alex/esp-idf
alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity
Espressif IoT Development Framework. Official development framework for Espressif SoCs. https://docs.espressif.com/projects/esp-idf/en/stable/esp32/index.html
9,000 Commits 20 Branches 148 Tags 384 MiB
C 95.6%
Python 2.1%
C++ 1.2%
CMake 0.7%
Assembly 0.3%
1be207adb4
Go to file
Angus Gratton 1be207adb4 Merge branch 'bugfix/idfpy_msys_powershell' into 'master' 
idf.py: Don't expect "_" env. variable to be available from PowerShell

Closes #79

See merge request idf/esp-idf!5119
2019-06-13 09:23:43 +08:00
.github github: Sync PRs to JIRA as well 2019-03-14 14:29:46 +11:00
components Merge branch 'bugfix/fix_some_wps_bugs' into 'master' 2019-06-12 14:35:52 +08:00
docs Doc/translate idf about 2019-06-12 19:17:04 +08:00
examples cmake: use new signature form of target_link_library to link components 2019-06-11 18:09:26 +08:00
make Rename Kconfig options (root) 2019-05-21 09:09:01 +02:00
tools idf.py: Don't expect "_" env. variable to be available from PowerShell 2019-06-12 08:04:28 +02:00
.editorconfig cmake: Use cmake_lint project, tidy up all CMake source files 2018-04-30 09:59:20 +10:00
.flake8 Merge branch 'update/mfg_util' into 'master' 2019-04-04 14:40:33 +08:00
.gitignore Introduce separate fonts used by blockdiag, sequdiag, actdiag, nwdiag, rackdiag and packetdiag for Chinese and English version of documentation 2019-05-06 13:19:58 +08:00
.gitlab-ci.yml ci: don't do idf_tools.py install in target_test stage 2019-06-07 01:17:29 +08:00
.gitmodules aws_iot: moving AWS IoT to independent repository 2019-04-12 05:36:05 +00:00
.readthedocs.yml docs: Add mqtt submodule to RTD build configuration. Now any submodule included in documentation build by Doxygen should be included in this file 2019-05-28 20:11:21 +08:00
.travis.yml Check the Python coding style 2018-11-26 15:02:27 +01:00
add_path.sh add_path.sh: Fix reuse the script 2018-11-28 11:08:28 +11:00
CMakeLists.txt cmake: use new signature form of target_link_library to link components 2019-06-11 18:09:26 +08:00
CONTRIBUTING.rst docs: This is a quick reference of more than a dozen and-ons and extensions prepared over the last two years to add contents, improve look & feel and cut on maintenance of the ESP-IDF documentation. 2019-02-17 20:32:50 +01:00
Kconfig Rename Kconfig options (components/esp32) 2019-05-21 09:09:01 +02:00
LICENSE Initial public version 2016-08-17 23:08:22 +08:00
README.md Docs: Renamed download links to clearly state they are to download documentation. Fixed incorrectly linked documentation build badge. 2018-09-17 01:19:45 +00:00
requirements.txt idf.py: Add support for action specific options 2019-06-03 13:07:02 +02:00
sdkconfig.rename Rename Kconfig options (root) 2019-05-21 09:09:01 +02:00

README.md

Espressif IoT Development Framework

Documentation Status

ESP-IDF is the official development framework for the ESP32 chip.

Developing With ESP-IDF

Setting Up ESP-IDF

See setup guides for detailed instructions to set up the ESP-IDF:

Finding a Project

As well as the esp-idf-template project mentioned in Getting Started, ESP-IDF comes with some example projects in the examples directory.

Once you've found the project you want to work with, change to its directory and you can configure and build it.

To start your own project based on an example, copy the example project directory outside of the ESP-IDF directory.

Quick Reference

See the Getting Started guide links above for a detailed setup guide. This is a quick reference for common commands when working with ESP-IDF projects:

Configuring the Project

make menuconfig

  • Opens a text-based configuration menu for the project.
  • Use up & down arrow keys to navigate the menu.
  • Use Enter key to go into a submenu, Escape key to go out or to exit.
  • Type ? to see a help screen. Enter key exits the help screen.
  • Use Space key, or Y and N keys to enable (Yes) and disable (No) configuration items with checkboxes "[*]"
  • Pressing ? while highlighting a configuration item displays help about that item.
  • Type / to search the configuration items.

Once done configuring, press Escape multiple times to exit and say "Yes" to save the new configuration when prompted.

Compiling the Project

make -j4 all

... will compile app, bootloader and generate a partition table based on the config.

NOTE: The -j4 option causes make to run 4 parallel jobs. This is much faster than the default single job. The recommended number to pass to this option is -j(number of CPUs + 1).

Flashing the Project

When the build finishes, it will print a command line to use esptool.py to flash the chip. However you can also do this automatically by running:

make -j4 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.

Viewing Serial Output

The make monitor target uses the idf_monitor tool to display serial output from the ESP32. idf_monitor also has a range of features to decode crash output and interact with the device. Check the documentation page for details.

Exit the monitor by typing Ctrl-].

To build, flash and monitor output in one pass, you can run:

make -j4 flash monitor

Compiling & Flashing Only 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 any source files have changed.

(In normal development there's no downside to reflashing the bootloader and partition table each time, if they haven't changed.)

Parallel Builds

ESP-IDF supports compiling multiple files in parallel, so all of the above commands can be run as make -jN where N is the number of parallel make processes to run (generally N should be equal to the number of CPU cores in your system, plus one.)

Multiple make functions can be combined into one. For example: to build the app & bootloader using 5 jobs in parallel, then flash everything, and then display serial output from the ESP32 run:

make -j5 flash monitor

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 0x8000 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 partition tables and how to create custom variations, view the docs/en/api-guides/partition-tables.rst file.

Erasing Flash

The make flash target does not erase the entire flash contents. However it is sometimes useful to set the device back to a totally erased state, particularly when making partition table changes or OTA app updates. To erase the entire flash, run make erase_flash.

This can be combined with other targets, ie make erase_flash flash will erase everything and then re-flash the new app, bootloader and partition table.

Resources