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Eclipse plugin for ESP-IDF CMake based projects (4.x and above)

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ESP-IDF Eclipse Plugin

ESP-IDF Eclipse Plugin brings developers an easy-to-use Eclipse-based development environment for developing ESP32 based IoT applications. It provides better tooling capabilities, which simplifies and enhances standard Eclipse CDT for developing and debugging ESP32 IoT applications. It offers advanced editing, compiling, flashing and debugging features with the addition of Installing the tools, SDK configuration and CMake editors.

The plug-in runs on macOS, Windows and Linux platforms.

Note: It supports ESP-IDF CMake based projects (4.x and above) with esp32,esp32s2, esp32s3 and esp32c3 boards.

To get a quick understanding about ESP-IDF and Eclipse plugin features check our session which was presented in EclipseCon 2020

Table Of Contents

Get Started
Other IDE Features

Installing Prerequisites

The minimum requirements for running the IDF Eclipse plug-ins are below.

  • Java 17 and above : Download and install Java SE from here
  • Python 3.6 and above : Download and install Python from here
  • Eclipse IDE for C/C++ Developers 2022-09 (2021-06 to 2022-09 should work fine. 2022-12 is not yet supported) : Download and install Eclipse CDT package from here
  • Git : Get the latest git from here
  • ESP-IDF 4.0 and above : Clone the ESP-IDF repo from here

Note: Make sure Java, Python and Git are available on the system environment PATH.

We also offer Espressif-IDE Offline Installer for Windows which comes with OpenJDK, Python, CMake, Git, ESP-IDF, Eclipse IDE, IDF Eclipse plugins and required build tools. Please check our Espressif-IDE Offline Installer page.

More details on the Espressif-IDE can be found here.

Installing IDF Plugin using update site URL

You can install the IDF Eclipse plugin into an existing Eclipse CDT installation using the update site URL. You first need to add the release repository URL as follows:

  1. Go to Help > Install New Software
  2. Click Add…, and in the pop-up window:
  3. Select Espressif IDF from the list and proceed with the installation

Note: Though screenshots are captured from macOS, installation instructions are applicable for Windows, Linux and macOS.

Installing ESP-IDF

To install ESP-IDF directly from the Eclipse

  1. Go to Espressif > Download and Configure ESP-IDF
  2. From the Download ESP-IDF section, choose ESP-IDF version and directory to download
  3. Click on Finish

To configure an existing ESP-IDF

  1. Go to Espressif > Download and Configure ESP-IDF
  2. Check Use an existing ESP-IDF directory from the file system
  3. Choose an existing ESP-IDF directory from the file system
  4. Click on Finish

This will download a specified esp-idf version and configures IDF_PATH in the Eclipse CDT build environment variables.

Installing ESP-IDF Tools

ESP-IDF requires some prerequisite tools to be installed so you can build firmware for the ESP32. The prerequisite tools include Python, Git, cross-compilers, menuconfig tool, CMake and Ninja build tools.

For this getting started guide, follow the instructions below.

  1. Navigate to Espressif > ESP-IDF Tools Manager > Install Tools
  2. Provide the ESP-IDF Directory path
  3. Provide Git and Python executable locations if they are not auto-detected.
  4. Click on Install Tools to proceed with the installation process. Check the Console for the installation details.
  5. Installation might take a while if you're doing it for the first time since it has to download and install xtensa-esp32-elf, esp32ulp-elf, cmake, openocd-esp32 and ninja tools.

Note: Make sure you run this step even if you've already installed the required tools, since it sets the IDF_PATH, PATH, OPENOCD_SCRIPTS and IDF_PYTHON_ENV_PATH to the Eclipse CDT build environment based on the idf_tools.py export command.

ESP-IDF Directory selection dialog:

Create a new Project

  1. Make sure you are in C/C++ Perspective
  2. Go to File > New > Espressif IDF Project (If you don't see this, please reset the perspective from Window > Perspective > Reset Perspective...)
  3. Provide the Project name (The ESP-IDF build system does not support spaces in the project path)
  4. Click Finish

To create a project using existing esp-idf templates, please refer to this

Note: You will see a lot of unresolved inclusion errors in the editor and those will be resolved only after the build.

Configuring Launch target

Next, we need to tell CDT to use the toolchain for our project so that all the headers will be indexed and resolved. This is accomplished through the Launch Bar, the new widget set you see on the far left of the toolbar. This will be shown only when you have a project in the project explorer.

  1. Click on the third dropdown window from the top bar
  2. Select New Launch Target
  3. Select ESP Target
  4. Provide properties for the target where you would like to launch the application. Enter a Name for the target and select the Serial Port your ESP device is connected to on your machine.

Compiling the Project

  1. Select a project from the Project Explorer
  2. Select Run from the first drop-down, which is called Launch Mode
  3. Select your application from the second drop-down, which is called Launch Configuration(Auto-detected)
  4. Select target from the third drop-down, which is called Launch Target
  5. Now click on the Build button widget which you see on the far left of the toolbar

Flashing the Project

ESP-IDF has a tool called idf.py which is a wrapper around make flash command with some handy operations. Flash operation can be initiated with just a click of a launch button (second button from the left on the top bar) and it's auto-configured to flash the application with the default flash command i.e, idf.py -p PORT flash.

To provide the customized flash arguments, please follow this link for further instructions.

To configure flashing via JTAG, please refer to this JTAG Flashing guide.

Viewing Serial Output

To see the serial output in Eclipse, we need to configure the ESP-IDF Serial Monitor to connect to the serial port. This is integrated with the IDF Monitor. Please check more details here.

  1. Click on the Open a Terminal icon from the toolbar
  2. Choose ESP-IDF Serial Monitor from the terminal drop-down
  3. Select Serial Port for your board if it's not detected
  4. Configure serial monitor filter options for output filtering
  5. Click on OK to launch the terminal, which will listen to the USB port

ESP-IDF Serial Monitor Settings

ESP-IDF Serial Monitor will allow you to configure the default settings of the serial monitor character limit and number of lines.

  1. Navigate to Espressif from the Eclipse Preferences
  2. Click on ESP-IDF Serial Monitor Settings
  3. Provide Console Line Width and Limit Console Output

Debugging the Project

Other IDE Features

Create a new project using ESP-IDF Templates

  1. Make sure you're in C/C++ Perspective
  2. Go to File > New > Espressif IDF Project (If you don't see this, please reset the perspective from Window > Perspective > Reset Perspective..)
  3. Provide the Project name
  4. Click Next
  5. Check Create a project using one of the templates
  6. Select the required template from the tree
  7. Click Finish

Note: You will see a lot of unresolved inclusion errors in the editor and those will be resolved only after the build.

Tools Installation Wizard

You can use the install tools wizard to manage the tools installation via a wizard. The advantage of this method over the exisitng installation is that you can easily manage the whole flow via wizard and install the tools in ESP-IDF framework that you only need.

For getting started:

  1. Navigate to Espressif > ESP-IDF Tools Manager > Tools Installation Wizard (Preview)

  2. The wizard will start and you can select the location for the Git and Python, if they are already present on the system PATH or registry the tools will be populated. After selection you can click Next.

  3. Next page will let you select the folder for existing ESP-IDF or you can also select from the drop down list to download the available versions. You can also select master from the list to clone the master for ESP-IDF from github

  4. After you select Next you will see the list of all the available tools in the selected ESP-IDF version, this page lets you select only the recommended tools or you can select the tools you want to. You can also filter out the tools via the filter text box or based on the target. The wizard page is the last page and will Install and Download if necessary all the selected tools required. After you have installed all the tools you can finish the wizard and start creating projects.

