v2.2.0.0_esp32c3

ESP32-C3 AT Release v2.2.0.0

Documentation for Release v2.2.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.2.0.0_esp32c3/

ESP32-C3-MINI-1_AT_Bin_V2.2.0.0.zip

ESP32-C3 AT v2.2.0.0 is the first released firmware for ESP32-C3.

Known Issue

• AT command port will print several extra characters when the chip is restarted (affected commands: AT+RST, AT+RESTORE, AT+CIUPDATE)
• The set value of AT+RFPOWER command is inconsistent with the query value, when the value is greater than 80

Feature

Basic AT Commands

• AT: Test AT startup.
• AT+RST: Restart a module.
• AT+GMR: Check version information.
• AT+CMD: List all AT commands and types supported in current firmware.
• AT+GSLP: Enter Deep-sleep mode.
• ATE: Configure AT commands echoing.
• AT+RESTORE: Restore factory default settings of the module.
• AT+UART_CUR: Current UART configuration, not saved in flash.
• AT+UART_DEF: Default UART configuration, saved in flash.
• AT+SLEEP: Set the sleep mode.
• AT+SYSRAM: Query current remaining heap size and minimum heap size.
• AT+SYSMSG: Query/Set System Prompt Information.
• AT+USERRAM: Operate user’s free RAM.
• AT+SYSFLASH: Query/Set User Partitions in Flash.
• AT+FS: Filesystem Operations.
• AT+RFPOWER: Query/Set RF TX Power.
• AT+SYSROLLBACK: Roll back to the previous firmware.
• AT+SYSTIMESTAMP: Query/Set local time stamp.
• AT+SYSLOG: Enable or disable the AT error code prompt.
• AT+SLEEPWKCFG: Query/Set the light-sleep wakeup source and awake GPIO.
• AT+SYSSTORE: Query/Set parameter store mode.
• AT+SYSREG: Read/write the register.

Wi-Fi AT Commands

• AT+CWMODE: Set the Wi-Fi mode (Station/SoftAP/Station+SoftAP).
• AT+CWSTATE: Query the Wi-Fi state and Wi-Fi information.
• AT+CWJAP: Connect to an AP.
• AT+CWRECONNCFG: Query/Set the Wi-Fi reconnecting configuration.
• AT+CWLAPOPT: Set the configuration for the command AT+CWLAP.
• AT+CWLAP: List available APs.
• AT+CWQAP: Disconnect from an AP.
• AT+CWSAP: Query/Set the configuration of an ESP SoftAP.
• AT+CWLIF: Obtain IP address of the station that connects to an ESP SoftAP.
• AT+CWQIF: Disconnect stations from an ESP SoftAP.
• AT+CWDHCP: Enable/disable DHCP.
• AT+CWDHCPS: Query/Set the IP addresses allocated by an ESP SoftAP DHCP server.
• AT+CWAUTOCONN: Connect to an AP automatically when powered on.
• AT+CWAPPROTO: Query/Set the 802.11 b/g/n protocol standard of SoftAP mode.
• AT+CWSTAPROTO: Query/Set the 802.11 b/g/n protocol standard of station mode.
• AT+CIPSTAMAC: Query/Set the MAC address of an ESP station.
• AT+CIPAPMAC: Query/Set the MAC address of an ESP SoftAP.
• AT+CIPSTA: Query/Set the IP address of an ESP station.
• AT+CIPAP: Query/Set the IP address of an ESP SoftAP.
• AT+CWSTARTSMART: Start SmartConfig.
• AT+CWSTOPSMART: Stop SmartConfig.
• AT+WPS: Enable the WPS function.
• AT+MDNS: Configure the mDNS function.
• AT+CWJEAP: Connect to a WPA2 Enterprise AP.
• AT+CWHOSTNAME: Query/Set the host name of an ESP station.
• AT+CWCOUNTRY: Query/Set the Wi-Fi Country Code.

