I understand of course, it will take some time. Anyway, I want to thank you for help. I will wait for some results. I also can prepare some PCB with STM32F030RC and send for tests.

Hi LeighM, I make changes in 32F030RC.fcdx. (UART4 to USART4 and UART5 to USART5) It fix compilatin problem. It's possible now to add correct UART and pins of the controller. No problem with compilation to HEX. There is still a problem with enabling the UART4 and UART5. I wrote a simple program to c...

Hello,
Thanks so much for suggestion. I will make it of course. Anyway I run Uart4 and Uart5 by change it to "Software" and choose correct pins. It works, but interrupts still not. I will put a short program with my results soon. Thanks again.

Hello, I'm a F9 user. I just start the project based on STM32F030RC and got some problems with using UART4 and UART5. Uarts 1, 2 and 3 are ok (succesfully tested), but I can't compile to HEX (no problem with compiling to C) when I use UART4 or UART5. I can't use them. Could you help me to activate t...