BLE publishing and subscribing

[Marco_Ami]

Hi All,
i have the need to creat an APP that:

• connects to BLE device (mac address known)
• reads the battery level
• sends a given data (in my case the number 4040) to the proper service/characteristic.

By now i looked online for tutorials and im only able to search for BLE devices, list them and connect to the “selected one”.
I would like to skip the “search” step since i already know the MAC of my device and furthermore in my APP i cant press or select anything (phone used for remote monitoring).
Furthermore im not getting results when i try to read a given service/characterisitc (eg Battery level). Same when i send data.
Can somebody post the blocks i have to use to finalize my APP?
U can use fake MAC address. Same for UUID serv/char.
Thanks

[Juan_Antonio]

Try with Screen1.Initialize

Information about BLE:

BLE ESP32. Bluetooth. Send. Receive. Arduino IDE. Multitouch

Hello friends, I'll write in this topic about BLE on ESP32, send and receive text, with clock and without clock. Notify. I'll use the codes of Neil Kolban. 0.- Board D1 R32 ESP32. This is a cheap card ($ 5) with the dimensions and shape of the Arduino UNO, but with the ESP32. [esp322pin_h] Search images: D1 R32 ESP32 This card has classic Bluetooth, BLE, WiFi, ADC, DAC, and more feature. This card can be programmed with the Arduino IDE. [comparativa] There is another smaller ESP32 mode…

[Marco_Ami]

These are my blocks but its not working.
The device has to be paired already?
Further question: when i read something (eg batterly level) , then how can i show it in a label?