The problem of reading the data of the memory

Do you use a SDRAM controller?

Do you want to access it from a CPU or from custom hardware?

yes i have a sdram controller;

i want to read the data from the address through the application.

thank you very much.

You can use C pointers for that.

Do you also use the sdram to store the software itself? In that case you'll have to use a memory allocation function, such as malloc(), to allocate a memory area. If not, you can just get the address and size of your memory area from system.h.