Esp32 at commands bluetooth. [ESP32 Only] AT+BTINIT: Classic Bluetooth initialization. With ESP-AT commands, you can quickly join the wireless network, connect to the cloud platform, realize data transmission and remote control functions, and realize the interconnection of everything through wireless communication easily. Basic AT Commands [中文] Introduction AT: Test AT startup. - Before using other Bluetooth LE AT commands, you should run this command first to trigger the initialization process. Some GATTS commands can also be used, such as those to start and stop services, set attribute values, and send notifications/indications. ESP-AT is a project based on ESP-IDF or ESP8266_RTOS_SDK. AT+BTSCANMODE: Set Classic Bluetooth scan mode. Mar 8, 2025 · The ubiquitous ESP32 microchip made by Chinese manufacturer Espressif and used by over 1 billion units as of 2023 contains undocumented commands that could be leveraged for attacks. AT+BTSPPINIT: Classic Bluetooth SPP profile initialization. [ESP32 Only] AT+BTSCANMODE: Set Classic Bluetooth scan mode. Introduction Bluetooth LE client reads and write services Encrypt Bluetooth LE connection Establish SPP connection between two ESP32 development boards and transmit data in UART-Bluetooth LE Passthrough Mode Establish Oct 12, 2021 · In this tutorial we'll using AT commands on the ESP32 to establish a serial connection to a smartphone using Bluetooth's Serial Port Profile (SPP). ESP32 Classic Bluetooth AT Examples [中文] This document provides detailed command examples to illustrate how to utilize ESP32 Classic Bluetooth® AT Commands on ESP32. 0. Not all AT commands support all of the four types mentioned above. Bluetooth LE AT Examples [中文] This document provides an introduction and detailed command examples to illustrate how to utilize Bluetooth® Low Energy AT Commands on ESP32. AT+UART_DEF: Default UART AT Command Set [中文] Here is a list of AT commands. The default value of the parameter will be used instead when you omit it. ATE: Configure AT commands echoing. Angle brackets < > designate parameters that can not be omitted. bin" file and loaded the firmware using the "ESP32 Download Tool V3. Component config -> AT -> [*] AT bt command support. Note If you want to achieve the firmware download, you could send this set command to let ESP32-C3 enter the download mode, so that you can save Boot pins on the hardware. AT+BTNAME: Query/Set Classic Bluetooth device name. 5". AT+CMD: List all AT commands and types supported in current firmware. 2. If you need ESP32 to support Classic Bluetooth commands, you can compile the ESP-AT project by following the steps in Compile ESP-AT Project Locally documentation. AT+RESTORE: Restore factory default settings of the module. AT+SAVETRANSLINK: Set whether to enter Passthrough Mode on power-up. [ESP32 Only] AT+BTNAME: Query/Set Classic Bluetooth device name. Now the serial works, the AT commands for classic Bluetooth work. If you need ESP32 to support Classic Bluetooth commands, you can compile the ESP-AT project by following the steps in Compile ESP-AT Project Locally documentation. Introduction Bluetooth LE client reads and write services Encrypt Bluetooth LE connection Establish SPP connection between two ESP32 development boards and transmit data in UART-Bluetooth LE Passthrough Mode Establish Parameter <mode>: 0: Restart ESP32-C3 and the chip enters normal running mode. AT+GSLP: Enter Deep-sleep mode. - After the initialization, the Bluetooth LE role cannot be changed unless you run :ref:`AT+RST <cmd-RST>` to restart the system first and then re-initialize the Bluetooth LE role. Some of them can only work on the ESP32 series, so they are marked as [ESP32 Only] at the beginning; those without any mark can work on all ESP series, including ESP32, ESP8266, ESP32-S2, and ESP32-C3. Establish SPP connection between phone (or PC) and ESP32 in Normal Transmission mode with IO capability set to NoInputNoOutput Bluetooth LE AT Examples [中文] This document provides an introduction and detailed command examples to illustrate how to utilize Bluetooth® Low Energy AT Commands on ESP32. In the project configuration during the fifth step, make the following selections (Each item below is independent. AT+GMR: Check Version Information Execute Command Command: Mar 10, 2025 · Hidden Bluetooth commands and potential exploits Researchers at security firm Tarlogic discovered 29 undocumented Host Controller Interface commands within the ESP32’s Bluetooth firmware. AT Messages There are two types of ESP-AT messages returned from the ESP-AT command port: ESP-AT Response Messages (passive) Each ESP-AT command