Android Question IOt Adafruit feed not working

Gino_VDS

Member
Licensed User
I have an ESP-32 device which measures and sends data to my Adafruit IO account every 10 minutes.
The temperature feed is regurarly saved in the key "temp_sleep". This works fine.

I would like to read this specific temperature feed. My code is based on https://www.b4x.com/android/forum/t...-the-home-temperature-with-adafruit-io.80820/
The app connects fine to my Adadruit account, there are NO errors. But the temperature remains "0°".
I've added a screenshot of the Adafruit IO feeds.
Probably I mix up the feed in the code. I can't find the cause. Can somebody help me?

The relevant code:



Starter:
Private Sub AfterConnect
    mqtt.Subscribe($"${username}/f/temp-sleep"$, 0)
    UpdateState
End Sub

Sub mqtt_MessageArrived (Topic As String, Payload() As Byte)
    If Topic.EndsWith("/temp-sleep") Then
        Dim temp As String = BytesToString(Payload, 0, Payload.Length, "ascii")
        temperature = temp
        UpdateState
    End If
End Sub
B4X:

Main:
Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private lblTemperature As Label
    Private lblState As Label
End Sub

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("1")
 
End Sub

Public Sub SetState
    If Starter.mqtt.Connected Then
        lblState.Text = "Connected"
        lblTemperature.Text = $"Temperature: $1.1{Starter.temperature} °"$
    Else
        lblState.Text = "Disconnected"
        lblTemperature.Text = "Temperature: N/A"
    End If
 
End Sub
 

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