Initial Trinket Randomizer software

gistfile1.ino

/*
Hackaday Trinket Everyday Carry Contest Week 2 drawing!
Query the user for minimum and maximum values. 

*/
#define ARRAY_LEN 25

int getAnInt();



long randomNumber = 0;
int maxVal=0;
int minVal=0;
int analogVal=0;
void setup() 
{
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
}

// the loop routine runs over and over again forever:
void loop() 
{
  Serial.println("Enter Min Val\n");
  minVal=getAnInt();
  Serial.println("Enter Max Val\n");
  maxVal=getAnInt();     
  Serial.print("min is ");
  Serial.println(minVal);
  Serial.print("Max is ");
  Serial.println(maxVal);
  analogVal=millis();
  Serial.print("Seed is ");
  Serial.println(analogVal);
  randomSeed(analogVal);
  randomNumber=random(minVal, maxVal);
  Serial.print("Result is ");
  Serial.println(randomNumber);
  Serial.println("Winner Winner Chicken Dinner!");
  Serial.println("\n\n");
  delay(10);        
}

int getAnInt()
{
  int charCount=0;
  int intVal=0;
  char charArray[ARRAY_LEN];
  char inChar=0;
  memset(charArray,0,ARRAY_LEN);
  while(Serial.available()==0)
  {
    delay(20); //just wait for some input
  }
  delay(200); // little delay to make sure we get all the digits
  
  while (Serial.available() > 0)
  {
    inChar=Serial.read();
    if((inChar!='\n')&&(charCount < ARRAY_LEN-1))
    {
     charArray[charCount] = inChar;
     charCount++;
    }
  }
  intVal = atoi(charArray);
  return intVal;
}