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Merge pull request #4 from MikroElektronika/ivan.ruzavin/lvgl-keyboar…
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…d-demo

Updated LVGL Keyboard Demo
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@StrahinjaJacimovic
StrahinjaJacimovic authored Dec 31, 2024
2 parents 8e1876c + a0fe787 commit 8a23d0b
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2 changes: 1 addition & 1 deletion demos/sdk/demolvglkeyboard/project/README.md
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This Demo shows how to use Keyboard component of LVGL Tool in NECTOStudio IDE. First it displays the intro screen and then it shows application screen.

- **Authors** : [MikroE](https://github.com/MikroElektronika)
- **Version** : 3.0.0
- **Version** : 3.1.0
- **Date** : ${COPYRIGHT_YEAR}.

## Hardware Support
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6 changes: 6 additions & 0 deletions demos/sdk/demolvglkeyboard/project/changelog.md
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## Version 3.0.0

- Initial release

## Version 3.1.0

- Updated the Demo part for Planet Debug
- Added more text to display with the Keyboard
- Added imitation for Keyboard Button press events
200 changes: 189 additions & 11 deletions demos/sdk/demolvglkeyboard/project/main.c
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/**
* @file main.c
* @brief Main function for Untitled6 LVGL Designer Application.
* @brief Main function for LVGL Keyboard Designer Application.
*/

/**
Expand Down Expand Up @@ -41,6 +41,177 @@ void application_init()

extern uint8_t check_flag;

#if IS_PD_SETUP
// Macro that is used to define Enter Button position
#define ENTER_CHARACTER_BUTTON 22
// Macro that is used to define Space Bar Button position
#define SPACE_CHARACTER_BUTTON 37

// Function to simulate button clicks on the keyboard
void simulate_button_clicks(lv_obj_t *keyboard, const char *text) {
// Map for lower cased keyboard
char btn_map_lower[] = " qwertyuiop asdfghjkl _-zxcvbnm.,:";
// Map for upper cased keyboard
char btn_map_upper[] = " QWERTYUIOP ASDFGHJKL _-ZXCVBNM.,:";
// Map for number keyboard
char btn_map_number[] = "1234567890";
// Map for special case keyboard
char btn_map_special[] = "1234567890 +-/";
// Flag for found character
bool char_found;

for (size_t i = 0; text[i] != '\0'; i++) {
char c = text[i];
char_found = false;

// Case if we need to press Space Bar
if (c == ' ') {
// Set Keyboard Button to be in pressed state
lv_btnmatrix_set_btn_ctrl(keyboard, SPACE_CHARACTER_BUTTON, LV_BTNMATRIX_CTRL_CHECKED);
// Pass the selected button value to the keyboard object
lv_btnmatrix_set_selected_btn(keyboard, SPACE_CHARACTER_BUTTON);
// Display the changes
lv_task_handler();
// Trigger the Keyboard Click event
lv_event_send(keyboard, LV_EVENT_CLICKED, (void *)(uintptr_t)SPACE_CHARACTER_BUTTON);
// Set Keyboard Button to be in released state
lv_btnmatrix_clear_btn_ctrl(keyboard, SPACE_CHARACTER_BUTTON, LV_BTNMATRIX_CTRL_CHECKED);
// Display the changes
lv_task_handler();
continue;
}

// Case if we need to press Enter Button
if (c == '\n') {
// Set Keyboard Button to be in pressed state
lv_btnmatrix_set_btn_ctrl(keyboard, ENTER_CHARACTER_BUTTON, LV_BTNMATRIX_CTRL_CHECKED);
// Pass the selected button value to the keyboard object
lv_btnmatrix_set_selected_btn(keyboard, ENTER_CHARACTER_BUTTON);
// Display the changes
lv_task_handler();
// Trigger the Keyboard Click event
lv_event_send(keyboard, LV_EVENT_CLICKED, (void *)(uintptr_t)ENTER_CHARACTER_BUTTON);
// Set Keyboard Button to be in released state
lv_btnmatrix_clear_btn_ctrl(keyboard, ENTER_CHARACTER_BUTTON, LV_BTNMATRIX_CTRL_CHECKED);
// Display the changes
lv_task_handler();
continue;
}

for (int j = 0; btn_map_lower[j] != '\0'; j++) {
printf_me("%c %c\n", btn_map_lower[j], c);
if (btn_map_lower[j] == c) {
// Set Keyboard Button to be in pressed state
lv_btnmatrix_set_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Pass the selected button value to the keyboard object
lv_btnmatrix_set_selected_btn(keyboard, j);
// Display the changes
lv_task_handler();
// Trigger the Keyboard Click event
lv_event_send(keyboard, LV_EVENT_CLICKED, (void *)(uintptr_t)j);
// Set Keyboard Button to be in released state
lv_btnmatrix_clear_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Display the changes
lv_task_handler();
char_found = true;
break;
}
}

