Luc 39e06975f2 Update from refactoring branch
### Maintenance page
* Add add tab color for mobile view
* Add spellcheck off / autocorect off in input
* Add disconnect button when authenticate enabled
* Add Invalid user or password message when authentication failed

### Board support
* Add ESP32 S2 support
* Add ESP32 S3 support
* Add ESP32 C3 support

### ESP commands
* Add command 701 to control GCODE streaming
* Remove command 901 as duplicate
* Update command 420 to add more details
* Use text as default output
* All json on all commands for formated output

### Core
* Add benchmak function to check transfer speed (for test only-not production)
* Merge code for ESP3DLib support
* Add better printer display support (M117 / Serial TFT)
* Use ESP32 analogWrite instead of emulated one

### Modules
* Display
	* Refactor code
	* Remove SPI ILI 9341 / 9488 support as not suitable
      * Add ST7789 support (135x240 / 240x240)
* Filesystem
	* Bug fixes due to esp core updates
	* Better SD sharing mecanism
      * Better global FS management
* FTP
	* Add SD sharing support
	* Better global FS management
* GCODE Host
	* Add basic support for macro files
      * Add ESP command support
      * Use not blocking method to stream commands / handle response
* Notifications
	* Add IFTTT notification service
	* Add WebUI notification
	* Add ESP3D display notification
* WebDav
	* Add SD sharing support
	* Add bug fix from https://github.com/d-a-v/ESPWebDAV
	* Better global FS management
* Websocket
	* Add function to handle zombies connections
* WiFi
	* Fix connection to AP sometime fail
	* Fix low signal not diplayed in ESP420 even connected
	* Add AP Setup mode

### Libraries
* Update SDFat-2.0.6 to 2.1.2
* Update ESP32SSDP 1.1.1 to 1.2.0
* Update TFT_eSPI-1.4.11 to 2.4.61
* Update arduinoWebSockets-2.3.5 to 2.3.6
* Update esp8266-oled-ssd1306-4.0.0 to 4.3.0
* Remove lvgl support

### Tools
* Add I2C scanner script
* Add python script to simulate/stress printer serial communication

### PlatformIO
 * Use latest 4.4.0 Espressif32 release (ESP32-arduino core 2.0.3)
 * Add fix for Flash more than 4MB
 * Add Esp32 S2/S3/C3 env
 * Add ESP32-ST7789 / esp32-TTGO_T_Display env
2022-06-01 14:56:57 +08:00

1.4 KiB

.. include:: /header.rst 
:github_url: |github_link_base|/porting/log.md

Logging

LVGL has a built-in Log module to inform the user about what is happening in the library.

Log level

To enable logging, set LV_USE_LOG 1 in lv_conf.h and set LV_LOG_LEVEL to one of the following values:

  • LV_LOG_LEVEL_TRACE A lot of logs to give detailed information
  • LV_LOG_LEVEL_INFO Log important events
  • LV_LOG_LEVEL_WARN Log if something unwanted happened but didn't cause a problem
  • LV_LOG_LEVEL_ERROR Only critical issues, where the system may fail
  • LV_LOG_LEVEL_USER Only user messages
  • LV_LOG_LEVEL_NONE Do not log anything

The events which have a higher level than the set log level will be logged too. E.g. if you LV_LOG_LEVEL_WARN, errors will be also logged.

Printing logs

Logging with printf

If your system supports printf, you just need to enable LV_LOG_PRINTF in lv_conf.h to send the logs with printf.

Custom log function

If you can't use printf or want to use a custom function to log, you can register a "logger" callback with lv_log_register_print_cb().

For example:

void my_log_cb(const char * buf)
{
  serial_send(buf, strlen(buf));
}

...


lv_log_register_print_cb(my_log_cb);

Add logs

You can also use the log module via the LV_LOG_TRACE/INFO/WARN/ERROR/USER(text) functions.