Esp32 ble uart. available () in other controllers/mode.

This project was developed in attempt to create flexible wireless communication solution for some embedded controller. Bài 3: Lập trình ESP32 BLE Chế độ Server. In the Extension, select ESP-IDF option: We will click the ‘ softAP ’ under the uart tab. html@coxxect This is a library for robust, near real-time communication between two UART devices. Communication. Browse the GATT table and find the UUID and handle of the characteristic that controls the ESP32. Just to be clear, the address is visible, but not the service UUID. py build idf. 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. ESP32-S3-GEEK is a geek development board designed by Waveshare, onboard USB-A port, 1. 0 or higher (most smartphones) ESP32 development board (note that there are many versions that would also work just fine) Micro USB to program the ESP32 dev board. Apr 5, 2020 · Postby priema » Sun Apr 05, 2020 5:49 pm. # This example demonstrates a peripheral implementing the Nordic UART Service (NUS). yaml. Connect to your ESP32 if it was found. One ESP32 is going to be the BLE server, and the other ESP32 will be the BLE client. Saved searches Use saved searches to filter your results more quickly Universal Asynchronous Receiver/Transmitter (UART) Introduction . Once your ESP32 is set up as a BLE server, other BLE devices can connect to it and exchange data. charge controller) The ESP32 board can also be directly integrated in a charge controller or other devices and communicate with the host device via UART interface (again using the ThingSet ESP32 BLE Arduino. 14-inch LCD screen, a TF card slot, and other peripherals. Read the documentation. I had four GATT services available on my BLE dongle, i. Start advertising. Aug 12, 2017 · I've been using a third party app on my Samsung Android phone to connect to my ESP32-C3 via BLE uart interface, and have no problem receiving data packets sent at 100mS intervals. Sep 8, 2023 · To build and flash the program of BLE(Bluetooth Low Energy) to ESP32 use the following commands: idf. Fortunately this list is pretty simple! Android device with Bluetooth 4. ESP32 can interface with other systems to provide Wi-Fi and Bluetooth functionality through its SPI / SDIO or I2C / UART interfaces. WebApp allows the user to pair with our ESP32 BLE Server using Web Bluetooth. [ESP32 Only] UART-BLE Passthrough Mode. Successfully merging a pull request may close this issue. This library makes it simple to send and received data that would normally go to or be sent by the serial monitor. 蓝⽛ esp32 bluedroid 层次关系图 esp_api ble profiles tt gap sdp bt profiles bta_api bt Saved searches Use saved searches to filter your results more quickly Nov 28, 2022 · Create a BLE Characteristic on the Service 4. details and code availabl It's confirmed to work with ESP-IDF v5. /* Central Mode (client) BLE UART for ESP32 * This sketch is a central mode (client) Nordic UART Service (NUS) that connects automatically to a peripheral (server) * Nordic UART Service. Nov 5, 2022 · Bluetooth et WiFi : La carte ESP32 inclut un module WiFi et Bluetooth pour faciliter la communication sans fil avec d’autres dispositifs. Development Goals 현재 목표는, 버튼을 통해 인터럽트를 주고 그 인터럽트를 통해 microchip과 esp32는 서로 uart를 통한 communication으로 data를 주고 받는다. Ghi dữ liệu từ Esp32 lên google sheet . SFerret/ESP32-BLE-Intelligence-car. Supported devices. Links:https://github. It could be a useful starting point for someone wishing to build a mobile weather station or similar device based on ESP32. Pingback: How to Fix Broken Packages in Ubuntu - IoTbyHVM - Bits & Bytes of IoT May 16, 2018 · In my projects with ESP32, for the Ble connection, I use the C routines of pcbreflux ( ble_uart_server): (thanks pcbreflux for it). Maintainer: Dariusz Krempa. 04 Description: Hi there, I'm new to UART and would Jan 8, 2019 · E (584) BT_BTM: LE EA En=1: cmd err=0xc. py. The problem is, that the BLE_client does not find the service of the BLE_uart board. The interface is very similar so most usage is identical. It is based on the BLE implementation originally created by Neil Kolban and included in the Espressif esp32 distribution. I guess the heap is taking up too much space September 2022. Jun 1, 2022 · The ESP32 C3 only has on core. Checks for and makes a reference to one or more characteristic UUID in the current service. 