In NIOS II, Eclipse tool Unresolved inclusion: "altera_avalon_pio_regs.h" in Eclipse® project Unresolved inclusion: "altera_avalon_uart_regs.h" in Eclipse® project - In NIOS II, Eclipse tool Unresolved inclusion: "altera_avalon_pio_regs.h" in Eclipse® project Unresolved inclusion: "altera_avalon_uart_regs.h" in Eclipse® project How to solve these errors? please help Replies: Re: In NIOS II, Eclipse tool Unresolved inclusion: "altera_avalon_pio_regs.h" in Eclipse® project Unresolved inclusion: "altera_avalon_uart_regs.h" in Eclipse® project Hi @ABola2 , You can recreate the project if you have .sopcinfo file & add your .c source file to project and check. Attach error message. Which example design are you using? Can you share it? Regards Anand Replies: Re: In NIOS II, Eclipse tool Unresolved inclusion: "altera_avalon_pio_regs.h" in Eclipse® project Unresolved inclusion: "altera_avalon_uart_regs.h" in Eclipse® project Thanks for the advise. I have the correct header files, Still seeing the same error, even trying to clean the project, and rebuild. can you give more suggestions? Replies: Re: In NIOS II, Eclipse tool Unresolved inclusion: "altera_avalon_pio_regs.h" in Eclipse® project Unresolved inclusion: "altera_avalon_uart_regs.h" in Eclipse® project Hi @ABola2 , First check if you have altera_avalon_pio_regs.h & altera_avalon_uart_regs.h files in design directory " <Project>_bsp->drivers->inc " folder. If yes, Clean the project and build the project. If no, You have to add appropriate headers which are available. Refer the image attached. Let me know if this has helped resolve the issue you are facing or if you need any further assistance. Regards Anand