F103 USB CDC won't build with Sloeber

[cdrose]

STM32F103C8T6 BluePill
Eclipse with Sloeber plugin
Arduino Core STM32 1.5.0 latest
Windows 10

I'm getting a string of errors if I try to include USB CDC into my project. It looks a bit like there's a missing #define and then a bunch of other macros don't expand properly, but I don't know enough about how this is all meant to work to spot the problem. I see from other comments people are using CDC so it must have been working before, or my build environment isn't set up correctly.

Any ideas?

In file included from C:\eclipse\arduinoPlugin\packages\STM32\hardware\stm32\1.5.0\cores\arduino\stm32\usb\usbd_desc.c:23:0:
C:\eclipse\arduinoPlugin\packages\STM32\hardware\stm32\1.5.0\cores\arduino\stm32\usb\usbd_desc.c: In function 'USBD_CDC_ProductStrDescriptor':
:0:13: error: 'BLUEPILL_F103C8' undeclared (first use in this function)
C:\eclipse\arduinoPlugin\packages\STM32\hardware\stm32\1.5.0\cores\arduino/utils.h:7:26: note: in definition of macro 'CONCATS'
#define CONCATS(s1, s2) (s1" " s2)
^~
C:\eclipse\arduinoPlugin\packages\STM32\hardware\stm32\1.5.0\cores\arduino\stm32\usb\usbd_desc.c:53:51: note: in expansion of macro 'USB_PRODUCT'
#define USBD_CDC_PRODUCT_HS_STRING CONCATS(USB_PRODUCT, "CDC in HS Mode")
^~~~~~~~~~~
C:\eclipse\arduinoPlugin\packages\STM32\hardware\stm32\1.5.0\cores\arduino\stm32\usb\usbd_desc.c:230:31: note: in expansion of macro 'USBD_CDC_PRODUCT_HS_STRING'
USBD_GetString((uint8_t *)USBD_CDC_PRODUCT_HS_STRING, USBD_StrDesc, length);
^~~~~~~~~~~~~~~~~~~~~~~~~~

eclipse errors.txt

[fpistm]

Hi @cdrose
right some people already raised this issue.
I never met him.
Anyway, with Arduino IDE (on Windows and Linux), USB_PRODUCT is well defined:
"-DUSB_PRODUCT=\"BLUEPILL_F103C8\""
With Eclipse + Sloeber on Linux, it works also:
'-DUSB_PRODUCT="BLUEPILL_F103C8"'

I could not test under windows as I get a proxy issue to install Sloeber.
Anyway on you log we see that:
"-DUSB_PRODUCT="BLUEPILL_F103C8""

This is why you get this error. Don't know how Sloeber parse the platform.txt but it is linked to that. I advise you to submit an issue on Sloeber.
In platform.txt this is how it is defined:
'-DUSB_PRODUCT="{build.board}"'

Arduino_Core_STM32/platform.txt

Line 70 in 9299ab2

build.usb_flags=-DUSBCON {build.usb_speed} -DUSBD_VID={build.vid} '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT="{build.board}"' -DHAL_PCD_MODULE_ENABLED

One workaround could be to edit the properties of your project, then go to "C/C++ Build" -> "Environment" and search "A.BUILD.USB_FLAGS"
Then you can edit it to fix the USB_PRODUCT definition with Sloeber.
On Linux I get:
-DUSBCON ${A.BUILD.USB_SPEED} -DUSBD_VID=${A.BUILD.VID} '-DUSB_MANUFACTURER=${A.BUILD.USB_MANUFACTURER}' '-DUSB_PRODUCT="${A.BUILD.BOARD}"' -DHAL_PCD_MODULE_ENABLED

[fpistm]

Any feedback ?

[cdrose]

Sorry haven't been able to look into this further yet. Ill see if anyone has mentioned it on the Sloeber page. Hopefully I have some time to work on it early next week.

[cdrose]

It looks like this has been raised previously with Sloeber and the fix is non-trivial:
Sloeber/arduino-eclipse-plugin#1047 (comment)

[fpistm]

Thanks @cdrose
I close this one as linked to how Sloeber handle/parse the platform.txt.