Esp32 ble server profile. Nov 16, 2023 · Bluetooth Low Energy Introduction – Basic Concepts. You signed out in another tab or window. #esp32 #espidf #ble 這是 ESP-IDF 範例，ESP32 板子做為 BLE SPP (Serial Port Profile) server 端，也就是當作周邊之用，不過應該是 BLE GATT 協定的通訊傳輸。此外 Espressif ESP32 Official Forum. This keypad stores passwords and if the password matches, the ESP32 sends a signal. 아두이노 ESP32 BLE_server 동작 설명 및 소스코드 분석. 1. ESP-BLE-MESH Examples . We’ve covered the basics of ESP32 and BLE(Bluetooth Low Energy), setting up Menuconfig, and implementing BLE communication in code. Bluetooth® Low Energy (Bluetooth LE) Bluetooth Low Energy. Embedded Rust Bluetooth on ESP: BLE Scanne The Bluedroid based stack (default) supports classic Bluetooth as well as Bluetooth Low Energy (Bluetooth LE). In conclusion, we have learned how to perform communication between ESP32 BLE server and ESP32 BLE client using Arduino IDE. Cargamos el programa Servidor de ejemplo que nos suministran las librerías del ESP32 BLE, y vimos cómo, con la ayuda de una app para nuestro móvil, podíamos comprobar que publicaba correctamente nuestros datos, los pocos que habíamos manipulado, pero sin entrar en el detalle de funcionamiento del programa servidor. This document presents a walkthrough of the GATT Server Service Table example code for the ESP32. Reload to refresh your session. The Bluetooth Serial Port Profile (SPP) server is a Bluetooth profile that emulates the behavior of a traditional serial port (RS-232) over a wireless Bluetooth connection. Bluetooth Low Energy GAP. 아두이노 ESP32 - BLE_server에 Advertising 데이터 추가하기. com jadi yang diperlukan adalah dari aplikasi android mengirim data berupa perintah ON/OFF untuk ESP32, dan ESP32 membaca data yang dikirim oleh aplikasi melalui BLE. e. i am able to connect to one server and get the temp characteristic. BLE has been around for quite a while now and it is integrated with most smartphones on the market today. This demo starts a BLE server on your ESP32 and uses an iOS App to send messages to it. The ESP32 microcontroller is equipped with a built-in BLE module, making it an ideal choice for developing BLE-enabled IoT devices. Mar 20, 2014 · GATT is an acronym for the Generic ATTribute Profile, and it defines the way that two Bluetooth Low Energy devices transfer data back and forth using concepts called Services and Characteristics. Try to solve one problem at time, make your server code and use an app "BLE Scanner" on your smartphone to make sure you can connect and see the data you are trying to send, after your server code is working with the BLE Scanner app you can try your client code. . 3. Jul 19, 2023 · I developed a code to establish a connection between an ESP32 device and Windows, Mac, and Linux systems using Bluetooth Low Energy (BLE) technology. 3BLEにはバグがあるので修正が必要です※ 「void BLERemoteService::getCharacteristics(std::map* pCharacteristicMap)に構文ミスがある」 「BLEデバイスから取得したUUIDの先頭の0000が無くなる」 If using ESP32 as a BLE server, a service bin should be downloaded into Flash. The ESP32 will also be setup as a WiFi AP to control lights and other connected devices based on the data from the sensor nodes. In this article, I am going to show you how to make a simple BLE presence detector with the help of an ESP32, and Arduino, and in the end, we will test The ESP32 BLE Client will scan nearby devices until it finds a specific device (a BLE Server), the ESP32 BLE Client will then connect to the BLE Server, and finally the ESP32 BLE Client will retrieve some data from the BLE Server. Jan 12, 2017 · ESP32 (master + GATTC) connect to 2 ESP32 (slave + GATTS); ESP32 (slave + GATTS) connected by 2 ESP32 (master + GATTC) and BTW I also tried 2 ESP32 connected and each both act as GATTS + GATTC. We also recommend that you take a quick look at our BLE getting started guides and tutorials: Getting Started with ESP32 Bluetooth Low Energy (BLE) on Arduino IDE; ESP32 BLE Server and Client (Bluetooth Low Energy) Jan 8, 2019 · There is an example in the ESP32 AT doc Section 9. 本文使用ESP32 IDF官方的 ble_spp_server_demo 示例。 在低功耗蓝牙上实现SPP Server，整体可分为两步： 1. 