v1.1.3.0

ESP32 AT V1.1.3.0 Release Note

Documentation:
esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

Features

• Update ESP-IDF to version 3.0.7, and solve the reboot issue of an ESP device when it's in softAP mode under certain special environment.
• Add factory parameter partition to adapt the AT firmware to different modules without recompilation.

Bug fixes

• Fix the bug of the possible system crash when TCP server is closed.

v1.1.2.0

ESP32 AT V1.1.2.0 Release Note

Documentation:
esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

Features

• Update ESP-IDF to version 3.0.3(054e82b4).

Bug fixes

• Fix an issue that system will crash if BLE scans too many devices.
• Fix an issue that system will crash if ‘\r\n’ is missed in AT command as an end mark.

v1.1.1.0

ESP32 AT V1.1.1.0 Release Note

Documentation:
esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

WiFi AT

Bug fixes

• Fix bug that ESP32-AT get crushed when been sent AT with 2 "\r\n"

v1.1.0.0

ESP32 AT V1.1.0.0 Release Note

Documentation:
esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

BLE AT

Features

AT+BLESPPCFG : Sets BLE spp parameters
AT+BLESPP : Enter BLE spp mode
AT+BLESECPARAM : Set BLE encryption parameters
AT+BLEENC : Initiate BLE encryption request
AT+BLEENCRSP : Grant security request access.
AT+BLEKEYREPLY : Reply the key value to the peer device in the lagecy connection stage.
AT+BLECONFREPLY : Reply the comfirm value to the peer device in the lagecy connection stage.
AT+BLEENCDEV : Query BLE encryption device list
AT+BLEENCCLEAR : Clear BLE encryption device list

Bug fixes

• Fix bug that gatt client exception after disconnect
• Fix gatt Server did not get correct write result code
• Fix gatt cmd will not report error when disconnected
• Fix ble incorrect optional parameter checking
• Fix ble incorrect param type checking
• Fix ble read/write to char/descriptor without permission did not return error
• Fix ble Set ATTR value fail
• Fix ble 128bit uuid crash
• Fix bug that when deinit the ble, do not free gatts list
• Fix ble autoconnect in passthrough mode

Optimizations

• support char write long and add param for multi connection
• support gatts initiate disconnect from client
• support multi conn for server
• update connection param command support gatt server

WiFi AT

Features

AT+RFPOWER : Set RF TX Power
AT+CIPSSLCCONF : Config SSL client

Bug fixes

• Fix bug that UDP packet loss is serious when transparent transmission
• Fix bug that print error log when startup
• Fix bug restart problem after boot-strap
• Fix bug that reconnect to TCP server twice in passthrough mode
• Fix bug the throughput is very low when uart baudrate is 2000000
• Fix bug that ssl connection doesn't reconnect to server when disconnected
• Fix bug the current is about 77uA after deep sleep
• Fix ping repeatedly cause reboot
• Fix bug It crashes when UART baudrate and mcu mismatch
• Fix bug tcp server will be closed when connections reach max
• Fix bug that crash if the parameter number of AT command is less than esp_at_get_para_as_digit parameter number
• Fix bug that it doesnot work when configure server max connection
• Fix bug that it print CLOSED after link disconnect when in transparent transmition
• Fix bug that remote port is incorrect.
• Fix bug the type of execution command parses error
• Fix Bug that it will reboot after restarting if setting AT+SAVETRANSLINK
• Fix Bug that works bad if delayed among each character when sending command
• Fix bug it crash when smartconfig,if SSID length is 32
• Fix connected UDP display wrong IP
• Fix bug that SSL server accepts fail
• Fix bug that Print 'CONNECT' when ssl connect fail
• Set the range of AT+CWLAPOPT
• Fix bug that Print wifi status when wifi status change
• Fix bug that Sometimes AT+CIPCLOSE cannot return
• Fix bug that TCP doesn't disconnect when WiFi station disconnected
• Fix bug that the static param conning_flag was not reset after deinit
• Fix bug that WiFi reconnect after AT+CWQAP
• Fix Delay time is incorrect
• Fix Dns servers change when connecting different AP

