after pin set PTC2-rxd,PTC3-txd,and lin stack --LIn_cfg set,

and code blow:
l_sys_init();
l_ifc_init(LI0);
lin_trcv_init();
l_ifc_wake_up(LI0);
l_sys_irq_restore(LI0);
ld_init(LI0);
the question is I can not enter rx interrupt! why ? please help me to point the error,thank you。