Thanks for the hint about i2c_config_t declaration ! I'll try that too.

About the clock frequency, actually the graphs enclosed in the first message have been made using 10KHz (just because the shapes of the rising fronts are obviously better). I found no difference compare to 100KHz, though.

Thanks for the reply. Yes, 12K resistors are present on both SDA and SCL lines. I however tried enabling/disabling internal pull-ups resistors without any visible effect. I've removed the error checking lines in the sample test I've enclosed, both i2c_master_cmd_begin calls return OK (0). I'll try y...

I'm stuck trying to interfacing a RTC (PCF85063A) It seems bit 7 of every byte that it's been read is set to 1. To debug I'm trying to write/read a value into device's RAM cell (reg 0x3) In the below example it writes 0x05 and it reads 0x85. Here are the oscilloscope views of write and read cycles: ...

Hi,
did you find a solution ? Thanks

I found the answer by myself.

Kolban's library already takes care of the right events but also defines a maximum number of handles that can be managed.

In BLEServer.h I've increased this value to 30:

Hi, In my application I use three services and one of them contains several characteristics. The issue is that not all of them are advertised. I've read that it can happen when you have multiple requests of adding characteristics / descriptors / services and you should wait for onDescriptorWrite eve...