Or use this block in header:

esp32 has only 2 cores, that means you can run at most 2 tasks at the same time, other tasks are awaiting to resume. They will be switching in round robin, assuming that all tasks are with the same priority (i2c tasks). You are only complicating your code and life, because its easier to maintain 1 t...

With software i2c you can read 1 device at the time too. Eventually 2 devices if you use 2 cores, but you have 2 hardware i2c on esp32.
For sure you cant read 8 devices at the same very moment.

It was just suggestion, nothing more.

https://docs.espressif.com/projects/esp ... and-values

https://github.com/espressif/esp-idf/tr ... vs_rw_blob

so i want to develop esp32 board with i can connect until 8 i2c sensor and i can connect the same device with the same adresse at the same time There is something like I2C expander. You can connect more than one i2c slave on the same line: https://www.ti.com/lit/ds/symlink/tca9548a.pdf?ts=159490934...

Sorry, but all links broken here:
https://github.com/espressif/esp-idf/tr ... p_ble_mesh

this is result:
https://docs.espressif.com/projects/esp ... 2/404.html

The bug linked on GitHub was an issue introduced in ESP-IDF v4.1 development (regression when we added support for ESP32-S2 Beta), so it shouldn't be a bug in v3.x at all. I cant agree: I (497) cpu_start: Application information: I (502) cpu_start: Project name: I (508) cpu_start: App version: 1.0....

For sure you are missing CCC descriptor (BLE2902) on that characteristic.

I think you can ignore differences in other parts.
For sure you cant change the fact that Generic Access characteristics are read only. I doubt IDF bluedroid have such option.

When you are sending from nRF connect, what value type you are using?