// video overlay for ATV
// code for the kg4wsv video overlay board
// 8MHz board, internal 8MHz oscillator, MAX7456, 3:1 voltage divider on analog input 3
// kg4wsv at or near gmail

#include "MAX7456.h"
MAX7456 osd;

#define MAX7456_SELECT 10


void setup()
{
  Serial.begin(9600);

  osd.begin(MAX7456_SELECT, true); // true means we're using the MAX7456 native character set
                                   // remove if you've done the ASCII character set load on your 7456
}


void loop()
{
  float voltage;
  
  // 3:1 voltage divider, 5V reference, 10 bit ADC
  voltage = 4.0 * 5.0 * ((float) analogRead(3)) / 1024.0;

  osd.home();
  osd.println("");
  osd.print("NOCALL              ");
  osd.print(voltage);
  osd.println("V    ");

  Serial.print("NOCALL ");
  Serial.print(voltage);
  Serial.println("V");

  delay(250);
}