Transfer build options from README to docs (#1860)
* Transfer build options from README to docs, fixes #1830 * reference tls, u8g, ucg module configuration
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Marcel Stör
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README.md
52
README.md
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@ -43,10 +43,9 @@ wifi.sta.config("SSID", "password")
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# Documentation
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The entire [NodeMCU documentation](https://nodemcu.readthedocs.io) is maintained right in this repository at [/docs](docs). The fact that the API documentation is mainted in the same repository as the code that *provides* the API ensures consistency between the two. With every commit the documentation is rebuilt by Read the Docs and thus transformed from terse Markdown into a nicely browsable HTML site at [https://nodemcu.readthedocs.io](https://nodemcu.readthedocs.io).
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The entire [NodeMCU documentation](https://nodemcu.readthedocs.io) is maintained right in this repository at [/docs](docs). The fact that the API documentation is maintained in the same repository as the code that *provides* the API ensures consistency between the two. With every commit the documentation is rebuilt by Read the Docs and thus transformed from terse Markdown into a nicely browsable HTML site at [https://nodemcu.readthedocs.io](https://nodemcu.readthedocs.io).
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- How to [build the firmware](https://nodemcu.readthedocs.io/en/dev/en/build/)
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- How to [build the filesystem](https://nodemcu.readthedocs.io/en/dev/en/spiffs/)
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- How to [flash the firmware](https://nodemcu.readthedocs.io/en/dev/en/flash/)
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- How to [upload code and NodeMCU IDEs](https://nodemcu.readthedocs.io/en/dev/en/upload/)
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- API documentation for every module
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@ -66,52 +65,3 @@ See [https://nodemcu.readthedocs.io/en/dev/en/support/](https://nodemcu.readthed
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# License
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[MIT](https://github.com/nodemcu/nodemcu-firmware/blob/master/LICENSE) © [zeroday](https://github.com/NodeMCU)/[nodemcu.com](http://nodemcu.com/index_en.html)
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# Build Options
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The following sections explain some of the options you have if you want to [build your own NodeMCU firmware](http://nodemcu.readthedocs.io/en/dev/en/build/).
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### Select Modules
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Disable modules you won't be using to reduce firmware size and free up some RAM. The ESP8266 is quite limited in available RAM and running out of memory can cause a system panic. The default configuration is designed to run on all ESP modules including the 512 KB modules like ESP-01 and only includes general purpose interface modules which require at most two GPIO pins.
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Edit `app/include/user_modules.h` and comment-out the `#define` statement for modules you don't need. Example:
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```c
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...
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#define LUA_USE_MODULES_MQTT
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// #define LUA_USE_MODULES_COAP
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// #define LUA_USE_MODULES_U8G
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...
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```
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### Tag Your Build
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Identify your firmware builds by editing `app/include/user_version.h`
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```c
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#define NODE_VERSION "NodeMCU 2.0.0+myname"
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#ifndef BUILD_DATE
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#define BUILD_DATE "YYYYMMDD"
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#endif
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```
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### Set UART Bit Rate
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The initial baud rate at boot time is 115200bps. You can change this by
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editing `BIT_RATE_DEFAULT` in `app/include/user_config.h`:
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```c
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#define BIT_RATE_DEFAULT BIT_RATE_115200
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```
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Note that, by default, the firmware runs an auto-baudrate detection algorithm so that typing a few characters at boot time will cause
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the firmware to lock onto that baud rate (between 1200 and 230400).
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### Debugging
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To enable runtime debug messages to serial console edit `app/include/user_config.h`
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```c
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#define DEVELOP_VERSION
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```
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@ -1,14 +1,72 @@
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There are essentially three ways to build your NodeMCU firmware: cloud build service, Docker image, dedicated Linux environment (possibly VM).
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**Building manually**
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## Tools
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Note that the *default configuration in the C header files* (`user_config.h`, `user_modules.h`) is designed to run on all ESP modules including the 512 KB modules like ESP-01 and only includes general purpose interface modules which require at most two GPIO pins.
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## Cloud Build Service
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### Cloud Build Service
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NodeMCU "application developers" just need a ready-made firmware. There's a [cloud build service](http://nodemcu-build.com/) with a nice UI and configuration options for them.
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## Docker Image
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### Docker Image
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Occasional NodeMCU firmware hackers don't need full control over the complete tool chain. They might not want to setup a Linux VM with the build environment. Docker to the rescue. Give [Docker NodeMCU build](https://hub.docker.com/r/marcelstoer/nodemcu-build/) a try.
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## Linux Build Environment
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### Linux Build Environment
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NodeMCU firmware developers commit or contribute to the project on GitHub and might want to build their own full fledged build environment with the complete tool chain. There is a [post in the esp8266.com Wiki](http://www.esp8266.com/wiki/doku.php?id=toolchain#how_to_setup_a_vm_to_host_your_toolchain) that describes this.
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## Build Options
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The following sections explain some of the options you have if you want to build your own NodeMCU firmware.
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### Select Modules
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Disable modules you won't be using to reduce firmware size and free up some RAM. The ESP8266 is quite limited in available RAM and running out of memory can cause a system panic. The *default configuration* is designed to run on all ESP modules including the 512 KB modules like ESP-01 and only includes general purpose interface modules which require at most two GPIO pins.
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Edit `app/include/user_modules.h` and comment-out the `#define` statement for modules you don't need. Example:
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```c
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...
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#define LUA_USE_MODULES_MQTT
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// #define LUA_USE_MODULES_COAP
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// #define LUA_USE_MODULES_U8G
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...
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```
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### TLS/SSL Support
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To enable TLS support edit `app/include/user_config.h` and uncomment the following flag:
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```c
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//#define CLIENT_SSL_ENABLE
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```
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The complete configuration is stored in `app/include/user_mbedtls.h`. This is the file to edit if you build your own firmware and want to change mbed TLS behavior. See the [`tls` documentation](modules/tls.md) for details.
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### Debugging
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To enable runtime debug messages to serial console edit `app/include/user_config.h`
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```c
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#define DEVELOP_VERSION
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```
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### Set UART Bit Rate
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The initial baud rate at boot time is 115200bps. You can change this by
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editing `BIT_RATE_DEFAULT` in `app/include/user_config.h`:
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```c
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#define BIT_RATE_DEFAULT BIT_RATE_115200
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```
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Note that, by default, the firmware runs an auto-baudrate detection algorithm so that typing a few characters at boot time will cause
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the firmware to lock onto that baud rate (between 1200 and 230400).
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### Tag Your Build
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Identify your firmware builds by editing `app/include/user_version.h`
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```c
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#define NODE_VERSION "NodeMCU 2.0.0+myname"
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#ifndef BUILD_DATE
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#define BUILD_DATE "YYYYMMDD"
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#endif
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```
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### u8g Module Configuration
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Display drivers and embedded fonts are compiled into the firmware image based on the settings in `app/include/u8g_config.h`. See the [`u8g` documentation](modules/u8g.md#displays) for details.
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### ucg Module Configuration
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Display drivers and embedded fonts are compiled into the firmware image based on the settings in `app/include/ucg_config.h`. See the [`ucg` documentation](modules/ucg.md#displays) for details.
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@ -1,6 +1,7 @@
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# Extension Developer FAQ
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**# # # Work in Progress # # #**
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## Firmware build options
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[Building the firmware → Build Options](build.md#build-options) lists a few of the common parameters to customize your firmware *at build time*.
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## How does the non-OS SDK structure execution
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