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What is Bluetooth GATT server?
A GATT Server is a device which stores attribute data locally and provides data access methods to a remote GATT Client paired via BLE. A GATT Client is a device which accesses data on a remote GATT Server, paired via BLE, using read, write, notify, or indicate operations.
How do I connect to Arduino ble?
On the main menu of Arduino IDE, go to Tools>Boards>Boards Manager.
- Enter nano 33 ble in the search window and install Arduino nRF528x Boards (Mbed OS).
- The installation process will take a little while, once finished, click on close.
- Connect the Arduino to your host computer using the USB cable.
How does GATT Server work?
An important concept to understand with GATT is the server/client relationship. The peripheral is known as the GATT Server, which holds the ATT lookup data and service and characteristic definitions, and the GATT Client (the phone/tablet), which sends requests to this server.
How does ble work as a GATT server?
The setup method gets the BLE module ready to act as the GATT server. The loop method goes through a fake sweep of the accelerometer gyroscope module (AGM) and generates a random number from 1 to 100 for these values. The battery is drained by 1% to simulate battery use.
Are there any Arduino boards with Bluetooth 4.0?
This library supports all the Arduino boards that have the hardware enabled for BLE and Bluetooth 4.0 and above; these include Nano 33 BLE, Arduino NANO 33 IoT, Uno WiFi Rev 2, MKR WiFi 1010. Bluetooth 4.0 includes both traditional Bluetooth, now labeled “Bluetooth Classic”, and the Bluetooth Low Energy (Bluetooth LE, or BLE).
How to read a value from the GATT server?
Read: the Client (Android App) can read a value from the GATT Server (Arduino) Write: the Client can change a value from the GATT Server Indicate: the Client will be notified if a value changes from the GATT Server and the Client is expected to send confirmation to the GATT Server
How is a Bluetooth LE radio different from a UART?
Unlike standard bluetooth communication basically based on an asynchronous serial connection (UART) a Bluetooth LE radio acts like a community bulletin board. The computers that connect to it are like community members that read the bulletin board.