feat: 添加 UI 组件支持，整合界面元素和全局变量管理

components/ui/vars.c

@@ -0,0 +1,57 @@
+#include <string.h>
+#include "vars.h"
+
+char air_temperature[100] = { 0 };
+
+const char *get_var_air_temperature() {
+    return air_temperature;
+}
+
+void set_var_air_temperature(const char *value) {
+    strncpy(air_temperature, value, sizeof(air_temperature) / sizeof(char));
+    air_temperature[sizeof(air_temperature) / sizeof(char) - 1] = 0;
+}
+
+char air_humidity[100] = { 0 };
+
+const char *get_var_air_humidity() {
+    return air_humidity;
+}
+
+void set_var_air_humidity(const char *value) {
+    strncpy(air_humidity, value, sizeof(air_humidity) / sizeof(char));
+    air_humidity[sizeof(air_humidity) / sizeof(char) - 1] = 0;
+}
+
+
+char soil_moisture[100] = { 0 };
+
+const char *get_var_soil_moisture() {
+    return soil_moisture;
+}
+
+void set_var_soil_moisture(const char *value) {
+    strncpy(soil_moisture, value, sizeof(soil_moisture) / sizeof(char));
+    soil_moisture[sizeof(soil_moisture) / sizeof(char) - 1] = 0;
+}
+
+char light_intensity[100] = { 0 };
+
+const char *get_var_light_intensity() {
+    return light_intensity;
+}
+
+void set_var_light_intensity(const char *value) {
+    strncpy(light_intensity, value, sizeof(light_intensity) / sizeof(char));
+    light_intensity[sizeof(light_intensity) / sizeof(char) - 1] = 0;
+}
+
+int32_t air_temperature_int;
+
+int32_t get_var_air_temperature_int() {
+    return air_temperature_int;
+}
+
+void set_var_air_temperature_int(int32_t value) {
+    air_temperature_int = value;
+}