I have just ported the RTOS uKOS (www.ukos.ch) on the new stm32H743. Everything work fine at the exception of the usart2. I have strange situations with the interruptions, and as soon as I receive a character in the interruption handle, I have a crash machine (hard fault). It is tricky and difficult to figure out what is the real problem. I replaced the usart2 with the 3 with exactly the same initializations and everything work like a charme. I suspect a silicon problem (I use the revision Y) but I didn't find anything concerning this behavior in the errata. Has anyone experienced the same behavior? Any help or suggestion from ST?