diff --git a/app/src/main/cpp/GPIOControl.cpp b/app/src/main/cpp/GPIOControl.cpp
index 783025af..3bba8be7 100644
--- a/app/src/main/cpp/GPIOControl.cpp
+++ b/app/src/main/cpp/GPIOControl.cpp
@@ -43,7 +43,7 @@ typedef struct{
 
 void GpioControl::setInt(int cmd, int value)
 {
-    int fd = open("/dev/mtkgpioctrl", O_RDONLY);
+    int fd = open(GPIO_NODE_MP, O_RDONLY);
     IOT_PARAM param;
     param.cmd = cmd;
     param.value = value;
@@ -59,7 +59,7 @@ void GpioControl::setInt(int cmd, int value)
 
 int GpioControl::getInt(int cmd)
 {
-    int fd = open("/dev/mtkgpioctrl", O_RDONLY);
+    int fd = open(GPIO_NODE_MP, O_RDONLY);
     // LOGE("get_int fd=%d,cmd=%d\r\n",fd, cmd);
     if( fd > 0 )
     {
@@ -77,7 +77,7 @@ int GpioControl::getInt(int cmd)
 
 void GpioControl::setLong(int cmd, long value)
 {
-    int fd = open("/dev/mtkgpioctrl", O_RDONLY);
+    int fd = open(GPIO_NODE_MP, O_RDONLY);
     IOT_PARAM param;
     param.cmd = cmd;
     param.value2 = value;
@@ -93,7 +93,7 @@ void GpioControl::setLong(int cmd, long value)
 
 long GpioControl::getLong(int cmd)
 {
-    int fd = open("/dev/mtkgpioctrl", O_RDONLY);
+    int fd = open(GPIO_NODE_MP, O_RDONLY);
     // LOGE("get_long fd=%d,cmd=%d\r\n",fd, cmd);
     if( fd > 0 )
     {
@@ -110,8 +110,7 @@ long GpioControl::getLong(int cmd)
 void GpioControl::setString(int cmd, const std::string& value)
 {
     IOT_PARAM param;
-    // char *pval = jstringToChars(env, value);
-    int fd = open("/dev/mtkgpioctrl", O_RDONLY);
+    int fd = open(GPIO_NODE_MP, O_RDONLY);
     int len = MAX_STRING_LEN < value.size() ? MAX_STRING_LEN : value.size();
 
     param.cmd = cmd;
@@ -129,7 +128,7 @@ void GpioControl::setString(int cmd, const std::string& value)
 
 std::string GpioControl::getString(int cmd)
 {
-    int fd = open("/dev/mtkgpioctrl", O_RDONLY);
+    int fd = open(GPIO_NODE_MP, O_RDONLY);
     // LOGE("get_string fd=%d,cmd=%d\r\n",fd, cmd);
     if( fd > 0 )
     {
diff --git a/app/src/main/cpp/GPIOControl.h b/app/src/main/cpp/GPIOControl.h
index 70339636..e7090c20 100644
--- a/app/src/main/cpp/GPIOControl.h
+++ b/app/src/main/cpp/GPIOControl.h
@@ -48,6 +48,9 @@
 #define CMD_SET_485_en4							305
 
 
+#define GPIO_NODE_MP            "/dev/mtkgpioctrl"
+#define GPIO_NODE_N938          "/sys/devices/platform/1000b000.pinctrl/mt_gpio"
+
 class GpioControl
 {
 public: