Flashing new firmware example fails (CMD_GETID)

Participant

I raised this a while back in the forum and have had not been able to fix the issue and would really like to get to the bottom of this. I have purchased the full book, which I realise doesn’t give me online tech support, but someone must know the answer?

I have successfully got the boot-loader (22.3 Developing a Custom Bootloader) example compiled and producing a .hex file (the binary also appears to run ok regarding if an app is present or not).

For some reason when I come to upgrade my app code via the flasher.py script, it fails with the below message.

C:\Users\me\Desktop\Project\Debug>python flasher.py com3 project.hex
Traceback (most recent call last):
File “flasher.py”, line 181, in <module>
id = flasher.getID()
File “flasher.py”, line 93, in getID
raise ProgramModeError(“CMD_GETID failed”)
__main__.ProgramModeError: CMD_GETID failed

If I debug the boot-loader it appears to accept the GETID command and tries to send an ACK back.

I have currently just commented out the offending code but this isn’t really a fix.

I have tried on both Windows and Linux boxes with no success

Any ideas?

Boondoggler

aungtunlinn1992

Participant

Hi,
I would like to know where I can get the flasher.py file? I cannot find the script in the Mastering STM32 book.
I am interested in using an encrypted custom bootloader in one of my projects.
Could you please tell me about where do you get this script?