QSPI in STM32 || Boot from EXT Memory || XIP || N25Q 

Excellent collection of videos, thanks for the collaboration

For the Project2 that you made it for the JumpFuntion, There is an exception for H7 series and its the clock of QSPI unit that must be set to PER_CK. Other things are great in the video and thank to you for the shared information.

Great video! Would love to see a QSPI with MDMA video

The video looked good. There are questions. Why is the timer interrupt not executed when it is set to address 0x90000000? If I don't set the timer interrupt, it works fine.

The most difficult part here is creating your own STLDR file. How do you think - is it possible instead of this to build the target project as a bin file and write it to memory as is (transfer it via some interface or SD card from a PC and write it to external memory by second project), and then configure XIP execution in a third project ?

Nice video, thanks :)

Excellent.👌

What i don't understand, what is the function/purpose of the external loader when you debug the code you showed us? Does it read or write something? What does it do?

in respond to your reply in the video, could you do a seperate video on H750 Discovery QSPI XIP external memory ?

Thanks!

Very useful

thanks for this really useful video. My question is that is it possible to use both internal and external flash for application program at the same time?

Is it also possible to debug a custom external loader? My custom external loader isn't working, that's why.

i am not able to read more than 256 bytes in externnal spi I am reading 4 bytes of structure after 256 bytes data is rollover

Hi, Thanks for the video. Why did you config 2 region in MPU? One is 1MB, executable and the other is 16 MB, unexecutable, is the latter defined just for the const?

Hello @ControllersTech, I follow the same steps and wrote code for stm32l476 disc board code is running fine, but I am not able debug code, target is not halting in the main() of application code even if I am using breakpoints. I am getting "Error: illegal address for breakpoint type". Can you please tell me how to solve this issue?? MPU configuration are not available in stm32l476 disc board.

Great video, will try it on a w25qxx even if it is not on debugging list... any suggestions? thanks

Excellent video, congratulations! I'm trying to do as you teach with a board with STM32H750VBT6 and MT25QL512 memory. I can do the first part without problems, but I can't run the program like the second part. It does the normal compilation and loading but the user program still doesn't run.

for those who can't debug like the program in the external flash there is a trick that works for me try to debug another project like the one that is located in the internal flash which is used to jump to the external flash program then terminate it and then debug the program in the external flash again and do as video and it should work and don't forget the program in the internal flash that jumps to the external flash program have to be uploaded first and jump successfully to the start of the program in the external flash so you can debug the way descried in the video otherwise it won't work and the debugger will shut down when you try to halt it .

Hi, I tried to execute a peace of code on a stm32h747i MCU and managed to program code on QSPI successfully and it verified. but when I press the reset in debug window the debugger does not goes to QSPI address in 0x90000000. should I do anything different from this video while editing system file? regards

Is it possible to write data to ext flash in memory mapped mode? - by dereferencing the address 0x90000000 and write some data to that address ?

For l552 Micro for mx25lm51245g flash memory how i do?

Hi, how do we know the address to be used(like you have used 0×90000000 here) to access the external flash memory?

Any practical example where it's implemented? IMO, it's complicated to the point where you'd be better off just choosing a Linux board and complete your tasks on it. Video is really nice though!

Hello friend and you can also use W25Q flash?

wiil try on my new board

How to run code from DRAM