// Sparkfun Display Driver via Software Serial
// Tim Hirzel
//
// This is adapted from the code by aaronpropst in Feb 2007 available here 
// http://www.arduino.cc/playground/Learning/SparkFunSerLCD

// and the SoftwareSerial library and example code by David A. Mellis in 2006


#include <SoftwareSerial.h>

float currentBrightness;
SoftwareSerial LCD =  SoftwareSerial(DISPLAY_RXPIN, DISPLAY_TXPIN);

byte pinState = 0;

void lcdPrint(char * str) {
  LCD.print(str);
}

void lcdPrint(int i) {
  LCD.print(i);
}

void lcdPrint(byte i) {
  LCD.print(i, BYTE);
}


void setupDisplay() {
  pinMode(DISPLAY_RXPIN, INPUT);
  pinMode(DISPLAY_TXPIN, OUTPUT);
  // set the data rate for the SoftwareSerial port
  LCD.begin(9600);
  delay(2);  //  these delays seem to help the display 

}

void selectDisplayLineOne(){  //puts the cursor at line 0 char 0.
  startSerialCommand();   //command flag
  LCD.print(128, BYTE);    //position
}
void selectDisplayLineTwo(){  //puts the cursor at line 0 char 0.
  startSerialCommand();   //command flag
  LCD.print(192, BYTE);    //position
}


void clearLCD(){
  startSerialCommand();   //command flag
  LCD.print(0x01, BYTE);   //clear command.
}

void lcdBacklightOn(){  //turns on the backlight
  startDisplayCommand();   //command flag for backlight stuff
  LCD.print(157, BYTE);    //light level.
  delay(2);
}
void lcdBacklightOff(){  //turns off the backlight
 startDisplayCommand();   //command flag for backlight stuff
  LCD.print(130, BYTE);     //light level for off. 128 = totally off.  increase value to add brightness
  delay(2);
}
void startSerialCommand(){   //a general function to call the command flag for issuing all other commands   
  LCD.print(0xFE, BYTE);
}

void startDisplayCommand(){   //a general function to call the command flag for issuing all other commands   
  LCD.print(0x7C, BYTE);
}

/*
float lcdGetBrightness() {
  return currentBrightness;
}

void setCurrentScreenAsSplash() {
  LCD.print(0xFE, BYTE);
  LCD.print(10, BYTE);
}

void toggleSplash() {
  LCD.print(0xFE, BYTE);
  LCD.print(9, BYTE);
}

void underlineCursorOn(boolean on) {
  LCD.print(0xFE, BYTE);
  if (on)
    LCD.print(74, BYTE);
  else
    LCD.print(75, BYTE);
  
}

void cursorSet(int xpos, int ypos){  
  LCD.print(0xFE, BYTE);
  LCD.print(71, BYTE);               
  LCD.print(xpos);   //Column position   
  LCD.print(ypos); //Row position 
} 


void customChar(byte address, byte *charmap){
  int i;
  clearLCD();
  LCD.print(254, BYTE);
  LCD.print(address+64, BYTE);
  for (i =0; i< 8; i++){
    LCD.print(charmap[i], BYTE);
  }
  clearLCD();
}

void printCustom(byte address) {
  LCD.print(address, BYTE);
}

void lcdSetBrightness(float percent){  //turns off the backlight
  currentBrightness = percent;
  byte newval = 128 + (byte)(29.0 * percent * 0.01);
  LCD.print(0x7C, BYTE);   //command flag for backlight stuff
  LCD.print(newval, BYTE);     //light level for off.
  delay(4);
}
*/