how to config and use stm32g070rbt6 usart3(pc4 pc5)

[pz.2]

the same config in USART1 and USART2 is normal,but in USART3 is doesn't work

[waclawek.jan]

Read out and check/compare to working/post content of USART3 and GPIOC registers.

JW

[Nikita91]

Do you set the GPIO AF to AF0?