v2.2.0.0_esp32

v2.2.0.0 [ESP32 AT]

ESP32-AT Release v2.2.0.0

Documentation for v2.2.0.0 is available at https://docs.espressif.com/projects/esp-at/en/release-v2.2.0.0_esp32/
You can download the firmwares to use them, which support OTA from espressif‘s server.

ESP32-WROOM_AT_V2.2.0.0.zip
ESP32-WROVER_AT_V2.2.0.0.zip
ESP32-SOLO_AT_V2.2.0.0.zip
ESP32-PICO-D4_AT_V2.2.0.0.zip
ESP32-MINI-1_AT_Bin_V2.2.0.0.zip

ESP32-AT v2.2.0.0 is a major update for ESP32-AT v2.1.0.0.

Changelog

This is the list of changes since release v2.1.0.0:

Breaking Changes

esp-idf version updated to release v4.2 (efa6eca)
Compiler upgraded from v5.2.0 to v8.4.0
AT+CIPDOMAIN: Double quotation marks are added to the string parameters in the response
AT+BLESCAN: Double quotation marks are added to the mac address parameter in the response
AT commands supports IPv6 network now

Known Issue

Before start the softAP, AT+DHCP=0,2 command cannot disable DHCP (please disable DHCP after the softAP started)
It may fail to create BT connection again after BT disconnect

1. Feature

1.1 Wi-Fi

AT+CWRECONNCFG: Support to configure Wi-Fi reconnect interval and maximum retry times
AT+CWLAPOPT: Support to filter the scanned result by rssi and authmode
AT+CWJAP: Limit the range of listen interval to [1, 100]
AT+WPS: Support authmode floor configuration
AT+CWSMARTSTART: Support authmode floor configuration
AT+CWLAP: Support the information of 802.11 b/g/n in the response
AT+CWJAP: Support to configure timeout and pmf, and connect the last recorded AP
AT+CWSTATE: New Command to query Wi-Fi state

1.2 TCP/IP

AT+SYSMSG: Extended BIT2 parameter for passthrough mode
AT+CIUPDATE: Support to upgrade custom partitions and asynchronous OTA
AT+PING: Added an error message TIMEOUT for incorrect DNS
Modified tcp mss and wnd to improve compatibility
- Modified tcp wnd, from 5744 to 5760
- Modified tcp snd buf, from 5744 to 5760
Disabled setting AT+CIPSSLCCN, AT+CIPSSLCSNI, AT+CIPSSLCALPN, AT+CIPSSLCPSK if the link is already connected
AT+CIPSERVER: Added close_all_clients parameter to close all connections with the server created by AT+CIPSERVER
The following AT commands supports IPv6 since v2.2.0.0
- AT+CIPV6
- AT+CIPSTATUS
- AT+CIPDOMAIN
- AT+CIPSTART
- AT+CIPSTARTEX
- AT+CIPSERVER
- AT+SAVETRANSLINK
- AT+PING
- AT+CIPDNS
- AT+CIPSTA
- AT+CIPAP
- AT+CIFSR

1.3 Application Layer

AT+CIPSNTPCFG: Support to configure half timezone offset
AT+MQTTCONNCFG, AT+MQTTPUB, AT+MQTTPUBRAW, AT+MQTTPUB, AT+MQTTUNSUB command supports 128 bytes topic
AT+WEBSERVER: New command to support Wi-Fi provisioning via SoftAP and Captive Portal
AT+HTTPCLIENT: Support chunked data
AT+HTTPCLIENT: content-type parameter can be omitted now
AT+HTTPCPOST: New command to support long data post
Added qcloud support

1.4 System

AT+CMD: New command to query the supported AT commands list
AT+USERRAM: New command to alloc ram for host mcu to use it
AT+SYSREG: New command to read and write registers
AT+SYSRAM: Support to query the minimum heap size
AT+GMR: Added chip platform information in the response
Added ESP32-D2WD, ESP32-MINI-1 module support

1.5 Driver

Added the following new 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

1.6 Bluetooth

AT+BTPOWER: Support to set BT tx power
AT+BLUFI: Support authmode floor configuration
AT+SYSMSG: Extended BIT2 parameter to support BLE and BT SPP messages
GATT Server supports service discovery
GATT client supports to create a local service
BLE supports to send long length packets of notify and indicate

