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.