3V3 and G (GND) pins. This project is also available on-line at Single Board BLE to WiFi Bridge -- ESP32 C3 with BLE + WiFi running together ESP32 只需极少的外围器件，即可实现强大的处理性能、可靠的安全性能，和 Wi-Fi & 蓝牙功能。 超低功耗 ESP32 专为移动设备、可穿戴电子产品和物联网应用而设计，具有业内高水平的低功耗性能，包括精细分辨时钟门控、省电模式和动态电压调整等。 Create a BLE Server 2. to spice up the project! Nov 16, 2023 · Web Bluetooth (also sometimes referred to as Web BLE) is a technology that allows you to connect and control BLE-enabled devices, like the ESP32, directly from your web browser using JavaScript. [ESP32 Only] BLE AT Example. 0. Bluetooth Low Energy GAP. : For me, the interesting GATT services were the two marked in upper image. --> App sends data to ESP (trigger for ESP to send saved motion Step 1: Gather Parts. Jun 12, 2021 · Bài 2: Lập trình ESP32 BLE Chế độ Client. C’est pour cela, on va créer deux programmes: une application mobile avec App Inventor pour le smartphone et un programme micropython pour la carte ESP32. You will get a notification that the project has been created. Nov 6, 2017 · I am trying to connect two Adafruit HUZZAH32 ESP32 boards via bluetooth. Note: Don't confuse the ESP32 with the ESP32-S2, which is a different module with a similar 4 days ago · Pass the uart and pins used to communicate with the co-processor, such as an Adafruit AirLift. ESP32-D0WD-V3. 4GHz WiFi and BLE 5, with integrated 16MB Flash & 2MB PSRAM, provides I2C port, UART port, and GPIO header, bringing more possibilities for your project. [中文] This document provides an introduction and detailed command examples to illustrate how to utilize Bluetooth® Low Energy AT Commands on ESP32. zip May 28, 2021 · Download and install nRF Connect app from the play store. Pingback: Johnny Five : The JavaScript Robotics & IoT Platform. 1. ## Features - Implements the Nordic UART Service (NUS) for BLE communication. The changes were straight forward. We developed it on python 3. Apr 1, 2024 · Click on the ‘scan’ icon on the top right corner. g. Application Example; API Reference Conclusion. Nov 2, 2022 · La carte ESP32 prend en charge le norme Bluetooth LOW ENERGY (BLE). (se relevant code below) The problem is, that when the UART cables are connected and we actuallt get som data, BLE stops working. But a friend reports that he has not been able to connect with his iOS devices (phone, tablet). We send sensor readings from one ESP32 board to another via BLE server and client. Encrypt Bluetooth LE connection. uart t/sdio espressif systems 1/29 提交⽂档反馈 2024. ESP32 integrated in device (e. Lập trình Esp32 giao tiếp Node-Red. Bluetooth LE client reads and write services. Grab another ESP32 (while the other is running the BLE server sketch). This was achieved by using two ESP32 boards one that acted as a server and the other that acted as the client using Bluetooth. Star. available () in other controllers/mode. Once connected, it will display the list of services and its characteristics. スマートフォン・アプリ「Adafruit Bluefruit L Some time ago I wrote a bit about iOS and BLE using the RedBear iOS library from this page (read my previous article here). Tham khảo hướng dẫn: Cách lập trình ESP32 bằng Arduino IDE (Windows, Linux, Mac OS X) Mạch ESP32 có thể là Server BLE hoặc Client ESP32. In this example rxValue is the data received (only accessible inside that function). Example 3. Now click ‘ Create project using template uart_echo . You can see ‘ESP32-BLE-Server’ in the list. There are a few potential advantages of using bluetooth to connect to and control an embedded device. py flash monitor BLE Data Exchange. It will give you a quick overview of BLE (specifically how data is organized in BLE, how two BLE devices communicate with each other), and how to use BLE on the ESP32. [Arduino] ESP32 BLE + 앱 연동 기초 예제(2) May 16, 2022. USB-to-UART Port and ESP32-S3 USB Port (either one or both), default power supply (recommended) 5V and G (GND) pins. A Universal Asynchronous Receiver/Transmitter (UART) is a hardware feature that handles communication (i. 0 or later. Using some #ESP32 with BLE UART Client and Server to send Data to a Cloud-Based Service like ThingSpeak. 