1Build and Flash with Make (Legacy GNU Make)
2===========================================
3:link_to_translation:`zh_CN:[中文]`
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5.. include:: ../gnu-make-legacy.rst
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8Finding a project
9-----------------
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11As well as the `esp-idf-template <https://github.com/espressif/esp-idf-template>`_ project, ESP-IDF comes with some example projects on github in the :idf:`examples` directory.
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13Once you've found the project you want to work with, change to its directory and you can configure and build it.
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16Configuring your project
17------------------------
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19::
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21    make menuconfig
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23
24Compiling your project
25----------------------
26
27::
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29    make all
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31... will compile app, bootloader and generate a partition table based on the config.
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34Flashing your project
35---------------------
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37When ``make all`` finishes, it will print a command line to use esptool.py to flash the chip. However you can also do this from make by running::
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39    make flash
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41This will flash the entire project (app, bootloader and partition table) to a new chip. Also if partition table has ota_data then this command will flash a initial ota_data.
42It allows to run the newly loaded app from a factory partition (or the first OTA partition, if factory partition is not present).
43The settings for serial port flashing can be configured with `make menuconfig`.
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45You don't need to run ``make all`` before running ``make flash``, ``make flash`` will automatically rebuild anything which needs it.
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47
48Compiling & Flashing Just the App
49---------------------------------
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51After the initial flash, you may just want to build and flash just your app, not the bootloader and partition table:
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53* ``make app`` - build just the app.
54* ``make app-flash`` - flash just the app.
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56``make app-flash`` will automatically rebuild the app if it needs it.
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58There's no downside to reflashing the bootloader and partition table each time, if they haven't changed.
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61The Partition Table
62-------------------
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64Once you've compiled your project, the "build" directory will contain a binary file with a name like "my_app.bin". This is an ESP32 image binary that can be loaded by the bootloader.
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66A single ESP32's flash can contain multiple apps, as well as many kinds of data (calibration data, filesystems, parameter storage, etc). For this reason, a partition table is flashed to offset 0x8000 in the flash.
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68Each entry in the partition table has a name (label), type (app, data, or something else), subtype and the offset in flash where the partition is loaded.
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70The simplest way to use the partition table is to `make menuconfig` and choose one of the simple predefined partition tables:
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72* "Single factory app, no OTA"
73* "Factory app, two OTA definitions"
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75In both cases the factory app is flashed at offset 0x10000. If you `make partition_table` then it will print a summary of the partition table.
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77For more details about :doc:`partition tables <../api-guides/partition-tables>` and how to create custom variations, view the :doc:`documentation <../api-guides/partition-tables>`.
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