W25Q FLASH Memory || Part 8 || How to create an External Loader

[@ZOLDAIOQUE88MADACI]

I like this series of external flash memory...please as you have done before for ye SD CARD for fatfs file management..I heard of the LittleFS library for the flash memory..please such a video I'll be thankful

[@wegi9621]

+1

[@silelis1980]

Any chance to cover memory mapping and w25q128 on stm32h7a3? PLS. It have octoSPI interface and configuratin is bit different.

[@dawidbankowski1153]

@ControllersTech Will there be video about QSPI as firmware flash storage place? I mean in stm32 flash bootloader and in external flash main firmware application? I assume that it is similar to standard bootloader main aplication code with difference tnat main application flash adress is 0x09000000000 but ... propably some differences should appear... assuming: initialise in bootoader QSPI map mode???

[@ControllersTech]

There is already a video on xip. Check qspi playlist.

[@rohitkhandait6190]

@ControllersTech Can you please check and confirm whether we can debug the code running from external qspi memory in xip mode for arm Cortex m4 based mcu and if possible can you please make one video on it??

[@ControllersTech]

There is already a video on xip. Check the qspi playlist.

[@rohitkhandait6190]

@@ControllersTech In Cortex m7 based mcu I am able to debug but not able to debug in Cortex m4 based mcu can you please check on that??

[@ControllersTech]

I will be honest with you here. I connected the W25q chip using the breadboard and wires. Now the chip isn't responding, so I can't test it. Also I can't find any dev board (ST's or custom), which is not cortex M7 based and contains the W25Q in QSPI mode. Using wires for QSPI was not a good idea from the beginning but the chip worked so I made the video. If you have the link to the board which have the memory soldered into it, I will test it for sure.

[@rohitkhandait6190]

​@@ControllersTech Thanks for the reply, you can use any STM32F4xx series based board with Qspi peripheral and any NOR flash. In my case I have STM32F469 Disco board and on board MT25Q128 nor flash. Code is running from QSPI memory but I am not able to debug code (more precisely not able to halt core). Breakpoints not working...

[@chiragRathod-pd2xp]

Hi @ControllersTech I tried code execution from Qspi memory in stm32f469(xip). Application code is running fine but I am not able to debug application code and not able to set breakpoints while code running from external flash. Any suggestions please??

[@ControllersTech]

use external loader in the debug configuration

[@nimishpalod5540]

Thanks for making this video. Can you please teach how to debug application code from STM32CubeIDE running from external flash. Like I am able to flash code using external loader but I am not able to debug the code executed from external flash. I am using STM32F4xx series Microcontroller with micron MT25xx NOR Flash.

[@ControllersTech]

watch video #2 in QSPI playlist.