L VD / LvGL_F746NG

Boilerplate library to get started with LvGL on STM DISCO F746NG board. Adapted from https://os.mbed.com/users/JohnnyK/code/DISCO-F746NG_MbedOs_LvGL_example/

Dependencies:   BSP_DISCO_F746NG

Dependents:   LvGL_F746NG_test

lvgl_f746ng.cpp@0:cffa136e7f8f, 2020-09-08 (annotated)

Committer:
elelthvd
Date:
Tue Sep 08 05:23:58 2020 +0000
Revision:
0:cffa136e7f8f
Child:
1:a23fffad1321
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elelthvd 0:cffa136e7f8f 1 /**
elelthvd 0:cffa136e7f8f 2 * @file lvgl_f746ng.cpp
elelthvd 0:cffa136e7f8f 3 *
elelthvd 0:cffa136e7f8f 4 */
elelthvd 0:cffa136e7f8f 5
elelthvd 0:cffa136e7f8f 6 /*********************
elelthvd 0:cffa136e7f8f 7 * INCLUDES
elelthvd 0:cffa136e7f8f 8 *********************/
elelthvd 0:cffa136e7f8f 9 #include "mbed.h"
elelthvd 0:cffa136e7f8f 10 #include "lvgl_f746ng.h"
elelthvd 0:cffa136e7f8f 11 #include <cstdio>
elelthvd 0:cffa136e7f8f 12 #include "../lvgl/lvgl.h"
elelthvd 0:cffa136e7f8f 13 #include "lv_port_disp.h"
elelthvd 0:cffa136e7f8f 14 #include "lv_port_indev.h"
elelthvd 0:cffa136e7f8f 15
elelthvd 0:cffa136e7f8f 16 /*********************
elelthvd 0:cffa136e7f8f 17 * DEFINES
elelthvd 0:cffa136e7f8f 18 *********************/
elelthvd 0:cffa136e7f8f 19
elelthvd 0:cffa136e7f8f 20 /**********************
elelthvd 0:cffa136e7f8f 21 * TYPEDEFS
elelthvd 0:cffa136e7f8f 22 **********************/
elelthvd 0:cffa136e7f8f 23
elelthvd 0:cffa136e7f8f 24 /**********************
elelthvd 0:cffa136e7f8f 25 * STATIC PROTOTYPES
elelthvd 0:cffa136e7f8f 26 **********************/
elelthvd 0:cffa136e7f8f 27 void lv_ticker_func(void);
elelthvd 0:cffa136e7f8f 28
elelthvd 0:cffa136e7f8f 29 /**********************
elelthvd 0:cffa136e7f8f 30 * STATIC VARIABLES
elelthvd 0:cffa136e7f8f 31 **********************/
elelthvd 0:cffa136e7f8f 32 Ticker lvgl_ticker; // mbed Ticker for lvgl
elelthvd 0:cffa136e7f8f 33
elelthvd 0:cffa136e7f8f 34 /**********************
elelthvd 0:cffa136e7f8f 35 * MACROS
elelthvd 0:cffa136e7f8f 36 **********************/
elelthvd 0:cffa136e7f8f 37
elelthvd 0:cffa136e7f8f 38 /**********************
elelthvd 0:cffa136e7f8f 39 * GLOBAL FUNCTIONS
elelthvd 0:cffa136e7f8f 40 **********************/
elelthvd 0:cffa136e7f8f 41
elelthvd 0:cffa136e7f8f 42 /* Initialize lvgl + target port specifics + mbed ticker. */
elelthvd 0:cffa136e7f8f 43 void lvgl_f746ng_init()
elelthvd 0:cffa136e7f8f 44 {
elelthvd 0:cffa136e7f8f 45 debug("lvgl_f746ng_init\r\n");
elelthvd 0:cffa136e7f8f 46 lv_init(); //Initialize the LittlevGL
elelthvd 0:cffa136e7f8f 47 lv_port_disp_init(); //Initialize diplay
elelthvd 0:cffa136e7f8f 48 lv_port_indev_init(); //Initialize touchpad
elelthvd 0:cffa136e7f8f 49 lvgl_ticker.attach(callback(&lv_ticker_func), 10ms); //Attach callback to ticker
elelthvd 0:cffa136e7f8f 50 }
elelthvd 0:cffa136e7f8f 51
elelthvd 0:cffa136e7f8f 52 /**********************
elelthvd 0:cffa136e7f8f 53 * STATIC FUNCTIONS
elelthvd 0:cffa136e7f8f 54 **********************/
elelthvd 0:cffa136e7f8f 55 /* Callback function for lvgl timing. */
elelthvd 0:cffa136e7f8f 56 void lv_ticker_func()
elelthvd 0:cffa136e7f8f 57 {
elelthvd 0:cffa136e7f8f 58 //Call lv_tick_inc(x) every x milliseconds in a Timer or Task (x should be between 1 and 10).
elelthvd 0:cffa136e7f8f 59 //It is required for the internal timing of LittlevGL.
elelthvd 0:cffa136e7f8f 60 lv_tick_inc(10);
elelthvd 0:cffa136e7f8f 61 //Call lv_task_handler() periodically every few milliseconds.
elelthvd 0:cffa136e7f8f 62 //It will redraw the screen if required, handle input devices etc.
elelthvd 0:cffa136e7f8f 63 lv_task_handler();
elelthvd 0:cffa136e7f8f 64 }