Ble server esp32

Ble server esp32. Once you have the ESP32 device flashed with the BLE-Scanner, and maybe distributed a few of these devices in your infrastructure, you can use the Firemware Upgrade procedure where a new build SW version can by flashed over the air (OTA). ; BLE Server Creation: Establishes a BLE server to handle incoming client connections. p110i_esp32_ble_mtu. I'm wondering what the suggested steps would be. We will create a battery level indicator using the GATT service. This will be used to instantiate and manage a BLE(Bluetooth Low Energy) server on the ESP32, allowing other BLE clients (like a smartphone app) to connect and communicate with it. HTTP POST Web APIs. BLE functions for ESP32 This library provides an implementation Bluetooth Low Energy support for the ESP32 using the Arduino platform. I'll use the codes of Neil Kolban. WebApp allows the user to pair with our ESP32 BLE Server using Web Bluetooth. We’ll use and explain the examples that come with the BLE library. Start the service. Notify. Click on File > Examples > ESP32 BLE Arduino. (e. 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. OnOff Client - shows how a Generic OnOff Client model works within a node. After the code is opened, let deploy it directly by clicking the right arrow at the top bar. ESP32 BLE ESP32 BLE Server Send Battery Level Indication with GATT Service. 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. Only a BLE scanner was tested, although the ESP32 documentation suggests you can also make BLE connections. My phone can scan and recognize the ESP32 but it could not connect. Bluetooth® Low Energy (Bluetooth LE) Bluetooth Low Energy. Oct 29, 2021 · I'm trying to make smart social distancing circuit for COVID 19. It can operate in both client and server roles, allowing it to connect to other BLE devices or act as a peripheral device itself. BLE characteristics are what your device is allowed to do when serving information. In Part 1 first some BLE basics are discussed and then focuses on the BLE Server Dec 15, 2023 · BLEServer* pServer; declares a pointer to a BLEServer object. In other words, we will learn to exchange data between two ESP32 boards over BLE. Making a BLE Server with your ESP32 device can create a whole new realm of possibilities for your ESP32 projects. Jun 27, 2019 · I'm developing a joint work Android app/ESP32 application to communicate via BLE. Now let's have a look at the setup() function. This demo shows how to run a BLE MIDI Service. Hence, in this case, ESP32 is acting as a server and the smart phone is acting as a client device. ESP32 BLE Client-Server. I am using Android version 13 and Arduino IDE version 2. I expected the program to display the battery level on the status bar of my phone just like my bluetooth headphones but it did not happen. You will find a list of examples. You signed in with another tab or window. Est. ESP32 BLE. Application Example; API Reference OnOff Server - shows the use of ESP-BLE-MESH as a node having a Configuration Server model and a Generic OnOff Server model. Learn how to use Bluetooth Low Energy (BLE) in ESP32, BLE Server, Client, Smartphone. ESP32 ESP-MESH. Memory-intensive components such as Voice Assistant and other audio components are most likely to cause issues. In this tutorial, we will learn how to perform BLE server client communication between two ESP32 boards using Bluetooth Low Energy. aia (203. There are several libraries provided to support both configurations. MacOS: in Audio/MIDI Config, MIDI Window, press Bluetooth Configuration button: the "MIDIbox" device should show up, and you should be able to connect. This type of communication is often referred to as point to point communication. I have pulled the latest Arduino-ESP32 distribution and added to the Arduino library version 0. The receiver board displays the data on an OLED display. Aug 10, 2018 · Definimos nesta etapa o nome do dispositivo Bluetooth como “ESP32-BLE” e criamos um BLE server. 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. BLE Server and Client. ino) I get the following errors; Nov 27, 2022 · Skenario ESP32 BLE Kontrol LED Bawaan. After getting to know about the necessary BLE terminologies, let us move ahead and program our ESP32 module as a BLE server. 10 is the version number of the board package and can can be different Apr 15, 2024 · let ble_advertiser = ble_device. The ESP32 platform provides an inexpensive and small form factor platform for hosting Bluetooth Low Energy (BLE) applications. We then create a service, as well as set the characteristics of sending data. Notice: The ESP32 Server needs to download a “service bin” into Flash to provide BLE services. 