dstacer on React - No Data Check

Thanks for all of the suggestions. I have it working as desired.

The problem to solve was "Notify me once a day if you don't see any data for more than an hour"  This is designed to keep bugging me if there is a long term outage if my IOT device stops sending data.

I use a time control to run the code once an hour.

Here is my code:

NotifyInterval = minutes(1440)  %Interval in minutes to send a notification, set to once a day

%get the current date time
CurrentTime = datetime('now','TimeZone','America/New_York')      % use your TimeZone What time is it "right now" (local) when running this

%tinterval - calculated desired outage time interval
DataLossInterval = CurrentTime - hours(1)     % here 1 hour without data

%Read the last data from channel
[Data,LastTimeData] = thingSpeakRead(124xxxx , 'fields', [1]);   
LastTimeData    % to see the time of your last recorded point
nodata = LastTimeData < DataLossInterval

if nodata
    % Its past when we expected data so we need to notify but only want to notify every x hours
    'no data'
    %Read the last time we notified from a private channel
    [Data,LastNotify] = thingSpeakRead(145xxxx ,'ReadKey','xxxxxxx', 'fields', [1]);   
    LastNotify   % to see the time of your last recorded point you can erase this line
    notify = CurrentTime - LastNotify
    if notify > NotifyInterval
        ' time to notify'
        thingSpeakWrite(145xxx ,1,'WriteKey','xxxxxxxx'); % write a new entry to the last notified channel
        %Do what ever you want here to notify here,  I post to a slack channel that notifies my phone
        dd = ['No Data Received since: ' datestr(LastTimeData)]
        response = webwrite('https://xxxxxgroup.slack.com/services/hooks/slackbot?token=xxxxxxxxxxxxxxxxxxx&channel=%23channeame',dd)
    end
end