feat: 添加AHT30温湿度传感器驱动及显示功能

实现AHT30温湿度传感器的I2C驱动
新增传感器任务定期读取数据
优化LCD显示界面，增加温湿度显示
添加I2C硬件和软件扫描功能
修复I2C引脚配置问题

Core/Src/freertos.c

@@ -33,6 +33,8 @@
 #include "multi_button.h"
 #include "spi_st7735s.h"
 #include "stdio.h"
+#include "bsp_aht30.h"
+#include "i2c.h"
 
 /* USER CODE END Includes */
 
@@ -110,6 +112,13 @@ const osThreadAttr_t button_attributes = {
   .stack_size = 512 * 4,
   .priority = (osPriority_t) osPriorityRealtime2,
 };
+/* Definitions for sensor */
+osThreadId_t sensorHandle;
+const osThreadAttr_t sensor_attributes = {
+  .name = "sensor",
+  .stack_size = 1024 * 4,
+  .priority = (osPriority_t) osPriorityNormal,
+};
 
 /* Private function prototypes -----------------------------------------------*/
 /* USER CODE BEGIN FunctionPrototypes */
@@ -127,6 +136,7 @@ void StartDefaultTask(void *argument);
 extern void wifi_task_mqtt(void *argument);
 void LCD_Task(void *argument);
 void button_task(void *argument);
+void sensorTask(void *argument);
 
 void MX_FREERTOS_Init(void); /* (MISRA C 2004 rule 8.1) */
 
@@ -169,6 +179,9 @@ void MX_FREERTOS_Init(void) {
   /* creation of button */
   buttonHandle = osThreadNew(button_task, NULL, &button_attributes);
 
+  /* creation of sensor */
+  sensorHandle = osThreadNew(sensorTask, NULL, &sensor_attributes);
+
   /* USER CODE BEGIN RTOS_THREADS */
   /* add threads, ... */
   /* USER CODE END RTOS_THREADS */
@@ -279,13 +292,13 @@ void LCD_Task(void *argument)
       ST7735_FillScreen(bg_color);
       ST7735_WriteString(2, 2, "Temp & Humi", &Font_7x10, text_color, bg_color);
 
-      // 显示温度
-      snprintf(display_str, sizeof(display_str), "T: %.1f C", sensor_data.temperature);
-      ST7735_WriteString(5, 20, display_str, &Font_11x18, text_color, bg_color);
+      // 显示温度（橙色 - 国际标准温度色）
+      snprintf(display_str, sizeof(display_str), "T: %.2f C", sensor_data.temperature);
+      ST7735_WriteString(5, 20, display_str, &Font_11x18, ST7735_ORANGE, bg_color);
 
-      // 显示湿度
-      snprintf(display_str, sizeof(display_str), "H: %.1f %%", sensor_data.humidity);
-      ST7735_WriteString(5, 45, display_str, &Font_11x18, text_color, bg_color);
+      // 显示湿度（青色 - 国际标准湿度色）
+      snprintf(display_str, sizeof(display_str), "H: %.2f %%", sensor_data.humidity);
+      ST7735_WriteString(5, 45, display_str, &Font_11x18, ST7735_CYAN, bg_color);
       break;
 
     case LCD_PAGE_FOOD_WEIGHT:
@@ -357,7 +370,7 @@ void LCD_Task(void *argument)
       }
     } else {
       // 其他页面：1秒刷新一次
-      osDelay(1000);
+      osDelay(2000);
     }
   }
   /* USER CODE END LCD_Task */
@@ -384,6 +397,65 @@ void button_task(void *argument)
   /* USER CODE END button_task */
 }
 
+/* USER CODE BEGIN Header_sensorTask */
+/**
+* @brief Function implementing the sensor thread.
+* @param argument: Not used
+* @retval None
+*/
+/* USER CODE END Header_sensorTask */
+void sensorTask(void *argument)
+{
+  /* USER CODE BEGIN sensorTask */
+  elog_i(TAG, "启动传感器任务");
+
+  // 扫描I2C设备（调试）
+  AHT30_ScanI2C(&hi2c1);
+
+  // 如果硬件I2C扫描失败，尝试软件I2C
+  uint8_t found = 0;
+  for (uint8_t addr = 1; addr < 128; addr++) {
+    if (HAL_I2C_IsDeviceReady(&hi2c1, addr << 1, 1, 50) == HAL_OK) {
+      found = 1;
+      break;
+    }
+  }
+
+  if (!found) {
+    elog_w(TAG, "硬件I2C未发现设备，尝试软件I2C扫描...");
+    AHT30_ScanI2C_Soft();
+  }
+
+  // 初始化AHT30温湿度传感器
+  elog_i(TAG, "初始化AHT30温湿度传感器");
+  if (AHT30_Init(&hi2c1)) {
+    elog_i(TAG, "AHT30初始化成功");
+  } else {
+    elog_e(TAG, "AHT30初始化失败");
+  }
+
+  /* Infinite loop */
+  for(;;)
+  {
+    // 读取温湿度数据
+    AHT30_Data_t aht30_data;
+    if (AHT30_ReadData(&aht30_data)) {
+      // 数据读取成功，更新sensor_data
+      sensor_data.temperature = aht30_data.temperature;
+      sensor_data.humidity = aht30_data.humidity;
+
+      elog_d(TAG, "温湿度数据 - 温度: %.2f℃, 湿度: %.2f%%",
+             aht30_data.temperature, aht30_data.humidity);
+    } else {
+      elog_w(TAG, "AHT30数据读取失败");
+    }
+
+    // 每2秒读取一次
+    osDelay(2000);
+  }
+  /* USER CODE END sensorTask */
+}
+
 /* Private application code --------------------------------------------------*/
 /* USER CODE BEGIN Application */
 

Core/Src/i2c.c

@@ -74,6 +74,7 @@ void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
     GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+    GPIO_InitStruct.Pull = GPIO_PULLUP;
     HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
     /* I2C1 clock enable */