Bitmap integrity

[BGuth.1]

Our design involves storing the images in external flash. Images are fetched in run time from external flash and displayed on LCD. 

Is there a built-in integrity check to verify the validity of the bitmap before displaying on the LCD?

A question came up where external flash wear and tear can lead to change in binary bits. Now these corrupted images can cause problems.

 

[Joe WILLIAMS]

Hi BGuth.1

 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

 

Kind Regards

Joe

STMicro Support

[Tesla DeLorean]

You really should CRC, hash or sign your firmware images. You are responsible for that in your build and sign-off processes, and within your code prior to execution or hand-off to the application code.

Some of the Micron QSPI/OSPI devices provide for a built in CRC

STM32 have a CRC32, some have HASH and PKA

[BGuth.1]

I did try that. Because of the size of the area images are occupying, it is adding to the delay of system startup. This is affecting the user experience. I want to see if I can get rid of it if there is already in ibuilt integrity check.