Compilation error due to missing DRV_BRAKE_PIN even when TMC4671 driver is commented out

[OrhanYigitDurmaz]

I am working on creating a new target for the f405rgt6, but I don’t have enough pins. As a result, I am cutting off unnecessary components, such as PWM, UART, SPI, and the TMC4671 driver. However, when I try to compile, I encounter the following error:

error: 'DRV_BRAKE_PIN' is not defined

This happens because, even though the TMC4671 driver is commented out, the build process is still looking for the DRV_BRAKE_PIN, which I haven’t defined. The VoltageSense.cpp file should only be compiled when the TMC4671 driver is defined, but it seems that it is being compiled regardless of this condition.

Steps to Reproduce:

Comment out the TMC4671 driver in the target configuration that doesnt have DRV_BRAKE_PIN defined. Attempt to compile the project. Observe the compilation error regarding the missing DRV_BRAKE_PIN.

Expected Behavior:

The build process should not look for DRV_BRAKE_PIN when the TMC4671 driver is disabled. The VoltageSense.cpp should only be compiled when TMC4671 is defined.

Possible Solution:

Add conditional compilation to VoltageSense.cpp so that it only compiles when the TMC4671 driver is defined. Alternatively, ensure that any dependencies on DRV_BRAKE_PIN are wrapped in preprocessor conditionals based on the TMC4671 definition.