return Code
AT+EMETERTOTCONSUM?	+EMETERTOTCONSUM=<consumption>	OK
AT+EMETERTOTCONSUM=<consumption>	-	OK | ERROR
AT+EMETERTOTCONSUM=?	Command description	OK

Parameter	Access	Type	Description
<consumption>	RW	uint64	Consumption in Wh

Example:

AT+EMETERTOTCONSUM?
+EMETERTOTCONSUM=915517547
OK

AT+EMETERCONSUM=0
OK

AT+EMETERCONSUM=5
ERROR

Note

To reset total consumption use value 0, other values will throw an error.

AT+EMETERVOLTAGE

Print the measured or preset voltage.

Command	Return Value	Return Code
AT+EMETERVOLTAGE?	+EMETERVOLTAGE=<l1_vlt>,<l2_vlt>,<l3_vlt>	OK
AT+EMETERVOLTAGE=?	Command description	OK

Parameter	Access	Type	Description
<l1_vlt>	RO	uint32	L1 voltage in mV
<l2_vlt>	RO	uint32	L2 voltage in mV
<l3_vlt>	RO	uint32	L3 voltage in mV

Example:

AT+EMETERVOLTAGE?
+EMETERVOLTAGE=255951,254753,255852
OK

AT+EMETERVOLTAGE?
+EMETERVOLTAGE=250000,0,0
OK

Note

When energy meter is single phase, L2 and L3 voltage are 0.

AT+EMETERCURRENT

Print the measured or preset current.

Command	Return Value	Return Code
AT+EMETERCURRENT?	+EMETERCURRENT=<l1_cur>,<l2_cur>,<l3_cur>	OK
AT+EMETERCURRENT=?	Command description	OK

Parameter	Access	Type	Description
<l1_cur>	RO	uint32	L1 current in mA
<l2_cur>	RO	uint32	L2 current in mA
<l3_cur>	RO	uint32	L3 current in mA

Example:

AT+EMETERCURRENT?
+EMETERCURRENT=10951,10753,105852
OK

AT+EMETERCURRENT?
+EMETERCURRENT=32000,0,0
OK

Note

When energy meter is single phase, L2 and L3 current are 0.

Network commands

AT+WIFISTACFG

This command is used to read/write WiFi STA (client) configuration.

Command	Return Value	Return Code
AT+WIFISTACFG?	+WIFISTACFG=<enabled>,<ssid>,<password>	OK
AT+WIFISTACFG=<enabled>,<ssid>,<password>	-	OK | ERROR
AT+WIFISTACFG=?	Command description	OK

Parameter	Access	Type	Description
<enabled>	RW	uint8	Enabled/disable STA (0 or 1)
<ssid>	RW	string	SSID (max length 32)
<password>	WO	string	Password (max length 32)

Example:

AT+WIFISTACFG?
+WIFISTACFG=1,"MirkoTik-E12345",""
OK

AT+WIFISTACFG=0
OK

AT+WIFISTACFG?
+WIFISTACFG=0,"MirkoTik-E12345",""
OK

AT+WIFISTACFG=1,"MirkoTik-E99999","topsecret"
OK

AT+WIFISTACFG?
+WIFISTACFG=1,"MirkoTik-E99999",""
OK

Note

Calling WIFISTACFG=(0|1) only disables/enables the WiFi client, SSID and password will be not modified.

AT+WIFIAPCFG

Read/write WiFi access point mode configuration.

Command	Return Value	Return Code
AT+WIFIAPCFG?	+WIFIAPCFG=<enabled>,<ssid>	OK
AT+WIFIAPCFG=<enabled>	-	OK
AT+WIFIAPCFG=?	Command description	OK

Parameter	Access	Type	Description
<enabled>	RW	uint8	Enabled/disable AP (0 or 1)
<ssid>	RO	string	SSID (max length 32)

Example:

AT+WIFIAPCFG?
+WIFIAPCFG=0,"ESP32-EVSE-03fc60"
OK

AT+WIFIAPCFG=1
OK

AT+WIFISTACFG?
+WIFIAPCFG=1,"ESP32-EVSE-03fb59"
OK

Note

After enabling access point mode, if there's no client connected within 1 minute, access point mode will be disabled.

