feat: working version

Author: electricalgorithm

.gitignore

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+build/*
+.vscode/*

CMakeLists.txt

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+set(BOARD esp32s3_touch_lcd_1_28/esp32s3/procpu)
+
+cmake_minimum_required(VERSION 3.20.0)
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(Esp32SmartWatch)
+
+target_sources(app PRIVATE src/main.c)
+target_include_directories(app PRIVATE inc)

LICENSE

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+# Important for LVGL to work.
+CONFIG_MAIN_STACK_SIZE=4096
+CONFIG_LV_MEM_CUSTOM=y
+CONFIG_LV_Z_MEM_POOL_SIZE=16384
+
+# Display Configurations
+CONFIG_DISPLAY=y
+CONFIG_DISPLAY_LOG_LEVEL_ERR=y
+
+# Log Configurations
+CONFIG_LOG=y
+CONFIG_LV_USE_LOG=y
+
+# Shell Configurations
+CONFIG_SHELL=y
+CONFIG_LV_Z_SHELL=y
+CONFIG_PWM_SHELL=y
+
+# LVGL Configurations
+CONFIG_LVGL=y
+CONFIG_LV_USE_LABEL=y
+CONFIG_LV_USE_BTN=y
+
+# PWM Configurations
+CONFIG_PWM=y

README.md

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+/*
+ * Copyright (c) 2018 Jan Van Winkel <[email protected]>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/device.h>
+#include <zephyr/devicetree.h>
+#include <zephyr/drivers/display.h>
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/drivers/pwm.h>
+#include <lvgl.h>
+#include <stdio.h>
+#include <string.h>
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <lvgl_input_device.h>
+
+#define LOG_LEVEL	CONFIG_LOG_DEFAULT_LEVEL
+LOG_MODULE_REGISTER(SmartWatch_OS);
+
+static void lv_btn_click_callback(lv_event_t *e) {
+	LOG_INF("Button clicked");
+}
+
+int main(void) {
+
+    // Check if the display device is ready.
+	const struct device *display_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display));
+	if (!device_is_ready(display_dev)) {
+		LOG_ERR("Display device is not ready, exiting...");
+		return 0;
+	}
+    LOG_INF("Display device is ready.");
+
+    const struct pwm_dt_spec backlight = PWM_DT_SPEC_GET_BY_IDX(DT_NODELABEL(pwm_lcd0), 0);
+    if (!pwm_is_ready_dt(&backlight)) {
+        LOG_ERR("PWM device is not ready, exiting...");
+        return 0;
+    }
+    LOG_INF("PWM device is ready.");
+
+    // Log PWM backlight information.
+    LOG_INF("PWM device: %s", backlight.dev->name);
+    LOG_INF("PWM channel: %d", backlight.channel);
+    LOG_INF("PWM period: %d", backlight.period);
+    LOG_INF("PWM flags: %d", backlight.flags);
+
+    // Initialize the PWM device.
+    int ret = pwm_set_dt(&backlight, 500, 250);
+    if (ret < 0) {
+        LOG_ERR("Failed to set PWM pulse, exiting...");
+        return 0;
+    }
+
+    // Initialize the display device with initial GUI.
+	if (IS_ENABLED(CONFIG_LV_Z_POINTER_INPUT)) {
+
+        // Create a button.
+		lv_obj_t *hello_world_button = lv_btn_create(lv_scr_act());
+		lv_obj_align(hello_world_button, LV_ALIGN_CENTER, 0, -15);
+		lv_obj_add_event_cb(hello_world_button,
+                            lv_btn_click_callback,
+                            LV_EVENT_CLICKED, NULL);
+		// Create a label for the button.
+        lv_obj_t *hello_world_label = lv_label_create(hello_world_button);
+        lv_label_set_text(hello_world_label, "Hello world!");
+	    lv_obj_align(hello_world_label, LV_ALIGN_CENTER, 0, 0);
+        
+        LOG_INF("LVGL initialized.");
+	}
+
+    lv_task_handler();
+    display_blanking_off(display_dev);
+
+	while (1) {
+		lv_task_handler();
+		k_sleep(K_MSEC(10));
+	}
+}