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Old 10-05-2010, 02:24 AM   #6 (permalink)
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Location: Fresno, CA
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LEAF - '11 Nissan LEAF
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Next up... Duck.

Yes, all it is, is a duck. Just a duck.

Add to LCD prototype (begins at "// LCD prototype" near the top):
  void initDuck();
  void printDuck(byte pos);
Add "doDisplayDuck" to the list of "displayFuncs[]" containing all the other doDisplay's.
Add the line "displayFuncNames[x++] = PSTR("Duck.");" to the menu selections (big block of displayFuncNames[x++]).

Add the following function, I put it around all the other display functions (below doDisplaySystemInfo):
void doDisplayDuck(void) {
  while (tmp1[0] > 6) {
    tmp1[1] = 1;
  if (tmp1[1]) tmp1[0]--;
  else tmp1[0]++;
  if (tmp1[0] == 0) {
    tmp1[1] = 0;
Now, look for "displayFuncs[screen](); //call the appropriate display routine". Look for the comment "//left is rotate through screeens to the left", and the misnomer "//right is rotate through screeens to the left", and just below each of those, add the line "if (screen == displayFuncSize - 1) LCD::init();". At the bottom of each, under the "LCD:rint" statement, add the line "if (screen == displayFuncSize - 1) LCD::initDuck();". This ensures that the LCD is in the right state when both coming-from and going-to the Duck mode.

Finally, two LCD functions need to be added - initDuck and printDuck.
In the LCD section near the middle, add:
void LCD::initDuck() {
  //creating the duck:
  LcdCommandWrite(0b00001100); // display control:
  LcdCommandWrite(0b00000110); // entry mode set: increment automatically, no display shift

  LcdCommandWrite(0b01001000); // set cgram
  static byte chars[] PROGMEM = {
     B00001,B10000,B00000,B00000, B00000,B11111,B11111,B00110,
     B00011,B11000,B00000,B00000, B00001,B11111,B11111,B11110,
     B00010,B11100,B00000,B00000, B00011,B11111,B11111,B11100,
     B01111,B11100,B00000,B00000, B00011,B11111,B11111,B11111,
     B11111,B11100,B00000,B00000, B00011,B11111,B11111,B11110,
     B00001,B11100,B00000,B00000, B00011,B11111,B11111,B11100,
     B00000,B11000,B00000,B00000, B00001,B11111,B11111,B11000,
     B00000,B11100,B01100,B00000, B00000,B11111,B11111,B10000};

  for(byte x=0;x<LcdNewChars;x++)
    for(byte y=0;y<LcdCharHeightPix;y++) 

  LcdCommandWrite(0b00000001); // clear display, set cursor position to zero
  LcdCommandWrite(0b10000000); // set dram to zero

void LCD::printDuck(byte pos) {
  char duckchars[]={ 1,2,3,4,4,0,5,6,7,8,4,0 };
  byte x=0;
  for (x=0;x<pos;x++) {
    LCD::print(" ");
  for (x=0;x<pos;x++) {
    LCD::print(" ");
Then, upload, rechip, and voila... you have a duck screen.
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