AT+WIFISTACONN

Print WiFi client mode connection state.

Command	Return Value	Return Code
AT+WIFISTACONN?	+WIFISTACONN=<connection>,<rssi>	OK
AT+WIFISTACONN=?	Command description	OK

Parameter	Access	Type	Description
<connection>	RO	uint8	Has connection (0 or 1)
<rssi>	RO	int8	RSSI in dB

Example:

AT+WIFISTACONN?
+WIFISTACONN=1,-61
OK

AT+WIFIAPCONN

Print WiFi access point mode connection state.

Command	Return Value	Return Code
AT+WIFIAPCONN?	+WIFIAPCONN=<connection>	OK
AT+WIFIAPCONN=?	Command description	OK

Parameter	Access	Type	Description
<connection>	RO	uint8	Has connection (0 or 1)

Example:

AT+WIFIAPCONN?
+WIFIAPCONN=0
OK

AT+WIFISTASTATIC

This command is used to read/write WiFi STA static IP configuration.

Command	Return Value	Return Code
AT+WIFISTASTATIC?	+WIFISTASTATIC=<enabled>,<ip>,<gateway>,<netmask>,<dns>	OK
AT+WIFISTASTATIC=<enabled>,<ip>,<gateway>,<netmask><dns>	-	OK | ERROR
AT+WIFISTASTATIC=?	Command description	OK

Parameter	Access	Type	Description
<enabled>	RW	uint8	Enabled/disable static IP (0 or 1)
<ip>	RW	string	IP address (max length 32)
<gateway>	RW	string	Gateway (max length 32)
<netmask>	RW	string	Netmask (max length 32)
<dns>	RW	string	DNS server (max length 32)

Example:

OK
AT+WIFISTASTATIC?
+WIFISTASTATIC=1,"192.168.88.100","192.168.88.1","255.255.255.0","192.168.88.1"
OK

AT+WIFISTASTATIC=0
OK

AT+WIFISTASTATIC?
+WIFISTASTATIC=0,"192.168.88.100","192.168.88.1","255.255.255.0","192.168.88.1"
OK

AT+WIFISTASTATIC=1,"192.168.88.101"
OK

Note

Calling WIFISTASTATIC=(0|1) only disables/enables the static IP, other parameters will be not modified.

AT+WIFISTAIP

Print WiFi client IP address.

Command	Return Value	Return Code
AT+WIFISTAIP?	+WIFISTAIP=<ip>	OK
AT+WIFISTAIP=?	Command description	OK

Parameter	Access	Type	Description
<ip>	RO	string	IP address

Example:

AT+WIFISTAIP?
+WIFISTAIP="192.168.88.50"
OK

AT+WIFISTAMAC

Print WiFi client MAC address.

Command	Return Value	Return Code
AT+WIFISTAMAC?	+WIFISTAMAC=<mac>	OK
AT+WIFISTAMAC=?	Command description	OK

Parameter	Access	Type	Description
<mac>	RO	string	IP address

Example:

AT+WIFISTAMAC?
+WIFISTAMAC="30:c6:f7:x3:ab:5c"
OK

AT+WIFIAPIP

Print WiFi access point IP address.

Command	Return Value	Return Code
AT+WIFIAPIP?	+WIFIAPIP=<ip>	OK
AT+WIFIAPIP=?	Command description	OK

Parameter	Access	Type	Description
<ip>	RO	string	IP address

Example:

AT+WIFIAPIP?
+WIFIAPIP="192.168.4.1"
OK

AT+WIFIAPMAC

Print WiFi access point MAC address.

Command	Return Value	Return Code
AT+WIFIAPMAC?	+WIFIAPMAC=<mac>	OK
AT+WIFIAPMAC=?	Command description	OK

Parameter	Access	Type	Description
<mac>	RO	string	IP address

Example:

AT+WIFIAPMAC?
+WIFIAPMAC="30:c6:f7:x3:ab:5d"
OK

AT+WIFIAPSCAN

Scan WiFi for surrounding acc esspoints.