SDK Configuration editor

Project configuration is held in a single file called sdkconfig in the root directory of the project. This configuration file can be modified using SDK Configuration Editor

To launch the SDK Configuration editor:

  1. Navigate to sdkconfig file
  2. Double click on the file to launch the SDK configuration editor
  3. Use Ctrl+S or Command+S based on the OS environment to save the changes. You can also use Eclipse Save button from the toolbar
  4. To revert the sdkconfig editor changes, you can either close the editor without saving them or you can right click on the sdkconfig file and select Load sdkconfig menu option to revert the changes from the editor.

CMake Editor

CMake Editor Plug-in is integrated with IDF Plugin for editing CMake files such as CMakeLists.txt. It provides syntax coloring, CMake command content assist, and code templates.

CMake editor preferences can be controlled using Eclipse > Preferences > CMakeEd

ESP-IDF Application Size Analysis

Application Size Analysis editor provides a way to analyze the static memory footprint of your application. It has two sections - Overview and Details. The Overview section provides a summary of the application memory usage and the Details section will have in-depth details about components and per-symbol level memory information.

Details table viewer also provides you with searching and sorting capabilities on various columns. To launch the Application Size Analysis editor:

  1. Right-click on the project
  2. Select ESP-IDF: Application Size Analysis menu option to launch the editor

Application Size Analysis - Overview

Application Size Analysis - Details

ESP-IDF Terminal

This would launch a local terminal with all the environment variables which are set under Preferences > C/C++ > Build > Environment. The default working directory would be either the currently selected project or IDF_PATH if there is no project selected.

The terminal PATH is also configured with esptool, espcoredump, partition_table, and app_update component paths so that it will be handy to access them directly from the ESP-IDF terminal.

To launch the ESP-IDF Terminal:

  • Click on the Open a Terminal icon from the toolbar
  • Choose ESP-IDF Terminal from the terminal drop-down and click OK to launch a terminal

Installing ESP-IDF Components

You can install the ESP-IDF Components directly into your project from the available components online. Follow the steps below.

  • Right click on the project from project explorer in which you want to add the component to and Select Install ESP-IDF Components

    A new window will open up showing all the available component to be installed.

  • From the window you can click on Install button to add that component to the project. To get to the readme file for that component you can click on More Info which will open the browser link to the readme file of that component.

Already added components are also shown but the Install button changes text to Already Added and is disabled.

Configuring Environment Variables

Eclipse auto configures the required environment variables in the Preferences > C/C++ Build > Environment section if IDF Tools are installed using Espressif > ESP-IDF Tools Manager > Install Tools menu option.

Required environment variables:

  • IDF_PATH
  • PATH
  • OPENOCD_SCRIPTS
  • IDF_PYTHON_ENV_PATH

If the required environment variables are not configured for any reason, please follow the step by step instructions below.

  • Click on the Environment preference page under C/C++ Build.
  • Click Add… again, and enter name IDF_PATH. The value should be the full path where ESP-IDF is installed.
  • Similarly we should configure OPENOCD_SCRIPTS, IDF_PYTHON_ENV_PATH and PATH environment variables

This is how they should look:

IDF_PATH

/Users/user-name/esp/esp-idf

OPENOCD_SCRIPTS

/Users/user-name/.espressif/tools/openocd-esp32/v0.10.0-esp32-20190313/openocd-esp32/share/openocd/scripts

IDF_PYTHON_ENV_PATH

/Users/user-name/.espressif/python_env/idf4.0_py3.7_env

PATH

/Users/user-name/.espressif/tools/xtensa-esp32-elf/esp32-2019r1-8.2.0/xtensa-esp32-elf/bin:/Users/user-name/.espressif/tools/esp32ulp-elf/2.28.51.20170517/esp32ulp-elf-binutils/bin:/Users/user-name/.espressif/tools/cmake/3.13.4/CMake.app/Contents/bin:/Users/user-name/.espressif/tools/openocd-esp32/v0.10.0-esp32-20190313/openocd-esp32/bin:/Users/user-name/.espressif/tools/ninja/1.9.0/:/Users/user-name/.espressif/python_env/idf4.0_py3.7_env/bin:/Users/user-name/esp/esp-idf/tools:$PATH

Configuring Toolchains

We need to tell Eclipse CDT what core build toolchain and CMake toolchain need to be used to build the project. However, this will be auto-detected if you've installed the tools using the Espressif > ESP-IDF Tools Manager > Install Tools option from the Eclipse.

