Adjusting Temperature


Needing some help again. My last post was about the Nest binding but could not really able to make it to work on my end. Instead I used the HTTP binding and polling that made the NEST integration working.

What help I need this time is I want to be able to adjust the Target Temperature setting on my Nest thermostat.

I tried the Setpoint but I am kind of lost on how to configure it. I searched for some examples and tried it but it does not work for me. My syntax most probably are wrong.

Here is my sitemap

	Group item=NEST  label="Nest" icon="homey" {
		Frame label="Nest Thermostat E" {
			Text item=Hvac_mode label="HVAC Mode" valuecolor=[cool="blue", heat="orange", heat-cool="brown", eco="green", off="red"] icon="nest_e" 
			Text item=Hvac_State label="HVAC State" valuecolor=[off="red", cooling="blue", heating="orange"] icon="nest_e"
			Setpoint item=Target_Temp label="Target Temperature" minValue=9 maxValue=32 step=0.5  icon="nest_e" 
			Text item=Ambient_Temp label="Ambient Temperature" valuecolor=[>23="red", <=23="blue"] icon="nest_e" 			
			Text item=Therm_Hum label="Humidity" valuecolor=[<=30="red",<=49="green",>49="brown"] icon="nest_e"
			Text item=Home_Away label="Home-Away Status" valuecolor=[home="green", away="blue"] icon="nest_e"	
		Frame label="Nest CO2+Smoke" {
			Text item=Smoke_UI_Color label="CO2+Smoke UI Color" valuecolor=[gray="gray", green="green", yellow="yellow", red="red"] icon="nest_protect"
			Text item=Smoke_Battery_Low label="Battery" valuecolor=[ok="green", replace="red"] icon="nest_protect"
			Text item=Smoke_CO_Alarm label="CO2 Alarm" valuecolor=[ok="green"] icon="nest_protect"
			Text item=Smoke_Smoke_Alarm label="Smoke Alarm" valuecolor=[ok="green"] icon="nest_protect"				

And here’s my .items

Group NEST (nest_product)
// ITEMS Thermostat
String nestE_NetCon      "Thermostat Connected [MAP(]"  <thermostat>         	{ http="<[nest:60000:JS(GetThermConValue.js)]" }
String Hvac_mode   "HVAC Mode [MAP(]"      { http="<[nest:60000:JS(GetHvacModeValue.js)]" } 
Number Target_Temp      "Temperature [%.1f °C]"            { http="<[nest:60000:JS(GetTargetTempValue.js)]" }
Number Ambient_Temp "Ambient Temperature  [%.1f °C]"											{ http="<[nest:60000:JS(GetNestValue.js)]" }
Number Therm_Hum "Humidity  [%.1f %%]"			{ http="<[nest:60000:JS(GetNestTherValue.js)]" }
String Hvac_State "HVAC State [MAP(]"			

I was searching for topics about setting temperature and found this thread where I followed the rule.

Here’s the .rule

rule "Set Target Temperature SetPoint"
        Item Target_Temp received command
        output = sendHttpPutRequest("", "application/json", "Bearerc.FC1Rrhw16udbUpcOxihuBUDtZ0PXXXXXXXXXXXX",  '{"target_temperature_c":' + receivedCommand + '}')
        logInfo("HVAC","HVAC Command sent - output: "+output)


But I am getting this error log. Please let me know what causing the error and how to correct it.

Appreciate your help. Thanks.

2018-08-07 18:18:13.385 [ERROR] [ntime.internal.engine.RuleEngineImpl] - Rule 'Set Target Temperature SetPoint': An error occurred during the script execution: Could not invoke method: org.eclipse.smarthome.model.script.actions.HTTP.sendHttpPutRequest(java.lang.String,java.lang.String,java.lang.String,int) on instance: nul

Thanks again.