Hello,
I have few comments here, and would appreciate your feedback:
- The timing issue has been resolved, so I would expect the DDR3 to operate normally. The Nios II ELF was successfully downloaded from the command line, which effectively eliminates any DDR3 calibration failures. If calibration had failed, the download would not have succeeded due to an unresponsive DDR3 controller.
- I am not sure which script did you use to download the ELF. I recommend including the -r option (if not used) while downloading the elf to issue a reset. I also suggest running the following command after the ELF download completes and before opening the UART terminal (or even while its open, and use another command line to run the command): nios2-download --reset-target
- I still need to review the linker script settings, so kindly share the screenshot with me. if possible, share the settings.bsp file.
- I also need to know which JTAG UART driver is being used—whether it is the standard driver or the fast driver. This can be checked in the BSP Editor under the General settings.
- Additionally, there is a warning in the BSP Editor indicating that .stdin, .stdout, and .stderr are not assigned to an output device. Although a JTAG UART instance appears to be present in the design, the standard I/O streams are currently set to “none.” I would recommend to update the BSP settings to redirect these streams to the JTAG UART.
- Finally, I would like to know if you tried running the hello world example before moving to the real SW or FW. Also, did you try running it from on-chip RAM instead of DDR3?
Thank you
New Contributor
