I think that flag does not exist in esp-idf 3.x.

Here is example code:
https://github.com/chegewara/esp32-OTA-over-BLE

And here is esp-idf issue:
https://github.com/espressif/esp-idf/issues/3923

Hi.
What version of arduino-esp32 are you using?
Please check if you have this patch included:
https://github.com/espressif/arduino-es ... 2974/files

Simple answer is yes, you can build it on BLE client example.
Longer answer is that you need deep knowledge about HID and BLE itself.

It all depends what HID host you want to build. Will it works with only one particular HID device or you want to build generic host that will work with any HID device.

Building BLE HID is easy, but to build HID host, especially generic host its a lot work.

When you create function where you pass typedef-ined callback function then you do it without arguments, because typedef already know how many and what kind arguments has this function. typedef int (*callbackFunctionArgument) (const int arg1, const int arg2); typedef void (*callbackFunction)(void); ...

You have to track CCCD value for every connected client device, for example create structure that will keep CCCDs values and client address. When you want/need to send notification/indication just check if client registered for it. But this is only required if you are working on battery and want to ...

Yes, i had it working. Currently i am trying to write OTA over BLE example and will create repository on github when i finish it. It is working now, but after OTA update i have very strange issue, my esp32 with new fw is restarting 3 times with unusual error logs. I am using custom service and chara...

https://github.com/chegewara/esp32-mbedtls-aes-test/blob/master/main/main.c As Angus said, nonce value is changed by encrypt/decrypt function and you cant pass it to the next function. You can see i have 2 nonce, one for encrypt and one for decrypt function. static void ctr() { size_t nc_off = 0; si...