Blank display if S1820 probe enabled

It seems the problem is not any DS1820 library but about the BSP library is not friendly with Mbed’s delay functions/methods (thread_sleep_for(ms); ThisThread::sleep_for(ms);) and the HAL_Delay(ms); must be used. Maybe someone clever could explain this to us.
However you can try to import this example DISCO-F746NG_OneWire .

BR, Jan