Search code examples
arduinoreal-time-clock

Arduino error compiling

I am having a compiling error with my new code. I cannot find the anything wrong. I have searched google. Any help would be great. Please see below for the code and the error message.

Code: http://pastebin.com/cLprnCRz

Error Message: http://pastebin.com/azkc9QLY

Solution

  • well, your error is not in your code, it's in the file you're including sha1.h which is implementing a virtual method from Print.h but with the wrong return type:

    in sha1.h:

    virtual void Sha1Class::write(uint8_t)
        ^^^^

    in Print.h:

    virtual size_t Print::write(uint8_t)
        ^^^^^^

    your sha1 library is likely to have been written for a different version of the Arduino framework.

    The error is pretty clear, as it says:

    error: conflicting return type specified for 'virtual void Sha1Class::write(uint8_t)'
error:   overriding 'virtual size_t Print::write(uint8_t)'

    so the compiler is saying here:

    "You're defining in Print.h a method that has to be reimplemented of a given type, and when you're reimplementing it, you're giving it another type. I did my best, but really, I don't understand what you want!"