Released Firmware
Introduction
Note
Before using the AT firmware below, please read the Disclaimer carefully and comply with its terms and precautions.
If you are unsure whether your module can use the default AT firmware, please first read the AT Released Firmware Differences section. This section describes the supported command sets, hardware configurations, and supported modules of the ESP32-C3 AT firmware, helping you confirm if your module’s hardware configuration is suitable for using the default AT firmware.
If you need to modify the following configurations, you can generate a new firmware by modifying the AT firmware using the at.py Tool.
ESP32-C3-MINI-1 Series
The firmware versions below are compatible with ESP32-C3 chip series from ECO0 (Rev v0.0) to ECO7 (Rev v1.1), inclusive of both ECO0 and ECO7 variants.
v4.1.1.0 ESP32-C3-MINI-1-AT-V4.1.1.0.zip (Recommended)
v4.1.0.0 ESP32-C3-MINI-1-AT-V4.1.0.0.zip
v3.3.0.0 ESP32-C3-MINI-1-AT-V3.3.0.0.zip
The firmware versions below are compatible with ESP32-C3 chip series from ECO0 (Rev v0.0) to ECO4 (Rev v0.4), inclusive of both ECO0 and ECO4 variants.
v3.2.0.0 ESP32-C3-MINI-1-AT-V3.2.0.0.zip
v2.4.2.0 ESP32-C3-MINI-1-AT-V2.4.2.0.zip
v2.4.1.0 ESP32-C3-MINI-1-AT-V2.4.1.0.zip
v2.4.0.0 ESP32-C3-MINI-1-AT-V2.4.0.0.zip
v2.3.0.0 ESP32-C3-MINI-1-AT-V2.3.0.0.zip
v2.2.0.0 ESP32-C3-MINI-1-AT-V2.2.0.0.zip
Subscribe to AT Releases
Please refer to the Subscribe to AT Releases documentation to subscribe to our version release notifications and stay updated on the latest releases.
AT Released Firmware Differences
This section compares the ESP32-C3 AT released firmwares in supported command sets, hardware, and supported modules.
ESP32-C3-MINI-1-AT-Vx.x.x.x.zip (referred to as MINI-1 Bin in this section);
Supported Command Set
The table lists which command set is supported by default in the official AT firmware applicable to ESP32-C3 series of modules (marked with 
), which is not supported by default but can be supported after configuration of the ESP-AT project (marked with 
), and which is not supported at all (marked with 
). Note that the command set that is not shown in this table is not supported either. Applicable firmware that has not been officially released requires compilation by yourself. Those self-compiled firmware cannot be upgraded OTA from Espressif official server.
Command Set |
MINI-1 Bin |
|---|---|
base |
|
user |
|
Wi-Fi |
|
TCP-IP |
|
mDNS |
|
WPS |
|
SmartConfig |
|
ping |
|
MQTT |
|
HTTP |
|
Bluetooth LE |
|
Bluetooth LE HID |
|
BluFi |
|
FileSystem |
|
driver |
|
WPA2 enterprise |
|
Web server |
|
WebSocket |
|
OTA |
|
Hardware Differences
Hardware |
MINI-1 Bin |
|---|---|
Flash |
4 MB |
PSRAM |
|
UART Pins [1] |
TX: 7
RX: 6
CTS: 5
RTS: 4
|
Supported Modules
The table below lists the modules or chips that are default supported by the officially released ESP32-C3 series AT firmware (indicated by ), the modules that are not supported by default but can be modified to be supported using the at.py Tool (indicated by ), and the modules that are not supported at all (indicated by ). For modules that are not supported at all, you can refer to Compile ESP-AT Project Locally to modify the configuration as needed for support.
Module/Chip |
MINI-1 Bin |
|---|---|
ESP32-C3-MINI-1/1U |
|
ESP32-C3-WROOM-02/02U |
|
ESP8685-WROOM-01 |
|
ESP8685-WROOM-03 |
|
ESP8685-WROOM-04 |
|
ESP8685-WROOM-05 |
|
ESP8685-WROOM-06 |
|
ESP8685-WROOM-07 |
|