@Yveaux no buddy I used the last update of your repository, my question is , are you aware that your esp8266 sample sketch call library that wont work with esp architecture? I've compare last update with previous library and I've find the for couple of header file following code has been added
#ifdef AVR
#include <avr/interrupt.h>
#else
#error MsTimer2 library only works on AVR architecture
#endif
and I was wondering why your sample sketch call such file into the compiling