Honored ContributorMy board's extend flash is AM29LV320.when i use flash programmer to download the code,it shows the following prompt:
Using cable "ByteBlasterII [LPT1]", device 1, instance 0x00 Resetting and pausing target processor: OK Reading System ID at address 0x00404040: verified No CFI table found at address 0x00200000 Leaving target processor paused Can anyone help me in sorting out this issue? THS! Handsome
Honored ContributorTry running the nios2-flash-programmer.exe from the nios2 command console with the --debug option and look at the CFI table. The most likely cause of this problem is the address lines are off by one i.e. the SOPC A0 bit should go to the A(-1) bit of the Flash.
Honored ContributorHave you selected "Byte" or "Word" mode for your flash ??? Type following command in nios2 command console:
nios2-flash-programmer --base=0x00200000 --debug If you see the cfi table, then you can be shure that your flash is correct connected.Honored Contributorhi,i connected EA[21..0]with A[20..0]of flash----AM29LV320,and the pin-EA0 is floating!but it still dosen't work!what can i do!it's so annoying!
Honored ContributorHi,Maestro666,as your advice,i typed the commond----nios2-flash-programmer --base=0x00000000 --debug
It still shows that:No CFI table found at address 0x00000000. I locked the base_address of flash,make it to 0x00000000. BTW,I made pin--WP/ACC and NC(13-pin) floating. t(setup)=50ns;t(wait)=40ns;t(hold)=35ns; Waiting for your reply! Thanks!Honored ContributorHello handsome, WP/ACC could be left floating, because there is a pull up resitor inside.
You have set the base address to 0x00000000, correct ? Set t(setup), t(hold) and t(wait) to 200ns, we can increase the speed later! Have you connected pin BYTE to VCC or GND ??? It's really important to know that!Honored ContributorHi,Maestor666,your reply is quite in time,thanks!
yes ,i have set base address to 0x00000000,and connected pin byte to vcc(3.3v),and between them i added a r-4.7k. BTW,i set it to work in WORD-mode,so address width is 21-bit(i don't use the pin-13,someone use it,and set address width to 22-bit,but i think this doesn't matter ),data width is 16-bit. pin15(ry/by)is also floated! https://www.alteraforum.com/forum/attachment.php?attachmentid=1316 https://www.alteraforum.com/forum/attachment.php?attachmentid=1317 https://www.alteraforum.com/forum/attachment.php?attachmentid=1318 HandsomeHonored ContributorI have set all the time to 200ns,but it also dosen't work!v..........
Honored ContributorTake a look at the collateral for the Nios II 2c35 development kit (http://http://www.altera.com/products/devkits/altera/kit-nios-2c35.html), which has a very similar flash.
I think you need to be connecting the BYTE signal and dropping the two least significant address bits. Cheers, - UraHonored Contributorthanks for your reply!i'll make a try!
Honored Contributorthanks for your reply,i'll make a try!Hope it will work!
