IEP-1772 Show meaningful error message instead of invalid command name "program_esp_bins"

bundles/com.espressif.idf.core/src/com/espressif/idf/core/variable/JtagVariableResolver.java

@@ -67,6 +67,23 @@ private String generatePartOfConfigOptionsForVoltage()
 	}
 
 	private String generatePartOfConfigOptionsForBoard()
+	{
+		var result = new StringBuilder();
+		for (Object config : resolveBoardConfigFiles())
+		{
+			result.append(String.format("-f %s ", config)); //$NON-NLS-1$
+		}
+		return result.toString();
+	}
+
+	/**
+	 * Resolves the OpenOCD board configuration files for the active launch target. These config files register the
+	 * board-specific OpenOCD commands (e.g. {@code program_esp_bins}). An empty result means no usable board is
+	 * selected for the active target.
+	 *
+	 * @return the list of board config files, never {@code null}
+	 */
+	private List<String> resolveBoardConfigFiles()
 	{
 		var parser = new EspConfigParser();
 		ILaunchTarget activeILaunchTarget = getActiveLaunchTarget().orElseGet(() -> ILaunchTarget.NULL_TARGET);
@@ -76,17 +93,20 @@ private String generatePartOfConfigOptionsForBoard()
 		int idx = board.lastIndexOf(" [usb://"); //$NON-NLS-1$
 		String boardKey = (idx != -1) ? board.substring(0, idx) : board;
 		List<Board> boards = parser.getBoardsForTarget(targetName);
-		List<String> boardConfigs = boards.stream().filter(b -> b.name().equals(boardKey)).findFirst()
-				.map(Board::config_files).orElse(List.of());
-		var result = new StringBuilder();
-		if (boardConfigs != null)
-		{
-			for (Object config : boardConfigs)
-			{
-				result.append(String.format("-f %s ", config)); //$NON-NLS-1$
-			}
-		}
-		return result.toString();
+		return boards.stream().filter(b -> b.name().equals(boardKey)).findFirst().map(Board::config_files)
+				.orElse(List.of());
+	}
+
+	/**
+	 * Checks whether a board configuration is resolvable for the active launch target. When this returns
+	 * {@code false}, OpenOCD would start without a board configuration and board-specific commands such as
+	 * {@code program_esp_bins} would not be available, so the debug session cannot succeed.
+	 *
+	 * @return {@code true} if a board is selected and its OpenOCD config files were found, {@code false} otherwise
+	 */
+	public static boolean isBoardConfigResolvable()
+	{
+		return !new JtagVariableResolver().resolveBoardConfigFiles().isEmpty();
 	}
 
 }

bundles/com.espressif.idf.debug.gdbjtag.openocd/plugin.xml

@@ -174,6 +174,12 @@
           id="com.espressif.idf.debug.gdbjtag.openocd.openocdStatusHandler"
           plugin="com.espressif.idf.debug.gdbjtag.openocd">
     </statusHandler>
+    <statusHandler
+          class="com.espressif.idf.debug.gdbjtag.openocd.ui.BoardNotSelectedStatusHandler"
+          code="6001"
+          id="com.espressif.idf.debug.gdbjtag.openocd.boardNotSelectedStatusHandler"
+          plugin="com.espressif.idf.debug.gdbjtag.openocd">
+    </statusHandler>
  </extension>
  <extension
        point="org.eclipse.debug.ui.launchConfigurationTabs">

bundles/com.espressif.idf.debug.gdbjtag.openocd/src/com/espressif/idf/debug/gdbjtag/openocd/dsf/LaunchConfigurationDelegate.java

@@ -53,12 +53,14 @@
 import org.eclipse.debug.core.ILaunch;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchManager;
+import org.eclipse.debug.core.IStatusHandler;
 import org.eclipse.debug.core.model.ISourceLocator;
 import org.eclipse.embedcdt.core.StringUtils;
 import org.eclipse.embedcdt.debug.gdbjtag.core.DebugUtils;
 import org.eclipse.embedcdt.debug.gdbjtag.core.dsf.AbstractGnuMcuLaunchConfigurationDelegate;
 import org.eclipse.embedcdt.debug.gdbjtag.core.dsf.GnuMcuServerServicesLaunchSequence;
 
