01-11-2012 11:22 AM
Hi,I got a running system with a Nios II Core, LCD Character, LEDs (PIO), SDRAM, Intervall Timer, System ID, OnChip, clock, JTAG_UART. Now I added a SPI Interface and it stopped to work so I deleted the Interface again. The Problem now is that my system doesn't work anymore. If I want to load my C-File in the NIOS IDE on my board the following message promt: Using cable "USB-Blaster [USB-0]", device 1, instance 0x00 Processor is already paused Reading System ID at address 0x20081048: verified Initializing CPU cache (if present) OK Downloading 20000000 ( 0%) Downloading 20008798 (79%) Downloaded 34KB in 0.6s (56.6KB/s) Verifying 20000000 ( 0%) Verifying 20008798 (79%) Verified OK Starting processor at address 0x200001B4 My first try to solve the problem was deleting the SDRAM because I found some Issues where it was told that it could depend on the SDRAM. But it didn't help. The same error exist. The point is that the system worked before and i don't know if i change something and I don't recognize it. My second try was to make the NIOS II tutorial again and it works but there is no SDRAM in the system. What I can do is to rebuild my system again but I want to know how to get the problem fixed. So I appreciate a solution from somebody!!! Regards!
01-12-2012 08:06 AM
Hi,I just set my reset_n to "1" that the reset has no effect any more. I also just reabuild my the whole system and it worked but I´m suspect the clock assignment because I tried it ,in my new design, with 125Mhz and it didn't work. So I adjusted the frequency to 50MHz and it worked. For this reason I tried the same at my old design but it didn't work. But I'm appreciate more hintes!