From ed8013ccc2121fdfe56eb0d6e5b3cad1ba6baa04 Mon Sep 17 00:00:00 2001 From: Angus Gratton Date: Fri, 27 Jul 2018 17:21:38 +1000 Subject: [PATCH] README: Add version-specific links Make it clearer how the README fits in with the docs. --- README.md | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/README.md b/README.md index e2ed414ff4..42d8f45b4d 100644 --- a/README.md +++ b/README.md @@ -4,22 +4,27 @@ ESP-IDF is the official development framework for the [ESP32](https://espressif.com/en/products/hardware/esp32/overview) chip. -# Developing With the ESP-IDF +# Developing With ESP-IDF ## Setting Up ESP-IDF See setup guides for detailed instructions to set up the ESP-IDF: -* [Windows Setup Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/windows-setup.html) -* [Mac OS Setup Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/macos-setup.html) -* [Linux Setup Guide](https://docs.espressif.com/projects/esp-idf/en/latest/get-started/linux-setup.html) +* [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/) ## Finding a Project -As well as the [esp-idf-template](https://github.com/espressif/esp-idf-template) project mentioned in the setup guide, ESP-IDF comes with some example projects in the [examples](examples) directory. +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: + ## Configuring the Project `make menuconfig` @@ -36,15 +41,17 @@ Once done configuring, press Escape multiple times to exit and say "Yes" to save ## Compiling the Project -`make all` +`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 `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` +`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`. @@ -56,24 +63,24 @@ The `make monitor` target uses the [idf_monitor tool](https://docs.espressif.com Exit the monitor by typing Ctrl-]. -To flash and monitor output in one pass, you can run: +To build, flash and monitor output in one pass, you can run: -`make flash monitor` +`make -j4 flash monitor` -## Compiling & Flashing Just the App +## 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 it needs it. +`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 or one more than the number of CPU cores in your system.) +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: