The library is not working, please correct.

[fermiums]

Bluepill STM32F103C8T6 generic_boot20_pc13

1. Doesn't find the required library by the eXoCAN keyword, you have to download a zip archive from GitHub
2. Used variables u_int32_t that do not work in the repository
   http://dan.drown.org/stm32duino/package_STM32duino_index.json
   they work in the slow and fat library at the link
   https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json
   the same thing with the bpCanBlink.ino example, digitalToggle () does not work in it
   Solution: replace 12 variables with uint32_t, use digitalToggle -> static void instead
3. Immediately upon the declaration of the can class, the processor goes into idle state. Problem in recursive begin declaration. file eXoCAN.h dates 150, 151 I commented out them.
4. I don't know if it can be so correct, but 2 identical names are used in the same begin class with different functionality, which I also corrected for begin1
5. Init passes only in the case of PORTB_8_9, but in both cases serial falls off due to the clock initialization lines, eXoCAN.cpp lines 82-92, yes, I understand that USB on PA 11 and 12 legs, but the controller completely freezes if they are assigned in the eXoCAN library ...
6. After all these fixes, I managed to send one message using the can.transmit () command, after which the unused PC13 output (LED) turned on and the controller continued to work in loop () without sending it to transmit and Serial not working.

There is no debugging on this Arduino software, so I was very disappointed that I could not start CAN with the USB library. Now I have to use Cub for my task, but so far I have not come up with a beautiful solution with a bootloader.

[exothink]

I don't understand why you are having so many issues. Several others are using the library without issue. Using 'begin' with different signatures is standard C++.

The STM32F103C8T6 hardware does not support USB and CAN at the same time.

I use VS Code and the PlatformIO plugin and everything works fine.

[dartrax]

Bluepill STM32F103C8T6 generic_boot20_pc13

1. Doesn't find the required library by the eXoCAN keyword, you have to download a zip archive from GitHub

Valid, same as #15

2. Used variables u_int32_t that do not work in the repository
   http://dan.drown.org/stm32duino/package_STM32duino_index.json
   they work in the slow and fat library at the link
   https://github.com/stm32duino/BoardManagerFiles/raw/main/package_stmicroelectronics_index.json
   the same thing with the bpCanBlink.ino example, digitalToggle () does not work in it
   Solution: replace 12 variables with uint32_t, use digitalToggle -> static void instead

Correct, thanks for the solution.

3. Immediately upon the declaration of the can class, the processor goes into idle state. Problem in recursive begin declaration. file eXoCAN.h dates 150, 151 I commented out them.

Invalid, that's no problem, see below

4. I don't know if it can be so correct, but 2 identical names are used in the same begin class with different functionality, which I also corrected for begin1

Invalid: As @exothink said correctly, using 'begin' with different signatures is standard C++.

5. Init passes only in the case of PORTB_8_9, but in both cases serial falls off due to the clock initialization lines, eXoCAN.cpp lines 82-92, yes, I understand that USB on PA 11 and 12 legs, but the controller completely freezes if they are assigned in the eXoCAN library ...

Yes, it got stuck in Line 85/86 here, too. But then I found out that my bluepill is a clone without CAN functionality...

6. After all these fixes, I managed to send one message using the can.transmit () command, after which the unused PC13 output (LED) turned on and the controller continued to work in loop () without sending it to transmit and Serial not working.

There is no debugging on this Arduino software, so I was very disappointed that I could not start CAN with the USB library. Now I have to use Cub for my task, but so far I have not come up with a beautiful solution with a bootloader.