How to do the bootable image upgrade after production?

[calvin1]

Hi, 

Our platform is the iMXRT1020, we are using the XIP QSPI flash as our bootable image storage, since in our design we only embed a USB-A female port, not USB-Micro OTG, could we program the bootable image through Serial Downloader, or said, to program XIP flash? Can I upload the generated bootable image through an external USB storage? or we actually need to design our own Flashloader?

Also, I wonder how could we switch the bootmode after production? since it should be switched by I/O pins, is there any soft way to switch it?

Please suggest if there is any designed solution, thanks a lot.

[jorge_a_vazquez · Accepted solution]

Hi Calvin Lin

Could we program the bootable image through Serial Downloader, or said, to program XIP flash?

Yes, you can use the mfgtool with the USB interface.

Can I upload the generated bootable image through an external USB storage? or we actually need to design our own Flashloader?

For this case you would need to create your own USB-MSD flashloader, as the ROM code doesn't do this.

Also, I wonder how could we switch the bootmode after production? since it should be switched by I/O pins, is there any soft way to switch it?

No, unfortunately, there isn't any software methode to jumpt to serial downloader from the application image.

Hope this helps

Best regards

[calvin1]

Hi Jorge,

Could you please explain in advance for the USB interface connection? We would like to built our device with a USB-A receptacle port (the same one as PC), but I don't know what USB cable I can use to connect each other(PC to iMXRT), or to provide our customer that cable for their future firmware upgrading.

[jorge_a_vazquez]

Hi Calvin

Do you mean in the hardware layout requirements? I recommend you to base your board in the desing of the evaluation board of NXP (EVK). You can also check the following post:

https://www.nxp.com/webapp/Download?colCode=MIMXRT1020HDUG 

according to your description, in the case of the cable, you would need a USB-A to USB-A

Best regards

Jorge Alcala