• State Not Answered
  • Locked Locked
  • Replies 4 replies
  • Subscribers 22 subscribers
  • Views 25129 views
  • Users 0 members are here
Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Error: Flash Download failed - "Cortex-M3" after FLASH_EnableWriteProtection

M D

Hi.

I was trying to protect my custom bootloader pages but the call

FLASH_EnableWriteProtection

always returned with error, so I followed the advice at

www.st.com/.../forums-cat-8438-23.html

and found that

FLASH_EnableWriteProtection

returned SUCCESS if called after

FLASH_EraseOptionBytes

Sice then however, I'm not able to re-program the board (MCBSTM32) and i always get the message:

Error: Flash Download failed - "Cortex-M3"

I tried the suggestion at

http://www.keil.com/support/docs/3342.htm

but it didn't works (not much related to my problem because if I try to program a different board - another MCBSTM32 - I have no problems).

Maybe I should have restored the content of the option register after the call to

FLASH_EnableWriteProtection

??

Is the micro lost forever ??

Thaks in advance

Parents
  • 0 in reply to Robert  

    Yes, I also tried that.
    The flash erase returns ok (Full Chip Erase Done), but then if I try to Download or to start the debugger I get the usual error (Error: Flash Download failed - "Cortex-M3"), both with blinky project any my.
    I included the option key programming file and its algorithm in my project and then selected Erase Sectors instead of Erase Full Chip as stated in
    infocenter.arm.com/.../index.jsp
    It seems to works!
    Thanks a lot!

Reply
  • 0 in reply to Robert  

    Yes, I also tried that.
    The flash erase returns ok (Full Chip Erase Done), but then if I try to Download or to start the debugger I get the usual error (Error: Flash Download failed - "Cortex-M3"), both with blinky project any my.
    I included the option key programming file and its algorithm in my project and then selected Erase Sectors instead of Erase Full Chip as stated in
    infocenter.arm.com/.../index.jsp
    It seems to works!
    Thanks a lot!

Children
No data