From DallasTemperature.cpp:
// Fetch temperature for device index
float DallasTemperature::getTempCByIndex(uint8_t deviceIndex){DeviceAddress deviceAddress;
if (!getAddress(deviceAddress, deviceIndex)){
return DEVICE_DISCONNECTED_C;
}return getTempC((uint8_t*)deviceAddress);
}
If -127 is returned, set temp for that channel to 0 and continue.