debug("Fn case: 1,2,3,4(ready for switching layer)\n");
// ready for switching layer(case: 1,2,3,4)
new_layer = keymap_fn_layer(fn_bits);
debug("Fn case: 1,2,3,4(ready for switching layer)\n");
// ready for switching layer(case: 1,2,3,4)
new_layer = keymap_fn_layer(fn_bits);