dsx2016/lcd1602atest
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Add LCD1602A I2C test with SoftSPI touch and LVGL.

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PCF8574 backpack on SDA=GPIO22/SCL=GPIO27, demo/hello/clear/backlight UI, and flashable firmware/cyd package.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
DESKTOP-PUHFO60\dsx2016
2026-10-23 14:25:53 +08:00
commit a4c7d54d3e
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src/ui.cpp Normal file
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#include "ui.h"
#include "lcd.h"
#include "pins.h"
#include <Arduino.h>
#include <lvgl.h>
#include <stdio.h>
static constexpr uint32_t COL_BG = 0x0A1016;
static constexpr uint32_t COL_INK = 0xEAF0F6;
static constexpr uint32_t COL_MUTED = 0x7A8B9C;
static constexpr uint32_t COL_BTN = 0x243140;
static constexpr uint32_t COL_ON = 0x1B5E4A;
static constexpr uint32_t COL_ACCENT = 0x7CDBFF;
static constexpr uint32_t COL_DIM = 0x3A4656;
static constexpr uint32_t COL_ERR = 0xC62828;
static lv_obj_t *lbl_title;
static lv_obj_t *lbl_pin;
static lv_obj_t *lbl_status;
static lv_obj_t *lbl_line0;
static lv_obj_t *lbl_line1;
static lv_obj_t *btn_demo;
static lv_obj_t *lbl_demo;
static lv_obj_t *btn_hello;
static lv_obj_t *btn_clear;
static lv_obj_t *btn_bl;
static lv_obj_t *lbl_bl;
static uint8_t g_demo_idx = 0;
static void style_btn(lv_obj_t *btn, uint32_t bg) {
lv_obj_set_style_radius(btn, 10, 0);
lv_obj_set_style_bg_color(btn, lv_color_hex(bg), 0);
lv_obj_set_style_bg_opa(btn, LV_OPA_COVER, 0);
lv_obj_set_style_shadow_width(btn, 0, 0);
lv_obj_set_style_border_width(btn, 0, 0);
lv_obj_set_style_pad_all(btn, 0, 0);
}
static lv_obj_t *make_btn(lv_obj_t *parent, const char *txt, int16_t x,
int16_t y, int16_t w, int16_t h, lv_event_cb_t cb,
lv_obj_t **out_lbl) {
lv_obj_t *btn = lv_button_create(parent);
lv_obj_set_size(btn, w, h);
lv_obj_align(btn, LV_ALIGN_TOP_LEFT, x, y);
style_btn(btn, COL_BTN);
lv_obj_add_event_cb(btn, cb, LV_EVENT_CLICKED, nullptr);
lv_obj_t *lbl = lv_label_create(btn);
lv_label_set_text(lbl, txt);
lv_obj_set_style_text_color(lbl, lv_color_hex(COL_INK), 0);
lv_obj_set_style_text_font(lbl, &lv_font_montserrat_16, 0);
lv_obj_center(lbl);
if (out_lbl) {
*out_lbl = lbl;
}
return btn;
}
void ui_refresh_lcd() {
char l0[LCD_COLS + 1];
char l1[LCD_COLS + 1];
lcd_get_line(0, l0, sizeof(l0));
lcd_get_line(1, l1, sizeof(l1));
if (lbl_line0) {
lv_label_set_text_fmt(lbl_line0, "[%s]", l0);
}
if (lbl_line1) {
lv_label_set_text_fmt(lbl_line1, "[%s]", l1);
}
if (lbl_status) {
if (lcd_ok()) {
lv_label_set_text_fmt(lbl_status, "OK addr 0x%02X", lcd_addr());
lv_obj_set_style_text_color(lbl_status, lv_color_hex(COL_ON), 0);
} else {
lv_label_set_text(lbl_status, "FAIL no PCF8574");
lv_obj_set_style_text_color(lbl_status, lv_color_hex(COL_ERR), 0);
}
}
if (lbl_bl) {
lv_label_set_text(lbl_bl, lcd_backlight() ? "BL OFF" : "BL ON");
