/* See if a cached location is accurate -- called with "Known Bus" set */
INDEX_OR_ERROR ReCheckPresence(struct parsedname *pn)
{
INDEX_OR_ERROR bus_nr;
if (NotRealDir(pn)) {
return INDEX_DEFAULT;
}
if ((pn->selected_device == DeviceSimultaneous)
|| (pn->selected_device == DeviceThermostat)) {
return INDEX_DEFAULT;
}
if (KnownBus(pn)) {
if ( INDEX_VALID( CheckThisConnection(pn->known_bus->index,pn) ) ) {
return pn->known_bus->index ;
}
}
if ( GOOD( Cache_Get_Device(&bus_nr, pn)) ) {
LEVEL_DEBUG("Found device on bus %d",bus_nr);
if ( INDEX_VALID( CheckThisConnection(bus_nr,pn) ) ) {
SetKnownBus(bus_nr, pn);
return bus_nr ;
}
}
UnsetKnownBus(pn);
Cache_Del_Device(pn) ;
return CheckPresence(pn);
}
/* Device is known with serial number */
static enum parse_enum Parse_RealDeviceSN(enum parse_pass remote_status, struct parsedname *pn)
{
/* Search for known 1-wire device -- keyed to device name (family code in HEX) */
pn->selected_device = FS_devicefindhex(pn->sn[0], pn);
// returning from owserver -- don't need to check presence (it's implied)
if (remote_status == parse_pass_post_remote) {
return parse_prop;
}
if (Globals.one_device) {
// Single slave device -- use faster routines
SetKnownBus(INDEX_DEFAULT, pn);
} else {
/* Check the presence, and cache the proper bus number for better performance */
INDEX_OR_ERROR bus_nr = CheckPresence(pn);
if ( INDEX_NOT_VALID(bus_nr) ) {
return parse_error; /* CheckPresence failed */
}
}
return parse_prop;
}
