I migrated from Nucleo STM32F767 to Nucleo STM32H743. I am using Keil compiler version 5.25.2 and the HAL interface. I'm generating the startup code from STM32CubeMx version 4.25.0. The clock setup for the H743 doesn't work correctly as compared to the configuration generated for the F767. I continue to have trouble with the UART/USART's and am guessing that something regarding the SystemClock_Config() function is not setup correctly from STM32CubeMx.