Solved
Problem with Code Generated by CubeMX (5.6.1) for STM32F103C8 microcontrollers ...
When I run code generated by CubeMX (version 5.6.1) using Atollic IDE or VisualGDB w/ VisualStudio and STlink as Segger or as STlink after first run that don't works well (Read Errors) I can't connect anymore the microcontrollers for debug (virually they are destroyed for debug) . If I write the code manually and in my old projects it never happens. Is it some declaration on some header? Can anyone help me?