If these toolchains are not detected for any reason, please follow the step by step instructions below to add a new toolchain.

Configuring Core Build Toolchains

  1. Open Eclipse Preferences
  2. Navigate to C/C++ > Core Build Toolchains preference page
  3. Click on Add.. from the User defined Toolchains tables
  4. Select GCC as a toolchain type
  5. Click on Next
  6. Provide the GCC Toolchain Settings:

Compiler: /Users/user-name/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc, Operating System: esp32, CPU Architecture: xtensa

Configuring CMake Toolchain

We now need to tell CDT which toolchain to use when building the project. This will pass the required arguments to CMake when generating the Ninja files.

  1. Navigate to C/C++ > CMake preference page
  2. Click Add... and this will launch the New CMake Toolchain configuration dialog
  3. Browse CMake toolchain Path. Example: /Users/user-name/esp/esp-idf/tools/cmake/toolchain-esp32.cmake
  4. Select GCC Xtensa Toolchain compiler from the drop-down list. Example: esp32 xtensa /Users/user-name/esp/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc

NOTE: Eclipse CDT has a bug in saving the toolchain preferences, hence it's recommended to restart Eclipse before we move further configuring the launch target.

Selecting Clang Toolchain

With ESP-IDF Eclipse Plugin v2.7.0 and higher you can build your project with Clang Toolchain

  1. After updating/installing the ESP-IDF Eclipse plugin to v2.7.0 or higher, you need to run Espressif -> ESP-IDF Tools Manager -> Install Tools to update the toolchain list and environment variables, that are necessary for Clang Toolchain.
  2. After creating a new project, edit project's configuration image
  3. Go to Build Settings tab and select clang toolchain there: image

NOTE: Clang Toolchain now is an experimental feature and you may face some build issues due to the incompatibility of esp-idf. Below is a description of how to fix the most common build issue on the current esp-idf master (ESP-IDF v5.1-dev-992-gaf28c1fa21-dirty)

To work around clang build errors please refer to this.

Launch Configuration

To provide the customized launch configuration and flash arguments, please follow the step by step instructions below.

  1. Click on the Launch Configuration edit button
  2. Switch to the Main tab
  3. Specify the Location where this application has to run. Since idf.py is a python file, will configure the python system path. Example:${system_path:python}
  4. Specify Working directory of the application. Example: ${workspace_loc:/hello_world}
  5. In additional arguments, provide a flashing command which will run in the specified working directory
  6. Flash command looks like this: /Users/user-name/esp/esp-idf/tools/idf.py -p /dev/cu.SLAB_USBtoUART flash
  7. Click OK to save the settings
  8. Click on the Launch icon to flash the application to the selected board

Changing Language

To change the plugin language a menu is provided to show the list of available languages for the plugin. Remember this will only change the language of the eclipse if the required language bundles for the selected language are installed or else only the plugin interfaces will be changed.

  1. Click on the Espressif menu from menu bar
  2. Select the Change Language from the menu drop down
  3. From the sub menu select the language you want
  4. Eclipse will restart with selected language

Troubleshooting

Suggestions for solving errors from ESP-IDF by hints viewer

If you run into a problem during a build, chances are that there is a hint for this error in the esp-idf hint database, which is stored in tools/idf_py_actions/hints.yml of ESP-IDF. The ESP-IDF Eclipse plugin provides a hint viewer where you can type an error message and find a hint for it. Prerequisites for it is to have hints.yml, which is available from esp-idf v5.0 and higher. If you are using lower version of the esp-idf, you can still use the hints viewer. To do it, you have manually download the hints.yml file from here and put it to your esp-idf/tools/idf_py_actions/ path. To download a file from the github, right click the Raw button and then Save as...