TCP/IP AT Commands

• AT+CIPV6: Enable/disable the network of Internet Protocol Version 6 (IPv6).
• AT+CIPSTATUS: Obtain the TCP/UDP/SSL connection status and information.
• AT+CIPDOMAIN: Resolve a Domain Name.
• AT+CIPSTART: Establish TCP connection, UDP transmission, or SSL connection.
• AT+CIPSTARTEX: Establish TCP connection, UDP transmission, or SSL connection with an automatically assigned ID.
• [Passthrough Mode Only] +++: Exit the passthrough mode.
• AT+CIPSEND: Send data in the normal transmission mode or Wi-Fi passthrough mode.
• AT+CIPSENDEX: Send data in the normal transmission mode in expanded ways.
• AT+CIPCLOSE: Close TCP/UDP/SSL connection.
• AT+CIFSR: Obtain the local IP address and MAC address.
• AT+CIPMUX: Enable/disable the multiple connections mode.
• AT+CIPSERVER: Delete/create a TCP/SSL server.
• AT+CIPSERVERMAXCONN: Query/Set the maximum connections allowed by a server.
• AT+CIPMODE: Query/Set the transmission mode.
• AT+SAVETRANSLINK: Set whether to enter Wi-Fi passthrough mode on power-up.
• AT+CIPSTO: Query/Set the local TCP Server Timeout.
• AT+CIPSNTPCFG: Query/Set the time zone and SNTP server.
• AT+CIPSNTPTIME: Query the SNTP time.
• AT+CIUPDATE: Upgrade the firmware through Wi-Fi.
• AT+CIPDINFO: Set “+IPD” message mode.
• AT+CIPSSLCCONF: Query/Set SSL clients.
• AT+CIPSSLCCN: Query/Set the Common Name of the SSL client.
• AT+CIPSSLCSNI: Query/Set SSL client Server Name Indication (SNI).
• AT+CIPSSLCALPN: Query/Set SSL client Application Layer Protocol Negotiation (ALPN).
• AT+CIPSSLCPSK: Query/Set SSL client Pre-shared Key (PSK).
• AT+CIPRECONNINTV: Query/Set the TCP/UDP/SSL reconnection interval for the Wi-Fi passthrough mode.
• AT+CIPRECVMODE: Query/Set socket receiving mode.
• AT+CIPRECVDATA: Obtain socket data in passive receiving mode.
• AT+CIPRECVLEN: Obtain socket data length in passive receiving mode.
• AT+PING: Ping the remote host.
• AT+CIPDNS: Query/Set DNS server information.
• AT+CIPTCPOPT: Query/Set the socket options.

MQTT AT Commands

• AT+MQTTUSERCFG: Set MQTT user configuration
• 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 Brokers
• AT+MQTTPUB: Publish MQTT Messages in string
• AT+MQTTPUBRAW: Publish MQTT messages in binary
• AT+MQTTSUB: Subscribe to MQTT topics
• AT+MQTTUNSUB: Unsubscribe from MQTT topics
• AT+MQTTCLEAN: Close MQTT connections

HTTP AT Commands

• AT+HTTPCLIENT: Send HTTP Client Request
• AT+HTTPGETSIZE: Get HTTP Resource Size
• AT+HTTPCPOST: Post HTTP data of specified length

Web server AT Commands

• AT+WEBSERVER: Enable/disable Wi-Fi connection configuration via web server.

Driver AT Commands

• AT+DRVADC: Read ADC channel value.
• AT+DRVPWMINIT: Initialize PWM driver.
• AT+DRVPWMDUTY: Set PWM duty.
• AT+DRVPWMFADE: Set PWM fade.
• AT+DRVI2CINIT: Initialize I2C master driver.
• AT+DRVI2CRD: Read I2C data.
• AT+DRVI2CWRDATA: Write I2C data.
• AT+DRVI2CWRBYTES: Write no more than 4 bytes I2C data.
• AT+DRVSPICONFGPIO: Configure SPI GPIO.
• AT+DRVSPIINIT: Initialize SPI master driver.
• AT+DRVSPIRD: Read SPI data.
• AT+DRVSPIWR: Write SPI data.

v2.1.0.0_esp32s2

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

v2.1.0.0_esp8266

ESP8266-AT Release v2.1.0.0

Documentation for Release v2.1.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.1.0.0_esp8266/

You can download the firmwares to try them, which support OTA from espressif‘s server.

ESP8266-IDF-AT_V2.1.0.0.zip

ESP8266-AT v2.1.0.0 is a major update for ESP8266-AT v2.0.0.0.

This is the list of changes since ESP8266-AT Release v2.0.0.0.

SDK Update and Known issue

• ESP8266_RTOS_SDK version update to release v3.3(b6e861a).

1. New Feature & Change List

1.1 Wi-Fi

• AT+CWCOUNTRY: set and query the Wi-Fi country code.
• AT+CWSTAPROTO: set and query the 802.11 b/g/n protocol standard of station mode.
• AT+CWAPPROTO: set and query the 802.11 b/g/n protocol standard of SoftAP mode.
• AT+FACTPLCP: send with long or short PLCP.
• Support scan mode configuration in the command AT+CWJAP.
• Support automatically connect to the previous AP when station mode is enabled again by AT+CWMODE.

1.2 TCP/IP

• AT+CIPTCPOPT: set and query TCP socket options.
• AT+CIPSSLCCN: set and query SSL client common name.
• AT+CIPSSLCSNI: set and query SSL client server name indication.
• AT+CIPSSLCALPN: set and query SSL client application layer protocol negotiation.
• AT+CIPSSLCPSK: set and query SSL client pre-shared key.
• Support multicast in the command AT+CIPSTART.
• Support two-way authentication when create SSL.

1.3 MQTT

• AT+MQTTUSERCFG: set and query MQTT user configuration.
• AT+MQTTCLIENTID: Set and query MQTT client ID.
• AT+MQTTUSERNAME: set and query MQTT username.
• AT+MQTTPASSWORD: set and query MQTT password.
• AT+MQTTCONNCFG: set and query configuration of MQTT Connection.
• AT+MQTTCONN: Connect to MQTT Broker.
• AT+MQTTPUB: Publish MQTT Data in string format.
• AT+MQTTPUBRAW: Publish MQTT message in binary-coded format.
• AT+MQTTSUB: Subscribe MQTT Topic.
• AT+MQTTUNSUB: Unsubscribe from MQTT Topic.
• AT+MQTTCLEAN: Close the MQTT Connection.

