diff --git a/Lins.c b/Lins.c
index 8b29b79..27422f5 100644
--- a/Lins.c
+++ b/Lins.c
@@ -6,18 +6,20 @@
 #include "fc7xxx_driver_gpio.h"
 #include "Lins.h"
 
-tLins LINS;
+tLinPorts LIN_PORTS;
 
-void LinCallbackHandler(uint8_t u8LinIndex, void *state) {
-    GetLinCallbackHandler(&LINS.lin, u8LinIndex, state);
+static void Lin0CallbackHandler(uint8_t u8LinIndex, void *state) {
+    LIN_PORTS.lin0.LinExtCallbackHandler(LIN_PORTS.lin0.envCallExtBack, u8LinIndex, state);
 }
 
 void FCUART4_RxTx_IRQHandler(void) {
-    LIN_DrvIRQHandler(LINS.lin.UART_INDEX);
+    LIN_DrvIRQHandler(LIN_PORTS.lin0.UART_INDEX);
 }
 
-void Lins_Init() {
-    tLins *env = &LINS;
+tLinData*  Lin0_Init(lin_callback_ext_t Lin_ExtCallbackHandler,
+               void *Lin_envCallExtBack) {
+
+    tLinPorts *env = &LIN_PORTS;
 
     PORT_InitType tInitStruct = {0};
     GPIO_InitType tGpioInitStruct = {0};
@@ -29,7 +31,7 @@ void Lins_Init() {
     tInitStruct.ePullSel = PORT_PULL_UP;
     PORT_InitPins(PORT_D, &tInitStruct);
 
-    tGpioInitStruct.u32GpioPins   = GPIO_PIN_12;
+    tGpioInitStruct.u32GpioPins = GPIO_PIN_12;
     tGpioInitStruct.ePinDirection = GPIO_IN;
     GPIO_InitPins(GPIO_D, &tGpioInitStruct);
 
@@ -54,17 +56,21 @@ void Lins_Init() {
     //GPIO_InitPins(GPIO_D, &tGpioInitStruct);
 
     LIN_Initial(
-            &env->lin,
+            &env->lin0,
             FCUART4,
-            19200,
+            9600,
 
             4, // UART0 = 0 ... UART7 = 7
             FCUART4_IRQn, // FCUART0_IRQn ... FCUART7_IRQn
             0xFF,
 
             NULL,
-            LinCallbackHandler
+            Lin0CallbackHandler,
+            Lin_ExtCallbackHandler,
+            Lin_envCallExtBack
     );
 
-    env->linIo = vLinGetIo(&env->lin);
+    env->lin0_Io = vLinGetIo(&env->lin0);
+
+    return &env->lin0.linData;
 }
diff --git a/Lins.h b/Lins.h
index f5aed38..1e52162 100644
--- a/Lins.h
+++ b/Lins.h
@@ -8,12 +8,13 @@
 #include "LinFlagchip.h"
 
 typedef struct {
-    tLinFlagchip lin;
-    tLinIO linIo;
-} tLins;
+    tLinFlagchip lin0;
+    tLinIO lin0_Io;
+} tLinPorts;
 
-extern tLins LINS;
+extern tLinPorts LIN_PORTS;
 
-void Lins_Init();
+tLinData*  Lin0_Init(lin_callback_ext_t Lin_ExtCallbackHandler,
+                             void *Lin_envCallExtBack);
 
 #endif //FLAG_LINS_H