To open hints viewer go to Windows -> Show View -> Other... -> Espressif -> Hints. You will see the following view: image

Now you can type or copy paste some error from the build log, for example: ccache error: Failed to create temporary file for esp-idf/libsodium/CMakeFiles/..../....: No such file or directory

image

Double clicking on the row will give you a hint message so you can clearly see it if it doesn't fit on your screen in the table view.

image

Error Log

The Error Log view captures all the warnings and errors logged by plug-ins. The underlying log file is a .log file stored in the .metadata subdirectory of the workspace.

The Error Log view is available in Window > Show View > Error Log.

To export the current log view content into a file, press the Export Log toolbar button or select Export Log... from the context menu. Then, enter a file name.

Always provide an error log when reporting an issue.

Console View Log

The Console View provides all the warnings and errors related to the current running process or build. To access the console view.

From the menu bar, Window > Show View > Console.

CDT Global Build Log

Go to Preferences > C/C++ > Build > Logging

Espressif IDF Tools Console

The Espressif IDF Tools Console is part of Console view, this will be opened only during the installation of IDF tools from the Eclipse.

If you encounter any issue while installing the IDF tools using Espressif > ESP-IDF Tools Manager > Install tools, please check the Espressif IDF Tools Console to see the errors reported.

If this is not active, it can be switched by clicking on the Display Selected Console icon from the console view.

Heap Tracing

Please refer to this doc.

Installing IDF Eclipse Plugin from Eclipse Market Place

Please follow the steps below to install IDF Eclipse Plugin from the Eclipse Market Place.

  1. In Eclipse, choose Help > Eclipse Market Place...
  2. Enter ESP-IDF Eclipse Plugin in the search box to find the plugin
  3. Click on Install to follow the installation instructions.
  4. Restart the Eclipse

Installing IDF Eclipse Plugin from Local Archive

  1. Download the latest update site archive for IDF Eclipse Plugin here - https://github.com/espressif/idf-eclipse-plugin/releases
  2. In Eclipse, choose Help > Install New Software
  3. Click Add… button
  4. Select Archive from Add repository dialog and select the file com.espressif.idf.update-vxxxxxxx.zip
  5. Click Add
  6. Select Espressif IDF from the list and proceed with the installation
  7. Restart the Eclipse

How do I upgrade my existing IDF Eclipse Plugin?

If you are installing IDF Eclipse Plugin into your Eclipse for the first time, you first need to add the new release's repository as follows:

  1. Window > Preferences > Install/Update > Available Software Sites
  2. Click Add
  3. Enter the URL of the new repository https://dl.espressif.com/dl/idf-eclipse-plugin/updates/latest/
  4. Click Ok

If you've already installed IDF Eclipse Plugin using update site URL, you can get the latest changes using below

  1. Help > Check for Updates
  2. If updates are found, select Espressif IDF Plugins for Eclipse and deselect all other items
  3. Click Next to proceed with the installation

Importing an existing IDF Project

  1. Make sure you're in C/C++ Perspective.
  2. Right click in the Project Explorer
  3. Select Import.. Menu
  4. Select Existing IDF Project from Espressif import wizard menu list
  5. Click Next
  6. Click on Browse... to choose an existing project location directory
  7. Provide Project name if you wish you have a different name
  8. Click Finish to import the selected project into eclipse workspace as a CMake project

Importing an existing Debug launch configuration

To import an existing launch configuration into Eclipse:

  1. Select Import... from the File menu
  2. In the Import dialog box, expand the Run/Debug group and select Launch Configurations
  3. Click on Next
  4. Click on Browse... to select the required location in the local file system
  5. Select the folder containing the launch files and then click OK
  6. Select the checkboxes for the required folder and launch file
  7. If you are replacing an existing configuration with the same name then select Overwrite existing launch configurations without warning
  8. Click on Finish

GDBStub Debugging

You can now use the gdb stub debugging inside our eclipse plugin to help you diagnose and debug issues on chip via eclipse when it is in panic mode.

