i did purchased a demo board stm32h750b-dk Demo Board, and i use USART1 ,Tx -PB6， Rx- PB7. it works well. no issue at all. but i need use USART2, Tx-PD5, Rx -PD6 . it no function at all. all setting - baud rate and other same setting.No idea what wrong.

[KLau.1]

i did purchased a demo board stm32h750b-dk Demo Board, and i use USART1 ,Tx -PB6， Rx- PB7. it works well. no issue at all. but i need use USART2, Tx-PD5, Rx -PD6(expand CN2 STMod+ connector) . it no function at all. all setting - baud rate and other same setting.No idea what wrong. appreciate ST member able assist.