Command	Return Value	Return Code
AT+WIFIAPSCAN	+WIFIAPSCAN=<ssid>,<auth>,<rssi>	OK

Parameter	Access	Type	Description
<ssid>	RO	string	AP SSID (max length 32)
<auth>	RO	uint8	AP require authentication (0 or 1)
<rssi>	RO	int8	AP RSSI in dB

Example:

AT+WIFIAPSCAN
+WIFIAPSCAN="MirkoTik-E12345",1,-51
+WIFIAPSCAN="Pretty fly for a WiFi",1,-69
+WIFIAPSCAN="Winternet is Coming",1,-72
+WIFIAPSCAN="The LAN Before Time",1,-75
OK

AT+HOSTNAME

Read/write mDNS hostname.

Command	Return Value	Return Code
AT+HOSTNAME?	+HOSTNAME=<hostname>	OK
AT+HOSTNAME=<hostname>	-	OK | ERROR
AT+HOSTNAME=?	Command description	OK

Parameter	Access	Type	Description
<hostname>	RO	string	Hostname (max length 32)

Example:

AT+HOSTNAME?
+HOSTNAME="evse"
OK

AT+HOSTNAME="evse2"
OK

AT+INSTNAME

Read/write mDNS instance name.

Command	Return Value	Return Code
AT+INSTNAME?	+INSTNAME=<instance_name>	OK
AT+INSTNAME=<instance_name>	-	OK | ERROR
AT+INSTNAME=?	Command description	OK

Parameter	Access	Type	Description
<instance_name>	RO	string	Instance name (max length 32)

Example:

AT+INSTNAME?
+INSTNAME="evse"
OK

AT+INSTNAME="evse2"
OK

Serial commands

AT+SERIAL

Read/write serial configuration.

Command	Return Value	Return Code
AT+SERIAL<id>?	+SERIAL<id>=<mode>,<baud_rate>,<data_bits>,<stop_bits>,<parity>	OK
AT+SERIAL<id>=<mode>,<baud_rate>,<data_bits>,<stop_bits>,<parity>	-	OK
AT+SERIAL<id>=?	Command description	OK

Parameter	Access	Type	Description
<id>	RW	uint8	Serial id (0,1,2?, some chips has only 2 uart)
<mode>	RW	uint8	Serial mode (NONE=0, LOG=1, MODBUS=2, NEXTION=3, SCRIPT=4, AT=5)
<baud_rate>	RW	uint32	Serial baud rate
<data_bits>	RW	uint8	Serial data bits (enum values uart_word_length_t)
<stop_bits>	RW	uint8	Serial stop bits (enum values uart_stop_bits_t)
<parity>	RW	uint8	Serial parity (enum values uart_parity_t)

Example:

AT+SERIAL0?
+SERIAL0=0,115200,3,1,0
OK

Note

Remember which serial port you are using for AT commands. After changing the currently used serial port, you will not be able to revert the changes from here.

Board config

The commands below provide functionality to read board config.

AT+DEVNAME

Print device name.

Command	Return Value	Return Code
AT+DEVNAME?	+DEVNAME=<device_name>	OK
AT+DEVNAME=?	Command description	OK

Parameter	Access	Type	Description
<device_name>	RO	string	Device name (max length 32)

Example:

AT+DEVNAME?
+DEVNAME="ESP32-DevKitC EVSE"
OK

AT+SOCKETLOCK

Print the definition of socket lock.

Command	Return Value	Return Code
AT+SOCKETLOCK?	+SOCKETLOCK=<socket_lock>	OK
AT+SOCKETLOCK=?	Command description	OK

Parameter	Access	Type	Description
<socket_lock>	RO	uint8	Has defined socket lock (0 or 1)

Example:

AT+SOCKETLOCK?
+SOCKETLOCK=1
OK

AT+SOCKETLOCKMINBREAKTIME

Print socket lock minimum break time.