0 supported chips. You should be able to connect to the Bluetooth MIDI Interface with your computer. txt file located here : c:\Users\ednie\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2. get_advertising(); 4️⃣ Obtain Handle for Server: We create a server instance by calling get_server, this will create a BLEServer instance. 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. A development board with ESP32-C3 SoC, ESP32-S3, ESP32-C2/ESP32-H2 SoC and BLE5. ESP32 Email. txt. PWM Multiple Sliders Feb 19, 2024 · Once you’ve configured the module as you wish, you can pair the ESP32 with the system of your choice, just like any other Bluetooth device. May 15, 2020 · I am working on a project involving 2 ESP32 Wemos D1 Mini boards. This project is about a Ble secure server that supports multi-client through the static passkey. Check bluetooth/bluedroid/ble folder in ESP-IDF examples, which contains the following demos and their tutorials:. MTU. A complete beginner's guide on using ESP32 BLE Feature. ) A USB cable for Power supply and programming; See Development Boards for more information about it. 1; 2; 3 Dec 29, 2020 · Espressif ESP32 Official Forum. Application Examples . . I plan on using ESP32 for this. BLE Server¶. The ESP32 BLE stack is built on the ESP-IDF (Espressif IoT Development Framework) and supports BLE 4. In this example rxValue is the data received (only accessible inside that function). BLEDevice – This library provides functions to initialize and configure the BLE stack on the ESP32. Communication. The ESP will print the received messages to the serial console. BLE Initialization: Sets up the ESP32 as a BLE device named "ESP32_BLE". Aug 18, 2023 · Hello, I have been trying to follow this guide but without success. The BLE extension sends the messages in 20-byte packets, this is called MTU (Minimum Transmission Unit). Maintainer: Dariusz Krempa. Again, we will use a sample example code from the ESP32 BLE Arduino library. Create a 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. How to Control a Servo with an ESP32 ESP32. Oct 11, 2018 · In the above code I have hard coded the battery percentage to be 62% and then increment the value for every 2 seconds. IR Thermostat Control with Arduino Customer Projects. PWM Multiple Sliders This document presents a walkthrough of the GATT Server Service Table example code for the ESP32. Server-Sent Events. We also discussed how to set up BLE in server, client and notify modes using the ESP32, and how to implement BLE communication between two ESP32 devices. Jan 20, 2018 · Espressif ESP32 Official Forum. Start advertising. Bluetooth Low Energy GAP. Output Web Server. Create a Apr 11, 2024 · The ESP32 supports Wi-Fi provisioning over SoftAP (access point) or via Bluetooth Low Energy. 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. This works fine but I need to do this when the RSSI of the device goes above a certain threshold or power to make sure the Client device is close to the chip server. , ESP32-C3-DevKitC-1, etc. After creating a BLE server using ESP32, we can use a BLE application available on the Play store for testing purposes. ESP32 LoRa. With Bluetooth Low Energy, there are two types of devices: the server and the client. ; Service and Characteristic Setup: Creates a BLE service with a custom UUID and a characteristic that can read and write data. ESP32 ESP-NOW. Your smartphone or computer acts as the BLE Controller, managing the connection and communication with the ESP32. When the operation is completed, the callback is called with ESP_SPP_SRV_STOP_EVT. 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. 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。 If you want to use the serial monitor in the Arduino IDE to control the menu with an ESP32-C3 or esp32-S3 board you may have to change the next in the boards. The esp32_ble_server component in ESPHome sets up a simple BLE GATT server that exposes the device name, manufacturer and board. This library comes installed by default when you install the ESP32 on the Arduino IDE. 7 KB). PWM Multiple Sliders Sep 8, 2023 · To build and flash the program of BLE(Bluetooth Low Energy) to ESP32 use the following commands: idf. When I followed the guide, the Neil Kolban's ESP32 library was conflicting with the built-in Arduino IDE ESP32 library. You switched accounts on another tab or window. I use a Characteristic Notify to the client which receives the sensor reading. As you continue your journey in ESP32 BLE development, there are many exciting possibilities to explore. A ESP-BLE-MESH Provisioner can then provision the unprovisioned device and control a RGB LED representing on/off state, see example code . In BLE communication between a client and a server, data is grouped into service and characteristic (an attribute table). I'm not exactly sure how to adjust my code to account for another server connection. Nov 11, 2021 · In this tutorial, you’re going to learn how to make a BLE connection between two ESP32 boards. 