2 UART-BLE Passthrough Mode If you use ESP32 as BLE server, a mobile phone as BLE client, you may need a BLE phone app as the client, for example, I am using LightBlue on iphone. The design of the cration of the BLE server is: Create a BLE Server; Create a BLE Service Code: Select all /* This example code is in the Public Domain (or CC0 licensed, at your option. For BLE systems, an adopted SPP profile over BLE is not defined, thus emulation of a serial port must be implemented as a vendor-specific custom profile. OnOff Server - shows the use of ESP-BLE-MESH as a node having a Configuration Server model and a Generic OnOff Server model. Apr 7, 2022 · I am using two ESP32 Dev Kit C4 for this tutorial, but you may use any other BLE-enabled board/controller supporting Zephyr. ESP_OK: success. First of all, thanks for reading this question. It supports both the central and peripheral roles, allowing it to connect to other BLE devices or act Instantiate SPP profile. Jan 29, 2023 · This tutorial explains how to use Bluetooth Low Energy (BLE) with the ESP32. The receiver board displays the data on an OLED display. Making a BLE Server with your ESP32 device can create a whole new realm of possibilities for your ESP32 projects. Learn to use BLE on ESP32 along with BLE theory, Code for creating a GATT Server and setting a characteristic value, and using nRF-Connect app to read it. This component allows other components to create their own services to expose data and control. Dec 15, 2023 · In the rapidly evolving landscape of Internet of Things (IoT) and embedded systems, the ESP32 microcontroller has emerged as a cornerstone technology. BLE V4. Jul 17, 2018 · I am new to BLE and trying to make client - server ESP32 system that has custom BLE services and use security. Your smartphone or computer acts as the BLE Controller, managing the connection and communication with the ESP32. I'm developing an application which involves a keypad. We’ll start by looking at what BLE is and what it can be used for, and then we’ll look at some examples utilising the ESP32 and the Arduino IDE. The BLE code is now part of the ESP32 Arduino core, making it automatically available to any Arduino ESP32 project without the need for manual import. Sep 1, 2021 · Arduino-ESP32 1. Low Power consumption. Nov 19, 2019 · It's all standard BLE stuff. The Arduino TX RX model works as a serial… May 27, 2020 · You may open the sample code by selecting File > Examples > ESP32 BLE Arduino > BLE_server. After connection is success, server turns on led. In this document, we review the GATT SERVER example code which implements a Bluetooth Low Energy (BLE) Generic Attribute Profile (GATT) Server on the ESP32. Renowned for its versatility and advanced features, it finds extensive use in a myriad of applications. 0. The ESP32 platform provides an inexpensive and small form factor platform for hosting Bluetooth Low Energy (BLE) applications. 1, users can refer here for the certification details of ESP-BLE-MESH. We will also see how can we connect a smart phone with ESP32 BLE Server. このプロジェクトでは、ESP32マイクロコントローラーを使用して、シンプルなBluetooth Low Energy（BLE）シリアル通信アプリケーションを開発するためのガイドを提供します。 Apr 15, 2024 · This post is the sixth of a multi-part series where I'm exploring the use of Bluetooth Low Energy along embedded Rust on the ESP32. Create a BLE server that, once we receive a connection, will send periodic notifications. It makes use of a generic data protocol called the Attribute Protocol (ATT) , which is used to store Services, Characteristics and related data in a May 16, 2024 · The web server allows you to visualize the data saved on the file, download the data file to your computer, or delete the file from the microSD card. This example implements a Bluetooth Low Energy (BLE) Generic Attribute (GATT) Server using a table-like data structure to define the server services and characteristics such as the one shown in the figure below Therefore, it demonstrates a practical way to define the server functionality in one ESP-BLE-MESH Examples . Before proceeding, it’s important to get familiar with some basic BLE concepts. ESP32 BLE + Android + Arduino IDE = AWESOME: Introduction As you might know, the ESP32 is an incredibly feature-packed module that has not only WiFi but also Bluetooth Low Energy (BLE), touch sensors, tons of ADC pins, DAC pins, audio support, SD card support did I mention enough to impres… Sep 8, 2023 · You’ve now embarked on a journey to master BLE data exchange with ESP32 and ESP-IDF. A ESP-BLE-MESH Provisioner can then provision the unprovisioned device and control a RGB LED representing on/off state, see example code . Sep 29, 2022 · You want the client to connect to the server with given advertised name. Apr 6, 2023 · 在连接建立后，SPP server和SPP client之间可以进行数据传输和控制。 