diff --git a/APP_Framework/Framework/transform_layer/nuttx/transform.c b/APP_Framework/Framework/transform_layer/nuttx/transform.c
index e8d10d294..d01176541 100644
--- a/APP_Framework/Framework/transform_layer/nuttx/transform.c
+++ b/APP_Framework/Framework/transform_layer/nuttx/transform.c
@@ -55,17 +55,19 @@ int PrivSemaphoreDelete(sem_t *sem)
 
 int PrivSemaphoreObtainWait(sem_t *sem, const struct timespec *abstime)
 {
+    /* if the timeout is not set, it will be blocked all the time. */
+    if(!abstime)
+    {
+        return sem_wait(sem);
+    }
+
+    /* if the timeout time is set, it will be executed downward after the timeout, and will not be blocked. */
     struct timespec timeout;
     clock_gettime(CLOCK_REALTIME, &timeout);
     timeout.tv_sec += abstime->tv_sec;
     return sem_timedwait(sem, &timeout);
 }
 
-int PrivSemaphoreObtainWaitForever(sem_t *sem)
-{
-    return sem_wait(sem);
-}
-
 int PrivSemaphoreObtainNoWait(sem_t *sem)
 {
     return sem_trywait(sem);
diff --git a/APP_Framework/Framework/transform_layer/nuttx/transform.h b/APP_Framework/Framework/transform_layer/nuttx/transform.h
index 4ac1ca2fa..39e868a8b 100644
--- a/APP_Framework/Framework/transform_layer/nuttx/transform.h
+++ b/APP_Framework/Framework/transform_layer/nuttx/transform.h
@@ -182,7 +182,6 @@ int PrivMutexAbandon(pthread_mutex_t *p_mutex);
 int PrivSemaphoreCreate(sem_t *sem, int pshared, unsigned int value);
 int PrivSemaphoreDelete(sem_t *sem);
 int PrivSemaphoreObtainWait(sem_t *sem, const struct timespec *abstime);
-int PrivSemaphoreObtainWaitForever(sem_t *sem);
 int PrivSemaphoreObtainNoWait(sem_t *sem);
 int PrivSemaphoreAbandon(sem_t *sem);
 int32_t PrivSemaphoreSetValue(int32_t sem, uint16_t val);