To enable gdb stub debugging for a project you need to enable it first in the sdkconfig. Launch the sdkconfig in project root by double clicking on it which will open the configuration editor.

Expand the Component Config section and select ESP System Settings. From the settings on the right for Panic Handler behaviour select the GDBStub on Panic option from the list

Now you will be taken to the gdbstub debugger automatically when you connect the serial monitor and there is a panic for this example.

Create a template hello_world project and add the following lines in the main c file.

This is a global variable<br/>
COREDUMP_DRAM_ATTR uint8_t global_var;

Now add these two lines just above esp_restart() function
global_var = 25;
assert(0);
The final file should be something like this

Build and flash the project and launch the serial monitor. On the line number 45 we are signaling for a failing assert which will put the chip in panic mode and when that line reaches you will be prompted to switch the perspective to debug mode and the chip will be halted, remember that this is a panic mode and you cannot continue the execution from here you will have to stop and restart the chip through idf commands or simply restart the serial monitor.

You can view the registers stack trace and even view the value of variables in stack frame. To exit the debug session simply press stop button.

Core Dump Debugging

The idf eclipse plugin allows you to debug the core dump if any crash occurs on the chip and the configurations are set. Currently only the UART core dump capture and debugging is supported.

To enable core dump debugging for a project you need to enable it first in the sdkconfig. Launch the sdkconfig in project root by double clicking on it which will open the configuration editor.
Click on the the Core Dump from the settings on the left. and select Data Destination as UART.

This will enable the core dump debugging and whenever you connect a serial monitor for that project if any crash occurs it will load the dump and open a debug perspective in eclipse to let you diagnose the dump where you can view all the information in the core dump.

You can view the registers stack trace and even view the value of variables in stack frame. To exit the debug session simply press stop button.

Device Firmware Upgrade (DFU) through USB

Device Firmware Upgrade (DFU) is a mechanism for upgrading the firmware of devices through Universal Serial Bus (USB). There are a few requirements that need to be met:

  • DFU is supported by ESP32-S2 and ESP32-S3 chips.
  • You will need to do some electrical connection work (Here is a guide for the ESP32-S2 board). The necessary connections for the USB peripheral are shown in the following table.
GPIO USB
20 D+ (green)
19 D- (white)
GND GND (black)
+5V +5V (red)
  • The chip needs to be in bootloader mode for the detection as a DFU device and flashing. This can beachieved by pulling GPIO0 down (e.g. pressing the BOOT button), pulsing RESET down for a moment and releasing GPIO0.
  • Install USB drivers (Windows only). The drivers can be installed by the Zadig tool. The manual installation of the driver in Device Manager of Windows is not recommended because the flashing might not work properly. Please make sure that the device is in download mode before running the tool and that it detects the device before installing the drivers. The Zadig tool might detect several USB interfaces of the target. Please install the WinUSB driver for only that interface for which there is no driver installed (probably it is Interface 2) and don't re-install the driver for the other interface.

After meeting requirements you are free to build and flash via DFU. How to use DFU:

  • Activate the DFU toggle button on the toolbar.
  • Select the correct target and port through the target panel
  • Now, if you will use the build command an extra file will be created (dfu.bin), which will be later used for flashing.

DFU actions

Additional information, including common errors and known issues, is mentioned in this guide.

Application Level Tracing

ESP-IDF provides a useful feature for program behavior analysis called Application Level Tracing. IDF-Eclipse plugin has UI, that allows using start, stop tracing commands and process received data. To familiarize yourself with this library, you can use the app_trace_to_host project. This project can be created from the plugin itself:

Before you start using application-level tracing, it is important to create a debug configuration for the project where you must select the board you are using in order to successfully start the OpenOCD server.

