pfff ... I am such a dummy sometime ... my code was false :
#if defined TARGET_ARDUINO
GIMSK = 0b00100000; // PCIE on
PCMSK = 0b00000011; // mask pour le pcint0 et pcint1
#endif
#if defined TARGET_ARDUINO
PCICR = 0x02; // Enable PCINT1 interrupt
PCMSK1 = 0b00000111;
#endif
if I use twice ARDUINO there is nothing for LILY ....
thanks for your help, sorry to have had you loose your time !!