1.4 HTTP

• AT+HTTPCLIENT: send HTTP client request.
• AT+HTTPGETSIZE: get HTTP resource size.

1.5 System

• AT+SYSLOG: enable or disable the AT error code prompt.
• AT+SYSSTORE: configure parameter store mode.
• AT+SYSTIMESTAMP: Set local timestamp.
• AT+SYSROLLBACK: roll back to the previous firmware.
• AT+SYSFLASH: set and query user partitions in Flash.
• Support make SILENCE=1 to disable log for saving flash space.
• Support ESP8266 power save management.
• Support ESP8266 1MB module without OTA.
• Adjust partition table for more features.
• Adjust AT+RFPOWER command.

2. Bugfix

2.1 Wi-Fi

• Fix AT+CWLAP scans fail sometimes.
• Fix the range of AT+CIPRECONNINTV to be [1, 36000].
• Fix AT+RFPOWER set fail when Wi-Fi commands are disabled.
• Fix incorrect Wi-Fi state when AT+CWJAP failed.
• Fix missing Wi-Fi status information if AT+CIPMODE=1.

2.2 System

• Fix AT responses OK even if command ends with CR.
• Fix AT+SYSMSG parameter check.
• Fix make factory_bin generates an incorrect bin when flash works in 80MHz mode.
• Fix UART parity configuration error.

2.3 Others

• Fix incorrect last DNS configuration in command AT+CIPDNS.
• Fix the incorrect returned value of DNS command.
• Fix the incorrect response value of SNTP command.

3. Optimization

• Optimize TCP/IP process workflow.
• Optimize Wi-Fi process workflow.

v2.1.0.0_esp32

ESP32-AT Release v2.1.0.0

Documentation for Release v2.1.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.1.0.0_esp32/
You can download the firmwares to try them, which support OTA from espressif‘s server.

ESP32-WROOM-32_AT_Bin_V2.1.0.0.zip
ESP32-WROVER_AT_Bin_V2.1.0.0.zip
ESP32-PICO-D4_AT_Bin_V2.1.0.0.zip
ESP32-SOLO_AT_Bin_V2.1.0.0.zip

ESP32-AT v2.1.0.0 is a major update for ESP32-AT v2.0.0.0.

This is the list of changes since ESP32-AT Release v2.0.0.0.

SDK Update and Known issue

• Wakeup fail from light sleep

1.Feature

• esp-idf version update to release v4.0(e7ac221b)

1.1 WiFi

• AT+CWCOUNTRY: configurate and query the WiFi country code
• AT+CWSTAPROTO: set and query the 802.11 b/g/n protocol standard of station mode
• AT+CWAPPROTO: set and query the 802.11 b/g/n protocol standard of SoftAP mode
• Support automatically connect to AP in the command AT+CWMODE after changed to station mode
• Support scan mode configuration in the command AT+CWJAP

1.2 TCP/IP

• AT+CIPTCPOPT: configurate and query the TCP socket options, include SO_LINGER, TCP_NODELAY, SO_SNDTIMEO options
• Support multicast address in the command AT+CIPSTART

1.3 TLS

• AT+CIPSSLCCN: configurate and query SSL client common name(CN)
• AT+CIPSSLCSNI: configurate and query SSL client server name indication(SNI)
• AT+CIPSSLCALPN: configurate and query SSL client application layer protocol negotiation(ALPN)
• AT+CIPSSLCPSK: configurate and query SSL client pre-shared key(PSK)

1.4 BT & BLE

• Enable BLE HID commands by default
• AT+BTCOD: Configure class of BT device
• AT+BLUFI: start and stop BLUFI function(configure Wi-Fi information by ble)
• AT+BLEADVDATAEX: set BLE advertising data automatically
• Add AT+BTSCANMODE query command: query BT scan mode
• Add AT+BLEGATTSSRVCRE multiple services
• Support scan filter in the command AT+BLESCAN
• Support discoverable but not connectable mode in the command AT+BTSCANMODE
• Support retransmission for BT SPP
• Support some BT and BLE parameters store to flash
• Support BLE connection callback for user to customize it

1.5 MQTT

• Enable MQTT commands by default
• AT+MQTTCLIENTID: set and query MQTT client ID
• AT+MQTTUSERNMAE: set and query MQTT username
• AT+MQTTPASSWORD: set and query MQTT password
• Add AT+MQTTUSERCFG query command
• Add AT+MQTTCONNCFG query command
• Add AT+MQTTUSERNAME query command
• Add AT+MQTTCLIENDID query command
• Add AT+MQTTPASSWORD query command
• Add MQTT authentication method configuration in menuconfig

1.6 HTTP

• Enable HTTP commands by default
• AT+HTTPGETSIZE: get HTTP resource size
• Support custom request headers in the command AT+HTTPCLIENT

1.7 System

• AT+SLEEPWKCFG: configurate the light-sleep wakeup source and awake GPIO
• AT+SYSSTORE: control if store parameter into flash
• Separate WPS, PING, SmartConfig and MDNS commands in menuconfig
• Support cmake to compile esp-at project
• OTA use esp-tls instead of openSSL
• Add uart port configuration in the factory parameter binary
• change factory parameter version to v2