Command	Return Value	Return Code
AT+SOCKETLOCKMINBREAKTIME?	+SOCKETLOCKMINBREAKTIME=<min_break_time>	OK
AT+SOCKETLOCKMINBREAKTIME=?	Command description	OK

Parameter	Access	Type	Description
<min_break_time>	RO	uint16	Socket lock min break time in ms

Example:

AT+SOCKETLOCKMINBREAKTIME?
+SOCKETLOCKMINBREAKTIME=1
OK

AT+PROXIMITY

Print the definition of a proximity pilot.

Command	Return Value	Return Code
AT+PROXIMITY?	+PROXIMITY=<proximity>	OK
AT+PROXIMITY=?	Command description	OK

Parameter	Access	Type	Description
<proximity>	RO	uint8	Has defined proximity pilot (0 or 1)

Example:

AT+PROXIMITY?
+PROXIMITY=1
OK

AT+TEMPSENSOR

Print the definition of a temperature sensor bus.

Command	Return Value	Return Code
AT+TEMPSENSOR?	+TEMPSENSOR=<temperature_sensor>	OK
AT+TEMPSENSOR=?	Command description	OK

Parameter	Access	Type	Description
<temperature_sensor>	RO	uint8	Has defined temperature sensor bus (0 or 1)

Example:

AT+TEMPSENSOR?
+TEMPSENSOR=1
OK

Note

When you have defined temperature sensor bus, it doesn't automaticaly mean you have a connected temperature sensor. Command AT+TEMP returns the count of the active temperature sensors.

AT+EMETER

Print the energy meter settings.

Command	Return Value	Return Code
AT+EMETER?	+EMETER=<type>,<three_phases>	OK
AT+EMETER=?	Command description	OK

Parameter	Access	Type	Description
<type>	RO	uint8	Type of energy meter (NONE=0, CURRENT=1, CURRENT_VOLTAGE=2)
<three_phases>	RO	uint8	Three phases energy meter (0 or 1)

Example:

AT+TEMPSENSOR?
+EMETER=2,0
OK

AT+SERIALS

Print the serial definitions.

Command	Return Value	Return Code
AT+SERIALS?	+SERIALS=<type>,<name>	OK
AT+SERIALS=?	Command description	OK

Parameter	Access	Type	Description
<type>	RO	uint8	Type of serial (UART=1, RS485=2)
<name>	RO	string	Name of serial (max length 32)

Example:

AT+SERIALS?
+SERIALS=1,"UART via USB"
+SERIALS=2,"RS485"
+SERIALS=1,"UART"
OK

AT+AUXINPUTS

Print AUX input definitions.

Command	Return Value	Return Code
AT+AUXINPUTS?	+AUXINPUTS=<name>	OK
AT+AUXINPUTS=?	Command description	OK

Parameter	Access	Type	Description
<name>	RO	string	Name of input (max length 8)

Example:

AT+AUXINPUTS?
+AUXINPUTS="IN1"
+AUXINPUTS="IN2"
OK

AT+AUXOUTPUTS

Print AUX output definitions.

Command	Return Value	Return Code
AT+AUXOUTPUTS?	+AUXOUTPUTS=<name>	OK
AT+AUXOUTPUTS=?	Command description	OK

Parameter	Access	Type	Description
<name>	RO	string	Name of output (max length 8)

Example:

AT+AUXOUTPUTS?
+AUXOUTPUTS="OUT1"
+AUXOUTPUTS="OUT2"
+AUXOUTPUTS="OUT3"
+AUXOUTPUTS="OUT4"
OK

AT+AUXANALOGINPUTS

Print AUX analog input definitions.

Command	Return Value	Return Code
AT+AUXANALOGINPUTS?	+AUXANALOGINPUTS=<name>	OK
AT+AUXANALOGINPUTS=?	Command description	OK

Parameter	Access	Type	Description
<name>	RO	string	Name of analog input (max length 8)

Example:

AT+AUXANALOGINPUTS?
+AUXANALOGINPUTS="IN3"
OK

See also

• Integration Examples
• Modbus
• Nextion
• Lua
• REST API