1. The app will start scanning for BLE Devices and lists them out. Header Block The two tables below provide the Name and Function of the pins on both sides of the board (J1 and J3). I am currently building a project with following vision: - buffers motion data on the ESP32 in a file -> send this data after a while (once per hour) to an app (iOS/Android) -> working approach: --> App connect to ESP32 via BLE -> WORKING. Pingback: Android Things - OS for IoT and embedded devices - IoTbyHVM. Pairing (and bonding) is supported on some ports. ESPHome component to monitor and control a ANT-BMS via UART or BLE. This library is compatible with the esp32 architecture. For details, please refer to example ble_throughput in BLESerial was written by Ian Archbell of oddWires. Fork 1. Bluetooth Classic의 경우 SPP(Serial Port Profile)라는 프로파일을 이용해 UART와 같이 데이터를 주고받는 기능을 사용할 수 있다. # Set the EoL characters to \r\n. The functionality I'm looking for is to be able to connect any PC to the ESP device as an "Outgoing" COM port and be able to send and receive data just like uart_read_bytes and uart_send_bytes works. The example we chose above is simplest example to start with uart. Aug 13, 2020 · In my case, on one of my projects I worked with OBD2 Bluetooth dongle where UART/Serial communication was enabled over BLE. To debug and program ESP32 using a USB port, the serial port which is known as Universal Asynchronous Receiver/Transmitter ( UART) Communication is used. Contents. Currently this supports Bluetooth Low Energy (BLE) in Central, Peripheral, Broadcaster, and Observer roles, as well as GATT Server and Client and L2CAP connection-oriented-channels. Sep 19, 2020 · From what I've seen, most examples so far work out-of-the-box when you connect 2 or more ESP32 devices, but not for 1 ESP + Windows PC. ble_uart_repl. Jun 10, 2021 · Open a new issue and follow the posting instructions. ’. Also, onboard is an RGB LED, IO pins on a 0. The pin names are shown in ESP32-S3-DevKitC-1 - front. -Device2 (ESP32-DevKitC) runs the ble_mesh_node project. Click ‘Choose Template’ button to proceed forward. ble_uart_peripheral. Die eigentlich Bibliothek funktioniert nicht daher gibt es eine interne eigene Version: esp32_ble_arduino_id1841. 0-alpha1 IDE name: Arduino IDE Flash Frequency: 80Mhz PSRAM enabled: No Upload Speed: 115200 Computer OS: Ubuntu 20. 3 were used. This board comes with an onboard ESP32 WROOM-32 WiFi, Bluetooth Classic, BLE Module, and a CAN Bus port with a transceiver. Postby not-the-messiah » Thu Nov 25, 2021 12:15 pm. Basics of Bluetooth Low Energy Bluetooth Low Energy (BLE), sometimes referred to as “Bluetooth Smart,” is a light-weight subset of classic Bluetooth introduced as part of the ESP32 BLE uart client example. ESP32 begins BLE server. # This example demonstrates the low-level bluetooth module. Start the service. Introduction. With Esp-IDF 3. Contribute to chandong83/esp32-ble-uart-client development by creating an account on GitHub. Launch nRF Connect app and scan for devices. For most # applications, we recommend using the higher-level aioble library which takes # care of all IRQ handling and connection May 28, 2022 · Hello folks, I'm using an ESP 32 in BLE mode where I want to use it to fetch data from mobile and respond accordingly much like how we use Serial. com In your Arduino IDE, click on File > Examples > ESP32 BLE Arduino. 하지만 BLE의 경우 해당 기능이 존재하지 않는다. Bluetooth® Low Energy (Bluetooth LE) Bluetooth Low Energy. A device may operate in multiple roles concurrently. SFerret / ESP32-BLE-Intelligence-car Public. BLE functions for ESP32 This library provides an implementation Bluetooth Low Energy support for the ESP32 using the Arduino platform. 12 :07:23. Apr 13, 2020 · You do not have the required permissions to view the files attached to this post. Compatibility. Programming is accomplished through the popular Arduino IDE connected to the USB-to-Serial converter with USB-C connector, automatic bootloader and reset. 