1.8 Example

• Add STM32 example for SDIO SPI AT
• Add STM32 SDIO host example

2. Bugfix

2.1 WiFi

• Fix AT+RFPOWER set failed when disable WiFi command
• Fix AT+CWLAP scan fail when WiFi is connecting
• Fix missing WiFi status information if AT+CIPMODE=1
• Fix WiFi state is error after AT+CWJAP failed
• Fix AT+CIPRECONNINTV set range [1, 36000]

2.3 UART

• Fix UART parity configuration error

2.4 BT & BLE

• Fix crash if the notification value of ble is too long
• Fix BLE service discovery works bad in multiple connections status
• Fix crash when re-create BLE services
• Fix re-enter BLE SPP fail
• Fix AT+BLESCAN=2 return OK
• Fix hid init fail
• Fix the data is lost when in BLE SPP
• Fix exit from bluetooth throughput mode failed
• Fix gatt server re-enter spp mode fail
• Fix write characteristic value fail
• Fix exit automatically reconnect status fail after terminating BLE spp mode
• Fix establish a new connection fail after ble connection timeout
• Fix BT default device name is empty
• Fix BT scan result is out of order
• Fix BT SPP exit throughput mode fail after disconnection
• Fix some MAC address informations is missing quotes

2.5 MQTT

• Fix crash when running AT+MQTTCONN?
• Fix crash when running AT+MQTTPUB if the data is too long
• Fix block when running AT+MQTTPUB
• Fix crash when MQTT is disconnected
• Fix MQTT can not automatically reconnect
• Fix crash when running AT+MQTTPUBRAW if the topic length is too long
• Fix the length of the topic is error if the received MQTT data is too large
• Fix AT+MQTTPUB failed when WiFi is reconnected
• Fix the length of the data for AT+MQTTPUBRAW is limited
• Fix the state responded by AT+MQTTCONN? is error when WiFi is reconnected
• Fix AT+MQTTCONN fails when MQTT close and re-build the link
• Fix crash when running AT+MQTTCONNCFG if mqtt is disconnected
• Fix crash when mqtt is established if Wi-Fi is reconnected

2.6 HTTP

• Fix print the data downloaded by HTTP error
• Fix check if http transport type is valid in the command AT+HTTPCLIENT
• Fix crash if some URL is special in the command AT+HTTPCLIENT

2.7 System

• Fix busy sometimes after AT+CIPSEND returned OK
• Fix incorrect information in the factory_parameter.log if module name not defined
• Fix AT command end with CR responses OK
• Fix missing "+QUIT" when quit transmission mode if AT+SYSMSG=1
• Fix AT+CIPSTATUS state unmatched when WiFi disconnected
• Fix AT+SYSMSG parameter check

2.8 DNS

• Fix the last DNS configuration is error when running AT+CIPDNS

2.9 PING

• Fix it returns ERROR when running AT+PING

Optimizations

• Optimize sockets process workflow
• Optimize AT+CIPSTATUS command process
• Optimize transmit terminal process
• check the default max tx power validity

v2.1.0.0-rc2_esp32

#ESP32-AT Relase v2.1.0.0-rc2
Documentation for Relase v2.1.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.1.0.0_esp32/
You can download the firmwares to try them, which support OTA from espressif‘s server.

ESP32-WROVER_AT_Bin_V2.1.0.0_rc2.zip
ESP32-WROOM_AT_Bin_V2.1.0.0_rc2.zip
ESP32-PICO-D4_AT_Bin_V2.1.0.0_rc2.zip
ESP32-SOLO-1_AT_Bin_V2.1.0.0_rc2.zip

ESP32-AT v2.1.0.0-rc2 is a major update for ESP32-AT v2.0.0.0.

This is the list of changes since ESP32-AT Relase v2.0.0.0.

SDK Update and Known issue

• Wakeup fail from light sleep

1.Feature

• esp-idf version update to release v4.0(e7ac221b)

1.1 WiFi

• AT+CWCOUNTRY: configurate and query the WiFi country code
• AT+CWSTAPROTO: set and query the 802.11 b/g/n protocol standard of station mode
• AT+CWAPPROTO: set and query the 802.11 b/g/n protocol standard of SoftAP mode
• Support automatically connect to AP in the command AT+CWMODE after changed to station mode
• Support scan mode configuration in the command AT+CWJAP

1.2 TCP/IP

• AT+CIPTCPOPT: configurate and query the TCP socket options, include SO_LINGER, TCP_NODELAY, SO_SNDTIMEO options
• Support multicast address in the command AT+CIPSTART

1.3 TLS

• AT+CIPSSLCCN: configurate and query SSL client common name(CN)
• AT+CIPSSLCSNI: configurate and query SSL client server name indication(SNI)
• AT+CIPSSLCALPN: configurate and query SSL client application layer protocol negotiation(ALPN)
• AT+CIPSSLCPSK: configurate and query SSL client pre-shared key(PSK)

