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Merge pull request #5215 from mysterywolf/l475 

[lvgl][stm32l475] implement lvgl input driver
This commit is contained in:
guo 2021-10-23 11:22:19 +08:00 committed by GitHub
parent 0746772433 7cba0ea924
commit dd12843ed0
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 128 additions and 70 deletions
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104
bsp/stm32/stm32l475-atk-pandora/board/ports/lvgl/lv_demo.c
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@ -7,25 +7,50 @@
* Date Author Notes
* 2021-10-17 Meco Man First version
*/
#include <rtthread.h>
#include <lvgl.h>
#define DBG_TAG "LVGL"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#include <lv_port_indev.h>
#ifndef LV_THREAD_STACK_SIZE
#define LV_THREAD_STACK_SIZE 2048
#define LV_THREAD_STACK_SIZE 4096
#endif
#ifndef LV_THREAD_PRIO
#define LV_THREAD_PRIO (RT_THREAD_PRIORITY_MAX*2/3)
#endif
static void lv_example_get_started_1(void);
static void lv_example_get_started_3(void);
static void btn_event_cb(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * btn = lv_event_get_target(e);
if(code == LV_EVENT_CLICKED) {
static uint8_t cnt = 0;
cnt++;
/*Get the first child of the button which is the label and change its text*/
lv_obj_t * label = lv_obj_get_child(btn, 0);
lv_label_set_text_fmt(label, "WK_UP: %d", cnt);
}
}
static void lvgl_thread(void *parameter)
{
lv_example_get_started_1();
lv_example_get_started_3();
/*assign buttons to coordinates*/
const lv_point_t points_array[] = {{0,0},{0,0},{0,0},{70,35}};
lv_indev_set_button_points(button_indev, points_array);
lv_obj_t * btn = lv_btn_create(lv_scr_act()); /*Add a button the current screen*/
lv_obj_set_pos(btn, 10, 10); /*Set its position*/
lv_obj_set_size(btn, 120, 50); /*Set its size*/
lv_obj_add_event_cb(btn, btn_event_cb, LV_EVENT_ALL, NULL); /*Assign a callback to the button*/
lv_obj_t * label = lv_label_create(btn); /*Add a label to the button*/
lv_label_set_text(label, "WK_UP: 0"); /*Set the labels text*/
lv_obj_center(label);
while(1)
{
@ -38,70 +63,13 @@ static int lvgl_demo_init(void)
{
rt_thread_t tid;
tid = rt_thread_create("lvgl", lvgl_thread, RT_NULL, LV_THREAD_STACK_SIZE, LV_THREAD_PRIO, 0);
tid = rt_thread_create("LVGL", lvgl_thread, RT_NULL, LV_THREAD_STACK_SIZE, LV_THREAD_PRIO, 0);
if(tid == RT_NULL)
{
LOG_E("Fail to create 'LVGL' thread");
}
rt_thread_startup(tid);
return 0;
}
INIT_APP_EXPORT(lvgl_demo_init);
/* ------------------- demo1 ----------------------- */
static void btn_event_cb(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * btn = lv_event_get_target(e);
if(code == LV_EVENT_CLICKED) {
static uint8_t cnt = 0;
cnt++;
/*Get the first child of the button which is the label and change its text*/
lv_obj_t * label = lv_obj_get_child(btn, 0);
lv_label_set_text_fmt(label, "Button: %d", cnt);
}
}
/**
* Create a button with a label and react on click event.
*/
static void lv_example_get_started_1(void)
{
lv_obj_t * btn = lv_btn_create(lv_scr_act()); /*Add a button the current screen*/
lv_obj_set_pos(btn, 10, 10); /*Set its position*/
lv_obj_set_size(btn, 120, 50); /*Set its size*/
lv_obj_add_event_cb(btn, btn_event_cb, LV_EVENT_ALL, NULL); /*Assign a callback to the button*/
lv_obj_t * label = lv_label_create(btn); /*Add a label to the button*/
lv_label_set_text(label, "Button"); /*Set the labels text*/
lv_obj_center(label);
}
/* ------------------- demo3 ----------------------- */
static lv_obj_t * label;
static void slider_event_cb(lv_event_t * e)
{
lv_obj_t * slider = lv_event_get_target(e);
/*Refresh the text*/
lv_label_set_text_fmt(label, "%d", (int)lv_slider_get_value(slider));
lv_obj_align_to(label, slider, LV_ALIGN_OUT_TOP_MID, 0, -15); /*Align top of the slider*/
}
/**
* Create a slider and write its value on a label.
*/
static void lv_example_get_started_3(void)
{
/*Create a slider in the center of the display*/
lv_obj_t * slider = lv_slider_create(lv_scr_act());
lv_obj_set_width(slider, 200); /*Set the width*/
lv_obj_center(slider); /*Align to the center of the parent (screen)*/
lv_obj_add_event_cb(slider, slider_event_cb, LV_EVENT_VALUE_CHANGED, NULL); /*Assign an event function*/
/*Create a label below the slider*/
label = lv_label_create(lv_scr_act());
lv_label_set_text(label, "0");
lv_obj_align_to(label, slider, LV_ALIGN_OUT_TOP_MID, 0, -15); /*Align top of the slider*/
}

