Compile error on Micro:bit

[idreamsi]

Hi,
I use Arduino 1.8.11 and Micro:bit, at compile time (SoftwareSerialExample.ino), the following error is displayed, what is the problem?

C:\Users\Royal\Documents\Arduino\libraries\SoftwareSerial/SoftwareSerial.h:197:19: error: void value not ignored as it ought to be

          _intMask = attachInterrupt(_receivePin, handle_interrupt, RISING);

                   ^
C:\Users\Royal\Documents\Arduino\libraries\SoftwareSerial/SoftwareSerial.h:202:19: error: void value not ignored as it ought to be

          _intMask = attachInterrupt(_receivePin, handle_interrupt, FALLING);

                   ^
exit status 1
Error compiling for board BBC micro:bit.

[micooke]

The attachInterrupt() function from your board core is a void function, so try another board support package that returns an int from attachInterrupt()

[idreamsi]

Thanks,
Does this mean that Micro:bit is not supported? Unfortunately, I still could not solve the problem.

[micooke]

No, it's to do with whatever board support package you use.
If you are using Sandeeps BSP then it needs this sandeepmistry/arduino-nRF5#205
Yes, it's been there a while. The change you need is in WInterrupts.c. And FYI, it's not a hack - it changes the implementation of attachInterrupt() to be inline with the Arduino BSPs