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Merge pull request #11 from adwuard/ed/lvgl-kb-fix

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fix: LVGL kb port, keycode ASCII hex mapping issue
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GNU 2025-04-02 22:42:36 -07:00 committed by GitHub
commit 55f7321cd2
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3 changed files with 131 additions and 19 deletions
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3
Code/picocalc_lvgl_graphics_demo/README.md
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@ -10,9 +10,8 @@ This repository provides a template demo application utilizing the LVGL graphics
- [x] Ported I2C keyboard functionality for LVGL.
- [x] Implemented SPI display support for LVGL.
- [x] Enabled bitmap driver flushing.
- [x] Enhanced keyboard event processing.
#### Todos
- [ ] eEnhance keyboard event processing.
## Build Instructions
```bash

116
Code/picocalc_lvgl_graphics_demo/lv_port_indev_picocalc_kb.c
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@ -112,18 +112,119 @@ static void keypad_read(lv_indev_t * indev_drv, lv_indev_data_t * data)
/*Get whether the a key is pressed and save the pressed key*/
int r = keypad_get_key();
uint32_t act_key = 0;
if (r > 0) {
printf("Key event %x\n", r);
uint32_t act_key = 0;
/*Translate the keys to LVGL control characters according to your key definitions*/
switch(r) {
case 0xb5:
/* Translate the keys to LVGL control characters according to your key definitions */
switch (r) {
case 0xb5: // Arrow Up
act_key = LV_KEY_NEXT;
break;
case 0xb6:
case 0xb6: // Arrow Down
act_key = LV_KEY_PREV;
break;
case 0xb4: // Arrow Left
case 0xb7: // Arrow Right
printf("WARN: ARROW Left/Right key not mapped\n");
act_key = 0;
break;
// Special Keys
// Row 1
case 0x81: case 0x82: case 0x83: case 0x84: case 0x85:
case 0x86: case 0x87: case 0x88: case 0x89: case 0x90:// F1-F10 Keys
printf("WARN: Function keys not mapped\n");
act_key = 0;
break;
// Row 2
case 0xB1: // ESC
act_key = LV_KEY_ESC;
break;
case 0x09: // TAB
printf("WARN: Tab key not mapped\n");
act_key = 0;
break;
case 0xC1: // Caps Lock
printf("WARN: CapLock key not mapped\n");
act_key = 0;
break;
case 0xD4: // DEL
act_key = LV_KEY_DEL;
break;
case 0x08: // Backspace
act_key = LV_KEY_BACKSPACE;
break;
// Row 2 Layer2
case 0xD0: // brk
printf("WARN: Brk key not mapped\n");
act_key = 0;
break;
case 0xD2: // Home
act_key = LV_KEY_HOME;
break;
case 0xD5: // End
act_key = LV_KEY_END;
break;
// Row 3
case 0x60: case 0x2F: case 0x5C: case 0x2D: case 0x3D:
case 0x5B: case 0x5D: // `/\-=[] Keys
act_key = r;
break;
// Row 3 Layer2
case 0x7E: act_key = '~'; break;
case 0x3F: act_key = '?'; break;
case 0x7C: act_key = '|'; break;
case 0x5F: act_key = '_'; break;
case 0x2B: act_key = '+'; break;
case 0x7B: act_key = '{'; break;
case 0x7D: act_key = '}'; break;
// Row 4
case 0x30: case 0x31: case 0x32: case 0x33: case 0x34:
case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: // 0-9 Keys
act_key = r;
break;
// Row 4 Layer2
case 0x21: case 0x40: case 0x23: case 0x24: case 0x25:
case 0x5E: case 0x26: case 0x2A: case 0x28: case 0x29: // !@#$%^&*() Keys
act_key = r;
break;
// Row 5 Layer2
case 0xD1: // Insert
printf("WARN: Insert key not mapped\n");
act_key = 0;
break;
// Row 7 Layer 2
case 0x3C: act_key = '<'; break;
case 0x3E: act_key = '>'; break;
// Row 8
case 0x3B: case 0x27: case 0x3A: case 0x22: // ;:'"" Keys
act_key = r;
break;
case 0xA5: // CTL
printf("WARN: CTL key not mapped\n");
act_key = 0;
break;
case 0x20: // SPACE
act_key = r;
break;
case 0xA1: // ALT
printf("WARN: ALT key not mapped\n");
act_key = 0;
break;
case 0xA2: case 0xA3: // RIGHT/LEFT SHIFT
break;
default:
act_key = r;
break;
@ -133,8 +234,7 @@ static void keypad_read(lv_indev_t * indev_drv, lv_indev_data_t * data)
data->key = act_key;
last_key = act_key;
pending_release = true;
}
else {
} else {
data->state = LV_INDEV_STATE_RELEASED;
data->key = 0;
}

31
Code/picocalc_lvgl_graphics_demo/main.c
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@ -29,6 +29,16 @@
const unsigned int LEDPIN = 25;
// The event handler
static void textarea_event_handler(lv_event_t *e) {
lv_obj_t *textarea = lv_event_get_target(e);
printf("Textarea: '%s'\n", lv_textarea_get_text(textarea));
}
int main()
{
// Initialize standard I/O
@ -56,14 +66,17 @@ int main()
// Create a screen
lv_obj_t *screen = lv_obj_create(NULL);
// Create a text box
lv_obj_t *textbox = lv_textarea_create(screen);
lv_obj_set_size(textbox, 200, 50); // Set size of the text box
lv_obj_align(textbox, LV_ALIGN_CENTER, 0, 0); // Center the text box on the screen
// The textarea
lv_obj_t *input = lv_textarea_create(screen);
lv_obj_set_width(input, 280);
lv_obj_set_height(input, LV_SIZE_CONTENT); /// 20
lv_obj_center(input);
// Enable keyboard input for the text box
lv_textarea_set_placeholder_text(textbox, "Enter text...");
lv_textarea_set_one_line(textbox, true); // Set to single-line mode
lv_textarea_set_placeholder_text(input, "Input:");
lv_textarea_set_one_line(input, true);
lv_obj_set_style_anim_time(input, 5000, LV_PART_CURSOR|LV_STATE_FOCUSED);
// Textarea event handler
lv_obj_add_event_cb(input, textarea_event_handler, LV_EVENT_READY, input);
// Load the screen
lv_scr_load(screen);
@ -73,7 +86,7 @@ int main()
while (1)
{
lv_timer_handler();
lv_tick_inc(5); // Increment LVGL tick by 5 milliseconds
sleep_ms(1); // Sleep for 5 milliseconds}
lv_tick_inc(20); // Increment LVGL tick by 5 milliseconds
sleep_ms(5); // Sleep for 5 milliseconds}
}
}