ESP-AT Firmware Differences

[中文]

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

ESP32 Series

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

  • ESP32-WROOM-32_AT_Bin (referred to as WROOM Bin in this section);

  • ESP32-WROVER-32_AT_Bin (referred to as WROOM Bin in this section);

  • ESP32-PICO-D4_AT_Bin (referred to as PICO-D4 Bin in this section);

  • ESP32-SOLO-1_AT_Bin (referred to as SOLO-1 Bin in this section);

  • ESP32-MINI-1_AT_Bin (referred to as MINI-1 Bin in this section);

  • ESP32-D2WD_AT_Bin (referred to as D2WD Bin in this section);

  • ESP32-QLOUD_AT_Bin (referred to as QCLOUD 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 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

WROOM Bin

WROVER Bin

PICO-D4 Bin

SOLO-1 Bin

MINI-1 Bin

D2WD Bin

QCLOUD Bin

base

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

user

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

wifi

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

net

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

MDNS

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

WPS

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

smartconfig

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

ping

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

MQTT

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

http

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

ble

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

ble hid

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

blufi

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

bt spp

icon-orange-check

icon-green-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

bt a2dp

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

ethernet

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

FS

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

driver

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

WPA2

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

WEB

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

OTA

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

qcloud IoT

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-orange-check

icon-green-check

Hardware Differences

Hardware

WROOM Bin

WROVER Bin

PICO-D4 Bin

SOLO-1 Bin

MINI-1 Bin

D2WD Bin

QCLOUD Bin

Flash

4 MB

4 MB

4 MB

4 MB

4 MB

2 MB

4 MB

PSRAM

icon-red-cross

8 MB

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

UART Pins 1

TX: 17
RX: 16
CTS: 15
RTS: 14
TX: 22
RX: 19
CTS: 15
RTS: 14
TX: 22
RX: 19
CTS: 15
RTS: 14
TX: 17
RX: 16
CTS: 15
RTS: 14
TX: 22
RX: 19
CTS: 15
RTS: 14
TX: 22
RX: 19
CTS: 15
RTS: 14
TX: 17
RX: 16
CTS: 15
RTS: 14
1

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

Supported Modules

The table lists the ESP modules or chips that each AT firmware supports.

Module/Chip

WROOM Bin

WROVER Bin

PICO-D4 Bin

SOLO-1 Bin

MINI-1 Bin

D2WD Bin

QCLOUD Bin

ESP32-WROOM-32E

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

ESP32-WROOM-32UE

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

ESP32-WROOM-32D

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

ESP32-WROOM-32U

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

ESP32-WROOM-32

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

ESP32-WROOM-32SE

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

ESP32-WROVER-E

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-WROVER-IE

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-WROVER-B

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-WROVER-IB

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-WROVER

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-WROVER-I

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-SOLO-1

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

ESP32-D2WD

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

ESP32-MINI-1

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-PICO-D4

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

ESP32-C3 Series

This section describes the differences among the ESP32-C3 Series of AT firmware, including

  • ESP32-C3-MINI-1_AT_Bin (referred to as MINI-1 Bin in this section);

  • ESP32-C3-QCLOUD_AT_BIN (referred to as QCLOUD 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

QCLOUD Bin

base

icon-green-check

icon-green-check

user

icon-green-check

icon-green-check

wifi

icon-green-check

icon-green-check

net

icon-green-check

icon-green-check

MDNS

icon-green-check

icon-green-check

WPS

icon-green-check

icon-green-check

smartconfig

icon-green-check

icon-green-check

ping

icon-green-check

icon-green-check

MQTT

icon-green-check

icon-green-check

http

icon-green-check

icon-green-check

FS

icon-orange-check

icon-orange-check

driver

icon-orange-check

icon-orange-check

WPA2

icon-orange-check

icon-orange-check

WEB

icon-orange-check

icon-orange-check

OTA

icon-green-check

icon-green-check

qcloud IoT

icon-orange-check

icon-green-check

Hardware Differences

Hardware

MINI-1

QCLOUD

Flash

4 MB

4 MB

PSRAM

icon-red-cross

icon-red-cross

UART Pins 2

TX: 7
RX: 6
CTS: 5
RTS: 4
TX: 7
RX: 6
CTS: 5
RTS: 4
2

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

Firmware Supported Modules

The table lists the ESP modules or chips that each AT firmware supports.

Module/Chip

MINI-1 Bin

QCLOUD Bin

ESP32-C3-MINI-1

icon-green-check

icon-green-check