Question

我正在运行raspi Model B Rev 2 512MB，我安装了模块并成功打开了一个用于写入的引脚。成功地使LED闪烁。然后我尝试打开一个端口进行阅读，我得到了错误

{错误：EIO：i / o错误，写错误：-5，代码：＆＃39; EIO＆＃39;，系统调用：＆＃39;写＆＃39; }

这是代码的相关部分。

public partial class SuspiciousListManagementDialog : BaseForm, ISuspiciousListManagementView
{
    #region ISuspiciousListManagementView
    public ILinkPresentationView LinkPresentationView { get; set; }
    public event EventHandler SelectedTypeChanged;
    public event EventHandler SelectedHistoryTypeChanged;
    public event EventHandler SelectedShowOnlyActiveChanged;
    //public event EventHandler Loaded;

    protected virtual void OnSelectedShowOnlyActiveChanged()
    {
        var handler = SelectedShowOnlyActiveChanged;
        if (handler != null) handler(_showOnlyOneCheckBox.Checked, EventArgs.Empty);
    }

    protected virtual void OnSelectedTypeChanged()
    {
        var handler = SelectedTypeChanged;
        if (handler != null) handler(_listTypeComboBox.SelectedValue, EventArgs.Empty);
    }
    protected virtual void OnSelectedHistoryTypeChanged()
    {
        var handler = SelectedHistoryTypeChanged;
        if (handler != null) handler(_historyTypeComboBox.SelectedValue, EventArgs.Empty);
    }

    //protected virtual void OnLoaded()
    //{
    //    var handler = Loaded;
    //    if (handler != null) handler(this, EventArgs.Empty);
    //}

    public ICommand BrowseFileCommand { get; set; }
    public ICommand UploadCommand { get; set; }
    public ICommand RefreshCommand { get; set; }

    public new void ShowDialog(System.Windows.Forms.IWin32Window owner)
    {
        base.ShowDialog(owner);
        base.StartPosition = FormStartPosition.CenterParent;
    }
    public object AllTypesDataSource
    {
        get;
        set;
    }

    private SuspiciousListType _selectedType;


    public SuspiciousListType SelectedType
    {
        get;
        set;
    }

    private string _filePath;


    public string FilePath
    {
        get { return _filePath; }
        set
        {
            _filePath = value;
            _filePathTextBox.Text = value;
            ((DelegateCommand)UploadCommand).RaiseCanExecuteChanged();
        }
    }
    //it is possible. You can create a custom control that inherets from UserControl. Then, set the column type to Text and the EditType to Custom.

    //You then need to hook up onto the grids InitCustomEdit and EndCustomEdit events where you will perform the custom control logic.
    private object _historyDataGridSource;
    public object HistoryDataGridSource
    {
        get { return _historyDataGridSource; }
        set
        {
            _historyDataGridSource = value;

            _dataGrid.DataSource = value;
            _dataGrid.Refresh();
        }
    }

    public object AllHistoryAvailableTypesDataSource
    {
        get;
        set;
    }

    public SuspiciousFilteredListType SelectedHistoryType
    {
        get;
        set;
    }

    public bool ShowOnlyActive
    {
        get;
        set;
    }
    #endregion
    public SuspiciousListManagementDialog()
    {
        InitializeComponent();
        LinkPresentationView = new LinkPresentationView();
        //base.Load += (s, a) => OnLoaded();
        base.Load += OnLoad;
        base.Closed += OnSuspiciousListManagementDialogClosed;
        //_dataGrid.InitCustomEdit += _dataGrid_InitCustomEdit;
        //_dataGrid.EndCustomEdit += _dataGrid_EndCustomEdit;
    }

    private void grdCookies_InitCustomEdit(object sender, InitCustomEditEventArgs e)
    {
        //CheckedComboBox cmb = new CheckedComboBox();
        //cmb.VisualStyle = VisualStyle.Office2007;
        //cmb.ComboStyle = ComboStyle.DropDownList;
        //cmb.DropDownDataSource = e.Column.Key.Equals(CookiesConstants.COOKIE_HOST) ? _presenter.GetHosts() : _presenter.GetProtocols();
        //cmb.DropDownValueMember = CookiesConstants.COOKIE_KEY;
        //cmb.DropDownDisplayMember = CookiesConstants.COOKIE_KEY;
        //cmb.DropDownList.ColumnAutoResize = true;
        //cmb.RetrieveStructure();
        //cmb.UncheckAll();
        //if (e.Row.RowType == RowType.NewRecord && e.Value != null)
        //{
        //    cmb.Text = e.Value.ToString();
        //}
        //else
        //{
        //    if (e.Row.Cells[CookiesConstants.COOKIE_ID].Value != null)
        //        cmb.CheckedItems = _presenter.GetSelectedList((int)e.Row.Cells[CookiesConstants.COOKIE_ID].Value, e.Column.Key.Equals(CookiesConstants.COOKIE_HOST) ? CookiesPresentationPresenter.ListType.Hosts : CookiesPresentationPresenter.ListType.Protocols);
        //}
        //cmb.DropDownList.ColumnHeaders = InheritableBoolean.False;

