diff --git a/.vscode/settings.json b/.vscode/settings.json
index 68cce31..a7469f3 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -4,7 +4,9 @@
     "files.associations": {
         "cstring": "cpp",
         "random": "cpp",
-        "system_error": "c"
+        "system_error": "c",
+        "*.tcc": "cpp",
+        "streambuf": "cpp"
     },
     "cmake.ignoreCMakeListsMissing": true
 }
\ No newline at end of file
diff --git a/SERVER/hc-12/hc-12.c b/SERVER/hc-12/hc-12.c
index 7098a8b..e34a1f8 100644
--- a/SERVER/hc-12/hc-12.c
+++ b/SERVER/hc-12/hc-12.c
@@ -189,6 +189,7 @@ int loop(int fd, CONF *conf, DATA *DATA)
                             }
 
                         }
+                        
                         // CO
                         if (strstr(receivedString, "CO")) {
 
@@ -246,6 +247,14 @@ int loop(int fd, CONF *conf, DATA *DATA)
 
                             printf("\n");
                         }
+                        // Boot Time
+                        if (strstr(receivedString, "Boot Time")) {
+                            if (1 == (sscanf(receivedString, "Boot Time: %llu seconds\n", &DATA->boot_time_))) {
+                                printf("Boot Time: %llu seconds\n", DATA->boot_time_);
+                            }
+
+                        }
+                        
                     }
 
                     receivedString[0] = '\0';
@@ -360,6 +369,7 @@ int main()
     data->co_1st = 1;
     data->co2_1st = 1;
     data->_time = 180;
+    data->boot_time_ = 0;
 
     redirect_stdout_to_file(logfd, "hc-12.log");
     pthread_mutex_init(&mutex, NULL); // 初始化互斥锁
diff --git a/SERVER/hc-12/hc-12.h b/SERVER/hc-12/hc-12.h
index 7c4c829..026b142 100644
--- a/SERVER/hc-12/hc-12.h
+++ b/SERVER/hc-12/hc-12.h
@@ -48,6 +48,9 @@ typedef struct DATA {
     float co2;
     float ch4_;
 
+    // boot time
+    long long unsigned int boot_time_;
+
     // 超过阈值次数
     int ds18b20_num;
     int ch4_num;
diff --git a/SOFTWARE-FreeRTOS/CMakeLists.txt b/SOFTWARE-FreeRTOS/CMakeLists.txt
index 06e4647..795b39a 100644
--- a/SOFTWARE-FreeRTOS/CMakeLists.txt
+++ b/SOFTWARE-FreeRTOS/CMakeLists.txt
@@ -42,6 +42,7 @@ target_Sources(main PRIVATE
         ${CMAKE_CURRENT_LIST_DIR}/Source/ZE07CO.cpp
         ${CMAKE_CURRENT_LIST_DIR}/Source/MHZ14B.cpp
         ${CMAKE_CURRENT_LIST_DIR}/Source/HC-12.cpp
+        ${CMAKE_CURRENT_LIST_DIR}/Source/boot_time.cpp
     )
 
 target_include_directories(main PRIVATE
@@ -76,6 +77,7 @@ target_link_libraries(
         hardware_pwm
         hardware_adc
         hardware_pio
+        hardware_timer
     )
 
