Timmmm
commented
3 years ago Ah I decided to try updating the firmware on the DipDap (instructions below for random travellers since it's super confusing). I get a bit further but now it can't erase the chip.
C:\Users\Tim>pyocd list
# Probe Unique ID
------------------------------------------------------------------------
0 ARM CMSIS-DAP 7401000004a22ae300000000000000000000000097969902
C:\Users\Tim>pyocd flash "Downloads\0244_k20dx_bl_0x8000.bin" -t k20d50m
0003111:WARNING:target_kinetis:K20D50M in secure state: will try to unlock via mass erase
0014064:ERROR:target_kinetis:Mass erase timeout waiting for Flash Mass Erase Ack to set
0014068:ERROR:target_kinetis:K20D50M: mass erase failed
0014073:CRITICAL:__main__:unable to unlock device
Traceback (most recent call last):
File "c:\python38\lib\site-packages\pyocd\__main__.py", line 402, in run
self._COMMANDS[self._args.cmd](self)
File "c:\python38\lib\site-packages\pyocd\__main__.py", line 572, in do_flash
with session:
File "c:\python38\lib\site-packages\pyocd\core\session.py", line 339, in __enter__
self.open()
File "c:\python38\lib\site-packages\pyocd\core\session.py", line 457, in open
self._board.init()
File "c:\python38\lib\site-packages\pyocd\board\board.py", line 85, in init
self.target.init()
File "c:\python38\lib\site-packages\pyocd\core\soc_target.py", line 117, in init
seq.invoke()
File "c:\python38\lib\site-packages\pyocd\utility\sequencer.py", line 213, in invoke
resultSequence.invoke()
File "c:\python38\lib\site-packages\pyocd\utility\sequencer.py", line 208, in invoke
resultSequence = call()
File "c:\python38\lib\site-packages\pyocd\target\family\target_kinetis.py", line 159, in check_flash_security
raise exceptions.TargetError("unable to unlock device")
pyocd.core.exceptions.TargetError: unable to unlock deviceI definitely haven't ever set any security bits.
DipDap update instructions.
- Go to here
- Download one of the prebuild images. It doesn't really matter which one! The name of the chip in the prebuilt images is just the target device that will be supported via the drag and drop interface, but for CMSIS-DAP/pyOCD it doesn't matter.
- Unplug the board, hold the button on it down, plug it back in again.
- Delete the
firmware.binon the CRP-DISABLED drive and copy the file you downloaded onto it. - Unplug it and plug it in again.
flit
I have a Dip Dap and I'm trying to use it to program the bootloader of a FRDM-K22F as described here.
I have connected the SWD IO, CLK and 3.3V/GND to the board, and install libusb-1.0. However some weird things happen. When I run
pyocd listit says:That is definitely wrong, but maybe it doesn't matter.
Then when I try to flash it:
Any idea why this is?