1.4 BT & BLE

• Enable BLE HID commands by default
• AT+BTCOD: Configure class of BT device
• AT+BLUFI: start and stop BLUFI function(configure Wi-Fi information by ble)
• AT+BLEADVDATAEX: set BLE advertising data automatically
• Add AT+BTSCANMODE query command: query BT scan mode
• Add AT+BLEGATTSSRVCRE multiple services
• Support scan filter in the command AT+BLESCAN
• Support discoverable but not connectable mode in the command AT+BTSCANMODE
• Support retransmission for BT SPP
• Support some BT and BLE parameters store to flash
• Support BLE connection callback for user to customize it

1.5 MQTT

• Enable MQTT commands by default
• AT+MQTTCLIENTID: set and query MQTT client ID
• AT+MQTTUSERNMAE: set and query MQTT username
• AT+MQTTPASSWORD: set and query MQTT password
• Add AT+MQTTUSERCFG query command
• Add AT+MQTTCONNCFG query command
• Add AT+MQTTUSERNAME query command
• Add AT+MQTTCLIENDID query command
• Add AT+MQTTPASSWORD query command
• Add MQTT authentication method configuration in menuconfig

1.6 HTTP

• Enable HTTP commands by default
• AT+HTTPGETSIZE: get HTTP resource size
• Support custom request headers in the command AT+HTTPCLIENT

1.7 System

• AT+SLEEPWKCFG: configurate the light-sleep wakeup source and awake GPIO
• AT+SYSSTORE: control if store parameter into flash
• Separate WPS, PING, SmartConfig and MDNS commands in menuconfig
• Support cmake to compile esp-at project
• OTA use esp-tls instead of openSSL
• Add uart port configuration in the factory parameter binary
• change factory parameter version to v2

1.8 Example

• Add STM32 example for SDIO SPI AT
• Add STM32 SDIO host example

2. Bugfix

2.1 WiFi

• Fix AT+RFPOWER set failed when disable WiFi command
• Fix AT+CWLAP scan fail when WiFi is connecting
• Fix missing WiFi status information if AT+CIPMODE=1
• Fix WiFi state is error after AT+CWJAP failed
• Fix AT+CIPRECONNINTV set range [1, 36000]

2.3 UART

• Fix UART parity configuration error

2.4 BT & BLE

• Fix crash if the notification value of ble is too long
• Fix BLE service discovery works bad in multiple connections status
• Fix crash when re-create BLE services
• Fix re-enter BLE SPP fail
• Fix AT+BLESCAN=2 return OK
• Fix hid init fail
• Fix the data is lost when in BLE SPP
• Fix exit from bluetooth throughput mode failed
• Fix gatt server re-enter spp mode fail
• Fix write characteristic value fail
• Fix exit automatically reconnect status fail after terminating BLE spp mode
• Fix establish a new connection fail after ble connection timeout
• Fix BT default device name is empty
• Fix BT scan result is out of order
• Fix BT SPP exit throughput mode fail after disconnection
• Fix some MAC address informations is missing quotes

2.5 MQTT

• Fix crash when running AT+MQTTCONN?
• Fix crash when running AT+MQTTPUB if the data is too long
• Fix block when running AT+MQTTPUB
• Fix crash when MQTT is disconnected
• Fix MQTT can not automatically reconnect
• Fix crash when running AT+MQTTPUBRAW if the topic length is too long
• Fix the length of the topic is error if the received MQTT data is too large
• Fix AT+MQTTPUB failed when WiFi is reconnected
• Fix the length of the data for AT+MQTTPUBRAW is limited
• Fix the state responded by AT+MQTTCONN? is error when WiFi is reconnected
• Fix AT+MQTTCONN fails when MQTT close and re-build the link
• Fix crash when running AT+MQTTCONNCFG if mqtt is disconnected
• Fix crash when mqtt is established if Wi-Fi is reconnected

2.6 HTTP

• Fix print the data downloaded by HTTP error
• Fix check if http transport type is valid in the command AT+HTTPCLIENT
• Fix crash if some URL is special in the command AT+HTTPCLIENT

2.7 System

• Fix busy sometimes after AT+CIPSEND returned OK
• Fix incorrect information in the factory_parameter.log if module name not defined
• Fix AT command end with CR responses OK
• Fix missing "+QUIT" when quit transmission mode if AT+SYSMSG=1
• Fix AT+CIPSTATUS state unmatched when WiFi disconnected
• Fix AT+SYSMSG parameter check

2.8 DNS

• Fix the last DNS configuration is error when running AT+CIPDNS

2.9 PING

• Fix it returns ERROR when running AT+PING

Optimizations

• Optimize sockets process workflow
• Optimize AT+CIPSTATUS command process
• Optimize transmit terminal process
• check the default max tx power validity

v2.1.0.0-rc1_esp8266

ESP8266-AT Release v2.1.0.0-rc1

Documentation for Release v2.1.0.0-rc1 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.1.0.0_esp8266/
You can download ESP8266-IDF-AT_V2.1.0_0_RC1.zip to try it, and this firmware supports OTA from espressif‘s server.

ESP8266-AT v2.1.0.0-rc1 is a major update for ESP8266-AT v2.0.0.0.

