Good afternoon, I'm trying to use the CEC interface of the STM32F769I-DISCO board.I closed the SB5 jumper on the MB1232 auxiliary board.I adapted the program CEC_DataExchange intended for STM32F769I_EVAL to the STM32F769I-DISCO board. But I didn't get the

[Vlaty.1]

 the result. The oscilloscope connected to the SB5 jumper showed only PIN PA15 control. I compared the value of the CEC registers from the cubeIDE register window and the values of the same registers from memory. I got a strange result.The numbers are different , why?

Sincerely, Alexander.