099 - > loop high water mark:8436. The ESP32 on the other hand provides an excellent platform for BT to UART bridge implementation. And drilling down does show the two characteristics: They just do not show up in a scan! : (. Create a BLE Service 3. Create a BLE Characteristic on the Service 4. blogspot. The issue is like it has a class mentioned below which helps to receive the data/string/char from bluetooth app. Here's a simple example of using BLE to connect CircuitPython with the Bluefruit Connect app. A hardware UART should be preferred because of the high baudrate (115200 baud). The name of the project will be modified after this, so make sure you change it back. The uart, rts, and cts objects are used to communicate with the HCI co-processor 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”). Hosted Solution (Linux/MCU) with ESP32 (Wi-Fi + BT + BLE) - espressif/esp-hosted Scans for devices and reads service UUID. The maximum throughput of Bluetooth LE communication between ESP32 boards can reach up to 700 Kbps, which is about 90 KB/s. Example 1. When I check the high water mark I get the following: Code: Select all. The existing settings in ESP32 board support V2. Lập trình Esp32 giao tiếp với Firebase. The library allows for easy communication between an ESP32 device and a BLE client, utilizing the Nordic UART service for a simple, serial-like communication channel. com/pcbreflux/espressif/tree/mas Sep 29, 2023 · 1) Go to Tools > Board, scroll down to the ESP32 section and select the name of your ESP32 board. Create a BLE Descriptor on the characteristic 5. goto Peripherals -> uart and select the “uart_async_rxtxtasks”. Supports 2. This is important as it will be used in Part B. # # Tested with the Adafruit Bluefruit app on Android. I don't get any GAP-events about it but the device stops advertising All ESP32 Series of modules have a wide operating temperature range of -40°C to 105°C, and are suitable for commercial application development with a robust 4-layer design that is fully compliant with FCC, CE-RED, SRRC, IC, KCC & TELEC standards. E (598) BT_BTM: LE PA SetData: cmd err=0xc. It even supports working in classic BT and BT low energy (BLE) modes simultaneously. Aug 24, 2022 · For ESP-IDF target, we have chosen ESP32 module. Bluetooth® API. This API is intended to match the low-level Bluetooth Feb 11, 2017 · Example how to use BLE with esp-idf and testing with some mobile apps from Nordic Semiconductor (nRF Connect, nRF UART, nRF Toolbox): Content: GAP, GATTS, Service, Characteristic, Properties, Descriptor, read, write and notify BLE values. I don't have any iOS devices to test with. This will open up several examples to choose from for example BLE_client, BLE_notify, BLE_server, etc. If the COM port is grayed out, this means you don’t have the required USB drivers. On the other hand, Apache NimBLE based stack is Bluetooth Low Energy only. The ability to accept commands including one allowing you to monitor the bluetooth May 16, 2022 · BLE 통신으로 데이터 주고 받기 예제. Cannot retrieve latest commit at this time. I want to call this class in my loop statement This repository contains a simple Bluetooth-to-UART bridge roughly mirroring how the HC-05 behaved, but adds a handful of new features: An escape sequence allowing you to break out of your serial bridge to send commands to the wireless unit itself directly. Composants nécessaires The UART-TTL (labeled as RS485) socket of the BMS can be attached to any UART pins of the ESP. In my case, it’s the DOIT ESP32 DEVKIT V1 board. Oct 13, 2023 · In this video we look at how to make a wired to wireless serial / UART bridge using Bluetooth, ESP32, and the Arduino programming environment. master. 137 - > radio high water mark:8052. E (584) BT_BTM: BTM_BlePeriodicAdvSetParams, instance = 0, Before set the periodic adv parameters, please configure the the extend adv to nonscannable and nonconnectable first, and it shouldn't include the legacy bit. This data can include sensor readings, commands, or any information relevant to your application. In this tutorial, we will perform UART or serial communication between two ESP32 boards using UART hardware library of Arduino IDE. e. Hardware: Board: ESP32C3 Dev Module Core Installation version: 2. In your Arduino IDE, go to File > Examples > ESP32 BLE Arduino and select the BLE_scan example. 