}
if (btn_bl) {
style_btn(btn_bl, lcd_backlight() ? COL_ON : COL_DIM);
}
if (lbl_demo) {
lv_label_set_text_fmt(lbl_demo, "Demo %u/%u",
(unsigned)(g_demo_idx % lcd_demo_count() + 1),
(unsigned)lcd_demo_count());
}
}
static void on_demo(lv_event_t *e) {
if (lv_event_get_code(e) != LV_EVENT_CLICKED) {
return;
}
lcd_demo(g_demo_idx);
g_demo_idx = (uint8_t)((g_demo_idx + 1) % lcd_demo_count());
ui_refresh_lcd();
}
static void on_hello(lv_event_t *e) {
if (lv_event_get_code(e) != LV_EVENT_CLICKED) {
return;
}
lcd_set_backlight(true);
lcd_set_line(0, "Hello World!");
lcd_set_line(1, "LCD1602A");
ui_refresh_lcd();
}
static void on_clear(lv_event_t *e) {
if (lv_event_get_code(e) != LV_EVENT_CLICKED) {
return;
}
lcd_clear();
ui_refresh_lcd();
}
static void on_bl(lv_event_t *e) {
if (lv_event_get_code(e) != LV_EVENT_CLICKED) {
return;
}
lcd_set_backlight(!lcd_backlight());
ui_refresh_lcd();
}
void ui_create() {
lv_obj_t *scr = lv_screen_active();
lv_obj_set_style_bg_color(scr, lv_color_hex(COL_BG), 0);
lv_obj_set_style_bg_opa(scr, LV_OPA_COVER, 0);
lbl_title = lv_label_create(scr);
lv_label_set_text(lbl_title, "LCD1602A");
lv_obj_set_style_text_color(lbl_title, lv_color_hex(COL_INK), 0);
lv_obj_set_style_text_font(lbl_title, &lv_font_montserrat_28, 0);
lv_obj_align(lbl_title, LV_ALIGN_TOP_MID, 0, 4);
lbl_pin = lv_label_create(scr);
lv_label_set_text_fmt(lbl_pin, "I2C SDA%d SCL%d PCF8574", LCD_I2C_SDA_PIN,
LCD_I2C_SCL_PIN);
lv_obj_set_style_text_color(lbl_pin, lv_color_hex(COL_MUTED), 0);
lv_obj_set_style_text_font(lbl_pin, &lv_font_montserrat_14, 0);
lv_obj_align(lbl_pin, LV_ALIGN_TOP_MID, 0, 36);
lbl_status = lv_label_create(scr);
lv_label_set_text(lbl_status, "...");
lv_obj_set_style_text_font(lbl_status, &lv_font_montserrat_14, 0);
lv_obj_align(lbl_status, LV_ALIGN_TOP_MID, 0, 54);
lbl_line0 = lv_label_create(scr);
lv_label_set_text(lbl_line0, "[ ]");
lv_obj_set_style_text_color(lbl_line0, lv_color_hex(COL_ACCENT), 0);
lv_obj_set_style_text_font(lbl_line0, &lv_font_montserrat_18, 0);
lv_obj_align(lbl_line0, LV_ALIGN_TOP_MID, 0, 78);
lbl_line1 = lv_label_create(scr);
lv_label_set_text(lbl_line1, "[ ]");
lv_obj_set_style_text_color(lbl_line1, lv_color_hex(COL_ACCENT), 0);
lv_obj_set_style_text_font(lbl_line1, &lv_font_montserrat_18, 0);
lv_obj_align(lbl_line1, LV_ALIGN_TOP_MID, 0, 104);
const int16_t gap = 8;
const int16_t bw = (UI_HOR_RES - 48 - gap) / 2;
const int16_t bx0 = 24;
const int16_t row0 = 140;
const int16_t row1 = 188;
btn_demo = make_btn(scr, "Demo", bx0, row0, bw, 40, on_demo, &lbl_demo);
btn_hello = make_btn(scr, "Hello", bx0 + bw + gap, row0, bw, 40, on_hello,
nullptr);
btn_clear =
make_btn(scr, "Clear", bx0, row1, bw, 40, on_clear, nullptr);
btn_bl = make_btn(scr, "BL OFF", bx0 + bw + gap, row1, bw, 40, on_bl, &lbl_bl);
(void)btn_demo;
(void)btn_hello;
(void)btn_clear;
ui_refresh_lcd();
}