diff --git a/Demo_C/Demo/LED/LED.c b/Demo_C/Demo/LED/LED.c
index 4123177..5b5f48a 100644
--- a/Demo_C/Demo/LED/LED.c
+++ b/Demo_C/Demo/LED/LED.c
@@ -66,13 +66,13 @@ int PrgTic
 	// }
     if(cur_time-prev_time>=wait*0.1)
 	{
-		spectrum(p_ta_array);
+		spectrum();
 	}
 	update_lights(p_ta_array);
 	return RC;
 }
 
-void spectrum(TA * p_ta_array)
+void spectrum()
 {
 	switch(spectrum_state)
 	{
@@ -101,6 +101,7 @@ void simple_rgb_test
 	TA * p_ta_array    // pointer to the array of transfer areas
 )
 {
+	TA * p_ta = &p_ta_array[TA_LOCAL];
 		if(cur_time-prev_time>=wait)
 		{
 			prev_time = cur_time;