113 lines
5.5 KiB
Markdown
113 lines
5.5 KiB
Markdown
# Espressif IoT Development Framework
|
|
|
|
* [中文版](./README_CN.md)
|
|
|
|
ESP-IDF is the official development framework for the [ESP32](https://espressif.com/en/products/hardware/esp32/overview) chip.
|
|
|
|
# Developing With ESP-IDF
|
|
|
|
## Setting Up ESP-IDF
|
|
|
|
See setup guides for detailed instructions to set up the ESP-IDF:
|
|
|
|
* [Getting Started Guide for the stable ESP-IDF version](https://docs.espressif.com/projects/esp-idf/en/stable/get-started/)
|
|
* [Getting Started Guide for the latest (master branch) ESP-IDF version](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/)
|
|
|
|
### Non-GitHub forks
|
|
|
|
ESP-IDF uses relative locations as its submodules URLs ([.gitmodules](.gitmodules)). So they link to GitHub.
|
|
If ESP-IDF is forked to a Git repository which is not on GitHub, you will need to run the script
|
|
[tools/set-submodules-to-github.sh](tools/set-submodules-to-github.sh) after git clone.
|
|
The script sets absolute URLs for all submodules, allowing `git submodule update --init --recursive` to complete.
|
|
If cloning ESP-IDF from GitHub, this step is not needed.
|
|
|
|
## Finding a Project
|
|
|
|
As well as the [esp-idf-template](https://github.com/espressif/esp-idf-template) project mentioned in Getting Started, ESP-IDF comes with some example projects in the [examples](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:
|
|
|
|
## Setup Build Environment
|
|
|
|
(See Getting Started guide for a full list of required steps with details.)
|
|
|
|
* Install host build dependencies mentioned in Getting Started guide.
|
|
* Add `tools/` directory to the PATH
|
|
* Run `python -m pip install -r requirements.txt` to install Python dependencies
|
|
|
|
## Configuring the Project
|
|
|
|
`idf.py 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
|
|
|
|
`idf.py build`
|
|
|
|
... will compile app, bootloader and generate a partition table based on the config.
|
|
|
|
## 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:
|
|
|
|
`idf.py -p PORT flash`
|
|
|
|
Replace PORT with the name of your serial port (like `COM3` on Windows, `/dev/ttyUSB0` on Linux, or `/dev/cu.usbserial-X` on MacOS. If the `-p` option is left out, `idf.py flash` will try to flash the first available serial port.
|
|
|
|
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 `idf.py menuconfig`.
|
|
|
|
You don't need to run `idf.py build` before running `idf.py flash`, `idf.py flash` will automatically rebuild anything which needs it.
|
|
|
|
## Viewing Serial Output
|
|
|
|
The `idf.py monitor` target uses the [idf_monitor tool](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/idf-monitor.html) 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](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/idf-monitor.html).
|
|
|
|
Exit the monitor by typing Ctrl-].
|
|
|
|
To build, flash and monitor output in one pass, you can run:
|
|
|
|
`idf.py 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:
|
|
|
|
* `idf.py app` - build just the app.
|
|
* `idf.py app-flash` - flash just the app.
|
|
|
|
`idf.py 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.)
|
|
|
|
## Erasing Flash
|
|
|
|
The `idf.py 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 `idf.py erase_flash`.
|
|
|
|
This can be combined with other targets, ie `idf.py -p PORT erase_flash flash` will erase everything and then re-flash the new app, bootloader and partition table.
|
|
|
|
# Resources
|
|
|
|
* Documentation for the latest version: https://docs.espressif.com/projects/esp-idf/. This documentation is built from the [docs directory](docs) of this repository.
|
|
|
|
* The [esp32.com forum](https://esp32.com/) is a place to ask questions and find community resources.
|
|
|
|
* [Check the Issues section on github](https://github.com/espressif/esp-idf/issues) if you find a bug or have a feature request. Please check existing Issues before opening a new one.
|
|
|
|
* If you're interested in contributing to ESP-IDF, please check the [Contributions Guide](https://docs.espressif.com/projects/esp-idf/en/latest/contribute/index.html).
|
|
|
|
|