but the arduin does not seam to be able to talk with my gateway ...

first i tought it was an issue with the radio but i try the same thing on another sensor i made 3 mounth ago and it was fine ...

I compile the code with the 2.1.1 library because 2.0 gave me some error ... is it possible that why it can talk to the gateway ?

I don't want to update my gateway is it possible to compile it with 2.0 library ?

this is the error i got in 2.0

Arduino:1.8.3 (Windows 10), Carte : "Arduino Pro or Pro Mini, ATmega328 (3.3V, 8 MHz)"

C:\Users\dbonneau\Documents\Arduino\libraries\DallasTemperature\examples\DallasTemperatureSensor\DallasTemperatureSensor.ino: In function 'void loop()':

DallasTemperatureSensor:94: error: 'getControllerConfig' was not declared in this scope

     float temperature = static_cast<float>(static_cast<int>((getControllerConfig().isMetric?sensors.getTempCByIndex(i):sensors.getTempFByIndex(i)) * 10.)) / 10.;

                                                                                  ^

exit status 1
'getControllerConfig' was not declared in this scope

and this is the log on 2.1.1

10033 TSM:FAIL:RE-INIT
10035 TSM:INIT
10041 !TSM:INIT:TSP FAIL
10043 TSM:FAIL:CNT=2
10047 TSM:FAIL:PDT
20051 TSM:FAIL:RE-INIT
20054 TSM:INIT
20060 !TSM:INIT:TSP FAIL
20062 TSM:FAIL:CNT=3
20066 TSM:FAIL:PDT
30070 TSM:FAIL:RE-INIT
30072 TSM:INIT
30078 !TSM:INIT:TSP FAIL
30083 TSM:FAIL:CNT=4
30085 TSM:FAIL:PDT
40089 TSM:FAIL:RE-INIT
40091 TSM:INIT
40097 !TSM:INIT:TSP FAIL
40099 TSM:FAIL:CNT=5
40103 TSM:FAIL:PDT