Hello,
I realy feel stupid bothering you with this problem, since it's probably due to my inexperience with altera products and/or bad AN comprehension.
I designed a robot controler device in VHDL, including an "economic NIOS".
The components of the SOPC are:
- cpu
- jtag-uart
- onchip memory (ram)
- avalon to external bus bridge
- clock source
- epcs serial flash controler
- RS232-uart
As I uploaded the sof file in RAM, then the ELF, there was no problem.
If I upload a pof file in Flash, then a ELF in RAM, it works too.
My problem occurs as I try to upload the ELF and the pof in Flash: if I turn the power off, then on again, nothing seems to occur, except the leds that are slightly lits.
I read the Nios II Flash Programmer, but obviously missed my mistake.
Here is my procedure:
1)generate SOF file.
2)convert it in POF.
3)upload it through usb-blaster by "active programming" (RUN/PROG button on PROG)
4)launch the eclipse's "flash programmer"
5)set up using the .sopcinfo
6)select the Elf file
7)a- if the RUN/PROG button is on RUN, everything seems ok until I turn the DE2 off and on again
7)b- if the RUN/PROG button is on PROG, I get an "error code 8" that I didn't found any documentation on.
I tried to find on the web a "flash uploading for dummies procedure" but didn't.
Thank you for your help and your patience!