+import com.espressif.idf.core.variable.JtagVariableResolver;
 import com.espressif.idf.debug.gdbjtag.openocd.Activator;
 import com.espressif.idf.debug.gdbjtag.openocd.Configuration;
 import com.espressif.idf.debug.gdbjtag.openocd.ui.Messages;
@@ -79,6 +81,12 @@ public class LaunchConfigurationDelegate extends AbstractGnuMcuLaunchConfigurati
 	private final static String NON_STOP_FIRST_VERSION = "6.8.50"; //$NON-NLS-1$
 	private final int STATUS_DLL_NOT_FOUND = -1073741515;
 
+	/**
+	 * Status code used to route the "no board selected" failure through {@code BoardNotSelectedStatusHandler}. It must
+	 * match the {@code code} of the corresponding {@code statusHandler} extension in plugin.xml.
+	 */
+	public static final int BOARD_NOT_SELECTED_STATUS_CODE = 6001;
+
 	ILaunchConfiguration fConfig = null;
 	@SuppressWarnings("unused")
 	private boolean fIsNonStopSession = false;
@@ -736,12 +744,56 @@ protected IPath checkBinaryDetails(final ILaunchConfiguration config) throws Cor
 						new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Missing mandatory configuration. "
 								+ "Fill-in the 'Config options:' field in the Debugger tab.")); //$NON-NLS-1$
 			}
+
+			// Abort early with a clear, actionable message when no board is selected for the active target. Otherwise
+			// OpenOCD would start without a board configuration and fail later with the cryptic
+			// "invalid command name \"program_esp_bins\"" error.
+			if (!isBoardConfigured(config))
+			{
+				IStatus status = new Status(IStatus.OK, Activator.PLUGIN_ID, BOARD_NOT_SELECTED_STATUS_CODE,
+						"No board is selected for the debug target.", null); //$NON-NLS-1$
+				IStatusHandler handler = DebugPlugin.getDefault().getStatusHandler(status);
+				if (handler != null)
+				{
+					handler.handleStatus(status, null);
+				}
+				throw new DebugException(Status.OK_STATUS);
+			}
 		}
 
 		IPath path = super.checkBinaryDetails(config);
 		return path;
 	}
 
+	/**
+	 * Determines whether a board configuration is available for the given launch configuration. A board is considered
+	 * configured when it is resolvable from the active launch target, or when the (possibly manually edited) resolved
+	 * Config options already reference a board configuration file. Without either, OpenOCD would start without the
+	 * board-specific commands (e.g. {@code program_esp_bins}) and the debug session would fail.
+	 *
+	 * @param config the debug launch configuration
+	 * @return {@code true} if a board configuration is available, {@code false} otherwise
+	 */
+	private boolean isBoardConfigured(ILaunchConfiguration config)
+	{
+		if (JtagVariableResolver.isBoardConfigResolvable())
+		{
+			return true;
+		}
+
+		// Fall back to inspecting the resolved Config options for a manually configured board file.
+		try
+		{
+			String resolvedOptions = Configuration.resolveAll(Configuration.getGdbServerOtherConfig(config), config);
+			return resolvedOptions != null && resolvedOptions.contains("board/"); //$NON-NLS-1$
+		}
+		catch (CoreException e)
+		{
+			Activator.log(e);
+		}
+		return false;
+	}
+
 	/**
 	 * Get a custom launch sequence, that inserts a GDB server starter.
 	 */

bundles/com.espressif.idf.debug.gdbjtag.openocd/src/com/espressif/idf/debug/gdbjtag/openocd/ui/BoardNotSelectedStatusHandler.java

