How to write to DDR of a DE1-SoC using the ARM processor?

Hi,

I could not find any further information regarding the error itself, have you tried booting up your board to see if the DDR is up from preloader?

Here is the get_editable_mem_instances descriptions for reference:

https://www.intel.com/content/www/us/en/programmable/quartushelp/13.0/mergedProjects/tafs/tafs/tcl_pkg_insystem_memory_edit_ver_1.0_cmd_get_editable_mem_instances.htm

You may check all other functions available here:

https://www.intel.com/content/www/us/en/programmable/quartushelp/13.0/mergedProjects/tafs/tafs/tcl_pkg_insystem_memory_edit_ver_1.0.htm

regards.

I've loaded the preloader following the instructions from this tutorial (https://www.intel.com/content/www/us/en/programmable/documentation/lro1424280108409.html) but the error messages remain the same. Should I be doing any additional step afterwards? Is it necessary to use Quartus to do this?

Because so far what I've done is load the preloader as explained in the tutorial and run a simple hello world using ARM Development Suite Gold Edition. Any help is appreciated.

Thank you but I've already checked the functions documentation.

Hi,

I suggest that you check the serial terminal to see the preloader/boot log to see if the DDR calibration was successful.

Then, please run the same "Hello World" application, but build it located in the SDRAM memory instead of the on-chip RAM as in the example. Instead of running the TCL script to see everything is functioning accordingly.

The log should look something like this with the DDR calibration passing:

U-Boot SPL 2013.01.01 (Oct 21 2013 - 13:44:30)

BOARD : Acme Dynamite Board

SDRAM: Initializing MMR registers

SDRAM: Calibrating PHY

SEQ.C: Preparing to start memory calibration

SEQ.C: CALIBRATION PASSED

SDRAM: ECC Enabled

ALTERA DWMMC: 0

Regards