Hey All, I have a Blackfin 533 EZKit. I have ahd great success with every peripheral except the SDRAM. The doccumentation states that the SDRAM bus is automatically configured so long as the auto-configure box is checked under Target Options(which it is) I must be oversimplifying this because now the SDRAM should be memory mapped from 0x0000 0000 to 0x07FF FFFF, but when I try to write to 0x0000 0000 and then read from it, I get undefined data back. It will change from one attempt to the next. I usually get 0x0C or 0x90. If I try to use DMA to write a small array into memory, I get a DMA error. I can't seem to find where the errors are further defined as more than just DMA error. If I veiw the memory using the Memory Viewer, the memory shows 33 CC 33 CC.... I saw that someone else once had a problem with this and it was solved by downloading an update. Before I upgraded to version 3.5, the EZKit would send nothing but errors if I tried to access SDRAM. At least that is fixed now. So does anyone know the correct procedure for performing a write/read to the SDRAM on the Blackfin 533 EZKit? I will be eternally grateful Cheers, Rob
Blackfin DSP SDRAM Memory
Started by ●January 28, 2004
Reply by ●January 30, 20042004-01-30
"Rob Reed" <lord_jag@hotmail.com> wrote in message news:e9b2a09d.0401281159.33760f47@posting.google.com...> Hey All, > > I have a Blackfin 533 EZKit. I have ahd great success with every > peripheral except the SDRAM. >I'd call 1-800-ANALOG-D and ask their tech support. Wish I could help you, but my SDRAM simply works, and I don't know why :-) Did you start with a current project or did you start from scratch? --Keith Brafford