@@ -0,0 +1,60 @@
+/*******************************************************************************
+ * Copyright 2026 Espressif Systems (Shanghai) PTE LTD. All rights reserved.
+ * Use is subject to license terms.
+ *******************************************************************************/
+package com.espressif.idf.debug.gdbjtag.openocd.ui;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.debug.core.IStatusHandler;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.launchbar.core.ILaunchBarManager;
+import org.eclipse.launchbar.core.target.ILaunchTarget;
+import org.eclipse.launchbar.ui.target.ILaunchTargetUIManager;
+import org.eclipse.swt.widgets.Display;
+
+import com.espressif.idf.core.logging.Logger;
+import com.espressif.idf.debug.gdbjtag.openocd.Activator;
+
+/**
+ * Shows a clear, actionable dialog when a debug session is started without a board selected for the active launch
+ * target. Confirming the dialog opens the launch target editor so the user can select a board.
+ */
+public class BoardNotSelectedStatusHandler implements IStatusHandler
+{
+	@Override
+	public Object handleStatus(IStatus status, Object source) throws CoreException
+	{
+		Display.getDefault().asyncExec(() -> {
+			boolean isYes = MessageDialog.openConfirm(Display.getDefault().getActiveShell(),
+					Messages.BoardNotSelectedDialog_title, Messages.BoardNotSelectedDialog_message);
+			if (isYes)
+			{
+				editActiveLaunchTarget();
+			}
+		});
+		return null;
+	}
+
+	private void editActiveLaunchTarget()
+	{
+		try
+		{
+			ILaunchBarManager launchBarManager = Activator.getService(ILaunchBarManager.class);
+			ILaunchTargetUIManager targetUIManager = Activator.getService(ILaunchTargetUIManager.class);
+			if (launchBarManager == null || targetUIManager == null)
+			{
+				return;
+			}
+			ILaunchTarget target = launchBarManager.getActiveLaunchTarget();
+			if (target != null)
+			{
+				targetUIManager.editLaunchTarget(target);
+			}
+		}
+		catch (Exception e)
+		{
+			Logger.log(e);
+		}
+	}
+}

bundles/com.espressif.idf.debug.gdbjtag.openocd/src/com/espressif/idf/debug/gdbjtag/openocd/ui/Messages.java

@@ -75,6 +75,9 @@ public class Messages
 	public static String ServerTimeoutErrorDialog_message;
 	public static String ServerTimeoutErrorDialog_customAreaMessage;
 
+	public static String BoardNotSelectedDialog_title;
+	public static String BoardNotSelectedDialog_message;
+
 	// ------------------------------------------------------------------------
 
 	static

bundles/com.espressif.idf.debug.gdbjtag.openocd/src/com/espressif/idf/debug/gdbjtag/openocd/ui/messages.properties

@@ -419,3 +419,7 @@ OpenOCDConsole_ErrorGuideMessage=Please refer to the troubleshooting guide below
 ServerTimeoutErrorDialog_customAreaMessage=To increase timeout time visit <a>the Espressif Preference Page</a>.
 ServerTimeoutErrorDialog_message=Starting OpenOCD timed out. Try to increase the `GDB server launch timeout`
 ServerTimeoutErrorDialog_title=Problem Occurred
+
+## Board Not Selected Dialog ##
+BoardNotSelectedDialog_title=No board selected
+BoardNotSelectedDialog_message=No board is selected. Edit the launch target to select a board?

bundles/com.espressif.idf.launch.serial.core/src/com/espressif/idf/launch/serial/internal/Messages.java

@@ -24,6 +24,8 @@ public class Messages extends NLS
 	public static String SerialFlashLaunch_Resume;
 	public static String SerialPortNotFoundTitle;
 	public static String SerialPortNotFoundMsg;
+	public static String BoardNotSelectedTitle;
+	public static String BoardNotSelectedMsg;
 	static
 	{
 		// initialize resource bundle

bundles/com.espressif.idf.launch.serial.core/src/com/espressif/idf/launch/serial/internal/SerialFlashLaunchConfigDelegate.java