After debug configuration is created, right click on the project in project explorer and click on ESP-IDF:Application Level Tracing:

It can take a while to open the application level tracing dialog because the OpenOCD server starts first, so you don't need to start it externally. At the very top of the application-level trace dialog, there are auto-configured fields that you can change for the trace start command.

Start command:

  • Syntax: start <outfile> [poll_period [trace_size [stop_tmo [wait4halt [skip_size]]]]
  • Argument:
    • outfile: Path to file to save data from both CPUs. This argument should have the following format: file://path/to/file.
    • poll_period: Data polling period (in ms) for available trace data. If greater than 0 then command runs in non-blocking mode. By default, 1 ms.
    • trace_size: Maximum size of data to collect (in bytes). Tracing is stopped after specified amount of data is received. By default -1 (trace size stop trigger is disabled).
    • stop_tmo: Idle timeout (in sec). Tracing is stopped if there is no data for a specified period of time. By default -1 (disable this stop trigger). Optionally set it to a value longer than the longest pause between tracing commands from the target.
    • wait4halt: If 0 start tracing immediately, otherwise command waits for the target to be halted (after reset, by breakpoint etc.) and then automatically resumes it and starts tracing. By default, 0.
    • skip_size: Number of bytes to skip at the start. By default, 0.

Additional information can be found here.

The next two fields Trace Processing Script and Start Parsing Command are used to parse the output file.

  • Trace Processing Script is used to provide the path to the parsing script, by default it is logtrace_proc.py from esp-idf.
  • Start Parsing Command allows you to check the resulting parsing command and edit it if it's necessary. By default, this field is automatically configured to match $IDF_PATH/tools/esp_app_trace/logtrace_proc.py/path/to/trace/file/path/to/program/elf/file. Note the Start parse button is disabled until a dump file is available. To generate it, click the Start button at the bottom of the dialog box. After you click, the button changes to Stop so that you can stop tracking.

When output file is generated, you can click on Start parse button and you will see parse script output in the eclipse console:

ESP-IDF Master Update

If you are using the master version of ESP-IDF and want to update it, you can do so in the plugin by going to Espressif -> ESP-IDF Tool Manager and clicking the Update ESP-IDF master command there.

image

Note: This command is visible only if you are on the master branch in ESP-IDF

Partition Table Editor UI for ESP-IDF

ESP-IDF: Partition Table Editor command allows to edit your partition table in a more convenient way, where you can see the supported types and subtypes and monitor the correctness of the entered data.

Note: This command is available in the idf-eclipse plugin 2.8.0 and higher

Steps:

  1. Open any IDF Project in Project Explorer where you want to have custom partition table.
  2. To use a custom partition table, `Custom partition table CSV' must be set in the sdkconfig like this:

partition_table_editor

  1. Right click on project in the Project Explorer and click on ESP-IDF: Partition Table Editor command:

partition_table_editor_3

  1. When you first open the partition table editor for the selected project, you will see the standard editable content. If there is any error it will be highlighted, you can hover your mouse over it to read a hint what it is about: partition_table_editor_4

  2. Don't forget to click "Save" or "Save and Quit" to save your changes.

NVS Table Editor

NVS Table Editor helps to create a binary file based on key-value pairs provided in a CSV file. The resulting binary file is compatible with NVS architecture defined in ESP_IDF Non Volatile Storage. The expected CSV format is:

key,type,encoding,value     <-- column header (must be the first line)
namespace_name,namespace,,  <-- First entry must be of type "namespace"
key1,data,u8,1
key2,file,string,/path/to/file

Note: This is based on ESP-IDF NVS Partition Generator Utility.