4
bsp/stm32/stm32l475-atk-pandora/board/ports/lvgl/lv_port_disp.c
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@ -16,8 +16,8 @@
static lv_disp_draw_buf_t disp_buf;
/*Static or global buffer(s). The second buffer is optional*/
static lv_color_t buf_1[MY_DISP_HOR_RES * LCD_W /5];
static lv_color_t buf_2[MY_DISP_HOR_RES * LCD_W /5];
static lv_color_t buf_1[MY_DISP_HOR_RES * 10];
static lv_color_t buf_2[MY_DISP_HOR_RES * 10];
static lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/

86
bsp/stm32/stm32l475-atk-pandora/board/ports/lvgl/lv_port_indev.c
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@ -7,8 +7,94 @@
* Date Author Notes
* 2021-10-18 Meco Man The first version
*/
#include <lvgl.h>
#include <stdbool.h>
#include <rtdevice.h>
#include <drv_gpio.h>
#define BUTTON0_PIN GET_PIN(D, 10)
#define BUTTON1_PIN GET_PIN(D, 9)
#define BUTTON2_PIN GET_PIN(D, 8)
#define BUTTON_WKUP_PIN GET_PIN(C, 13)
/*Test if `id` button is pressed or not*/
static bool button_is_pressed(uint8_t id)
{
switch(id)
{
case 0:
if(rt_pin_read(BUTTON0_PIN) == PIN_LOW)
return true;
break;
case 1:
if(rt_pin_read(BUTTON1_PIN) == PIN_LOW)
return true;
break;
case 2:
if(rt_pin_read(BUTTON2_PIN) == PIN_LOW)
return true;
break;
case 3:
if(rt_pin_read(BUTTON_WKUP_PIN) == PIN_HIGH)
return true;
break;
}
return false;
}
static int8_t button_get_pressed_id(void)
{
uint8_t i;
/*Check to buttons see which is being pressed*/
for(i = 0; i < 4; i++)
{
/*Return the pressed button's ID*/
if(button_is_pressed(i))
{
return i;
}
}
/*No button pressed*/
return -1;
}
void button_read(lv_indev_drv_t * drv, lv_indev_data_t*data)
{
static uint32_t last_btn = 0; /*Store the last pressed button*/
int btn_pr = button_get_pressed_id(); /*Get the ID (0,1,2...) of the pressed button*/
if(btn_pr >= 0)
{ /*Is there a button press? (E.g. -1 indicated no button was pressed)*/
last_btn = btn_pr; /*Save the ID of the pressed button*/
data->state = LV_INDEV_STATE_PRESSED; /*Set the pressed state*/
}
else
{
data->state = LV_INDEV_STATE_RELEASED; /*Set the released state*/
}
data->btn_id = last_btn; /*Save the last button*/
}
lv_indev_t * button_indev;
void lv_port_indev_init(void)
{
static lv_indev_drv_t indev_drv;
/* Initialize the on-board buttons */
rt_pin_mode(BUTTON0_PIN, PIN_MODE_INPUT);
rt_pin_mode(BUTTON1_PIN, PIN_MODE_INPUT);
rt_pin_mode(BUTTON2_PIN, PIN_MODE_INPUT);
rt_pin_mode(BUTTON_WKUP_PIN, PIN_MODE_INPUT);
lv_indev_drv_init(&indev_drv); /*Basic initialization*/
indev_drv.type = LV_INDEV_TYPE_BUTTON;
indev_drv.read_cb = button_read;
/*Register the driver in LVGL and save the created input device object*/
button_indev = lv_indev_drv_register(&indev_drv);
}

4
bsp/stm32/stm32l475-atk-pandora/board/ports/lvgl/lv_port_indev.h
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@ -14,6 +14,10 @@
extern "C" {
#endif
#include <lv_hal_indev.h>
extern lv_indev_t * button_indev;
void lv_port_indev_init(void);
#ifdef __cplusplus