diff --git a/APP/peripheral_main.c b/APP/peripheral_main.c
index cd45e72..7b9ad81 100644
--- a/APP/peripheral_main.c
+++ b/APP/peripheral_main.c
@@ -128,8 +128,8 @@ int main(void)
     BSP_VBAT_Init();
     logDebug("VBAT init ok\n");
 
-    // BSP_Ml307r_Init();
-    // logDebug("BSP_M1307r ok\n");
+    BSP_Ml307r_Init();
+    logDebug("BSP_M1307r ok\n");
 
     BSP_KEY_Init(app_task_handler);
 
diff --git a/bsp/inc/bsp_adc.h b/bsp/inc/bsp_adc.h
index 7c9fe2a..0e1c01e 100644
--- a/bsp/inc/bsp_adc.h
+++ b/bsp/inc/bsp_adc.h
@@ -11,7 +11,13 @@
 #include "CH58x_common.h"
 #define VBAT_EVT_START (0x0001 << 2)
 
+#define VBAT_LOW_THRESHOLD 3.0f  // 电池电压低阈值，单位V
+
 void VBAT_ADC_Init(void);
 void BSP_VBAT_Init(void);
 
+
+void Send_Low_Battery_Message(float vbat);
+void Handle_Low_Battery(float vbat);
+
 #endif /* INCLUDE_BSP_ADC_H_ */
diff --git a/bsp/inc/bsp_ml307r.h b/bsp/inc/bsp_ml307r.h
index e63790c..8468ee1 100644
--- a/bsp/inc/bsp_ml307r.h
+++ b/bsp/inc/bsp_ml307r.h
@@ -16,7 +16,7 @@
 
 void BSP_Ml307r_Init(void);
 void Ml307r_Loop(void);
-
+void BSP_Module_Emergency_Send(uint8_t* data, uint8_t len);
 #endif //!@__BSP_ML307R_H__
 
 
diff --git a/bsp/src/bsp_adc.c b/bsp/src/bsp_adc.c
index 307d185..7287dd7 100644
--- a/bsp/src/bsp_adc.c
+++ b/bsp/src/bsp_adc.c
@@ -8,8 +8,15 @@
 #include "CONFIG.h"
 #include "log.h"
 
+#include "bsp_motor.h"
+#include "bsp_led.h"
+#include "bsp_ml307r.h"
+#include <string.h>
+
 signed short RoughCalib_Value = 0; // ADC粗调偏差值
 static tmosTaskID vbat_task_id = INVALID_TASK_ID;
+static uint8_t vbat_low_flag = 0;  // 电压过低标志
+
 void VBAT_ADC_Init(void)
 {
     // 功能引脚数字输入禁用寄存器
@@ -35,20 +42,111 @@ void ADC_GPIO_Init(void)
     R8_ADC_CFG |= RB_ADC_POWER_ON;
 }
 