This is the list of changes since ESP8266-AT Release v2.0.0.0.

SDK Update and Known issue

• ESP8266_RTOS_SDK version update to release v3.3(b6e861a).

1. New Feature & Change List

1.1 Wi-Fi

• AT+CWCOUNTRY: set and query the Wi-Fi country code.
• AT+CWSTAPROTO: set and query the 802.11 b/g/n protocol standard of station mode.
• AT+CWAPPROTO: set and query the 802.11 b/g/n protocol standard of SoftAP mode.
• AT+FACTPLCP: send with long or short PLCP.
• Support scan mode configuration in the command AT+CWJAP.
• Support automatically connect to the previous AP when station mode is enabled again by AT+CWMODE.

1.2 TCP/IP

• AT+CIPTCPOPT: set and query TCP socket options.
• AT+CIPSSLCCN: set and query SSL client common name.
• AT+CIPSSLCSNI: set and query SSL client server name indication.
• AT+CIPSSLCALPN: set and query SSL client application layer protocol negotiation.
• AT+CIPSSLCPSK: set and query SSL client pre-shared key.
• Support multicast in the command AT+CIPSTART.
• Support two-way authentication when create SSL.

1.3 MQTT

• AT+MQTTUSERCFG: set and query MQTT user configuration.
• AT+MQTTCLIENTID: Set and query MQTT client ID.
• AT+MQTTUSERNAME: set and query MQTT username.
• AT+MQTTPASSWORD: set and query MQTT password.
• AT+MQTTCONNCFG: set and query configuration of MQTT Connection.
• AT+MQTTCONN: Connect to MQTT Broker.
• AT+MQTTPUB: Publish MQTT Data in string format.
• AT+MQTTPUBRAW: Publish MQTT message in binary-coded format.
• AT+MQTTSUB: Subscribe MQTT Topic.
• AT+MQTTUNSUB: Unsubscribe from MQTT Topic.
• AT+MQTTCLEAN: Close the MQTT Connection.

1.4 HTTP

• AT+HTTPCLIENT: send HTTP client request.
• AT+HTTPGETSIZE: get HTTP resource size.

1.5 System

• AT+SYSLOG: enable or disable the AT error code prompt.
• AT+SYSSTORE: configure parameter store mode.
• AT+SYSTIMESTAMP: Set local timestamp.
• AT+SYSROLLBACK: roll back to the previous firmware.
• AT+SYSFLASH: set and query user partitions in Flash.
• Support make SILENCE=1 to disable log for saving flash space.
• Support ESP8266 power save management.
• Support ESP8266 1MB module without OTA.
• Adjust partition table for more features.
• Adjust AT+RFPOWER command.

2. Bugfix

2.1 Wi-Fi

• Fix AT+CWLAP scans fail sometimes.
• Fix the range of AT+CIPRECONNINTV to be [1, 36000].
• Fix AT+RFPOWER set fail when Wi-Fi commands are disabled.
• Fix incorrect Wi-Fi state when AT+CWJAP failed.
• Fix missing Wi-Fi status information if AT+CIPMODE=1.

2.2 System

• Fix AT responses OK even if command ends with CR.
• Fix AT+SYSMSG parameter check.
• Fix make factory_bin generates an incorrect bin when flash works in 80MHz mode.
• Fix UART parity configuration error.

2.3 Others

• Fix incorrect last DNS configuration in command AT+CIPDNS.
• Fix the incorrect returned value of DNS command.
• Fix the incorrect response value of SNTP command.

3. Optimization

• Optimize TCP/IP process workflow.
• Optimize Wi-Fi process workflow.

v2.1.0.0-rc1_esp32

ESP32-AT Release v2.1.0.0-rc1

Documentation for Release v2.1.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.1.0.0_esp32/

ESP32-AT v2.1.0.0-rc1 is a major update for ESP32-AT v2.0.0.0.

This is the list of changes since ESP32-AT releases v2.0.0.0.

SDK Update and Known issue

• It may wakeup fail from light sleep.

1.Feature

• ESP-IDF version update to release v4.0(e7ac221b).

1.1 Wi-Fi

• AT+CWCOUNTRY: configurate and query the WiFi country code.
• AT+CWSTAPROTO: set and query the 802.11 b/g/n protocol standard of station mode.
• AT+CWAPPROTO: set and query the 802.11 b/g/n protocol standard of SoftAP mode
• Support automatically connect to the previous AP when station mode is enabled again by AT+CWMODE.
• Support scan mode configuration in the command AT+CWJAP.

1.2 TCP/IP

• AT+CIPTCPOPT: configurate and query the TCP socket options, include SO_LINGER, TCP_NODELAY, SO_SNDTIMEO options.
• Support multicast address in the command AT+CIPSTART.

1.3 TLS

• AT+CIPSSLCCN: configurate and query SSL client common name(CN).
• AT+CIPSSLCSNI: configurate and query SSL client server name indication(SNI).
• AT+CIPSSLCALPN: configurate and query SSL client application layer protocol negotiation(ALPN).
• AT+CIPSSLCPSK: configurate and query SSL client pre-shared key(PSK).