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 Jan 7, 2018 · I'm working on patterns to reduce power and working on shutting down BLE but not putting chip to sleep. 10\boards. This is simple guide on how to connect ESP32 as the client to Arduino Nano 33 BLE sense as the server (peripheral) via Bluetooth (BLE) - tech-nickk/Connecting-ESP32-to-Arduino-Nano-33-BLE-sense-via-BLE For the overview of the ESP32 Bluetooth stack architecture, follow the links below: ESP32 Bluetooth Architecture (PDF) Code examples for this API section are provided in the bluetooth/bluedroid directory of ESP-IDF examples. The BLE software stack on the ESP32 consumes a significant amount of RAM on the device. We will learn all the essentials in order to use BLE in ESP32 and configure it as both a Server and a Client. Author: Neil Kolban. py flash monitor BLE Data Exchange. - Send a message longer than 20 characters. Server sends out a counter every second with Notify. Apr 1, 2024 · ESP32 BLE is aimed at battery operated, low-power wireless communication between different BLE Devices. Compatibility. Heres the code: let server = ble_device. To follow this example, you need two ESP32 development boards. The example shows how to use BLE functions with AT commands. Thư viện này sẽ được cài mặc định vào Arduino IDE khi bạn cài tiện ích ESP32. 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。 Jan 29, 2023 · This tutorial explains how to use Bluetooth Low Energy (BLE) with the ESP32. 6. Crashes are likely to occur if you include too many additional components in your device’s configuration. About. May 23, 2021 · Create a BLE Server 2. There is a lot to learn and understand when it comes to powering within the limits of your hardware. 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. Search images: D1 R32 ESP32 This card has classic Bluetooth, BLE, WiFi, ADC, DAC, and more feature. Remember to Jun 4, 2023 · self. Also don't Also, I have found that serving a user-friendly (aesthetically pleasing, feature rich) website from ESP32 tends to be quite slow. Here is the code on esp32: Aug 18, 2021 · I use esp32 4 MB of flash memory as a BLE server. This data can include sensor readings, commands, or any information relevant to your application. So far, I have been able to do a one to one connection and received the orientation and acceleration data. We set the callback of the server, because it is responsible for collecting the information received. Nov 16, 2023 · ESP32 Web Server. Your ESP32 is a “server” that is providing the iBeacon “service”. This functionality is especially useful when using your ESP32 to exchange data with sensors (temperature, humidity, etc. ) at a time!" The net of this post is: 1) Does the BLE specification allow multiple concurrent connections into a BLE server from multiple BLE clients? 2) If yes to #1, does the ESP32 BLE stack support this concept? Oct 28, 2022 · ESP32 BLE Server and Client (Bluetooth Low Energy) Bluetooth Classic Bluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances. This library is compatible with the esp32 architecture. We defined that the Bluetooth device name in this step is "ESP32-BLE" and created a BLE server. ) that are nearby your ESP32. We will also see how can we connect a smart phone with ESP32 BLE Server. Nov 18, 2021 · Testing ESP32 BLE Server. But it would be good if ESP BLE could be client and scan for other Bluetooth devices at the same time. 2. Using BLE on the ESP32. 0, 4. Select the name from the list of detected devices (name ESP32BLE) Test BLE communication using BLE Terminal. Using the pointers we made above we can add the UUID information as well as activate the BLE characteristics. Select BLE_scan. Bạn có thể trải nghiệm tính năng BLE trên ESP32 bằng cách cài thư viện ESP32 BLE trong Arduino IDE. Jul 25, 2022 · Hello all, I am working on an application that uses BLE as a server in an ESP32. On my ESP32, I want to be able to have a callback for GATT characteristic, and another one for the server. Create a BLE Server 2. 1, and 4. Let’s go a little further and see how to scan for nearby BLE server devices with ESP32 BLE scanner. Namely, I need to create a password as an array, and every time I need to connect my phone I will enter it. 0. This are the methods to stop BLE that I have tried so far: btStop(); esp_bt_controller_disable(); esp_bluedroid_disable(); However, none seem to work. I tried to make 2 services. py build idf. h" int32_t Volume = 100000; // Variable to store Volume from SuperPlayer Remote // (100000 = Where encoder on SuperPlayer Remote starts) int32_t OLD_Volume = 100010; // Variable to store Volume value to compare static BLEUUID serviceUUID("4fafc201-1fb5-459e-8fcc-c5c9c331914b"); // The Jul 9, 2021 · I'm trying to use BLE and WiFi on ESP32. Jul 14, 2019 · ESP32 Web Server. The operation will close all active SPP connection first on the specific SPP server, 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. ESP32 Wi-Fi. (Sorry This function stops a specific SPP server. The examples that come with the BLE library will be used and explained. ESP32 BLE Arduino. However, the ESP32-C3 module of the BLE server occasionally reaches to a state that no AT response was returning to the STM side. Configuration of the BLE client on ESP32. 