+
+void Send_Low_Battery_Message(float vbat)
+{
+    char json_buffer[300];
+    char time_str[20] = {0};
+    snprintf(json_buffer, sizeof(json_buffer), 
+            "{"
+            "\"device\":{"
+                "\"id\":\"SCV001\","
+                "\"type\":\"SelfClosingValve\","
+                "\"time\":\"%s\""
+            "},"
+            "\"status\":\"closed\","
+            "\"fault\":{"
+                "\"lowBattery\":true,"
+                "\"commError\":false,"
+                "\"code\":1001"
+            "},"
+            "\"monitor\":{"
+                "\"pressure\":0.8,"
+                "\"voltage\":%.2f,"
+                "\"lowVoltage\":true"
+            "},"
+            "\"network\":{"
+                "\"sinr\":15.2,"
+                "\"rsrp\":-95.5,"
+                "\"signal\":4"
+            "},"
+            "\"standards\":{"
+                "\"iotId\":\"IoT-SCV-12345\""
+            "}"
+            "}", 
+            time_str, vbat);
+    BSP_Module_Emergency_Send((uint8_t*)json_buffer, strlen(json_buffer));
+    logDebug("Send low battery message: %s\n", json_buffer);
+}
+
+// 处理电池电压低事件
+void Handle_Low_Battery(float vbat)
+{
+    if (!vbat_low_flag) {
+        VALVE_CLOSE();
+        LED_VALVE_CLOSE;
+        Send_Low_Battery_Message(vbat);
+        vbat_low_flag = 1;
+        logDebug("Voltage is too low (%.2fV),Close valve\n", vbat);
+    }
+        LED_VBAT_OPEN;
+        DelayMs(100);
+}
+
 uint16_t VBAT_ProcessEvent(uint8_t task_id, uint16_t events)
 {
     if (events & VBAT_EVT_START)
     {
         uint16_t adc_vbat = 0;
         float vbat = 0;
-        ADC_GPIO_Init();
+        float IN_VBAT = 0;
+        // ADC_GPIO_Init();
+        // ADC_ChannelCfg(0);
+        // adc_vbat = ADC_ExcutSingleConver() + RoughCalib_Value;
+        // logDebug("adc_vbat =%d \n", adc_vbat);
+        // vbat = (adc_vbat/1024.0-1)*1.05;
+        // logDebug("vbat =%f \n", vbat);
+        // tmos_start_task(vbat_task_id, VBAT_EVT_START, MS1_TO_SYSTEM_TIME(1000*60));  //1000*60
+        uint8_t retry_count = 0;
+        uint8_t success = 0;
+        
+        while (retry_count < 3 && !success) {
+            ADC_GPIO_Init();
+            ADC_ChannelCfg(0);
+            adc_vbat = ADC_ExcutSingleConver() + RoughCalib_Value;
+            if (adc_vbat > 100 && adc_vbat < 6000) {
+                vbat = (adc_vbat/1024.0-1)*1.05;
+                IN_VBAT = vbat * 2;
+                logDebug("adc_vbat = %d, IN_VBAT = %.2f V\n", adc_vbat, IN_VBAT);
+                success = 1;
+            } else {
+                retry_count++;
+                DelayMs(10);
+                logDebug("ADC error %d/3\n", retry_count);
+            }
+        }
+        
+        if (success) {
+            if (IN_VBAT < VBAT_LOW_THRESHOLD) {
+                Handle_Low_Battery(IN_VBAT);
+            } else if (vbat_low_flag) {
+                vbat_low_flag = 0;
+                LED_VBAT_CLOSE;
+                logDebug("Voltage is normal (%.2fV)\n", IN_VBAT);
+            }
+        } else {
+            logDebug("Voltage measurement failed\n");
+            if (!vbat_low_flag) {
+                IN_VBAT = 1.0f; 
+                Handle_Low_Battery(IN_VBAT);
+            }
+        }
 
-        ADC_ChannelCfg(0);
-        adc_vbat = ADC_ExcutSingleConver() + RoughCalib_Value;
-        logDebug("adc_vbat =%d \n", adc_vbat);
-        vbat = (adc_vbat/1024.0-1)*1.05;
-        logDebug("vbat =%f \n", vbat);
-        tmos_start_task(vbat_task_id, VBAT_EVT_START, MS1_TO_SYSTEM_TIME(1000*300));  //1000*60
+        uint32_t next_check_time = vbat_low_flag ? 
+                                   MS1_TO_SYSTEM_TIME(1000*1) :  //1000*30 电压低时30秒检测一次
+                                   MS1_TO_SYSTEM_TIME(1000*6);   //1000*60 正常时1分钟检测一次
+        
+        tmos_start_task(vbat_task_id, VBAT_EVT_START, next_check_time);
         return (events ^ VBAT_EVT_START);
     }
     return 0;
diff --git a/bsp/src/bsp_bmp390.c b/bsp/src/bsp_bmp390.c
index babf4b7..4a3446c 100644
--- a/bsp/src/bsp_bmp390.c
+++ b/bsp/src/bsp_bmp390.c
@@ -617,7 +617,7 @@ BMP390_ProcessEvent(uint8_t task_id, uint16_t events)
                       P[2] = (uint32_t)(data.pressure / 100);
 
                       //printf("%d, %d, %d\r\n",T[0],T[1],T[2]);
-                    //   printf("%d, %d, %d, %d, %d, %d, %d \r\n",T[0],T[1],T[2],P[0],P[1],P[2],P[0]-P[1]);
+                      logDebug("%d, %d, %d, %d, %d, %d, %d \r\n",T[0],T[1],T[2],P[0],P[1],P[2],P[0]-P[1]);
                   }
                   tmos_start_task(press_task_id, BMP390_IN_START, MS1_TO_SYSTEM_TIME(500));  //100
                   //tmos_start_task(press_task_id, BMP390_ATOM_START, MS1_TO_SYSTEM_TIME(1000));
diff --git a/bsp/src/bsp_ml307r.c b/bsp/src/bsp_ml307r.c
index 167d4d8..da0d83a 100644
--- a/bsp/src/bsp_ml307r.c
+++ b/bsp/src/bsp_ml307r.c
@@ -170,7 +170,7 @@ static int BSP_Module_Connect_CtWing_Handle(at_env_t *e)
     {
         case 0:
             logDebug("create device...\r\n");
-            e->println(e, "AT+MIPOPEN=0,\"TCP\",\"8.135.10.183\",32994,,1");
+            e->println(e, "AT+MIPOPEN=0,\"TCP\",\"8.135.10.183\",32665,,1");  // 8.135.10.183,32994
             e->reset_timer(e);
             e->state++;
             break;
@@ -271,7 +271,7 @@ uint16_t Ml307r_Handle(uint8_t task_id, uint16_t events)
     if (events & ML307_PERIODIC_EVT)
     {
         Ml307r_Loop();
-        tmos_start_task(ml307_task_id, ML307_PERIODIC_EVT, MS1_TO_SYSTEM_TIME(5));
+        tmos_start_task(ml307_task_id, ML307_PERIODIC_EVT, MS1_TO_SYSTEM_TIME(1000));  //5
         return (events ^ ML307_PERIODIC_EVT);
     }
     return 0;
@@ -283,6 +283,26 @@ void BSP_Module_Send_Data(uint8_t* data, uint8_t len)
     at_send_data(ml307r_obj, &attr, data, len);
 }
 