1.4 BT & BLE

• Enable BLE HID commands by default.
• AT+BTCOD: Configure class of BT device.
• AT+BLUFI: start and stop BLUFI function(configure Wi-Fi information by BLE).
• AT+BLEADVDATAEX: set BLE advertising data automatically.
• Add query command of AT+BTSCANMODE, to query BT scan mode.
• Support multiple services in AT+BLEGATTSSRVCRE.
• Support scan filter in command AT+BLESCAN.
• Support discoverable but not connectable mode in command AT+BTSCANMODE.
• Support BT Pair Compare key.
• Support retransmission for BT SPP.
• Support store some BT and BLE parameters to flash.
• Support BLE connection callback for user to customize it.

1.5 MQTT

• Enable MQTT commands by default.
• AT+MQTTCLIENTID: set and query MQTT client ID
• AT+MQTTUSERNMAE: set and query MQTT username
• AT+MQTTPASSWORD: set and query MQTT password
• Add query command for AT+MQTTUSERCFG.
• Add query command for AT+MQTTCONNCFG.
• Add query command for AT+MQTTUSERNAME.
• Add query command for AT+MQTTCLIENDID.
• Add query command for AT+MQTTPASSWORD.
• Add MQTT authentication method configuration in menuconfig.

1.6 HTTP

• Enable HTTP commands by default.
• AT+HTTPGETSIZE: get HTTP resource size.
• Support custom request headers in the command AT+HTTPCLIENT.

1.7 System

• AT+SLEEPWKCFG: configurate the light-sleep wakeup source and awake GPIO.
• AT+SYSSTORE: to set whether store parameters into flash or not.
• Separate WPS, PING, SmartConfig and MDNS commands in menuconfig.
• Support cmake to compile esp-at project.
• Use ESP-TLS instead of openSSL when OTA via SSL.
• Add UART port configuration in the factory parameter binary.
• Change factory parameter version to v2.

1.8 Example

• Add STM32 example for SDIO SPI AT.
• Add STM32 SDIO host example.

2. Bugfix

2.1 Wi-Fi

• Fix AT+RFPOWER set fail when Wi-Fi commands are disabled.
• Fix AT+CWLAP scan fail while it is connecting Wi-Fi.
• Fix incorrect Wi-Fi state when AT+CWJAP failed.
• Fix the range of AT+CIPRECONNINTV to be [1, 36000].
• Add missing Wi-Fi status information if AT+CIPMODE=1.

2.3 UART

• Fix UART parity configuration error.

2.4 BT & BLE

• Fix crash issue when the BLE notification value is too long.
• Fix crash issue when re-create BLE services.
• Fix re-enter BLE SPP fail.
• Fix AT+BLESCAN incorrect parameter issue.
• Fix HID init fail.
• Fix data lost issue in BLE SPP.
• Fix exit from bluetooth throughput mode failed
• Optimize BLE service discovery in multiple connections status.

2.5 MQTT

• Fix MQTT crash issue.
• Fix a block issue of AT+MQTTPUB
• Fix MQTT can not automatically reconnect.
• Fix incorrect topic length if the received MQTT data is too long.
• Fix AT+MQTTPUB fail when Wi-Fi is reconnected.
• Fix the limited data length of AT+MQTTPUBRAW.
• Fix the incorrect state responded by AT+MQTTCONN? when Wi-Fi is reconnected.
• Fix AT+MQTTCONN fail when MQTT closes and re-builds the link.

2.6 HTTP

• Fix print error of HTTP-download data.
• Add check of http transport type in the command AT+HTTPCLIENT.
• Fix a crash issue of some special URL in the command AT+HTTPCLIENT.

2.7 System

• Fix probable busy issue after AT+CIPSEND returns OK.
• Fix incorrect information in the factory_parameter.log if module name is not defined.
• Fix an AT command response error.
• Fix incorrect AT+CIPSTATUS state when Wi-Fi disconnected.
• Add missing "+QUIT" message when quit transmission mode and AT+SYSMSG=1

2.8 DNS

• Fix an issue of incorrect last DNS configuration in command AT+CIPDNS.

2.9 PING

• Fix an error of AT+PING

Optimizations

• Optimize sockets process workflow.
• Optimize AT+CIPSTATUS command process.
• Optimize transmit terminal process.
• Check the default max TX power's validity.

v2.0.0.0_esp32

ESP32_AT_V2.0.0.0 Release Note

Documentation:
esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

Feature

• Update ESP-IDF to version 3.3(6ccb4cf5).

Base command

• AT+SYSROLLBACK: Roll back to the previous firmware.
• AT+SYSTIMESTAMP: Set local time stamp.

