How to diagnose/fix ''Contents mismatch'' error and problem with loading firmware to board taking too long

[stuart woodbury]

Posted on June 28, 2017 at 23:18

I have a 4MB program which takes ~15 minutes to load to the board. That's problem &sharp1. Once it loads, I get a bunch of errors, like this: 'Contents mismatch at: 00200000H  (Flash=08H  Required=D8H) !'. (it repeats for 00200001, all the way up to 002000C5H, where it says 'too many errors to display').  I'm wondering how I can diagnose/fix this issue. 

-also, I'm attempting to use the quad-spi flash memory and the 128mbit sdram. I have pictures attached of the configuration. 

-some interesting thing i noticed:

   -the errors start at 0020000H, and in the memory map, that's where startup_stm32f769xx.o is. 

   - in UM2033, page 20, it says the virtual COM port is configured as 115200 b/s, so uploading should take < 1 min

#use-stm32f769-discovery-board #st-link/v2-in-circuit-debugger

[stuart woodbury]

Posted on June 29, 2017 at 14:53

I got it to load on the board, but it still takes 18 min. I only needed 1MB of flash, besided the quad-spi, so i was able to get rid of one of those sections. I also tried allocating just one 16MB block of sd-ram, and allcoating the on-chip RAM as one block. After updating the flash algorithms, the load was successful. 

[Tesla DeLorean]

Posted on June 29, 2017 at 17:25

Buy a faster JTAG pod

Set the Flash Algorithm SRAM to use more of the available/contiguous memory

Separate out the data going to the QSPI, and write a better loader