how to config the "evkbimxrt1050_dev_hid_generic_freertos" project to use SDRAM

[steven_zhang]

i tried to use sdram in the "evkbimxrt1050_dev_hid_generic_freertos" project，i configed the project as the attaches。 my PC can not find the HID device while debugging ，can anybody tell me how to config the project correctly？

[kerryzhou]

Hi Steven Zhang,

    If you are using the USB with SDRAM, you need to configure the USB buffer to the nonCacheable area.

   So you also need to add the below configuration in your project:

  Another simple way, you also can try to disable the cache, comment the cache:

    SCB_EnableDCache();
    SCB_EnableICache();

In board.c BOARD_ConfigMPU().

You can try it on your side.

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

Have a great day,
Kerry

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[steven_zhang · Accepted solution]

by open  the SDRAM_IS_SHAREABLE ，it works。

[kerryzhou]

Hi Steven Zhang,

  That's very good to hear it works.

   Shareable means non-cacheable by default.

  Do you still have questions about this topic?

  If yes, please kindly let me know.

  If your question is solved, please help me to mark the correct answer, just to close this case, thank you!

Have a great day,
Kerry

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Note:
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- We are following threads for 7 weeks after the last post, later replies are ignored
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