String menuItems[] = {"ITEM 1", "ITEM 2", "ITEM 3", "ITEM 4", "ITEM 5", "ITEM 6"};
int readKey;
int savedDistance = 0;
int menuPage = 0;
int maxMenuPages = round(((sizeof(menuItems) / sizeof(String)) / 2) + .5);
int cursorPosition = 0;
byte downArrow[8] = {
0b00100, // *
0b00100, // *
0b00100, // *
0b00100, // *
0b00100, // *
0b10101, // * * *
0b01110, // ***
0b00100 // *
};
byte upArrow[8] = {
0b00100, // *
0b01110, // ***
0b10101, // * * *
0b00100, // *
0b00100, // *
0b00100, // *
0b00100, // *
0b00100 // *
};
byte menuCursor[8] = {
B01000, // *
B00100, // *
B00010, // *
B00001, // *
B00010, // *
B00100, // *
B01000, // *
B00000 //
};
#include <Wire.h>
#include <LiquidCrystal.h>
// Setting the LCD shields pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
void setup() {
Serial.begin(9600);
lcd.begin(16, 2);
lcd.clear();
lcd.createChar(0, menuCursor);
lcd.createChar(1, upArrow);
lcd.createChar(2, downArrow);
}
void loop() {
mainMenuDraw();
drawCursor();
operateMainMenu();
}
void mainMenuDraw() {
Serial.print(menuPage);
lcd.clear();
lcd.setCursor(1, 0);
lcd.print(menuItems[menuPage]);
lcd.setCursor(1, 1);
lcd.print(menuItems[menuPage + 1]);
if (menuPage == 0) {
lcd.setCursor(15, 1);
lcd.write(byte(2));
} else if (menuPage > 0 and menuPage < maxMenuPages) {
lcd.setCursor(15, 1);
lcd.write(byte(2));
lcd.setCursor(15, 0);
lcd.write(byte(1));
} else if (menuPage == maxMenuPages) {
lcd.setCursor(15, 0);
lcd.write(byte(1));
}
}
void drawCursor() {
for (int x = 0; x < 2; x++) { // Erases current cursor
lcd.setCursor(0, x);
lcd.print(" ");
}
// The menu is set up to be progressive (menuPage 0 = Item 1 & Item 2, menuPage 1 = Item 2 & Item 3, menuPage 2 = Item 3 & Item 4), so
// in order to determine where the cursor should be you need to see if you are at an odd or even menu page and an odd or even cursor position.
if (menuPage % 2 == 0) {
if (cursorPosition % 2 == 0) { // If the menu page is even and the cursor position is even that means the cursor should be on line 1
lcd.setCursor(0, 0);
lcd.write(byte(0));
}
if (cursorPosition % 2 != 0) { // If the menu page is even and the cursor position is odd that means the cursor should be on line 2
lcd.setCursor(0, 1);
lcd.write(byte(0));
}
}
if (menuPage % 2 != 0) {
if (cursorPosition % 2 == 0) { // If the menu page is odd and the cursor position is even that means the cursor should be on line 2
lcd.setCursor(0, 1);
lcd.write(byte(0));
}
if (cursorPosition % 2 != 0) { // If the menu page is odd and the cursor position is odd that means the cursor should be on line 1
lcd.setCursor(0, 0);
lcd.write(byte(0));
}
}
}
void operateMainMenu() {
int activeButton = 0;
while (activeButton == 0) {
int button;
readKey = analogRead(0);
if (readKey < 790) {
delay(100);
readKey = analogRead(0);
}
button = evaluateButton(readKey);
switch (button) {
case 0: // When button returns as 0 there is no action taken
break;
case 1: // This case will execute if the "forward" button is pressed
button = 0;
switch (cursorPosition) { // The case that is selected here is dependent on which menu page you are on and where the cursor is.
case 0:
menuItem1();
break;
case 1:
menuItem2();
break;
case 2:
menuItem3();
break;
case 3:
menuItem4();
break;
case 4:
menuItem5();
break;
case 5:
menuItem6();
break;
case 6:
menuItem7();
break;
case 7:
menuItem8();
break;
case 8:
menuItem9();
break;
case 9:
menuItem10();
break;
}
activeButton = 1;
mainMenuDraw();
drawCursor();
break;
case 2:
button = 0;
if (menuPage == 0) {
cursorPosition = cursorPosition - 1;
cursorPosition = constrain(cursorPosition, 0, ((sizeof(menuItems) / sizeof(String)) - 1));
}
if (menuPage % 2 == 0 and cursorPosition % 2 == 0) {
menuPage = menuPage - 1;
menuPage = constrain(menuPage, 0, maxMenuPages);
}
if (menuPage % 2 != 0 and cursorPosition % 2 != 0) {
menuPage = menuPage - 1;
menuPage = constrain(menuPage, 0, maxMenuPages);
}
cursorPosition = cursorPosition - 1;
cursorPosition = constrain(cursorPosition, 0, ((sizeof(menuItems) / sizeof(String)) - 1));
mainMenuDraw();
drawCursor();
activeButton = 1;
break;
case 3:
button = 0;
if (menuPage % 2 == 0 and cursorPosition % 2 != 0) {
menuPage = menuPage + 1;
menuPage = constrain(menuPage, 0, maxMenuPages);
}
if (menuPage % 2 != 0 and cursorPosition % 2 == 0) {
menuPage = menuPage + 1;
menuPage = constrain(menuPage, 0, maxMenuPages);
}
cursorPosition = cursorPosition + 1;
cursorPosition = constrain(cursorPosition, 0, ((sizeof(menuItems) / sizeof(String)) - 1));
mainMenuDraw();
drawCursor();
activeButton = 1;
break;
}
}
}
Je le coupe en deux parties parce que c'est 9000 caractères max