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. I am using the BLE feature to transmit a sensor reading from the "server" to the "client". The communication between server and client will be through BLE where one ESP32 board acts as a BLE server and sends sensor readings 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. One ESP32 is going to be the BLE server, and the other ESP32 will be the BLE client. This is a cheap card ($ 5) with the dimensions and shape of the Arduino UNO, but with the ESP32. Open the app and search for nearby devices. ESP32 MQTT. Jun 1, 2022 · The WiFi services tested were simple WebServer, simple NTP client and a Telnet Server. Setamos o callback do server porque este se responsabiliza por coletar as informações recebidas. Clients connect to it and send a code to open a door. This is a GATT server demo and its tutorial. It allows you to create a BLE server or client, set up services and characteristics, and handle BLE events. Oct 23, 2018 · Normally a BLE modules works either as a server or as a client, here we will use ESP32 BLE as server. May 27, 2020 · You may open the sample code by selecting File > Examples > ESP32 BLE Arduino > BLE_server. Dec 22, 2017 · Adafruit HUZZAH32 ESP32 Board. The first service should send data about the battery charge level. 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. BLE Services and Characteristics. A system where ESP32 becomes a BLE server, iOS and Android be For the overview of the ESP32 Bluetooth stack architecture, follow the links below: ESP32 Bluetooth Architecture (PDF) Code examples for this API section are provided in the bluetooth/bluedroid directory of ESP-IDF examples. I tried to disable the built-in library but it did not work either. get_server(); 5️⃣ Define Server Connect & Disconnect Behaviour: using the server instance there exists a on_connect method for May 11, 2024 · We’ll develop an ESP32 BLE server and then an ESP32 BLE scanner to find that server as a quick introduction to the ESP32 with BLE on the Arduino IDE. ESP32 HTTP GET POST. Configuration variables:¶ mac_address (Required, MAC Address): The MAC address of the BLE device to connect to. When I compile code from Andreas Spiess (BLE_Proximity_Sensor. If I want to implement deep sleep functionality to the server, what would happen to the client? 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。 You signed in with another tab or window. BLECharacteristic* pCharacteristic; declares a pointer to a BLECharacteristic object. I'm using ble server, callback and advertising. void setup() The BLE software stack on the ESP32 consumes a significant amount of RAM on the device. 기억으론 데모 개발 건이 있어서 환경을 꾸몄던 기억 May 26, 2024 · The ESP32 can act as either a BLE Server or a Client. As I've seen they can't be used at the same time, so I'm trying to figure out a way to stop receiving data from a BLE server. In this course you'll dive into 3 different ways to power an Arduino board and learn the habit of researching specifications for your components that will add a layer of professionalism and confidence to your builds. The advantage of the Web Bluetooth design pattern is that your website can be served using regular, more powerful, web infrastructure and the embedded device only provides raw data-points and controls. BLE for ESP32: Example codes for Server and Client to exchange Strings and Integers with PROPERTY_READ, PROPERTY_WRITE and PROPERTY_NOTIFY So, since I'm already using BLE and a webapp, let's toss OTA updates in as the icing on the cake. 4. BLE isn't the best way to do this, but like I said, it's already in use elsewhere. 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. The ESP32 can act as a BLE server or as a BLE client. ESP32 WebSocket. Mạch ESP32 có thể là Server BLE hoặc Client ESP32. 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. For more information, see ESP32 Arduino BLE Library . Jan 7, 2020 · Hello friends, I'll write in this topic about BLE on ESP32, send and receive text, with clock and without clock. In principle other ESP32 boards could be used but testing on an ESP32 Sparkfun Thing was not successful. 