hi Zoltan, Just a quick note it seems the version/sha of Mbed OS you're using doesn't work out of the box with Mbed Studio (1.0) - it can't detect the Bluepill custom target. After importing the application and upgrading to Mbed OS 6.0.0 (165be79392ae7b1bee4388d2bc8ed8281978f07c), then I can select the Bluepill and compile just fine. You may want to update the mbed-os.lib file. Thanks, Marcelo

Hello Marcelo, Thank you for the feedback. I have rebuilt the program with the mbed-os.lib rev. 165be79392. Best regards, Zoltan

Traceback (most recent call last):
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 151, in target
resolution_order = get_resolution_order(json_data, name, [])
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 139, in get_resolution_order
order = get_resolution_order(json_data, par, order, level + 1)
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 137, in get_resolution_order
parents = json_data[target_name].get("inherits", [])
KeyError: 'MCU_STM32F103x8'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "c:\mbed-os-bluepill/mbed-os/tools/make.py", line 421, in <module>
main()
File "c:\mbed-os-bluepill/mbed-os/tools/make.py", line 311, in main
mcu = extract_mcus(parser, options)[0]
File "c:\mbed-os-bluepill\mbed-os\tools\options.py", line 145, in extract_mcus
update_target_data()
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 782, in update_target_data
in Target.get_json_target_data().items()
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 783, in <listcomp>
if obj.get("public", True)]
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 107, in wrapper
CACHES[(func.__name__, args)] = func(*args, **kwargs)
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 362, in get_target
return target(target_name, Target.get_json_target_data())
File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 155, in target
), exc)
File "c:\ProgramData\Mbed Studio\mbed-studio-tools\python\lib\site-packages\future\utils\__init__.py", line 403, in raise_from
exec(execstr, myglobals, mylocals)
File "<string>", line 1, in <module>
tools.utils.NotSupportedException: target BLUEPILL has an incomplete target definition

This does not appear to work anymore with the latest Mbed Studio (1.4.5). After importing into Mbed Studio and clicking build, I get the following errors: <<code>> Traceback (most recent call last): File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 151, in target resolution_order = get_resolution_order(json_data, name, []) File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 139, in get_resolution_order order = get_resolution_order(json_data, par, order, level + 1) File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 137, in get_resolution_order parents = json_data[target_name].get("inherits", []) KeyError: 'MCU_STM32F103x8' The above exception was the direct cause of the following exception: Traceback (most recent call last): File "c:\mbed-os-bluepill/mbed-os/tools/make.py", line 421, in <module> main() File "c:\mbed-os-bluepill/mbed-os/tools/make.py", line 311, in main mcu = extract_mcus(parser, options)[0] File "c:\mbed-os-bluepill\mbed-os\tools\options.py", line 145, in extract_mcus update_target_data() File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 782, in update_target_data in Target.get_json_target_data().items() File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 783, in <listcomp> if obj.get("public", True)] File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 107, in wrapper CACHES[(func.__name__, args)] = func(*args, **kwargs) File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 362, in get_target return target(target_name, Target.get_json_target_data()) File "c:\mbed-os-bluepill\mbed-os\tools\targets\__init__.py", line 155, in target ), exc) File "c:\ProgramData\Mbed Studio\mbed-studio-tools\python\lib\site-packages\future\utils\__init__.py", line 403, in raise_from exec(execstr, myglobals, mylocals) File "<string>", line 1, in <module> tools.utils.NotSupportedException: target BLUEPILL has an incomplete target definition <</code>>