diff --git a/src/grovelinefinder/grovelinefinder.cxx b/src/grovelinefinder/grovelinefinder.cxx index 93316bb9..297f526a 100644 --- a/src/grovelinefinder/grovelinefinder.cxx +++ b/src/grovelinefinder/grovelinefinder.cxx @@ -23,6 +23,8 @@ */ #include +#include +#include #include "grovelinefinder.h" @@ -33,7 +35,8 @@ GroveLineFinder::GroveLineFinder(int pin) { if ( !(m_gpio = mraa_gpio_init(pin)) ) { - cerr << __FUNCTION__ << ": mraa_gpio_init() failed" << endl; + throw std::invalid_argument(std::string(__FUNCTION__) + + ": mraa_gpio_init() failed, invalid pin?"); return; }