+// 断电保护数据上报
+void BSP_Module_Emergency_Send(uint8_t* data, uint8_t len)
+{
+    if (ml307_task_id != INVALID_TASK_ID) {
+        GPIOB_SetBits(ENABLE_3_8_V);  // 确保3.8V供电正常
+        BSP_Read_Module();            // 确保模块在工作状态
+        at_attr_t attr;
+        at_send_data(ml307r_obj, &attr, data, len);
+        Ml307_Power_Off();
+        logDebug("Power failure protection data has been sent\n");
+    } else {
+        BSP_Ml307r_Init();           // 如果模块未初始化，先初始化
+        logDebug("4G initialization\n");
+        at_attr_t attr;
+        at_send_data(ml307r_obj, &attr, data, len);
+        Ml307_Power_Off();
+        logDebug("Power failure protection data has been sent\n");
+    }
+}
+
 void BSP_Ml307r_Init(void)
 {
     Ml307r_Gpio_Init();
@@ -299,5 +319,6 @@ void BSP_Ml307r_Init(void)
     simcom_init();
     BSP_Module_Connect_CtWing();
     BSP_Module_Send_Data(databuf, 5);
+    // Ml307_Power_Off();
 }
 
diff --git a/bsp/src/bsp_uart.c b/bsp/src/bsp_uart.c
index 6d67339..898f767 100644
--- a/bsp/src/bsp_uart.c
+++ b/bsp/src/bsp_uart.c
@@ -40,7 +40,8 @@ unsigned int BSP_Uart1_Send_Data(const void *buf, unsigned int len)
 //串口接收
 unsigned int BSP_Uart3_Receive_Data(void *buf, unsigned int len)
 {
-    return lwrb_write(&uart3_rx_t, buf, len);
+    // return lwrb_write(&uart3_rx_t, buf, len);
+    return lwrb_read(&uart3_rx_t, buf, len);
 }
 
 //串口发送数据
@@ -198,8 +199,10 @@ void UART3_IRQHandler(void)
         }
         case UART_II_RECV_RDY:
         case UART_II_RECV_TOUT: //接收超时
+            printf("UART_II_RECV_TOUT \r\n");
             while(R8_UART3_RFC)
             {
+                printf("shellHandler \r\n");
                 shellHandler(&shell, R8_UART3_RBR);
             }
             break;
diff --git a/common/letter-shell-master/src/log.h b/common/letter-shell-master/src/log.h
index e9cf349..14f6100 100644
--- a/common/letter-shell-master/src/log.h
+++ b/common/letter-shell-master/src/log.h
@@ -35,7 +35,7 @@ extern "C" {
 #endif
 
 #ifndef     LOG_ENABLE
-    #define LOG_ENABLE         0                /**< 浣胯兘log */
+    #define LOG_ENABLE         1                /**< 浣胯兘log */
 #endif
 
 #if LOG_USING_LOCK == 1
diff --git a/common/letter-shell-master/src/shell_port.c b/common/letter-shell-master/src/shell_port.c
index 6c0d7ba..f6780cc 100644
--- a/common/letter-shell-master/src/shell_port.c
+++ b/common/letter-shell-master/src/shell_port.c
@@ -52,11 +52,10 @@ void Uart_Log_Write(char *buffer, short len)
 {
     if (uartLog.shell)
     {
-//
-//        log宸ュ叿鍙互缁撳悎letter shell鐨勫熬琛屾ā寮忥紝瀹炵幇log鍜宻hell鍏辩敤涓�涓粓绔紝浣嗕笉褰卞搷shell浜や簰浣撻獙
+        // log宸ュ叿鍙互缁撳悎letter shell鐨勫熬琛屾ā寮忥紝瀹炵幇log鍜宻hell鍏辩敤涓�涓粓绔紝浣嗕笉褰卞搷shell浜や簰浣撻獙
         shellWriteEndLine(uartLog.shell, buffer, len);
     }
-//    UART1_SendString((uint8_t *)buffer, len);
+        // UART1_SendString((uint8_t *)buffer, len);
 }