 pico_enable_stdio_uart(main 1)
diff --git a/SOFTWARE-FreeRTOS/Source/boot_time.cpp b/SOFTWARE-FreeRTOS/Source/boot_time.cpp
new file mode 100644
index 0000000..3a0cf48
--- /dev/null
+++ b/SOFTWARE-FreeRTOS/Source/boot_time.cpp
@@ -0,0 +1,39 @@
+
+#include "common.hpp"
+#include "HC-12.hpp"
+#include "boot_time.hpp"
+
+
+void BOOT_TIME(void *pvParameters)
+{
+    (void)pvParameters;
+
+    _printTaskStackHighWaterMark("BOOT_TIME");
+
+    int _HC_12_SEND_NUM = 0;
+    char BOOT_TIME_TEMP[BUFER] = { 0 };
+
+
+    while (1) {
+        // 获取自开机以来的微秒数
+        uint64_t uptime_us = time_us_64();
+        uint64_t total_uptime_sec = uptime_us / 1000000;
+
+        // 打印开机秒数
+        printf("Boot Time: %llu seconds\n", total_uptime_sec);
+
+        {
+            _HC_12_SEND_NUM++;
+            if (_HC_12_SEND_NUM > 5) {
+                sprintf(BOOT_TIME_TEMP, "Boot Time: %llu seconds\n", total_uptime_sec);
+                _HC_12(BOOT_TIME_TEMP);
+                memset(BOOT_TIME_TEMP, 0, BUFER);
+                _HC_12_SEND_NUM = 0;
+            }
+            
+        }
+
+        _printTaskStackHighWaterMark("BOOT_TIME");
+        vTaskDelay(pdMS_TO_TICKS(1000)); // 每秒延迟
+    }
+}
diff --git a/SOFTWARE-FreeRTOS/Source/boot_time.hpp b/SOFTWARE-FreeRTOS/Source/boot_time.hpp
new file mode 100644
index 0000000..5f54315
--- /dev/null
+++ b/SOFTWARE-FreeRTOS/Source/boot_time.hpp
@@ -0,0 +1,17 @@
+#ifndef BOOT_TIME_H
+#define BOOT_TIME_H
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+#include "semphr.h"
+#include "queue.h"
+
+#include <cstring>
+#include "pico/stdlib.h"
+
+#define BUFER 256
+
+extern void BOOT_TIME(void *pvParameters);
+
+#endif
diff --git a/SOFTWARE-FreeRTOS/Source/main.cpp b/SOFTWARE-FreeRTOS/Source/main.cpp
index 2e1c998..80288a3 100644
--- a/SOFTWARE-FreeRTOS/Source/main.cpp
+++ b/SOFTWARE-FreeRTOS/Source/main.cpp
@@ -19,6 +19,7 @@
 #include "ZE07CO.hpp"
 #include "MHZ14B.hpp"
 #include "HC-12.hpp"
+#include "boot_time.hpp"
 
 #ifndef PICO_DEFAULT_LED_PIN
     #warning pio/hello_pio example requires a board with a regular LED
@@ -109,6 +110,7 @@ int main(int argc, char *argv[])
     TaskHandle_t CH4_xHandle = NULL;
     TaskHandle_t CO_xHandle = NULL;
     TaskHandle_t CO2_xHandle = NULL;
+    TaskHandle_t BOOT_TIME_xHandle = NULL;
 
 
     // 板载CPU温度
@@ -146,6 +148,12 @@ int main(int argc, char *argv[])
     if (xReturned == errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY) {
         printf("CO2() Task Error!");
     }
+
+    // Boot Time
+    xReturned = xTaskCreate(BOOT_TIME, "BOOT_TIME task", 512, NULL, tskIDLE_PRIORITY, &BOOT_TIME_xHandle);
+    if (xReturned == errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY) {
+        printf("CO2() Task Error!");
+    }
     
 
     vTaskStartScheduler();
diff --git a/SOFTWARE/Source/MAIN.cpp b/SOFTWARE/Source/MAIN.cpp
index c9f95c4..55cee90 100644
--- a/SOFTWARE/Source/MAIN.cpp
+++ b/SOFTWARE/Source/MAIN.cpp
@@ -304,6 +304,7 @@ int wifi_connect() {
     }
 }
 
+/*
 // 主程序
 int main(int argc, char *argv[]) {
     stdio_init_all();
@@ -349,10 +350,8 @@ int main(int argc, char *argv[]) {
     cyw43_arch_deinit();
     return 0;
 }
+*/
 
-
-
-/*
 int main(int argc, char *argv[])
 {
     stdio_init_all();
@@ -469,5 +468,4 @@ int main(int argc, char *argv[])
     }
 
     return 0;
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file