        //if (e.Column.Key.Equals(CookiesConstants.COOKIE_HOST))
        //    cmb.Enabled = _presenter.IsHostsListEnabled(e.Row.Cells[CookiesConstants.COOKIE_PROTOCOL].Value);

        //e.EditControl = cmb;
    }

    private void grdCookies_EndCustomEdit(object sender, EndCustomEditEventArgs e)
    {
        //CheckedComboBox cmb = e.EditControl as CheckedComboBox;
        //if (cmb == null) return;

        //if (e.Column.Key.Equals(CookiesConstants.COOKIE_HOST))
        //{
        //    if (!(string.IsNullOrEmpty(cmb.Text) && e.Row.Cells[CookiesConstants.COOKIE_HOST].Value == null))
        //    {
        //        string cellValue = e.Row.Cells[CookiesConstants.COOKIE_HOST].Value == null
        //                               ? string.Empty : e.Row.Cells[CookiesConstants.COOKIE_HOST].Value.ToString().Replace(" ", "");

        //        if (!cellValue.Equals(cmb.Text.Replace(" ", "")))
        //        {

        //            e.Row.Cells[CookiesConstants.COOKIE_HOST].Value = cmb.Text;

        //        }
        //    }
        //}
        //else
        //{
        //    if (!(string.IsNullOrEmpty(cmb.Text) && e.Row.Cells[CookiesConstants.COOKIE_PROTOCOL].Value == null))
        //    {
        //        string cellValue = e.Row.Cells[CookiesConstants.COOKIE_PROTOCOL].Value == null
        //                               ? string.Empty : e.Row.Cells[CookiesConstants.COOKIE_PROTOCOL].Value.ToString().Replace(" ", "");

        //        if (!cellValue.Equals(cmb.Text.Replace(" ", "")))
        //        {

        //            e.Row.Cells[CookiesConstants.COOKIE_PROTOCOL].Value = cmb.Text;

        //            if (_presenter.IsHostsListEnabled(e.Row.Cells[CookiesConstants.COOKIE_PROTOCOL].Value) == false)
        //            {
        //                e.Row.Cells[CookiesConstants.COOKIE_HOST].Value = string.Empty;
        //            }

        //        }

        //    }

        //}


        //if (e.Row.Cells[CookiesConstants.COOKIE_ID].Value != null)
        //    _presenter.SetSelectedList((int)e.Row.Cells[CookiesConstants.COOKIE_ID].Value,
        //        cmb.CheckedItems,
        //        e.Column.Key.Equals(CookiesConstants.COOKIE_HOST) ? CookiesPresentationPresenter.ListType.Hosts : CookiesPresentationPresenter.ListType.Protocols);

    }


    void OnSuspiciousListManagementDialogClosed(object sender, EventArgs e)
    {
        this.FilePath = null;
        _listTypeComboBox.SelectedItemChanged -= (s, a) => OnSelectedTypeChanged();
        _historyTypeComboBox.SelectedItemChanged -= (s, a) => OnSelectedHistoryTypeChanged();
        _showOnlyOneCheckBox.CheckStateChanged -= (s, a) => OnSelectedShowOnlyActiveChanged();
        UploadCommand.CanExecuteChanged -= OnBrowseFileCommandCanExecuteChanged;
    }

    private void OnLoad(object sender, EventArgs e)
    {
        _listTypeComboBox.DataSource = AllTypesDataSource;
        _historyTypeComboBox.DataSource = AllHistoryAvailableTypesDataSource;

        _listTypeComboBox.SelectedItemChanged += (s, a) => OnSelectedTypeChanged();
        _historyTypeComboBox.SelectedItemChanged += (s, a) => OnSelectedHistoryTypeChanged();
        _showOnlyOneCheckBox.CheckStateChanged += (s, a) => OnSelectedShowOnlyActiveChanged();
        UploadCommand.CanExecuteChanged += OnBrowseFileCommandCanExecuteChanged;
        _uploadButton.Enabled = UploadCommand.CanExecute(this);
        _dataGrid.LoadingRow += _dataGrid_LoadingRow;

        _listTypeComboBox.SelectedIndex = 0;
        _historyTypeComboBox.SelectedIndex = 0;

    }

}

}）;

var gpio = require('rpi-gpio');
server.listen(8080, function() {
    console.log('Servidor corriendo en http://localhost:8080');

    gpio.setup(7, gpio.DIR_OUT, control);
    gpio.setup(22, gpio.DIR_IN, gpio.EDGE_BOTH, control);

这是我看到使用gpio readall的引脚分配，我想从GPIO6读取，因此我调用22（物理端口）我也尝试了25（BCM端口），结果相同。

任何线索??

Answer 1

问题是语法略有不同，如果你为边缘添加第三个参数就无法添加回调，改变这个：

gpio.setup(22, gpio.DIR_IN, gpio.EDGE_BOTH, control);

到这个

gpio.setup(22, gpio.DIR_IN, gpio.EDGE_BOTH);

解决了问题

Answer 2

PIN 6是接地，因此您无法使用它。您可以使用PIN 5进行输入。（PIN不是GPIO）

引脚图供参考：

使用rpi-gpio在raspi和nodejs上使用gpio

2 个答案: