diff --git a/TestComm/app/src/main/cpp/WeatherComm.cpp b/TestComm/app/src/main/cpp/WeatherComm.cpp
index a27f29be..9a2a648a 100644
--- a/TestComm/app/src/main/cpp/WeatherComm.cpp
+++ b/TestComm/app/src/main/cpp/WeatherComm.cpp
@@ -16,6 +16,7 @@
 #include <time.h>
 #include "GPIOControl.h"
 #include "WeatherComm.h"
+#include <sys/time.h>
 
 SIO_PARAM_SERIAL_DEF serialport;
 float weatherpntmsg[10];
@@ -365,12 +366,22 @@ static void RecvData(u_char *buf, int len)// 规约读数据处理
     }
 }
 
+static long get_msec(void )
+{
+    struct timeval tv;
+
+    gettimeofday(&tv, NULL);
+    long time_in_msec = tv.tv_sec * 1000 + tv.tv_usec/1000;
+
+    return time_in_msec;
+}
 //int inum =0;
 //int itimecnt=0;
 static int weather_comm(SERIAL_PARAM weatherport)
 {
     int fd = -1;
-    int len, i,ret, ictime, iruntime, isendtime, irecvtime, icnt=0;
+    int len, i,ret, icnt=0;
+    long ictime, iruntime, isendtime, irecvtime;
     unsigned char sendbuf[] = {0x68,0x00,0x00,0x68,0x01,0x09,0x0a,0x16};
     char recvbuf[256], szbuf[512];
     //char serial_description[] = "/dev/ttyS0";
@@ -402,8 +413,9 @@ static int weather_comm(SERIAL_PARAM weatherport)
     set12VEnable(true);
     setCam3V3Enable(true);
     setRS485Enable(true);
-
-    ictime = (int)time(NULL);
+    sleep(2);
+    //ictime = (int)time(NULL);
+    ictime = get_msec();
     for(;;)
     {
         if(fd < 0)
@@ -426,13 +438,14 @@ static int weather_comm(SERIAL_PARAM weatherport)
         }
 
         usleep(10000);
-        iruntime = (int)time(NULL);
-        if((iruntime - ictime > 120) || (iruntime - ictime < 0))
+        //iruntime = (int)time(NULL);
+        iruntime = get_msec();
+        if((iruntime - ictime > 120000) || (iruntime - ictime < 0))
             ictime = iruntime;
-        if(iruntime - ictime > 19)
+        if(iruntime - ictime > 20000)
         {
             memset(szbuf, 0, sizeof(szbuf));
-            sprintf(szbuf, "气象采样时间=%d,停止采样!", iruntime-ictime);
+            sprintf(szbuf, "气象采样时间=%0.3f秒,停止采样!", (iruntime-ictime)/1000.0);
             LOGE("%s", szbuf);
             break;
         }
@@ -443,7 +456,9 @@ static int weather_comm(SERIAL_PARAM weatherport)
 
             len = write(fd, sendbuf, sizeof(sendbuf));/* 向串囗发送字符串 */
             serialport.RevCmdFlag = 0;
-            isendtime = time(NULL);
+            LOGE("发送命令时间差%ld毫秒", get_msec()-isendtime);
+            //isendtime = time(NULL);
+            isendtime = get_msec();
             if (len < 0) {
                 LOGE("write data error \n");
                 return -1;
@@ -462,12 +477,13 @@ static int weather_comm(SERIAL_PARAM weatherport)
         }
         else
         {
-            irecvtime = time(NULL);
-            if((irecvtime-isendtime > 6) ||(irecvtime - isendtime < 0))
+            //irecvtime = time(NULL);
+            irecvtime = get_msec();
+            if((irecvtime-isendtime > 6000) ||(irecvtime - isendtime < 0))
                 isendtime = irecvtime;
-            if (irecvtime-isendtime > 1)
+            if (irecvtime-isendtime > 300)
             {
-                LOGE("传感器超过%d秒未应答", irecvtime-isendtime);
+                LOGE("传感器超过%ld毫秒未应答", irecvtime-isendtime);
                 serialport.RevCmdFlag = 1;
                 serialport.m_iRecvLen = 0;
                 serialport.m_iRevStatus = 0;
@@ -516,6 +532,14 @@ static int weather_comm(SERIAL_PARAM weatherport)
 int serial_port_comm()
 {
     SERIAL_PARAM  portparm;
+
+    //struct timeval tv;
+
+    //gettimeofday(&tv, NULL);
+    //long time_in_microseconds = tv.tv_sec * 1000000 + tv.tv_usec;
+
+    //LOGE("Current time in microseconds: %ld\n", time_in_microseconds);
+
 #if 1
     memset(portparm.pathname, 0, sizeof(portparm.pathname));
     sprintf(portparm.pathname, "/dev/ttyS0");
diff --git a/app/src/main/cpp/WeatherComm.cpp b/app/src/main/cpp/WeatherComm.cpp
index 20304c40..9a2a648a 100644
--- a/app/src/main/cpp/WeatherComm.cpp
+++ b/app/src/main/cpp/WeatherComm.cpp
@@ -16,6 +16,7 @@
 #include <time.h>
 #include "GPIOControl.h"
 #include "WeatherComm.h"
+#include <sys/time.h>
 
 SIO_PARAM_SERIAL_DEF serialport;
 float weatherpntmsg[10];
@@ -365,12 +366,22 @@ static void RecvData(u_char *buf, int len)// 规约读数据处理
     }
 }
 
+static long get_msec(void )
+{
+    struct timeval tv;
+
+    gettimeofday(&tv, NULL);
+    long time_in_msec = tv.tv_sec * 1000 + tv.tv_usec/1000;
+
+    return time_in_msec;
+}
 //int inum =0;
 //int itimecnt=0;
 static int weather_comm(SERIAL_PARAM weatherport)
 {
     int fd = -1;
-    int len, i,ret, ictime, iruntime, isendtime, irecvtime, icnt=0;
+    int len, i,ret, icnt=0;
+    long ictime, iruntime, isendtime, irecvtime;
     unsigned char sendbuf[] = {0x68,0x00,0x00,0x68,0x01,0x09,0x0a,0x16};
     char recvbuf[256], szbuf[512];
     //char serial_description[] = "/dev/ttyS0";
@@ -402,8 +413,9 @@ static int weather_comm(SERIAL_PARAM weatherport)
     set12VEnable(true);
     setCam3V3Enable(true);
     setRS485Enable(true);
-
-    ictime = (int)time(NULL);
+    sleep(2);
+    //ictime = (int)time(NULL);
+    ictime = get_msec();
     for(;;)
     {
         if(fd < 0)
@@ -426,13 +438,14 @@ static int weather_comm(SERIAL_PARAM weatherport)
         }
 
         usleep(10000);
-        iruntime = (int)time(NULL);
-        if((iruntime - ictime > 120) || (iruntime - ictime < 0))
+        //iruntime = (int)time(NULL);
+        iruntime = get_msec();
+        if((iruntime - ictime > 120000) || (iruntime - ictime < 0))
             ictime = iruntime;
-        if(iruntime - ictime > 19)
+        if(iruntime - ictime > 20000)
         {
             memset(szbuf, 0, sizeof(szbuf));
-            sprintf(szbuf, "气象采样时间=%d,停止采样!", iruntime-ictime);
+            sprintf(szbuf, "气象采样时间=%0.3f秒,停止采样!", (iruntime-ictime)/1000.0);
             LOGE("%s", szbuf);
             break;
         }
@@ -443,7 +456,9 @@ static int weather_comm(SERIAL_PARAM weatherport)
 
             len = write(fd, sendbuf, sizeof(sendbuf));/* 向串囗发送字符串 */
             serialport.RevCmdFlag = 0;
-            isendtime = time(NULL);
+            LOGE("发送命令时间差%ld毫秒", get_msec()-isendtime);
+            //isendtime = time(NULL);
+            isendtime = get_msec();
             if (len < 0) {
                 LOGE("write data error \n");
                 return -1;
@@ -462,12 +477,13 @@ static int weather_comm(SERIAL_PARAM weatherport)
         }
         else
         {
-            irecvtime = time(NULL);
-            if((irecvtime-isendtime > 6) ||(irecvtime - isendtime < 0))
+            //irecvtime = time(NULL);
+            irecvtime = get_msec();
+            if((irecvtime-isendtime > 6000) ||(irecvtime - isendtime < 0))
                 isendtime = irecvtime;
-            if (irecvtime-isendtime > 1)
+            if (irecvtime-isendtime > 300)
             {
-                LOGE("传感器超过%d秒未应答", irecvtime-isendtime);
+                LOGE("传感器超过%ld毫秒未应答", irecvtime-isendtime);
                 serialport.RevCmdFlag = 1;
                 serialport.m_iRecvLen = 0;
                 serialport.m_iRevStatus = 0;
@@ -513,10 +529,17 @@ static int weather_comm(SERIAL_PARAM weatherport)
     return(0);
 }
 
-/* 测试代码使用*/
 int serial_port_comm()
 {
     SERIAL_PARAM  portparm;
+
+    //struct timeval tv;
+
+    //gettimeofday(&tv, NULL);
+    //long time_in_microseconds = tv.tv_sec * 1000000 + tv.tv_usec;
+
+    //LOGE("Current time in microseconds: %ld\n", time_in_microseconds);
+
 #if 1
     memset(portparm.pathname, 0, sizeof(portparm.pathname));
     sprintf(portparm.pathname, "/dev/ttyS0");
@@ -528,7 +551,7 @@ int serial_port_comm()
 #endif
     //itimecnt = (int)time(NULL);
 
-    for(;;)
+    //for(;;)
         weather_comm(portparm);
     return 0;
 }