After update the ststm32 to the newest, something was wrong about VECT_TAB_OFFSET?

[KiraVerSace]

Hello, I use bootloader + application in my stm32l476rg, so 120KB was used for bootloader, and the reset used for application.

At last, I changed 2 places:

1. Modified the ldscript.ld file Add LD_FLASH_OFFSET = 0x00020000; and modified

/* Memories definition */
MEMORY
{
  RAM     (xrw)     : ORIGIN = 0x20000000,   LENGTH = LD_MAX_DATA_SIZE
  RAM2    (xrw)     : ORIGIN = 0x10000000,   LENGTH = 32K
  FLASH   (rx)      : ORIGIN = 0x8000000 + LD_FLASH_OFFSET, LENGTH = LD_MAX_SIZE - LD_FLASH_OFFSET
}

2. Modified the platform.ini file Add (this for the interrupt offset)

build_flags =
     -DVECT_TAB_OFFSET=0x00020000

and (this for jlink download)

board_upload.offset_address = 0x08020000

And all the system worked well, after I update the PIO, when I complie the program, too many warnings like:

ignore the warnings and the application can not start from the bootloader.

I have no idea, where should I change the value of VECT_TAB_OFFSET, At last I delete the

build_flags =
     -DVECT_TAB_OFFSET=0x00020000

and add #define VECT_TAB_OFFSET 0x00020000 in the system_stm32l4xx.c file

there also a warning, but works well

Could you help me? Thank you !

[valeros]

Hi @KiraVerSace, starting from Arduino core v2.7.0 the VECT_TAB_OFFSET macro is a default flag. You can adjust its value directly in your platformio.ini:

board_build.flash_offset = 0xYOURVALUE

This value will be assigned to VECT_TAB_OFFSET and -Wl,--defsym=LD_FLASH_OFFSET flags.

[fpistm]

Note: VECT_TAB_OFFSET can be redefined since a while. It is redefined thanks a flags mainly when a bootloader is used. Nothing related with the 2.7.0 version.

[KiraVerSace]

Hi @KiraVerSace, starting from Arduino core v2.7.0 the VECT_TAB_OFFSET macro is a default flag. You can adjust its value directly in your platformio.ini:

board_build.flash_offset = 0xYOURVALUE

This value will be assigned to VECT_TAB_OFFSET and -Wl,--defsym=LD_FLASH_OFFSET flags.

Thank you for your help, I will try use board_build.flash_offset tomorrow,

but I don’t know what do you mean about the - -defsym , what the relationship between them?

[KiraVerSace]

Note: VECT_TAB_OFFSET can be redefined since a while. It is redefined thanks a flags mainly when a bootloader is used. Nothing related with the 2.7.0 version.

Thank you for your tips But I really don’t know what do you mean, I use bootloader written by myself. In my application I use the VECT_TAB have nothing to do with the bootloader, they are independent

[KiraVerSace]

Hi @KiraVerSace, starting from Arduino core v2.7.0 the VECT_TAB_OFFSET macro is a default flag. You can adjust its value directly in your platformio.ini:

board_build.flash_offset = 0xYOURVALUE

This value will be assigned to VECT_TAB_OFFSET and -Wl,--defsym=LD_FLASH_OFFSET flags.

I also want to know how do you know this, where is the help documentation which mentioned it?

[RedEchidnaUK]

I can't seem to get VECT_TAB_OFFSET to work at all in the STMduino environment. This is my platform.ini

[env:bluepill_f103c8_128k]
platform = ststm32
board = bluepill_f103c8_128k
framework = arduino
upload_protocol = stlink
debug_tool = stlink
upload_flags = -c set CPUTAPID 0x2ba01477 ; ID for F103 clone
build_flags = 
 	-D VECT_TAB_OFFSET=0x08003000 ; Set Vector Tab offset, doesn't work
board_upload.offset_address = 0x08003000 ; Set flash offset

I've also tried adding,

board_build.flash_offset = 0x08003000

I'm also not sure if I'm supposed to put in the full memory location or just the hex offset, but I've tired both with no success.

For now, the only way I've managed to get it to work is to manually edit the offset in platformio-build.py, but then you get lots of warnings.

Edit: typo in address

[fpistm]

You talk about offset. So I guess it should be:

build_flags = 
board_upload.offset_address = 0x00003000

[RedEchidnaUK]

Unfortunately that doesn't work either, or at least it doesn't run. Did you mean board_upload.offset_address or board_build.flash_offset? Although, I've tried both and neither work.

[fpistm]

I don't know. I do not use pio. Only comment to point that here it talk about offset not base address + offset. 😉

[xiezhoubin]

Hello, I use bootloader + application in my stm32l476rg, so 120KB was used for bootloader, and the reset used for application.

At last, I changed 2 places:

1. Modified the ldscript.ld file Add LD_FLASH_OFFSET = 0x00020000; and modified

/* Memories definition */
MEMORY
{
  RAM     (xrw)     : ORIGIN = 0x20000000,   LENGTH = LD_MAX_DATA_SIZE
  RAM2    (xrw)     : ORIGIN = 0x10000000,   LENGTH = 32K
  FLASH   (rx)      : ORIGIN = 0x8000000 + LD_FLASH_OFFSET, LENGTH = LD_MAX_SIZE - LD_FLASH_OFFSET
}

2. Modified the platform.ini file Add (this for the interrupt offset)

build_flags =
     -DVECT_TAB_OFFSET=0x00020000

and (this for jlink download)

board_upload.offset_address = 0x08020000

And all the system worked well, after I update the PIO, when I complie the program, too many warnings like:

ignore the warnings and the application can not start from the bootloader.

I have no idea, where should I change the value of VECT_TAB_OFFSET, At last I delete the

build_flags =
     -DVECT_TAB_OFFSET=0x00020000

and add #define VECT_TAB_OFFSET 0x00020000 in the system_stm32l4xx.c file

there also a warning, but works well

Could you help me? Thank you !

你好，我也在使用arduino软件框架开发stm32，在Platformio中编写程序。目前在编写IAP程序时遇到了一点问题，bootloader程序正常运行，但是app程序始终无法跳转运行成功(用STM32CUBE IDE编译的app程序就没问题)。方便留个微信联系方式交流下吗？我的微信是：XZB1436056045