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.