Steps:

  1. Right click on project in the Project Explorer
  2. Select the ESP-IDF: NVS Table Editor command:

NVS Table Editor

Note: This command is available in the idf-eclipse plugin 2.8.0 and higher

  1. Make desire changes to CSV data.
  2. Save changes by clicking the Save button. If everything is ok, you will see an information message at the top of the dialog: NVS_TABLE_EDITOR_2png
  3. Generate the partition binary (Choose encrypt to encrypt the binary and disable the generate key option to use your own key if desired). You will see an information message at the top of the dialog about the result of generation the binaries. you can hover your mouse over it to read the whole message if it's too long: NVS_Table_Editor_4

Note: If there are any errors, you will see them highlight, hover on the error icon to read more about the error. Also, the error message at the top of the dialog if saving the CSV file is not successful:

NVS_Table_editor_5

After all these steps, you should see nvs.csv and nvs.bin files in the project directory.

How to build locally

  1. Install prerequisites Java 11+ and Maven

  2. Run below commands to clone and build

    git clone https://github.com/espressif/idf-eclipse-plugin.git
cd idf-eclipse-plugin
mvn clean verify -Djarsigner.skip=true

This will generate p2 update site artifact in the location releng/com.espressif.idf.update/target with name com.espressif.idf.update-* and this can be installed using the mechanism mentioned here

How do I get the latest development build

  1. Go to master branch last commit here
  2. Click on a ✅ green tick mark
  3. Click on Details
  4. Click on Summary on the left
  5. Scroll down to see the artifacts section
  6. Download com.espressif.idf.update p2 update site archive and install as per the instructions mentioned here

Custom IDE Configuration

Custom build directory

IDE allows configuring a custom build directory to the project:

  1. Select a project and click on a launch configuration Edit button from the top toolbar and this will the launch Edit Configuration window
  2. Navigate to the Build Settings tab
  3. In the Additional CMake Arguments section, provide a custom build directory with arguments -B <custom build path> with an absolute path. Custom build directory path could be within the project or a path from the file system. For example: -B /Users/myUser/esp/generated
  4. Click on Ok and build the project

Note this configuration changes where all the project build artifacts will be generated.

ESP-IDF Eclipse Plugin Compatibility Matrix

IEP Eclipse Java Tools Installer Description
IEP 2.3.0 Eclipse 2021-09, 2021-06 Java 11 and above ESP-IDF Tools Windows Installer 2.11 ESP-IDF Tools Windows Installer 2.11 comes with IEP 2.2.0 and this need to be updated to 2.3.0
IEP 2.2.0 Eclipse 2021-06, 2021-03, 2020-12 Java 11 and above ESP-IDF Tools Windows Installer 2.10
IEP 2.1.2 Eclipse 2021-06, 2021-03, 2020-12, 2020-09 Java 11 and above ESP-IDF Tools Windows Installer 2.9 IEP 2.1.2 added a support for Eclipse 2021-06
IEP 2.1.1 Eclipse 2021-03, 2020-12, 2020-09 Java 11 and above ESP-IDF Tools Windows Installer 2.8 ESP-IDF Tools Windows Installer 2.8 comes with IEP 2.1.0 and this need to be updated to 2.1.1
IEP 2.1.0 Eclipse 2021-03, 2020-12, 2020-09 Java 11 and above ESP-IDF Tools Windows Installer 2.6 beta IEP 2.1.0 added a support for Eclipse 2021-03
IEP 2.0.0 Eclipse 2020-12, 2020-09, 2020-06 Java 11 and above ESP-IDF Tools Windows Installer 2.6 beta
IEP 1.2.4 Eclipse 2020-12, 2020-09, 2020-06, 2020-03 Java 1.8 and above Not supported IEP 1.2.4 added a support for Eclipse 2020-12

How to raise bugs

Please raise the issues here https://github.com/espressif/idf-eclipse-plugin/issues with the complete environment details and log.

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Eclipse plugin for ESP-IDF CMake based projects (4.x and above)

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