SEMC Initialization for IMXRT

yamakatb — Thu, 19 Mar 2020 00:12:00 GMT

Hello,

MIMXRT1064 is used in IAR SDRAM using EWARM IDE.

My SDRAM manual:
https://www.winbond.com/resource-files/w9825g6jb_a05_20170306.pdf

Question:
I am trying to initialize SEMC in the startup routine. There is SEMC_Init after __low_level_init, pin_mux initialization, clock initialization.
Immediately after setting a break and looking at the memory window, the initialization has not been performed and the memory cannot be filled.

On the other hand, if you perform the same initial processing as above in the main, it will succeed.

Is there any missing processing?

Thanks for any help, thank you.

T.Y.

Re: SEMC Initialization for IMXRT

kerryzhou — Fri, 20 Mar 2020 08:45:22 GMT

Hi T. Y.,

If you want to initialize the SDRAM, you also can refer to the SDK IAR project, configure it in the .mac files:

More details, you can check the SDK IAR project, sdram item in the workspace.

Wish it helps you!

If you still have questions about it, please kindly let me know.

Have a great day,
Kerry

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SEMC Initialization for IMXRT

Re: SEMC Initialization for IMXRT