PPB_PERIPHERAL_IDLE
ppb_1284_set_state(bus, PPB_PERIPHERAL_IDLE);
ppb_1284_set_state(bus, PPB_PERIPHERAL_IDLE);
case PPB_PERIPHERAL_IDLE:
case PPB_PERIPHERAL_IDLE:
while (ppb_1284_get_state(ppbus) != PPB_PERIPHERAL_IDLE) {