0, I migrated everything to C++ except the pcbreflux ble C routines (I have a C++ wrapper class for them - thanks Kolban I seen how do callbacks in your Ble C++ lib). In conclusion, we have learned how to perform communication between ESP32 BLE server and ESP32 BLE client using Arduino IDE. Universal Asynchronous Receiver/Transmitter (UART) Introduction . And txValue is the data to be sent, in this example just a byte incremented every second. ANT-BLE16ZMUB, 16ZMUB00-220501A, May 18, 2019 · Using smartphone app "Adafruit Bluefruit LE Connect"The LED board connected to ESP32 is controlled by BLE uart communication. Oct 2, 2019 · The BLE-task sets up a number of serivces (like in the gatt_server-example) and the UART-task sets up communication over UART using an event queue. Nov 11, 2021 · In this tutorial, you’re going to learn how to make a BLE connection between two ESP32 boards. I was using an ESP32 for a recent project and didn't want to make any modifications to my iOS app so I needed to tweak the ESP32 example BLE UART sketch a little to work with my iOS stuff. , timing requirements and data framing) using widely-adapted asynchronous serial communication interfaces, such as RS232, RS422, RS485. import bluetooth import io import os import micropython from micropython import const import machine from ble_uart_peripheral import BLEUART _MP_STREAM Sep 13, 2019 · -Device1 (ESP32-DevKitC) that runs the ble_mesh_client_model project. The example shows how to use BLE functions with AT commands. This example is designed to demonstrate the use of ESP32 Micropython together with Web Bluetooth. The co-processor must have been reset and put into BLE mode beforehand by the appropriate pin manipulation. Click finish to generate the project. For users to make a choice: For usecases involving classic Bluetooth as well as Bluetooth GitHub - SFerret/ESP32-BLE-Intelligence-car: 基于ESP32和MicroPython的蓝牙控制循迹小车. First of all, I paired with my BLE device and observe GATT entities. Notifications. 🛹 BLE Testing Mit dem ESP32 lässt sich ein BLE Uart sehr einfach realisieren. 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”). Bạn có thể trải nghiệm tính năng BLE trên ESP32 bằng cách cài thư viện ESP32 BLE trong Arduino IDE. The Bluedroid based stack (default) supports classic Bluetooth as well as Bluetooth Low Energy (Bluetooth LE). Nov 22, 2021 · Re: ESP32 wifi + ble not playing nicely with LVGL. -nRF Mesh app is used for provisioning these two nodes-The pin numbers 16 and 17 (on the (ESP32-DevKitC) are used to send a message (UAR1) with a terminal emulator (termite) See full list on randomnerdtutorials. L’objectif de ce tutoriel est de pouvoir connecter la carte ESP32 au smartphone via bluetooth. ESP32 UART Communication Explained with Example. Therefore I use the BLE_uart and the BLE_client example. Optional: sensors, LED's, etc. 2) Go to Tools > Port and select a COM port available. The client can send data to the server by writing to this RX Characteristic. The throughput of ESP32 Bluetooth LE depends on various factors such as environmental interference, connection interval, MTU size, and the performance of peer devices. Use CircuitPython 6. ESP32 can perform as a complete standalone system or as a slave device to a host MCU, reducing communication stack overhead on the main application processor. This is a simple project which uses and ESP32 to act as a bridge to communicate messages received from a BLE Client (Android App) sender, to a UART connected device (Arduino) receiver. Aug 12, 2021 · esp32-ble-example-debug. [中文] ESP-IDF currently supports two host stacks. # Proof-of-concept of a REPL over BLE UART. 1" pad. check “Create project using one of the templates”. A UART provides a widely adopted and cheap method to realize full-duplex or half-duplex data exchange ESP32藍芽對連 其實溝通功能也能用其他方式實作(Wifi、紅外線、UART…) 只是因為剛學完ESP32的藍芽通訊，就想說能不能實現兩個ESP32之間的藍芽通訊 剛好之前有在網上買了一塊Goouuu-ESP32(還沒玩過)，可以配合上課拿到的NodeMCU-32S來玩 