Arduino for STM32

The only difference among these bin files is the pin definition of the on-board LED used by the HID bootloader to indicate its status.
If you don't care about the status indicator, you can use any of these bin files.

how can I get one that's designed for the board with the LED on pin PB2?
The ...

In general, HID bootloader uses the USB Serial port (CDC) to put the STM32 in HID bootloader mode. If you burn the STM32 with a sketch file that the USB Serial is not enabled from Arduino IDE menu, then the hid-flash.exe cannot reboot the STM32 in HID bootloader mode.

Is your MCU the STM32F103C8T6 (64 kB Flash, 20 kB RAM) ?
Some Bluepills are marketed with STM32F103C6 and only have 32kB Flash and 10kB RAM.

Wishing you a New Year with full of great achievements and experiences !

...
I want to adapt my library to work with two different boards, so how do i define something on my main code that runs different parts of my library?

Maybe you can pass your board type as a parameter to your library constructor.

todayLib.h

...

void begin(uint8_t myboard = 1); /* By ...

An alternative way to connect the RS-485 transceiver is as follows, where the DE/RE pins are not used in the known way.
Source: https://www.waveshare.com/w/upload/1/1d ... ematic.pdf

An easy way to do that is to modify only the boards.txt file by adding the following 2 lines:

# DISCO_F407VG board
Disco.menu.pnum.DISCO_F407VG=STM32F407G-DISC1
Disco.menu.pnum.DISCO_F407VG.node=DIS_F407VG
Disco.menu.pnum.DISCO_F407VG.upload.maximum_size=1048576
Disco.menu.pnum.DISCO_F407VG.upload ...

The only problem I had with setting up xpack-openocd-0.12.0-1 (Core 2.4.0, Win10 and Linux Mint 20.2, IDE 2.0.3) was that I was getting the following error when trying to click the debug button:

Failed to launch OpenOCD GDB Server: Error: spawn C:\Users\<USER>\AppData\Local\Arduino15\packages ...

@fpiSTM I am confused. I really don't know what you are trying to do. Can you please explain your thoughts?

PR was sent

https://github.com/stm32duino/Arduino_C ... /pull/1952
I have added the STM32F103 (Bluepill) to the debug support list

Of course, thanks to @luca_stm32, on the debug configuration !