Any RT1021 Examples to Write to QSPI from RAM?

[samsaprunoff]

Good day All,

Are there any software examples that demonstrate how one can erase/write a sector of QSPI Flash while XIP from the same QSPI Flash?  I recognize that you cannot do this directly, but would require copying the erase/write firmware to RAM, then execute from RAM, and once complete return back to the QSPI firmware.  I thought before I start doing this I would see if there were any examples that I could learn from.  Basically what I want to do is to store some data into flash (e.g. Ethernet MAC Address, etc) and then retrieve this info upon the next reboot.

Thanks in advance!

Cheers,

Sam

[kerryzhou · Accepted solution]

Hi  samsaprunoff ,

   Now, our example mainly copy all the project to the internal RAM, and download that code to the external flash, after booting from external flash, ROM will copy the code to the internal RAM, and run from internal RAM.

   If you still want to run it XIP, give you the suggestion:

   define the flash operation code to the RAM directly, you can define some RAM area to put the flash operation code. 

Relocating Code and Data Using the MCUXpresso IDE 

  You can try it, whether it works OK or not.

Wish it helps you!

Kerry

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[samsaprunoff]

Good day Kerry,

Thank you for your prompt response and the information!  I will give it a look and let you know how it goes.

Cheers,

Sam