有參考以下影片： Jul 3, 2022 · Send/receive command via BLE UART between Central (Espressif ESP32-C3-DevKitM-1) and Peripheral (AI-Thinker NodeMCU ESP-C3-32S-Kit). Hybrid Wi-Fi & Bluetooth Chip. com/2022/10/ble-uart-communication-between-esp32-c3. The example shows how to build BLE SPP (Serial Port Profile, UART-BLE passthrough mode) with AT commands. Releases UART to Bluetooth bridge for ESP-IDF. 04. Thư viện này sẽ được cài mặc định vào Arduino IDE Apr 11, 2022 · 이전 글인 esp32 study를 바탕으로 communication을 시도해보았다. Feb 26, 2019 · When you reset the ESP32, you can put it in WiFi mode (the default), or in BLE mode; you cannot use both modes simultaneously. This does not provide the code for the Arduino in which will be connected to the ESP32. (Sorry iPhone users) Upon pairing, the WebApp reads the hardware and software version numbers hard-coded into the sketch on the ESP32. Mar 26, 2019 · 14 thoughts on “ ESP32 BLE on Arduino IDE with UART Test ” Pingback: ESP32 BLE with DHT11 - How To - IoTbyHVM. In part 1 we f Feb 27, 2023 · Re: ESP32-S3 as BLE HCI-UART Host only Post by diolupo » Tue Feb 28, 2023 9:51 am I've already obtained some successful results porting the default ESP-IDF implementation (that uses the internal VHCI interface) to use a real HCI-UART interface (now I'm able to send HCI commands / receive HCI events to an external nRF52 that runs Zephyr). - Provides a simple API for sending and receiving data over Bluetooth LE AT Examples. Nordic nRF52 Sep 8, 2018 · Serial output of WiFi Kit 32 BLE scanner: nRF Connect app scan results: Connecting to the UART Service (BLE_uart sketch running on the ESP Dev Module) does show the Nordic UART service UUID. 0 and Bluetooth Mesh; Advertising and scanning; GATT client and server; BLE security and encryption; Low-power modes for extended battery life; Overall, the ESP32 is an excellent choice for developers who need a powerful microcontroller that provides robust BLE capabilities. Contribute to nopnop2002/esp-idf-uart2bt development by creating an account on GitHub. The RF Coexistence mentions a number of ESP32 menuconfig options none of which are configurable via the Arduino IDE. Click on ‘CONNECT’ and smart phone starts connection with ESP32 BLE Server. With Web BLE, you can create web applications that interact with your ESP32 devices via Bluetooth, enabling you to control GPIO pins, exchange data For local access, the ESP32 can directly serve a website or provide a Bluetooth Low Energy interface for a mobile phone app. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. esp32는 그 data를 다시 ble를 통해 phone app으로 주고 받고, socket과도 wifi를 통해 data를 주고 받는다. Connectivité : La carte ESP32 est équipée de plusieurs ports de communication, tels que USB, UART, I2C et SPI, ce qui la rend idéale pour la communication avec d’autres composants électroniques. Oct 9, 2022 · code available: https://coxxect. 6. ESP32 BLE - UART 项目介绍 MicroPython for ESP32 开发板低功耗蓝牙（BLE）研究学习项目的分支项目，使用ESP32开发板通过UART与其它设备交换数据 如何使用呢？ 下载并烧录自定义的固件到开发板 如果你用的是官方最新固件的话可以参考不想烧录自定义固件？部分 Jul 15, 2021 · Some of its key BLE features include: Support for Bluetooth 5. 9 with LEGO EV3, SPIKE Prime and other MicroPython (ESP/STM32) modules using our LEGO Breakout Wifi boards. Dec 7, 2017 · 위의 설정으로 제공되는 아두이노 ESP32의 예제 코드 중 BLE_uart 소스코드를 분석해봤다. And txValue is the data to be sent, in this example just a byte incremented This BLE OTA update employs the following method. In this article, we will discuss the examples: BLE_server and then BLE_scan. You do not have the required permissions to view the files attached to this post. , timing requirements and data framing) using widely-adopted asynchronous serial communication interfaces, such as RS232, RS422, and RS485. The BLE server is not visible. First, we will set up our ESP32 as a server using the BLE_server example and then we will use the A Universal Asynchronous Receiver/Transmitter (UART) is a hardware feature that handles communication (i. Connects to a server's address with the desired service UUID. Lập trình ESP32 giao tiếp với IOT Platform và các hệ thống khác trên Internet. Author: Neil Kolban. zz jr mc ta zl ax xr dt uy rp