本文介绍实现SPP Server的过程 。 二、 SPP Server开发步骤. The Bluetooth Low Energy (BLE) Battery Service is a simple GATT service that allows a device to expose the current battery level to other devices. This is an ideal protocol for battery-powered IoT or wearable devices. ESP32 is called a GATT Server (Generic Attribute Profile Server). 1 Profile（规范） Sep 8, 2019 · Espressif ESP32 Official Forum. ) Unless required by applicable law or agreed to in writing, this software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Unlike Classic Bluetooth in ESP32 the BLE operates only when a communication is activated and stays in sleep mode otherwise, this makes it the right choice for battery powered applications. Remember, this document serves as a simple guide on how to connect the two devices together via BLE. Nov 11, 2021 · Make a BLE (Bluetooth Low Energy) connection between two ESP32 boards. Este es solo un proyecto introductorio con respecto a ESP32 Bluetooth Low Energy. BLE Server. Information in this post might rely on knowledge presented in past posts. In BLE communication between a client and a server, data is grouped into service and characteristic (an attribute table). Apr 26, 2016 · ESP32 acts as BLE Central and connects to all of the sensor nodes. cfg-- [in] SPP configuration. Mar 2, 2019 · Grab another ESP32 (while the other is running the BLE server sketch). Check bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials:. This service exposes measurement data from environmental sensors and supports a wide range of environmental parameters like temperature, humidity, pressure, and others. Oct 23, 2018 · Stay curious, you will get answers for these questions as we try to understand Bluetooth Low Energy (BLE for short), with the popular ESP32 module. Introduction Bluetooth is a wireless communication technology that enables data exchange over short distances between devices, allowing for convenient connectivity in various applications such as audio streaming, file transfer, and device synchronization. For a simple introduction we’ll create an ESP32 BLE server, and an ESP32 BLE scanner to find that server. Application Example; API Reference Feb 26, 2024 · Introduction. The operation will close all active SPP connection first, then the callback function will be called with ESP_SPP_CLOSE_EVT, and the number of ESP_SPP_CLOSE_EVT is equal to the number of connection. 2. Nov 18, 2021 · Hello readers, I hope you all are having fun in your lives. i need a code for one esp32 client connecting to multiple ESP32 server . Aug 1, 2021 · I need to put a password for BLE connection of ESP32. Please refer to the ESP32_Customize_Partitions for more details. Dec 4, 2022 · そこで通信仕様の資料を元にESP32でダミーのBLEデバイスを作ってみたところ、よい感じに動いてくれたので事なきを得たのでした 。 ESP32は安価で入手性もよく、Arduinoで手軽にプログラムを開発できるという利点があります。 3 days ago · Understanding ESP32 BLE Before we dive into the technical aspects, let’s have a brief overview of ESP32 BLE. BLE Server¶. Before we dive into the OTA process we will first review the basics of Bluetooth Low Energy (BLE). In this tutorial, we’ll cover Wi-Fi provisioning via Bluetooth. I covered LEDs, buttons, and devicetree overlays. Jun 4, 2023 · self. 4で修正されました ※Arduino-ESP32 1. Feb 1, 2021 · As you can see from the code above, I have simply tried to register another GAP callback using esp_ble_gap_register_callback. This reference design consists of two Demos, the BLE SPP server and BLE SPP client that run on their respective endpoints. bin has to be downloaded, so that the relevant commands can be used. We have also built a Bluetooth iBeacon using ESP32 previously. Now that we have seen how to work with Classic Bluetooth, we will focus our attention on Bluetooth Low Energy or BLE. BLE Server and Client. Apr 11, 2024 · The ESP32 supports Wi-Fi provisioning over SoftAP (access point) or via Bluetooth Low Energy. Mar 10, 2024 · This post is a start of a new series where I'll be exploring the use of Bluetooth Low Energy along embedded Rust on the ESP32. Hence, in this case, ESP32 is acting as a server and the smart phone is acting as a client device. The esp32_ble_server component in ESPHome sets up a simple BLE GATT server that exposes the device name, manufacturer and board. ) that are nearby your ESP32. These devices connect and exchange data wirelessly with each other. Bluetooth the Controller are implemented on the same device (i. ESP-BLE-MESH is implemented