@@ -63,6 +63,7 @@
 import com.espressif.idf.core.util.IDFUtil;
 import com.espressif.idf.core.util.RecheckConfigsHelper;
 import com.espressif.idf.core.util.StringUtil;
+import com.espressif.idf.core.variable.JtagVariableResolver;
 import com.espressif.idf.launch.serial.util.ESPFlashUtil;
 import com.espressif.idf.terminal.connector.serial.connector.SerialSettings;
 import com.espressif.idf.terminal.connector.serial.launcher.SerialLauncherDelegate;
@@ -105,6 +106,13 @@ public void launch(ILaunchConfiguration configuration, String mode, ILaunch laun
 		}
 		if (ESPFlashUtil.isJtag())
 		{
+			// Abort early with a clear message when no board is selected. Otherwise OpenOCD would run without a board
+			// configuration and fail with the cryptic "invalid command name \"program_esp_bins\"" error.
+			if (!isBoardConfigured(configuration))
+			{
+				showBoardNotSelectedMessage(configuration);
+				return;
+			}
 			ESPFlashUtil.flashOverJtag(configuration, launch);
 			return;
 		}
@@ -271,6 +279,52 @@ private static void showMessage(ILaunchConfiguration configuration)
 		});
 	}
 
+	/**
+	 * Determines whether a board configuration is available for JTAG flashing. A board is considered configured when it
+	 * is resolvable from the active launch target, or when the (possibly manually edited) resolved JTAG flash arguments
+	 * already reference a board configuration file.
+	 *
+	 * @param configuration the launch configuration
+	 * @return {@code true} if a board configuration is available, {@code false} otherwise
+	 */
+	private boolean isBoardConfigured(ILaunchConfiguration configuration)
+	{
+		if (JtagVariableResolver.isBoardConfigResolvable())
+		{
+			return true;
+		}
+
+		// Fall back to inspecting the resolved JTAG flash arguments for a manually configured board file.
+		try
+		{
+			String arguments = configuration.getAttribute(IDFLaunchConstants.ATTR_JTAG_FLASH_ARGUMENTS,
+					StringUtil.EMPTY);
+			String resolved = VariablesPlugin.getDefault().getStringVariableManager()
+					.performStringSubstitution(arguments);
+			return resolved != null && resolved.contains("board/"); //$NON-NLS-1$
+		}
+		catch (CoreException e)
+		{
+			Logger.log(e);
+		}
+		return false;
+	}
+
+	private static void showBoardNotSelectedMessage(ILaunchConfiguration configuration)
+	{
+		Display.getDefault().asyncExec(() -> {
+			boolean isYes = MessageDialog.openConfirm(Display.getDefault().getActiveShell(),
+					com.espressif.idf.launch.serial.internal.Messages.BoardNotSelectedTitle,
+					com.espressif.idf.launch.serial.internal.Messages.BoardNotSelectedMsg);
+			if (isYes)
+			{
+				ILaunchTargetUIManager targetUIManager = Activator.getService(ILaunchTargetUIManager.class);
+				ILaunchTargetManager launchTargetManager = Activator.getService(ILaunchTargetManager.class);
+				targetUIManager.editLaunchTarget(launchTargetManager.getDefaultLaunchTarget(configuration));
+			}
+		});
+	}
+
 	@Override
 	public boolean buildForLaunch(ILaunchConfiguration configuration, String mode, ILaunchTarget target,
 			IProgressMonitor monitor) throws CoreException

bundles/com.espressif.idf.launch.serial.core/src/com/espressif/idf/launch/serial/internal/messages.properties

@@ -11,4 +11,6 @@
 SerialFlashLaunch_Pause=Pausing serial port
 SerialFlashLaunch_Resume=Resuming serial port
 SerialPortNotFoundTitle=Serial port not found
-SerialPortNotFoundMsg=The serial port was not found. Please select it first and flash the project again.
+SerialPortNotFoundMsg=The serial port was not found. Please select it first and flash the project again.
+BoardNotSelectedTitle=No board selected
+BoardNotSelectedMsg=No board is selected. Edit the launch target to select a board?