i have 25 constant float arrays each of [128][12] when i used sections
in SDRAM 10 of this arrays has address starting from 0x0200000 which i
couldn't access when i checked SDRAM its 0x3b0000 length which enough
to contain my data but i don't know why it doesn't fit.
can any one tell me if i could use any other memory or how to store them.
thanks
problem with SDRAM in c5510
Started by ●July 4, 2008
Reply by ●July 7, 20082008-07-07
Aliaa-
> i have 25 constant float arrays each of [128][12] when i used sections
> in SDRAM 10 of this arrays has address starting from 0x0200000 which i
> couldn't access when i checked SDRAM its 0x3b0000 length which enough
> to contain my data but i don't know why it doesn't fit.
> can any one tell me if i could use any other memory or how to store them.
I don't understand the question clearly. But one suggestion is to check byte-address vs. word address. Most TI 55xx
docs show memory map info (start locations and size) using byte addressing; however your code would be using word
addressing if it's handling ints or floats. So you may have to "rethink" with different start and size parameters.
-Jeff
> i have 25 constant float arrays each of [128][12] when i used sections
> in SDRAM 10 of this arrays has address starting from 0x0200000 which i
> couldn't access when i checked SDRAM its 0x3b0000 length which enough
> to contain my data but i don't know why it doesn't fit.
> can any one tell me if i could use any other memory or how to store them.
I don't understand the question clearly. But one suggestion is to check byte-address vs. word address. Most TI 55xx
docs show memory map info (start locations and size) using byte addressing; however your code would be using word
addressing if it's handling ints or floats. So you may have to "rethink" with different start and size parameters.
-Jeff
