https://github.com/lvgl/lv_port_maixduino
Maixduino GUI project with LVGL
https://github.com/lvgl/lv_port_maixduino
Last synced: over 1 year ago
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Maixduino GUI project with LVGL
- Host: GitHub
- URL: https://github.com/lvgl/lv_port_maixduino
- Owner: lvgl
- License: mit
- Created: 2019-04-14T13:12:54.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2019-07-15T10:42:25.000Z (about 7 years ago)
- Last Synced: 2025-04-03T13:45:55.923Z (over 1 year ago)
- Language: C
- Homepage:
- Size: 4.99 MB
- Stars: 10
- Watchers: 5
- Forks: 4
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# LittlevGL Arduino library
This library allows to use LittlevGL (v6.x) as an Arduino library. Library can be installed via Arduino IDE Library Manager or as an .ZIP library.
## Example
There is simple example which uses https://github.com/Bodmer/TFT_eSPI library as an TFT driver to simplify testing. To get all this to work you have to setup TFT_eSPI to work with your TFT display type via editing the `User_Setup.h` file in TFT_eSPI library folder, or by selecting your own configurtion in the `User_Setup_Select.h` file in TFT_eSPI library folder.
LittlevGL library has its own configuration file in `lv_conf.h` file, which is locatd in LittlevGL library folder. Please get in mind to check that corresponding resolutions in LVGL configuration match the ones in TFT_eSPI and with physical resolution of your display.
Example result should look like this:
Tested with:
* My own ESP32 board, module ESP32 Wroom
* PC OS: Linux, Ubuntu 18.04 LTS
* IDE: Arduino IDE 1.8.9
* ESP32 Core: 1.0.2
## Debugging
In case of trouble there are debug information inside LVGL. In the `ESP32_TFT_eSPI` example there is `my_print` method, which allow to send this debug information to the serial interface. To enable this feature you have to edit `lv_conf.h` file and enable logging in section `log settings`:
```c
/*Log settings*/
#define USE_LV_LOG 1 /*Enable/disable the log module*/
#if USE_LV_LOG
/* How important log should be added:
* 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 caused problem
* LV_LOG_LEVEL_ERROR Only critical issue, when the system may fail
*/
# define LV_LOG_LEVEL LV_LOG_LEVEL_TRACE
```
After enabling log module and setting LV_LOG_LEVEL accordingly the output log is sent to he `Serial` port @ 115200 Bd. After each line sent there is 100ms delay to allow the serial transfer to finish. This delay can be commentd out in `my_print` method.