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我是编程新手，正在重写我的自动啤酒厂的代码，以从模拟温度传感转移到单线。

然而，我正在努力获得任何快乐，有人可以为我运行这段代码并提供建议吗？目的是让 HLT_currenttemp 读取 hltaddress 处 DS18B20 传感器的当前温度。

 Dim owd As com.dalsemi.onewire.container.OneWireContainer
    Dim state As Object
    Dim tc As com.dalsemi.onewire.container.TemperatureContainer
    ' Try
    ' get exclusive use of 1-Wire network
    adapter.beginExclusive(True)
    ' clear any previous search restrictions
    adapter.setSearchAllDevices()
    adapter.targetAllFamilies()
    adapter.setSpeed(com.dalsemi.onewire.adapter.DSPortAdapter.SPEED_REGULAR)
    owd = CreateObject("OWAPI.OneWireContainer28")
    ' retrieve OneWireContainer
    owd.setupContainer(adapter, hltaddress)

    ' cast the OneWireContainer to TemperatureContainer
    tc = DirectCast(owd, com.dalsemi.onewire.container.TemperatureContainer)
    ' read the device
    state = tc.readDevice
    ' extract the temperature from previous read
    tc.doTemperatureConvert(state)
    ' retrieve Temp
    HLT_Currentemp = (Math.Round(tc.getTemperature(state), 2))

    Debug.WriteLine(tc.getTemperature(state))
    ' end exclusive use of 1-Wire net adapter
    adapter.endExclusive()
    'Catch ex As Exception
        Debug.WriteLine(hltaddress)
        ' End Try

问候

史蒂夫

4

1 回答 1

0

终于想通了！

' retrieve OneWireContainer
        owd = adapter.getDeviceContainer(hltaddress)
        ' cast the OneWireContainer to TemperatureContainer
        tc = DirectCast(owd, com.dalsemi.onewire.container.TemperatureContainer)
        ' read the device
        state = tc.readDevice
        ' extract the temperature from previous read
        tc.doTemperatureConvert(state)
        ' retrieve Temp
        HLT_Currentemp = (Math.Round(tc.getTemperature(state), 3))
于 2013-10-07T12:30:36.800 回答