and certified based on the latest Mesh Profile v1. The ESP32 also acts as a BLE Peripheral so a user can connect to a single BLE device (ESP32) and see all of the data from the 3 different sensor nodes. When used as a BLE server, you can simply enable advertising again after a client connects. One ESP32 is going to be the server, and the other ESP32 will be the client. The ESP will print the received messages to the serial console. This document will cover the steps to set up the ESP32 to act as a BLE server and communicate with a BLE client over a serial connection. To provision the ESP32 via BLE, we need to use another BLE-enabled device, usually a smartphone to connect to the ESP32 via BLE and send the Wi-Fi credentials. This is highly recommended for the Internet of Things. Devices recognize each other using GAP and connect. The BLE server advertises characteristics that contain sensor readings that the client can read. The Bluedroid based stack (default) supports classic Bluetooth as well as Bluetooth Low Energy (Bluetooth LE). You signed in with another tab or window. In a nutshell: BLE is a wireless technology that allows devices to exchange small amounts of data with low power Parameters. config to download those binaries, it shows the details. In today's lesson, we'll go over another built-in feature of the esp32 module that helps it stand out from the competition: BLE or Bluetooth Low Energy. Aug 4, 2020 · In this post, we explored the use of BLE and the GATT specification to transmit environmental sensor data from a peripheral device to a central device. This functionality is especially useful when using your ESP32 to exchange data with sensors (temperature, humidity, etc. ESP32 can be used as a BLE server supporting multiple BLE clients to access simultaneously. Introducing Bluetooth Low 7. This function is called to uninit SPP module. 01 to 10 mW) in contrast to classic Bluetooth (with class 1 devices reaching up to 100 mW and class 3 devices at 1 mW). Apr 1, 2024 · ESP32 BLE is aimed at battery operated, low-power wireless communication between different BLE Devices. We will learn all the essentials in order to use BLE in ESP32 and configure it as both a Server and a Client. The example shows how to build BLE SPP (Serial Port Profile, UART-BLE passthrough mode) with AT commands. Faster connection. We’ll make an ESP32 BLE server and an ESP32 BLE scanner to find it as a simple introduction. It supports Bluetooth Low Energy (BLE) and Classic Bluetooth protocols. Bluetooth Low Energy (BLE) Profiles. You do have notification service running on server, but your client isn't interested. Returns. 5. Remember that this is just the beginning; BLE(Bluetooth Low Energy) opens up a world of possibilities for your IoT projects. This type of communication is often referred to as point to point communication. [ESP32 Only] AT+BLEHIDINIT: BLE HID device profile initialization [ESP32 Only] AT+BLEHIDKB: Send BLE HID Keyboard information If using ESP32 as a BLE server, a Parameters. If you're interested in sending data between the devices or enabling more advanced communication features, we have a separate project that covers these aspects. ESP32 BLE Server and Client (Bluetooth Low Energy) In this project, we show how to send sensor data from one ESP32 board to another via BLE. For users to make a choice: For usecases involving classic Bluetooth as well as Bluetooth Low Energy, Bluedroid should be used. ESP32 Bluetooth Low Energy: To fulfill the requests of several followers who have experience with small models of Arduino Bluetooth, today we’ll discuss ESP32 Bluetooth Low Energy. 启动 SPP Server服务。 For BLE systems, an adopted SPP profile over BLE is not defined, thus emulation of a serial port must be implemented as a vendor-specific custom profile. Jun 11, 2024 · For a brief introduction to the ESP32 with BLE on the Arduino IDE, we’ll create an ESP32 BLE server, and then an ESP32 BLE scanner to find that server. Among its many capabilities, one that stands out is Bluetooth Low Energy (BLE) connectivity. Aprenderá algunas características básicas de Bluetooth Low Energy, cómo usar la función ESP32 BLE, cómo configurar ESP32 como servidor y cliente BLE y también cómo conectar un teléfono inteligente al servidor ESP32 BLE. 0 ESP32 is a widely used micro controller developed by Espressif Systems, which features built-in Wi-Fi and Bluetooth capabilities. other: failed . Oct 31, 2023 · The program sets up an SPP server, which can receive and send data over a Bluetooth connection. This was achieved by using two ESP32 boards one that acted as a server and the other that acted as the client using Bluetooth. Mar 7, 2024 · I am using esp32 dev kit with wi-fi and bluetooth features in this project with MAX30102 pulseoximetry sensor and electrical stimulation electrode. I'm stuck with profile handler on ESP32 side. The ESP32 WROOM 32E is a module that integrates Wi-Fi and Bluetooth connectivity into a single chip. BLE Services and Characteristics. This article describes combining a low cost temperature and humidity sensor with the ESP32 platform to implement a BLE server device that can provide temperature, humidity, and date/time readings. It uses the ESP-IDF framework to configure and manage Bluetooth communication. Application Examples . each server is connected to a sensor (DHT11). 2. 启动 GATT Server； 2. Aug 10, 2018 · Na nossa montagem temos o sensor de temperatura, o buzzer e o ESP32. This is a GATT server demo and its tutorial. The HTML file to build the ESP32 web server will also be hosted on the microSD card. You switched accounts on another tab or window. Given its low energy consumption and well-developed profiles, such as GATT, Bluetooth Low Energy (BLE) is an ideal short-range wireless protocol for IoT devices. So I am looking in way of combining examples from IDF folder: gatt_security_server, gatt_security_client, gatt_server, gatt_client, because security_server/client applications are made with heart thermometer service. We’ll use and explain the examples that come with the BLE library. BLE represents a paradigm shift in wireless GATT Server API . On the other hand, Apache NimBLE based stack is Bluetooth Low Energy only. Aug 18, 2007 · 목차 - BLE Server. And you can refer to the AT_BIN/download. Welcome to the 2nd Chapter of Section-2 in the ESP32 Programming Series. 1. About the Bluetooth Function. Then they start transmitting and receiving data with GATT. Aug 31, 2020 · If you are completely new to BLE, then check out the ESP32 BLE client and ESP32 BLE Server projects that we have built earlier. I am using bluetooth to connect esp32 to phone and read the output via esp32 bluetooth terminal which I downloaded from Google Play. It is designed for creating large-scale, self-healing, and highly reliable mesh networks that consist of numerous interconnected BLE devices. As with Bluetooth Classic, we use Profiles to establish our connection and exchange data with BLE. Once the code is uploaded and you should have the two ESP32 boards powered on: One ESP32 with the “BLE_server” sketch; Other with ESP32 “BLE_scan” sketch. Below is the client code which only connects to server with name "BOX_A1". We send sensor readings from one ESP32 board to another via BLE server and client. With Bluetooth Low Energy, there are two types of devices: the server and the client. Namely, I need to create a password as an array, and every time I need to connect my phone I will enter it. In Bluetooth Low Energy (BLE), communication involves two types of devices: the server (Peripheral) and the client (Central). Apr 14, 2020 · This post is a quick introduction to BLE with the ESP32. , the ESP32 chip), eliminating the need for an extra PC or other host devices running the Bluetooth Host. Mar 1, 2021 · What is the behavior of the program after calling the esp_ble_gatts_create_service function? Will the execution be interrupted at this line of code and processing of the ESP_GATTS_CREATE_EVT event will start? Nov 27, 2022 · Skenario ESP32 BLE Kontrol LED Bawaan. If you haven’t already, please read my post about GPIOs first. Jul 15, 2019 · Espressif ESP32 Official Forum. In Part 1 first some BLE basics are discussed and then focuses on the BLE Server You signed in with another tab or window. First, we’ll explore what’s BLE and what it can be used for, and then we’ll take a look at some examples with the ESP32 using Arduino IDE. Apr 15, 2021 · I'm trying to develop a bluetooth network with one client and several servers, but they communicate with the client based on "notify". Ligamos o ESP32 e chamamos o BLE scanner, que vai localizar nosso microcontrolador. The service advertises itself as: 4fafc201-1fb5-459e-8fcc-c5c9c331914b And has a characteristic of: beb5483e-36e1-4688-b7f5-ea07361b26a8. Introducing Bluetooth Low Energy Jul 15, 2018 · I am new to BLE and trying to make client - server ESP32 system that has custom BLE services and use security. Here is the code on esp32: May 26, 2024 · ESP32 & BLE. esp_err_t esp_spp_deinit (void) . Key features. Remember to May 27, 2020 · Arduino 以及ESP32 都附有不少的範例，這次我們用到的是 ESP32 範例中的 “BLE_server”。 