Optimizations

• Set Default uart is flow control,and add uart query cmd
• Add AT command line terminator
• Add esp_at_custom_net_ops_regist in esp_at.h to callback some status about socket
• add query cmd for blescanparam
• Add multi-ca support for ssl client
• Add save SSID when using WPS
• Add prefix in the string by AT+CWLIF responsed
• Optimize ssl memory in AT module

v1.0.0.0

ESP32 AT V1.0 Release Note

Documentation:
esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

BLE AT

• AT+BLEINIT : Bluetooth Low Energy (BLE) initialization
• AT+BLEADDR : Sets BLE device's address
• AT+BLENAME : Sets BLE device's name
• AT+BLESCANPARAM : Sets parameters of BLE scanning
• AT+BLESCAN : Enables BLE scanning
• AT+BLESCANRSPDATA : Sets BLE scan response
• AT+BLEADVPARAM : Sets parameters of BLE advertising
• AT+BLEADVDATA : Sets BLE advertising data
• AT+BLEADVSTART : Starts BLE advertising
• AT+BLEADVSTOP : Stops BLE advertising
• AT+BLECONN : Establishes BLE connection
• AT+BLEDISCONN : Ends BLE connection
• AT+BLEDATALEN : Sets BLE data length
• AT+BLECFGMTU : Sets BLE MTU length
• AT+BLEGATTSSRVCRE : Generic Attributes Server (GATTS) creates services
• AT+BLEGATTSSRVSTART : GATTS starts services
• AT+BLEGATTSSRV : GATTS discovers services
• AT+BLEGATTSCHAR : GATTS discovers characteristics
• AT+BLEGATTSNTFY : GATTS notifies of characteristics
• AT+BLEGATTSIND : GATTS indicates characteristics
• AT+BLEGATTSSETATTR : GATTS sets attributes
• AT+BLEGATTCPRIMSRV : Generic Attributes Client (GATTC) discovers primary services
• AT+BLEGATTCINCLSRV : GATTC discovers included services
• AT+BLEGATTCCHAR : GATTC discovers characteristics
• AT+BLEGATTCRD : GATTC reads characteristics
• AT+BLEGATTCWR : GATTC writes characteristics

System AT

Bug fixes

• Fix a bug that error log is printed when startup
• Fix restart problem after boot-strap
• Fix crash after use hardware AES driver

Optimizations

• AT+FS : fatfs is supported
• Add custom partitions table
• Rename at customize area and add command to operate partition
• Set frequency 80Mhz to reduce power consumption
• Add ESP32 AT custom partitions table
• Add firmware version in AT+GMR
• Change the configuration of UART flow control
• Enable ble in sdkconfig.defaults
• partition: Adjust partition table for ble
• Set xtal freq to be 40Mhz by default

WiFi AT

Bug fixes

• Fix a bug that fail to send UDP packet in some cases
• Fix wrong IP format
• Fix error server timeout
• Fix AT+CWQAP shows OK in ap mode
• Fix a bug that system may crash if the SSID length is 32 in smartconfig
• Fix a bug that server timeout does not work for SSL connection in some scenarios
• Fix a bug that "+IPD" is apart from data
• Fix a bug that sometimes AT+CIPCLOSE cannot return

Optimizations

• AT+CWSTARTSMART : Airkiss + ESP-TOUCH
• AT+PING : ping function
• AT+MDNS : mdns function
• AT+CIPSERVERMAXCONN : set the max connections allowed by server
• Add AT+CWMODE=0 to stop WiFi
• Add prefix in the string by AT+CWLIF responsed
• Modify the information of query server
• Support more ssl protocal version
• SSL client supports transparent transmission
• Support ssl server and add AT+CIPSERVER? command
• Optimize AT+CIUPDATE to support ssl update
• Add parameter for AT+CIUPDATE to specify ota version
• Configure six sockets by default
• Modify README of tools for AT, and provide ssl cert bin for testing
• Optimize UART-WiFi passthrough mode for autoconnection and UDP transmission
• Optimize smartconfig to save SSID and password into flash
• Optimize SSL connection.

Tools

• Add tool for PKI bin
• Add GATT service bin generation tool

v0.10.0.0

ESP32_AT_V0.10.0.0 Release Note

This is the first release of ESP32 AT firmware, which supports AT commands through UART.

Here is a list of AT commands. More details are in documentation esp32_at_instruction_set_and_examples_en.pdf or
esp32_at_instruction_set_and_examples_cn.pdf.

Basic AT Commands

• 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 : UART configuration.
• 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.

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 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.

TCP/IP-Related AT Commands

• 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 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+CIUPDATE : Updates the software through Wi-Fi.
• AT+CIPDINFO : Shows remote IP and remote port with +IPD.
• AT+CIPSNTPCFG : Configures the time domain and SNTP server.
• AT+CIPSNTPTIME : Queries the SNTP time.