2. PWM Slider Web Server. Nov 14, 2015 · Created by Espressif Systems, ESP32 is a low-cost, low-power system on a chip (SoC) series with Wi-Fi & dual-mode Bluetooth capabilities! The ESP32 family includes the chips ESP32-D0WDQ6 (and ESP32-D0WD), ESP32-D2WD, ESP32-S0WD, and the system in package (SiP) ESP32-PICO-D4. This component allows other components to create their own services to expose data and control. We’ll be using the ESP32 DOIT DEVKIT V1 Board. Mar 6, 2024 · ESP32 Web Server. This demo starts a BLE server on your ESP32 and uses an iOS App to send messages to it. This card can be Feb 26, 2024 · Introduction. I am successfully shutting down bt radio I believe but struggling to bring back up the ble services. Once your ESP32 is set up as a BLE server, other BLE devices can connect to it and exchange data. HTTP GET Web APIs. At its heart, there's a dual-core or single-core Tensilica Xtensa LX6 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”). Web Servers. 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. Provisioning over BLE. Releases 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. Mar 12, 2024 · Similarly, a central device can function as either a GATT client or a GATT server. Now that you’ve familiarized yourself with the Bluetooth Low Energy (BLE) wireless communication protocol, including its features, profiles, and interaction with devices, it’s time to put it into practice. GATT Server API . The goal is to be able to advertise, and to manage connections to exchange specific data for each android phone. ESP32 Text Messages. There are several BLE examples for the ESP32 in the ESP32 BLE library for Arduino IDE. Criamos, então, um serviço, bem como as características do envio de dados. We’re going to test BLE communication using the BLE Terminal application. Aug 1, 2021 · I need to put a password for BLE connection of ESP32. Mar 2, 2019 · BLE with ESP32. Here we have divided the complete ESP32 Bluetooth into three segments for ease of understanding. auto_connect (Optional, boolean): If true the device will be automatically connected when found by the ESP32 Bluetooth Low Energy Tracker Hub. For this we will require the nRF android application on our smartphone. ESP32 Bluetooth. I am using bluetooth to connect esp32 to phone and read the output via esp32 bluetooth terminal which I downloaded from Google Play. Mar 17, 2021 · 14A. 1 . The service advertises itself as: 6E400001-B5A3-F393-E0A9-E50E24DCCA9E Has a characteristic of: 6E400002-B5A3-F393-E0A9-E50E24DCCA9E - used for receiving data with "WRITE" Has a characteristic of: 6E400003-B5A3-F393-E0A9-E50E24DCCA9E - used to send data with "NOTIFY" The design of creating the BLE server is: 1. Create a BLE Service 3. E. g. In this tutorial, we’ll cover Wi-Fi provisioning via Bluetooth. Simple example of an ESP32 based Bluetooth Low Energy (BLE) Server. Apr 19, 2024 · - read server's characteristic every second While setting up two identical boards for testing BLE client and server, initial testing went fine and BLE client can read server characteristic without problem. Mar 16, 2022 · Hello! I have been working on connecting one BLE client ESP32 to two ESP32 servers connected to BNO055 9DOF sensors. This service exposes measurement data from environmental sensors and supports a wide range of environmental parameters like temperature, humidity, pressure, and others. 1. Reload to refresh your session. ESP32 is called a GATT Server (Generic Attribute Profile Server). Code: Select all #include <cstdlib> #include <string> #include "BLEDevice. Making a BLE Server with your ESP32 [Guide + Code] ESP32. reading time: 10 minutes What is meant by that is that a BLE peripheral can only be connected to one central device (a mobile phone, etc. 0. You signed out in another tab or window. ESP32 begins BLE server. As usual, we set up Serial and set the LED pin to OUTPUT but then we also initialize the ESP32 as a BLE device and set its name: <p>// Create the BLE Device<br>BLEDevice::init("ESP32 UART Test"); // Give it a name</p> Next, we create the BLE server, 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。 After we have seen how to set up the ESP32 module as a BLE server. Create a BLE Descriptor on the characteristic 5. - Board D1 R32 ESP32. Aug 18, 2007 · 아두이노 ESP32 - BLE_server에 Advertising Data 실시간 업데이트하기 아두이노 ESP32 환경 설정 - 윈도 편 약 1년 반전에 ESP32를 다뤄본 적이 있는 것 같다. Create a BLE Characteristic on the Service 4. Read the documentation. 7 of ESP BLE Arduino. Goal ist that scan and connect result from BLE Client is as follows like with original LEGO HUB: Feb 1, 2022 · How to use BLE in ESP32? ESP32 BLE (Bluetooth Low Energy) Tutorial. Demonstration with BLE scanner app: Go to the play store; Search for the BLE scanner and download the app; After installing the app turn on the Bluetooth. This BLE OTA update employs the following method. The second one should communicate with the connected phone. skwsb axyo vynen akxqaovpv nxufqvg ubiahi xdn vxciv rbbp yhy