範例可以在 File > Examples > ESP32 BLE Arduino > BLE_server 中找到並打開。 The ESP32 board will therefore act as a BLE server which is operated through a battery whose battery percentage is being sent. After the code is opened, let deploy it directly by clicking the right arrow at the top bar. Below is an example of using two ESP32 modules, one as a BLE server (hereafter named “ESP32 Server”), the other one as a BLE client (hereafter named “ESP32 Client”). In this example, we’ll get the time from the internet (NTP server), so the ESP32 needs to be connected to a Apr 5, 2017 · I'm have ESP32 as gatt client and other ble module (nrf52) which runing as gatt server. No vídeo mostro como fazer a conexão entre os dois, bem como a execução de alguns comandos envolvendo o Led e o buzzer. Mar 12, 2024 · BLE conserves energy by employing lower transmission power (ranging from 0. For more information, see ESP32 Arduino BLE Library . Ceritanya kita akan mengontrol LED bawaan biasanya terhubung ke pin IO2, IO4 atau ntahlah pin berapa aja liat masing-masing tipe board nya kemudian baca pinout nya di google. ESP32 支持的双模蓝牙并没有特殊的地方，不需要做复杂的配置或调用即可使用。从开发者的⻆度来看，Bluetooth® LE 调用 Bluetooth LE 的 API，经典蓝牙调用经典蓝牙的 API。 Jun 1, 2021 · Bluetooth Low Energy Basics. Provisioning over BLE. GATT stands for Generic Attribute Profile, responsible for defining a method to send and receive data between the two connected devices with BLE. 1 Bluetooth¶. Compact size. And I don't say that whimsically because I know everything about BLE, I can say it because the library I recommended handles it fine, despite the fact that I know nothing about BLE. bleはBLEインスタンスを指しています。このインスタンスはESP32のBLE機能を制御します。 gatts_notifyは、GATT(Generic Attribute Profile)サーバーとして動作するBLEデバイスから、接続されたクライアントデバイスにデータを通知するためのメソッドです。 Oct 13, 2023 · BLE Mesh, or Bluetooth Low Energy Mesh, is a wireless communication protocol and network topology that is built on top of Bluetooth Low Energy (BLE) technology. 아두이노 ESP32 - BLE_server에 Advertising Data 실시간 업데이트하기 Oct 31, 2023 · Last week, in order to switch to Bluetooth Low Energy (and because I wanted a smaller board), I switched to an Arduino Nano ESP32. In this example you have array of services with 1 characteristic for every service, instead you can have array of characteristic for every service and duplicate this code for every characteristic added to service: Aug 3, 2023 · Connection between client and server. All the GATT behaviors succeed, except some connection have a chance to get disconnected, especially transmitting data on all connections. Jun 13, 2024 · In the above diagram, the ESP32 takes the role of the BLE Peripheral, serving as the device that provides data or services. Secure & Reliable. Sorry it's a massive pain in the backside, but that's the honest answer of what you'll need to do to send stuff with ESP32 using BLE. I'm using the BLE examples May 11, 2024 · This is a quick introduction to Bluetooth Low Energy (BLE) with the ESP32. Jul 7, 2021 · 为实现配置文件(Profile)的设备定义了两种角色：Client(客户端)、Server(服务器)。esp32的ble一般就处于Server模式。 一旦两个设备建立了连接，GATT就开始发挥效用，同时意味着GAP协议管理的广播过程结束了。 1. In your Arduino IDE, go to File > Examples > ESP32 BLE Arduino and select the BLE_scan example. While the ESP32 successfully connects to Linux and Mac systems via BLE, it encounters difficulties when attempting to establish a connection with Windows. Hello, We would like to setup a BLE server and client, both working together at the same time. Oct 26, 2023 · In this guide, you’ll learn how to set up the ESP32 as a BLE Peripheral (or BLE Server) with an Environmental Sensing Service. But I did not figure out how to enable serial communication over BLE. Meanwhile, it can also be used as a BLE client connecting to multiple BLE servers simultaneously. GATT Server API . So instead of having 1 gap callback, I now have 2 gap callbacks ( one for iBeacon and the other for the main BLE APP). Cost-Effective. ‣ at_customize. Please see the Architecture for information about the implementation of ESP-BLE-MESH architecture and ESP-BLE-MESH API Reference for information about respective API. ccnsvacveoyelthshhoitthazketmtbxiteixoytqsizrahioumv