add rtc

Power_Pico/Core/Inc/rtc.h

@@ -41,6 +41,8 @@ extern RTC_HandleTypeDef hrtc;
 void MX_RTC_Init(void);
 
 /* USER CODE BEGIN Prototypes */
+void SetReferenceTime(void);
+void GetElapsedTime_HMS(uint8_t *hours, uint8_t *minutes, uint8_t *seconds);
 
 /* USER CODE END Prototypes */
 

Power_Pico/Core/Src/rtc.c

@@ -102,4 +102,59 @@ void HAL_RTC_MspDeInit(RTC_HandleTypeDef* rtcHandle)
 
 /* USER CODE BEGIN 1 */
 
+// 存储参考时间的时间戳（秒数）
+static uint32_t s_ReferenceTimestamp = 0;
+
+/**
+ * @brief  设定参考时间：从现在开始计时
+ *         调用此函数后，计时器清零，重新开始
+ */
+void SetReferenceTime(void)
+{
+    RTC_TimeTypeDef sTime = {0};
+    RTC_DateTypeDef sDate = {0};
+
+    // 获取当前RTC时间
+    HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
+    HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
+
+    // 转换为总秒数（简化计算，仅用于计时差）
+    s_ReferenceTimestamp =
+        (sDate.Year * 365 + sDate.Month * 31 + sDate.Date) * 24 * 3600 +
+        sTime.Hours * 3600 +
+        sTime.Minutes * 60 +
+        sTime.Seconds;
+}
+
+/**
+ * @brief  获取从参考时间到现在经过的时间（时:分:秒）
+ * @param  hours   [out] 经过的小时数
+ * @param  minutes [out] 经过的分钟数
+ * @param  seconds [out] 经过的秒数
+ */
+void GetElapsedTime_HMS(uint8_t *hours, uint8_t *minutes, uint8_t *seconds)
+{
+    RTC_TimeTypeDef sTime = {0};
+    RTC_DateTypeDef sDate = {0};
+    uint32_t currentTimestamp, elapsed;
+
+    // 获取当前时间并转为秒数
+    HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN);
+    HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN);
+
+    uint32_t nowSeconds =
+        (sDate.Year * 365 + sDate.Month * 31 + sDate.Date) * 24 * 3600 +
+        sTime.Hours * 3600 +
+        sTime.Minutes * 60 +
+        sTime.Seconds;
+
+    // 计算经过的秒数
+    elapsed = nowSeconds - s_ReferenceTimestamp;
+
+    // 转换为 时:分:秒
+    *seconds = elapsed % 60;
+    *minutes = (elapsed / 60) % 60;
+    *hours   = (elapsed / 3600);
+}
+
 /* USER CODE END 1 */

Power_Pico/User/GUI/screens/ui_mainPage.c

@@ -33,7 +33,7 @@ static void full_screen_refresh(void) {
 
 static void set_val_cur_label(float voltage, float current)
 {
-    char buf[10];
+    char buf[16];
     sprintf(buf, "%.2f", voltage);
     lv_label_set_text(ui_LabelValt, buf);
     if(current >= 1000000.0) {
@@ -63,6 +63,40 @@ static void set_val_cur_label(float voltage, float current)
         lv_label_set_text(ui_LabelCur, buf);
         lv_label_set_text(ui_LabelUnitCur, "uA");
     }
+    // set power
+    float power = voltage * current; // in uW
+    if(power >= 1000000.0) {
+        power = power / 1000000.0;
+        sprintf(buf, "%.2f", power);
+        lv_label_set_text(ui_LabelEnerge, buf);
+        lv_label_set_text(ui_LabelUnitEnerge, "W");
+    }
+    else if(power >= 1000.0) {
+        power = power / 1000.0;
+        if(power >= 100.0) {
+            sprintf(buf, "%.1f", power);
+        }
+        else {
+            sprintf(buf, "%.2f", power);
+        }
+        lv_label_set_text(ui_LabelEnerge, buf);
+        lv_label_set_text(ui_LabelUnitEnerge, "mW");
+    }
+    else {
+        if(power >= 100.0) {
+            sprintf(buf, "%.1f", power);
+        }
+        else {
+            sprintf(buf, "%.2f", power);
+        }
+        lv_label_set_text(ui_LabelEnerge, buf);
+        lv_label_set_text(ui_LabelUnitEnerge, "uW");
+    }
+    // set time
+    uint8_t hours = 0, minutes = 0, seconds = 0;
+    GetElapsedTime_HMS(&hours, &minutes, &seconds);
+    sprintf(buf, "%02d:%02d:%02d", hours, minutes, seconds);
+    lv_label_set_text(ui_LabelTime, buf);
 }
 
 // event funtions

Power_Pico/User/Tasks/Src/user_HardwareInitTask.c

@@ -6,6 +6,7 @@
 #include "tim.h"
 #include "stm32f4xx_it.h"
 #include "adc.h"
+#include "rtc.h"
 
 // user
 #include "user_TasksInit.h"
@@ -82,6 +83,9 @@ void HardwareInitTask(void *argument)
     // lcd
     // done in lvgl disp init
 
+    // rtc
+    SetReferenceTime();
+
     // ui
     // LVGL and disp init
     lv_init();