2. Bugfix

2.1 Wi-Fi

Fixed AT+CWLAP issues
- Fixed AT+CWLAP returned ERROR when total active scan time was more than 15 seconds
- Fixed AT+CWLAP did not return ap in the response sometimes
- Fixed AT+CWLAP blocked more the 10 seconds sometimes
- Fixed AT+CWLAP rssi filter parameter could not work sometimes
- Fixed AT+CWLAP could not scan valid ap by ssid and bssid
Fixed the issue that AT+CWMODE=1,1 could not auto-connect to AP when Wi-Fi mode switched from WIFI_MODE_NULL
Fixed the issue that AT+CWJAP may return the wrong error number
Fixed AT+WPS failed on multiple ap credentials case
Fixed AT+CIPSTA/AT+CIPAP could set the wrong IP address due to the lack of rigorous address check

2.2 TCP/IP

Fixed wrong state of AT+CIPSTATUS command
Fixed data error in passthrough mode with 2Mbps baud rate
Fixed AT+CIPRECONNINTV did not work immediately
Fixed that the received data was incomplete if the data was too large in softAP mode
Fixed AT+CIPSENDEX data was truncated in advance
Fixed AT+CIPSEND returned ERROR sometimes
Fixed crash when link id < 0
Fixed AT+CIPMUX=0 set error when all connections closed
Fixed SSL link may not disconnect when IP address changed
Fixed potential blocking when hardware flow control enabled
Fixed an issue of mistakenly printing "CLOSED" or "+LINK_CONN"
Fixed tcp server could not work again if the link closed and opened repeatedly
Fixed AT+SAVETRANSLINK could not work sometimes
Fixed AT+CIPSERVER could set mode to 2
Fixed AT+CIPSTART SSL connect failed if disabled ALPN by AT+CIPSSLCALPN=1,0
Fixed tcp send data lost in passthrough mode
Fixed AT+CIUPDATE failed over SSL if the version parameter was specified

2.3 Application Layer

Fixed AT+MQTTCONN returned ERROR when checking common name
Fixed AT+MQTTUSERCFG? crash after MQTT connected
Fixed AT+CIPSSLCALPN query command caused to reboot due to memory coverage
Fixed AT+MQTTCONN may cause wdt reset when input some special hostname
Fixed the issue that AT+HTTPCLIENT url failed to be omitted

2.4 System

Fixed compile error if disable BT and BLE
Fixed compile error when only use BluFi
Fixed AT+GSLP did not return OK sometimes
Fixed AT+GSLP may return ERROR when setting a long deep sleep time
Fixed AT+GSLP crash on PICO-D4 module
Fixed wrong uart pins disabled before deep-sleep
Fixed AT+SLEEPWKCFG did not check GPIO configuration issue
Fixed the crash when sending command with one redundant character "" before "\r\n"
Fixed AT+SLEEP=2 returned OK in softap mode
Fixed AT+SLEEP=0 cause to crash
Fixed silence firmware crash sometimes
Fixed build fail when disable customized partition
Fixed sdio read data error when length bigger than sdio list
Fixed light sleep could not be woken up by GPIO due to DFS

2.5 Bluetooth

Fixed the failure to re-enter GATT server SPP mode
Fixed the failure to write characteristic value
Fixed that BLE connection timeout resulted in no new connection being created
Fixed that BT default device name was empty
Fixed that BT failed to output scan results sometimes
Fixed the failure to exit the BT SPP mode even after disconnection
Fixed that some MAC address information was missing quotes
Fixed that BT device name overlength issue
Fixed that BT & BLE deinit failed
Fixed that classic BT could not discover some device names
Fixed the failure to init BLE parameters: BLE device name, BLE advertising parameters, BLE scan parameters and response, and BLE connection parameters
Fixed the incorrect message of AT+BTSTARTDISC
Fixed the crash caused by deiniting A2DP profile
Fixed the failure to detect incorrect BLE address type
Added the message for A2DP connection failure
Fixed the blufi name overlength issue
Fixed the crash caused by multi-connection
Fixed the crash caused by BLE connection failure
Fixed the crash caused by disabling modem sleep
Fixed the crash caused by deiniting BLE stack

3. Optimization

Added build.py script to simplify the compilation process and supported windows OS compilation
Refactored application directory
Removed deprecated GNU make
Removed cmake warnings
Supported spi & sdio example cmake
Removed at_http_webserver example

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