Build and Flash with Make ========================= Finding a project ----------------- As well as the `esp-idf-template `_ project mentioned in the setup guide, ESP-IDF comes with some example projects on github in the :idf:`examples` directory. Once you've found the project you want to work with, change to its directory and you can configure and build it: Configuring your project ------------------------ `make menuconfig` Compiling your project ---------------------- `make all` ... will compile app, bootloader and generate a partition table based on the config. Flashing your project --------------------- When `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: `make flash` This will flash the entire project (app, bootloader and partition table) to a new chip. The settings for serial port flashing can be configured with `make menuconfig`. You don't need to run `make all` before running `make flash`, `make flash` will automatically rebuild anything which needs it. Compiling & Flashing Just the App --------------------------------- After the initial flash, you may just want to build and flash just your app, not the bootloader and partition table: * `make app` - build just the app. * `make app-flash` - flash just the app. `make app-flash` will automatically rebuild the app if it needs it. (There's no downside to reflashing the bootloader and partition table each time, if they haven't changed.) The Partition Table ------------------- Once 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. A single ESP32's flash can contain multiple apps, as well as many different kinds of data (calibration data, filesystems, parameter storage, etc). For this reason a partition table is flashed to offset 0x4000 in the flash. Each 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. The simplest way to use the partition table is to `make menuconfig` and choose one of the simple predefined partition tables: * "Single factory app, no OTA" * "Factory app, two OTA definitions" In 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. For more details about :doc:`partition tables ` and how to create custom variations, view the :doc:`documentation `.