// If in previous itterations char was not found, try different Keyboard Mode
if (!char_found) {
// Set the Keyboard to Upper Cased Text Mode
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_TEXT_UPPER);
// Display the changes
lv_task_handler();
for (int j = 0; btn_map_upper[j] != '\0'; j++) {
if (btn_map_upper[j] == c) {
// Set Keyboard Button to be in pressed state
lv_btnmatrix_set_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Pass the selected button value to the keyboard object
lv_btnmatrix_set_selected_btn(keyboard, j);
// Display the changes
lv_task_handler();
// Trigger the Keyboard Click event
lv_event_send(keyboard, LV_EVENT_CLICKED, (void *)(uintptr_t)j);
// Set Keyboard Button to be in released state
lv_btnmatrix_clear_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Display the changes
lv_task_handler();
char_found = true;
break;
}
}
// Return the Keyboard to Lower Cased Text Mode
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_TEXT_LOWER);
// Display the changes
lv_task_handler();
}

// If in previous itterations char was not found, try different Keyboard Mode
if (!char_found) {
// Set the Keyboard to Special Cased Text Mode
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_SPECIAL);
// Display the changes
lv_task_handler();
for (int j = 0; btn_map_special[j] != '\0'; j++) {
if (btn_map_special[j] == c) {
// Set Keyboard Button to be in pressed state
lv_btnmatrix_set_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Pass the selected button value to the keyboard object
lv_btnmatrix_set_selected_btn(keyboard, j);
// Display the changes
lv_task_handler();
// Trigger the Keyboard Click event
lv_event_send(keyboard, LV_EVENT_CLICKED, (void *)(uintptr_t)j);
// Set Keyboard Button to be in released state
lv_btnmatrix_clear_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Display the changes
lv_task_handler();
char_found = true;
break;
}
}
// Return the Keyboard to Lower Cased Text Mode
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_TEXT_LOWER);
// Display the changes
lv_task_handler();
}

// If in previous itterations char was not found, try different Keyboard Mode
if (!char_found) {
// Set the Keyboard to Number Mode
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_NUMBER);
// Display the changes
lv_task_handler();
for (int j = 0; btn_map_number[j] != '\0'; j++) {
printf_me("%c %c\n", btn_map_number[j], c);
if (btn_map_number[j] == c) {
// Set Keyboard Button to be in pressed state
lv_btnmatrix_set_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Pass the selected button value to the keyboard object
lv_btnmatrix_set_selected_btn(keyboard, j);
// Display the changes
lv_task_handler();
// Trigger the Keyboard Click event
lv_event_send(keyboard, LV_EVENT_CLICKED, (void *)(uintptr_t)j);
// Set Keyboard Button to be in released state
lv_btnmatrix_clear_btn_ctrl(keyboard, j, LV_BTNMATRIX_CTRL_CHECKED);
// Display the changes
lv_task_handler();
char_found = true;
break;
}
}
// Return the Keyboard to Lower Cased Text Mode
lv_keyboard_set_mode(keyboard, LV_KEYBOARD_MODE_TEXT_LOWER);
// Display the changes
lv_task_handler();
}
}
}
#endif

int main(void)
{
/* Do not remove this line or clock might not be set correctly. */
Expand All @@ -49,7 +220,9 @@ int main(void)
#endif

#if IS_PD_SETUP
char restart[] = "MIKROE LVGL Keyboard demo...";
char line_1[] = "You are looking at MIKROE LVGL Keyboard Demo.\n\nIf you want to find more Demos, visit:\n";
char github[] = "https://github.com/MikroElektronika/necto_demos";
char line_2[] = "\n\nThis demo will restart in 2 seconds...";
#else
char restart[] = "Restarting Demo...";
#endif
Expand All @@ -65,12 +238,19 @@ int main(void)
lv_event_send(lvgl_second_screen_ui.textarea_0, LV_EVENT_FOCUSED, NULL);
lv_textarea_set_text(lvgl_second_screen_ui.textarea_0, "");

#if IS_PD_SETUP
lv_textarea_set_text(lvgl_second_screen_ui.textarea_0, "");
lv_task_handler();
Delay_ms(3000);
show_second_screen();
lv_task_handler();
#endif

/////////////////////////////LVGL specific timing routine (DO NOT DELETE)/////////////////////////
while (1)
{
#if !IS_PD_SETUP
if (check_flag) {
#endif
for (uint8_t counter = 0; counter < sizeof(restart); counter++) {
lv_textarea_add_char(lvgl_second_screen_ui.textarea_0, restart[counter]);
lv_task_handler();
Expand All @@ -80,15 +260,13 @@ int main(void)
show_main_screen();
lv_textarea_set_text(lvgl_second_screen_ui.textarea_0, "");
check_flag = 0;
#if !IS_PD_SETUP
}
#endif
lv_task_handler();
Delay_ms(1);

#if IS_PD_SETUP
Delay_ms(3000);
show_second_screen();
#else
simulate_button_clicks(lvgl_second_screen_ui.keyboard_0, line_1);
simulate_button_clicks(lvgl_second_screen_ui.keyboard_0, github);
simulate_button_clicks(lvgl_second_screen_ui.keyboard_0, line_2);
Delay_ms(2000);
lv_textarea_set_text(lvgl_second_screen_ui.textarea_0, "");
#endif
}
/////////////////////////////////////////////////////////////////////////////////////////////////
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2 changes: 1 addition & 1 deletion demos/sdk/demolvglkeyboard/project/manifest.json
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"display_name": "LVGL Keyboard Demo",
"name": "mikroe.demo.sdk.lvgl.keyboard",
"type": "project",
"version": "3.0.0",
"version": "3.1.0",
"demo": true,
"link_github": "https://github.com/MikroElektronika/necto_demos/tree/main/demos/sdk/demolvglkeyboard/project"
}

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