ESP32S2-AT v2.1.0.0 Release Notes

Documentation for Release v2.1.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.1.0.0_esp32s2/
ESP32-S2-WROOM_AT_Bin_V2.1.0.0.zip
ESP32-S2-WROVER_AT_Bin_V2.1.0.0.zip
ESP32-S2-SOLO_AT_Bin_V2.1.0.0.zip
ESP32-S2-MINI_AT_Bin_V2.1.0.0.zip

ESP32S2-AT v2.1.0.0 is the first released firmware for ESP32S2.

Feature

Basic AT Commands

• AT : Tests AT startup.
• AT+RST : Restarts a module.
• AT+GMR : Checks version information.
• ATE : Configures echoing of AT commands.
• AT+RESTORE : Restores the factory default settings of the module.
• AT+UART_CUR : Current UART configuration.
• AT+UART_DEF : Default UART configuration, saved in flash.
• AT+SYSRAM : Checks current remaining heap size and minimum heap size.
• AT+SYSMSG : Set message format.
• AT+RFPOWER : Set RF TX Power.
• AT+SYSFLASH : Set User Partitions in Flash.
• AT+SYSROLLBACK : Roll back to the previous firmware.
• AT+SYSTIMESTAMP: Set local time stamp.
• AT+SYSLOG : Enable or disable the AT error code prompt.
• AT+SYSSTORE : Config parameter store mode.

Wi-Fi AT Commands

• AT+CWMODE : Sets the Wi-Fi mode (STA/AP/STA+AP).
• AT+CWJAP : Connects to an AP.
• AT+CWLAPOPT : Sets the configuration of command AT+CWLAP.
• AT+CWLAP : Lists available APs.
• AT+CWQAP : Disconnects from the AP.
• AT+CWSAP : Sets the configuration of the ESP SoftAP.
• AT+CWLIF : Gets the Station IP to which the ESP SoftAP is connected.
• AT+CWQIF : Disconnect Station from the ESP SoftAP.
• AT+CWDHCP : Enables/disables DHCP.
• AT+CWDHCPS : Sets the IP range of the ESP SoftAP DHCP server.
• AT+CWAUTOCONN : Connects to the AP automatically on power-up.
• AT+CWAPPROTO : Sets the 802.11 b/g/n protocol standard of SoftAP mode.
• AT+CWSTAPROTO : Sets the 802.11 b/g/n protocol standard of station mode.
• AT+CIPSTAMAC : Sets the MAC address of ESP Station.
• AT+CIPAPMAC : Sets the MAC address of ESP SoftAP.
• AT+CIPSTA : Sets the IP address of ESP Station.
• AT+CIPAP : Sets the IP address of ESP SoftAP.
• AT+CWSTARTSMART : Starts SmartConfig.
• AT+CWSTOPSMART : Stops SmartConfig.
• AT+WPS : Enables the WPS function.
• AT+MDNS : Configurates the MDNS function
• AT+CWHOSTNAME : Configures the Name of ESP Station
• AT+CWCOUNTRY : Configures the Wi-Fi Country Code

TCP/IP AT Commands

• AT+CIPSTATUS : Gets the connection status.
• AT+CIPDOMAIN : Domain Name Resolution Function.
• AT+CIPSTART : Establishes TCP connection, UDP transmission or SSL connection.
• AT+CIPSTARTEX : Establishes TCP connection, UDP transmission or SSL connection with automatically assigned ID.
• AT+CIPSEND : Sends data.
• AT+CIPSENDEX : Sends data when length of data is , or when \0 appears in the data.
• AT+CIPCLOSE : Closes TCP/UDP/SSL connection.
• AT+CIFSR : Gets the local IP address.
• AT+CIPMUX : Configures the multiple connections mode.
• AT+CIPSERVER : Deletes/Creates TCP or SSL server.
• AT+CIPSERVERMAXCONN : Set the Maximum Connections Allowed by Server.
• AT+CIPMODE : Configures the transmission mode.
• AT+SAVETRANSLINK : Saves the transparent transmission link in flash.
• AT+CIPSTO : Sets timeout when ESP32 runs as a TCP server.
• AT+CIPSNTPCFG : Configures the time domain and SNTP server.
• AT+CIPSNTPTIME : Queries the SNTP time.
• AT+CIUPDATE : Updates the software through Wi-Fi.
• AT+CIPDINFO : Shows remote IP and remote port with +IPD.
• AT+CIPSSLCCONF : Config SSL client.
• AT+CIPRECONNINTV: Set Wi-Fi transparent transmitting auto-connect interval.
• AT+CIPRECVMODE: Set Socket Receive Mode.
• AT+CIPRECVDATA: Get Socket Data in Passive Receive Mode.
• AT+CIPRECVLEN: Get Socket Data Length in Passive Receive Mode.
• AT+PING: Ping Packets
• AT+CIPDNS : Configures Domain Name System.
• AT+CIPTCPOPT : Configurates the socket options.

MQTT AT Commands

• AT+MQTTUSERCFG : Set MQTT User Config
• AT+MQTTCLIENTID : Set MQTT Client ID
• AT+MQTTUSERNAME : Set MQTT Username
• AT+MQTTPASSWORD : Set MQTT Password
• AT+MQTTCONNCFG : Set configuration of MQTT Connection
• AT+MQTTCONN : Connect to MQTT Broker
• AT+MQTTPUB : Publish MQTT Data in string
• AT+MQTTPUBRAW : Publish MQTT message in binary
• AT+MQTTSUB : Subscribe to MQTT Topic
• AT+MQTTUNSUB : Unsubscribe from MQTT Topic
• AT+MQTTCLEAN : Close the MQTT Connection

HTTP AT Commands

• AT+HTTPCLIENT - Send HTTP Client Request
• AT+HTTPGETSIZE - Get HTTP Resource Size