diff --git a/build/erpc_core.o b/build/erpc_core.o
index f4f1516..4ef1d04 100644
Binary files a/build/erpc_core.o and b/build/erpc_core.o differ
diff --git a/build/port_self.o b/build/port_self.o
index 37fbaef..3ffa0f2 100644
Binary files a/build/port_self.o and b/build/port_self.o differ
diff --git a/erpc_core.c b/erpc_core.c
index 93145f1..4a708ab 100644
--- a/erpc_core.c
+++ b/erpc_core.c
@@ -187,6 +187,7 @@ u32 erpc_send_base(erpc_hw_cfg_t *hw_cfg, u8 dest_id, u16 port, u8 package_type,
   {
     if (wait_time == 0)
     {
+      printf("send timeout,state:%d\n", hw_cfg->send_cache[cache_ord].state);
       ret = ERPC_ERR_SEND_TIMEOUT;
       break;
     }
diff --git a/port_self.c b/port_self.c
index 802063c..cc3b1bc 100644
--- a/port_self.c
+++ b/port_self.c
@@ -32,6 +32,8 @@ u32 hello_cat(u8 hw, u8 src_id, u8 dest_id, u16 port, u8 *data, u16 len)
     return 0;
 }
 
+
+
 u32 hello_dog(u8 hw, u8 src_id, u8 dest_id, u16 port, u8 *data, u16 len)
 {
     ERPC_DEBUG("Hello Dog!\n");
@@ -136,8 +138,16 @@ DWORD WINAPI test_task(LPVOID lpParam)
         ERPC_DEBUG("[test_task]send ret:%d\n", ret);
         ret = erpc_send(self_hw_cfg.ord, self_hw_cfg.local_id, 0x02, NULL, 0);
         ERPC_DEBUG("[test_task]send ret:%d\n", ret);
-        ret = erpc_send_wait_reply(self_hw_cfg.ord, self_hw_cfg.local_id, 0x03, NULL, 0, data, NULL, 1000);
+        u16 reply_len = 30;
+        u8 data[reply_len];
+        ret = erpc_send_wait_reply(self_hw_cfg.ord, self_hw_cfg.local_id, 0x03, NULL, 0, data, &reply_len, 1000);
         ERPC_DEBUG("[test_task]send ret:%d\n", ret);
+        for (int i = 0; i < reply_len; i++)
+        {
+            ERPC_DEBUG("%c", data[i]);
+        }
+        ERPC_DEBUG("\n");
+        
         UNUSED(ret);
         sys_sleep(1000);
     }
@@ -156,7 +166,7 @@ int main(int argc, char *argv[])
     ERPC_DEBUG("erpc_cmd_config ret:%d\n", ret);
     erpc_sleep_tick = sys_sleep;
 
-    HANDLE threadHandle[3];
+    HANDLE threadHandle[4];
     deal_lock = CreateMutex(NULL, FALSE, NULL);
     if (deal_lock == NULL)
     {
@@ -171,13 +181,16 @@ int main(int argc, char *argv[])
     }
     threadHandle[0] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)send_task, NULL, 0, NULL);
     threadHandle[1] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)rev_task, NULL, 0, NULL);
-    threadHandle[2] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)test_task, NULL, 0, NULL);
+    threadHandle[3] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)rev_task, NULL, 0, NULL);
+    threadHandle[4] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)test_task, NULL, 0, NULL);
 
     WaitForSingleObject(threadHandle[0], INFINITE);
     WaitForSingleObject(threadHandle[1], INFINITE);
     WaitForSingleObject(threadHandle[2], INFINITE);
+    WaitForSingleObject(threadHandle[3], INFINITE);
     CloseHandle(threadHandle[0]);
     CloseHandle(threadHandle[1]);
     CloseHandle(threadHandle[2]);
+    CloseHandle(threadHandle[3]);
     return 0;
 }
\ No newline at end of file
diff --git a/port_self.exe b/port_self.exe
index bbbc9e8..3e587f7 100644
Binary files a/port_self.exe and b/port_self.exe differ