ESP-AT Firmware Differences

[中文]

This document compares the differences among AT firmwares of a certain ESP32 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);

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

base

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

wifi

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

MDNS

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

smartconfig

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

MQTT

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

ble

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

blufi

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

icon-green-check

bt spp

icon-orange-check

icon-green-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

ethernet

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

driver

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

WEB

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

Hardware Differences

Hardware

WROOM Bin

WROVER Bin

PICO-D4 Bin

SOLO-1 Bin

MINI-1 Bin

D2WD Bin

Flash

4 MB

4 MB

4 MB

4 MB

4 MB

2 MB

PSRAM

icon-red-cross

8 MB

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
1

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

Supported Modules

The table lists the ESP32 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

ESP32-WROOM-32E

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

ESP32-WROOM-32UE

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

ESP32-WROOM-32D

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

ESP32-WROOM-32U

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

ESP32-WROOM-32

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

ESP32-WROOM-32SE

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

ESP32-WROVER-IE

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

ESP32-WROVER-B

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

ESP32-WROVER-IB

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

ESP32-WROVER

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

ESP32-WROVER-I

icon-red-cross

icon-green-check

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

ESP32-SOLO-1

icon-green-check

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-red-cross

ESP32-D2WD

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-red-cross

icon-green-check

ESP32-MINI-1

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-green-check

icon-green-check

ESP32-PICO-D4

icon-red-cross

icon-red-cross

icon-green-check

icon-red-cross

icon-green-check

icon-green-check