u/Algstud

Hi, I have been working on the ESP32-S3 with ESP-IDF for the past two weeks. So far, I have learned the basics and how to work with GPIO pins, how to read analog signals, and also how to generate PWM signals.

I also worked with some wired display devices like lcd, led matrix, 7 segments and tm1637 and did some communication protocols: UART, SPI, and I2C. I tested them by connecting the ESP32-S3 with an Arduino, and it worked.

Now I am trying to learn Bluetooth and Wi-Fi, and I got lost.

I spent the day learning about Bluetooth and how it works, the frequencies it uses, the channel techniques, and the two types of Bluetooth: classic Bluetooth and Bluetooth Low Energy (BLE).

I also learned about the protocol layers and structure, but it is still theoretical for now. When I tried to apply it, I got lost. I know there are examples, but they are confusing and poorly documented. They mostly feel like showcase examples without much explanation.

Is there a good source to learn Bluetooth and Wi-Fi connectivity?

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