input returns response messages to tell the sender the result of the ESP-AT command. Choose it according Bluetooth LE AT Examples [中文] This document provides an introduction and detailed command examples to illustrate how to utilize Bluetooth® Low Energy AT Commands on ESP32-C3. The host MCU sends AT commands to the ESP32 chip and receives AT responses back. If the Bluetooth LE client is initialized, you can use this command to create local services. Before using other Bluetooth LE AT commands, you should run this command first to trigger the initialization process. Important The default AT firmware supports all the AT commands mentioned on this page. com » Tue Sep 07, 2021 5:22 pm Hi: Trying to turn on Bluetooth classic in esp32 using AT commands. Introduction Bluetooth LE client reads and write services Encrypt Bluetooth LE connection Establish SPP connection between two ESP32-C3 development boards and transmit data in UART-Bluetooth LE Passthrough Mode Sep 7, 2021 · Starting and using Bluetooth SPP with AT commands Postby wesmcd6@gmail. AT+UART_CUR: Current UART configuration, not saved in flash. AT Before using other Bluetooth LE AT commands, you should run this command first to trigger the initialization process. If you want to use classic bluetooth commands, you need to enable BT commands in menuconfig. [ESP32 Only] AT+BTSTARTDISC: Start Classic Bluetooth discovery. AT+BTSPPCONN: Query . These commands allow you to utilize Bluetooth LE functionality on compatible ESP devices, enabling device discovery, connection, data exchange, and security features. After the initialization, the Bluetooth LE role cannot be changed unless you run AT+RST to restart the system first and then re-initialize the Bluetooth LE role. AT+BTINIT: Classic Bluetooth initialization. Want to set the thing up to connect and establish SPP connection. [ESP32 Only] AT+BTSPPSEND : Sends data to remote bt spp device [ESP32 Only] AT+BTA2DPINIT : Classic Bluetooth A2DP profile initialization [ESP32 Only] AT+BTA2DPCONN : Establishes A2DP connection [ESP32 Only] AT+BTA2DPDISCONN : Ends A2DP connection [ESP32 Only] AT+BTA2DPSRC : Set or query the audio file URL Basic AT Commands [中文] AT: Test AT startup. Square brackets [ ] designate optional parameters that can be omitted. AT+GMR: Check version information. By default, Classic Bluetooth AT commands are disabled in the ESP32 series AT firmware. AT+RST: Restart a module. [ESP32 Only] AT AT Messages There are two types of ESP-AT messages returned from the ESP-AT command port: ESP-AT Response Messages (passive) Each ESP-AT command input returns response messages to tell the sender the result of the ESP-AT command. 6. Learn to configure the HC-05 Module by connecting it to PC, entering AT mode and sending commands, and a complete list of HC-05 AT commands. After ESP32 enters the passthrough mode using AT commands, can ESP32 give a message if the connected hotspot is disconnected? How to enable the notify and indicate functions on Bluetooth LE clients? Espressif Wi-Fi and Bluetooth chipsets are often used as add-on modules to seamlessly integrate wireless connectivity features into new and existing products. 1: Restart ESP32-C3 and the chip enters firmware downloading mode. The last message in the response is either OK or ERROR. If you want to use them on ESP32 devices, please follow the steps below. ESP32 Classic Bluetooth® AT Commands [中文] ESP32 AT firmware supports Bluetooth® Core Specification Version 4. Below are examples of How to use ESP-AT Classic Bluetooth ¶ Overview ¶ Classic bluetooth is Disabled by default. Currently, only strings and integer numbers are supported as input parameters in AT commands. May 22, 2019 · To fix it, after recompiling, I added the "factory_param_WROVER-32. May 18, 2025 · This page documents the Bluetooth Low Energy (BLE) AT commands supported by the ESP-AT firmware. To facilitate this and cut down on engineering costs, Espressif Systems has developed a set of AT commands that can be used on Espressif products. If you need to modify the commands supported by ESP32-C3 by default, please compile the ESP-AT project by following the steps in Compile ESP-AT Project Locally documentation. AT+BTSTARTDISC: Start Classic Bluetooth discovery. ESP-AT provides a wide range of AT commands with different functions, such as Wi-Fi commands, TCP/IP commands, Bluetooth LE commands, Bluetooth commands, MQTT commands, HTTP commands, Ethernet commands, etc. [ESP32 Only] Classic Bluetooth® AT Commands ¶ [中文] ESP32 AT firmware supports Bluetooth® Core Specification Version 5. yfsvims qqqqx sg4i5e bouue3 1vqb nflw cinxg amtn2 m49i upt