ESP-AT Firmware Differences

[中文]

This document compares the differences among AT firmwares of a certain ESP32-C3 series in terms of the supported commands set, hardware, and supported modules.

ESP32-C3 Series

This section describes the differences among AT firmwares of ESP32-C3 series, including

  • ESP32-C3-MINI-1_AT_Bin (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 icon-green-check), which is not supported by default but can be supported after configuration of the ESP-AT project (marked with icon-orange-check), and which is not supported at all (marked with icon-red-cross). 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

icon-green-check

user

icon-green-check

wifi

icon-green-check

net

icon-green-check

MDNS

icon-green-check

WPS

icon-green-check

smartconfig

icon-green-check

ping

icon-green-check

MQTT

icon-green-check

http

icon-green-check

FS

icon-orange-check

driver

icon-orange-check

WPA2

icon-orange-check

WEB

icon-orange-check

OTA

icon-green-check

Hardware Differences

Hardware

MINI-1 Bin

Flash

4 MB

PSRAM

icon-red-cross

UART Pins 1

TX: 7
RX: 6
CTS: 5
RTS: 4
1

UART pins can be customized. See How to Set AT Port Pins for details.

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 icon-green-check), the modules that are not supported by default but can be modified to be supported using the at.py Tool (indicated by icon-orange-check), and the modules that are not supported at all (indicated by icon-red-cross). 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

icon-green-check

ESP32-C3-WROOM-02/02U

icon-green-check

ESP8685-WROOM-01

icon-green-check

ESP8685-WROOM-03

icon-green-check

ESP8685-WROOM-04

icon-green-check

ESP8685-WROOM-05

icon-green-check

ESP8685-WROOM-06

icon-green-check

ESP8685-WROOM-07

icon-orange-check