Wi-Fi command

• AT+CWHOSTNAME: Configures the host name of ESP station
• AT+CWQIF: Disconnect station from the ESP softAP.
• Update command AT+CWJAP, add a parameter of listen interval

TCPIP command

• AT+CIPSTARTEX: Establishes TCP connection, UDP transmission or SSL connection by auto assigning ID.
• AT+CIPSSLCCONF: Config SSL client.
• AT+CIPRECONNINTV: Set the interval of auto-reconnecting in Wi-Fi UART passthrough mode.
• 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. The configuration will be saved in flash
• Update command AT+CIUPDATE, support SSL OTA and version parameter

BLE command

• AT+BLESETKEY: Set BLE static pair key
• AT+BLEHIDINIT: BLE HID device profile initialization
• AT+BLEHIDKB: Send BLE HID Keyboard information
• AT+BLEHIDMUS: Send BLE HID mouse information
• AT+BLEHIDCONSUMER: Send BLE HID consumer information

Classic Bluetooth command

• AT+BTINIT : Classic Bluetooth initialization
• AT+BTNAME : Sets BT device's name
• AT+BTSCANMODE : Sets BT SCAN mode
• AT+BTSTARTDISC : Start BT discovery
• AT+BTSPPINIT : Classic Bluetooth SPP profile initialization
• AT+BTSPPCONN : Establishes SPP connection
• AT+BTSPPDISCONN : Ends SPP connection
• AT+BTSPPSTART : Start Classic Bluetooth SPP profile
• AT+BTSPPSEND : Sends data to remote bt spp device
• AT+BTA2DPINIT : Classic Bluetooth A2DP profile initialization
• AT+BTA2DPCONN : Establishes A2DP connection
• AT+BTA2DPDISCONN : Ends A2DP connection
• AT+BTA2DPSRC : Set or query the audio file URL
• AT+BTA2DPCTRL : control the audio play
• AT+BTSECPARAM :Set and query the Classic Bluetooth security parameters
• AT+BTKEYREPLY :Input the Simple Pair Key
• AT+BTPINREPLY :Input the Legacy Pair PIN Code
• AT+BTSECCFM: Reply the confirm value to the peer device in the legacy connection stage
• AT+BTENCDEV : Query BT encryption device list
• AT+BTENCCLEAR : Clear BT encryption device list

MQTT command

• AT+MQTTUSERCFG : Set MQTT User Config
• 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 command

• AT+HTTPCLIENT - Send HTTP Client Request

Bugfix

• fix: It may crash if AT command ends without '\r\n'
• fix: Sometimes it may fail to quit from UART-WiFi passthrough mode
• fix: AT+CIPSTART does not work if just enable ethernet

Optimizations

• Add "\r\n" to the end of the +IPD for that MCU distinguishes the new command easily

v2.0.0.0_esp8266

ESP8266_AT_V2.0.0.0 Release Note

This is the first release of ESP8266 RTOS AT firmware, which supports AT commands through UART. Here is a list of AT commands. More details please refer to README.md

Basic AT Commands List.

• AT : Tests AT startup.
• AT+RST : Restarts a module.
• AT+GMR : Checks version information.
• AT+GSLP : Enters Deep-sleep mode.
• 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+SLEEP : Sets the sleep mode.
• AT+SYSRAM : Checks the remaining space of RAM.
• AT+SYSMSG : Set message format.
• AT+RFPOWER : Set RF TX Power.

Wi-Fi AT Commands List

• 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 ESP32 SoftAP.
• AT+CWLIF : Gets the Station IP to which the ESP32 SoftAP is connected.
• AT+CWDHCP : Enables/disables DHCP.
• AT+CWDHCPS : Sets the IP range of the ESP32 SoftAP DHCP server. Saves the setting in flash.
• AT+CWAUTOCONN : Connects to the AP automatically on power-up.
• AT+CIPSTAMAC : Sets the MAC address of ESP32 Station.
• AT+CIPAPMAC : Sets the MAC address of ESP32 SoftAP.
• AT+CIPSTA : Sets the IP address of ESP32 Station.
• AT+CIPAP : Sets the IP address of ESP32 SoftAP.
• AT+CWSTARTSMART : Starts SmartConfig.
• AT+CWSTOPSMART : Stops SmartConfig.
• AT+WPS : Enables the WPS function.
• AT+MDNS : Configurates the MDNS function

TCP/IP-Related AT Commands List

• AT+CIPSTATUS : Gets the connection status.
• AT+CIPDOMAIN : DNS function.
• AT+CIPSTART : Establishes TCP connection, UDP transmission or SSL connection.
• 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.

v1.2.0.0

ESP32 AT V1.2.0.0 Release Note

Documentation

• ESP32 AT Instruction Set and Examples
• ESP32 AT 指令集与使⽤示例

Features

• Update version number to ESP-IDF v3.2.0
• Solve an issue that an ESP device working in SoftAP may reboot unexpectedly under certain special environment.
• Support multiple BLE connections, with a maximum connection number of 3.

Bug fixes

• Fix a bug that an SSL connection is sometimes established even when the CA certificate is incorrect.
• Fix a bug that the auto connecting sometimes fails in the UART-WiFi throughput mode.
• Fix a bug that the URC message that indicates Wi-Fi is disconnected may get lost, when the Wi-Fi router is turned off unexpectedly.
• Fix a bug that the BLE sometimes fails to write Characteristic values, when this remote Characteristic supports multiple properties.
• Fix a bug that the BLE connection parameters sometimes are still inquired even when the BLE connection is ended already.
• Fix a bug that is related to setting the BLE scan parameters.
• Fix a bug that the command of establishing a BLE connection may get stuck.
• Revise the document for the description of the BLE security parameter.