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1. 

   dsoodak
   Member

   Following the instructions on http://leaflabs.com/docs/bootloader.html:

   C:\Python27\python.exe stm32loader.py -p COM5 -evw maple_RET6_boot.bin
   Bootloader version 22
   Chip id `['0x4', '0x10']'
   Write 256 bytes at 0x8000000
   Write 256 bytes at 0x8000100
   Read 256 bytes at 0x8000000
   Read 256 bytes at 0x8000100
   Verification OK

   For some reason it only wrote 512 bytes of the file(I downloaded the pre-compiled binary from the website)...any idea what would cause this?

   I'm using WindowsXP, Python 2.7, py-serial 2.6, and have the Maple Rev5 board.

   Posted 3 years ago #
2. 

   dsoodak
   Member

   Update: The problem is that python refuses to read the whole file. Maybe because it was compiled in a linux environment so it thinks it sees EOF?

   I added "open(args[0], 'rb')" before
   "data = map(lambda c: ord(c), file(args[0]).read())",
   then tried
   "data = map(lambda c: ord(c), file(args[0]).read(os.path.getsize(args[0])))", but it is still only reading 486 bytes even though os.path.getsize() returns 15744 bytes.

   Posted 3 years ago #
3. 

   dsoodak
   Member

   Update: Evidently, the python "read" function, when implemented in Windows, interprets "0x1A" as EOF. I suppose the workaround is a more suitable question for a Python board, but I will post the results here in case anyone else tries to do this in Windows.

   Posted 3 years ago #
4. 

   dsoodak
   Member

   Update: This part of the problem is now solved. Make the following change to run the Python bootloader loading script to make it read the entire binary in Windows:

   data = map(lambda c: ord(c), file(args[0]).read())
   ->
   f=open(args[0], mode='rb')
   data = map(lambda c: ord(c), f.read())

   in DOS, this input
   C:\Python27\python.exe stm32loader.py -p COM5 -evw maple_RET6_boot.bin
   Produced the following output(some parts skipped):
   Bootloader version 22
   Chip id `['0x4', '0x10']'
   Write 15744 bytes
   Write 256 bytes at 0x8000000
   ...
   Write 256 bytes at 0x8003D00
   ...
   Read 256 bytes at 0x8003D00
   Verification OK

   Still not actually working, though (usb not connecting to PC on reset like it used to before I started trying to reload the bootloader).

   Posted 3 years ago #
5. 

   StephenFromNYC
   Moderator

   @dsoodak-

   I do not code using Python, so this post may not help you solve your problem.

   In your first post you said you are using a Maple Rev 5 board.

   However, in your last post (see DOS prompt line) it appears you are using the RET6 board?

   Hope this helps.

   Posted 3 years ago #

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