Serial buffer array - What's wrong

Projects Programming
6

Ok so I tried a > 5 and the results worked. Though I'm not sure I get the logic behind it and will break that down for further study. In effort to move on with the test, the results are unexpected but do show. I expected the following to happen:

reading Serial String:
00000

but get the following results which was unexpected:
reading Serial String:
.....
reading Serial String:
.....
reading Serial String:
00000

I had to add Serial1.flush(); to end of loop otherwise it would continuously loop with same serial data. I thought once you read the serial buffer it is cleared. So the flush seemed to handle that. Though I can not explain the tripple posting each time new serial data is detected. I have attached the code with current revisions.

uint8_t LcdRcvPacket[] = { 0, 0, 0, 0, 0}; // payload from Serial1

// Payload sent over serial port like this 00000 (broken out would be 0,000,0,0,0)see below for posisbel data ranges

int Data1, Data2, Data3, Data4, Data5;

void setup()  
{
 // Open serial communications and wait for port to open:
  Serial1.begin(9600); // Mega 2560
  Serial.begin(9600); //  Serial Com port on PC
}

void loop() // Repeat over and over
{
  
    if(Serial1.available()) // If serial Data detected then process otherwise bypass
    {       // If LCD data avaiable get it
	Serial.println("reading Serial String: ");     //Debug code
	  while (Serial1.available() > 5) 
            { 
	      for(int n=0; n < 5; n++) 		
LcdRcvPacket[n] = Serial1.read(); // Assign LCD data into a array for processing
                delay(500);
	    }
	
	// Parse Array into indavidual variables
	Data1 = LcdRcvPacket[0]; 
	Data2 = LcdRcvPacket[1];
	Data3 = LcdRcvPacket[2];
	Data4 = LcdRcvPacket[3];
	Data5 = LcdRcvPacket[4];

        Serial.write(Data1); //Data range 0-1
        Serial.write(Data2); //Data range 0-100
        Serial.write(Data3); //Data range 1-3
        Serial.write(Data4); //Data range 1-3
        Serial.write(Data5); //Data range 0-1
        Serial.println(); 
    }
    Serial1.flush();
   // If no serial data then do somthing else, or process data detected that was captured.
}