Build error with Firmata

[fpistm]

Since the clean of header files including Firmata do not build.
Still one issue with multiple inclusions with pins_arduino.h.

/local/data/work/stm32/stm32duino/arduino-1.8.4/portable/sketchbook/libraries/Firmata/Boards.h:790:72: error: 'pinIsSerial' was not declared in this scope
 #define IS_PIN_DIGITAL(p)       (digitalPinIsValid(p) && !pinIsSerial(p))

Fixed on going.

[fpistm]

Fixed in #128

[xzsfd2457]

I am facing a problem while using Softserial header file for STM32F401RE microcontroller, then it tells the Softserial directory is not available.

[fpistm]

Hi @xzsfd2457,
Please open a new issue and describe your issue.
environment (host OS, Arduino IDE version, core version,...), sketch,...
Thanks in advance.

Note: if your issue is to use the SoftwareSerial library, then a request to have one compatible is already open: #267