AnsweredAssumed Answered

STM32F7 DISCO - Storing data in NOR

Question asked by ahmed.tanveer on Nov 12, 2015
Latest reply on Feb 19, 2016 by jaekel.torsten
Hello everyone,

I just started using the STM32F7-DISCO board and i wanted to start with writing a small UI app with a single image, with the image data being stored in the NOR flash. but the application doesn't seems to load the image on the screen.

To write the image data to NOR i used __attribute__((section(".ExtQSPIFlashSection"))).
I checked the MAP file and checked the memory using ST-LINK and i can confirm that the data is written to NOR, but for some reason my application cannot read it.
Load Region LR_QSPI (Base: 0x90000000, Size: 0x0000459c, Max: 0x00ffffff, ABSOLUTE)
  Execution Region ER_QSPI (Base: 0x90000000, Size: 0x0000459c, Max: 0x00ffffff, ABSOLUTE)
  Base Addr    Size         Type   Attr      Idx    E Section Name        Object
  0x90000000   0x0000459a   Data   RO          331    .ExtQSPIFlashSection  wndmaindlg.o

Image data (trimmed for display here.
static const U8 _acImage_0[17818] __attribute__((section(".ExtQSPIFlashSection"))) = { huge array here}