So im trying to create a menu interface on my lcd that I have. I've been doing lots of research and the code is driving me bonkers. I'm hoping im going in the right direction, im trying to make it so when a button is pressed it displays a number on the screen. As it sits right now im just trying to get a good way of reading what button was pressed and return a value to the main function. Any input is greatly appreciated.
As it is right now i think my case statement is wrong cause it displays both the text lines on the lcd and doesn't wait for the button input to change.
The Code:
#include <string.h>
#include <avr/pgmspace.h>
#include "SystemFont5x7.h" // system font
#include <ks0108.h> // LCD
prog_char string_0[] PROGMEM = "1. Enter User ID"; //0
prog_char string_1[] PROGMEM = "2. Thanks for the Input!"; //1
prog_char string_2[] PROGMEM = "3."; //2
prog_char string_3[] PROGMEM = "4."; //3
prog_char string_4[] PROGMEM = "5."; //4
prog_char string_5[] PROGMEM = "6."; //5
prog_char string_6[] PROGMEM = "7.";
prog_char string_7[] PROGMEM = "8.";
prog_char string_8[] PROGMEM = "9.";
prog_char string_9[] PROGMEM = "10.";
prog_char string_10[] PROGMEM = "11.";
PGM_P PROGMEM StringTable[] =
{
string_0, string_1, string_2, string_3, string_4, string_5, string_6, string_7, string_8, string_9, string_10
};
#define escBtn 42
#define button1 43
#define button2 44
#define button3 45
int state[4];
void setup() // run once, when the sketch starts
{
UnitSetup(); //get the screen up and running
MainMenu();
pinMode(escBtn,INPUT);
}
void loop() // run over and over again
{
}
void MainMenu()
{
byte whichkey, Screen = 0;
whichkey = PollKey();
do
{
switch(Screen)
{
case 1:
GLCD.GotoXY(5,10);
PrintLCD_P(0);
if (digitalRead(escBtn) == HIGH)
{
Screen++;
}
case 2:
GLCD.GotoXY(5,10);
PrintLCD_P(1);
if (digitalRead(escBtn) == HIGH)
{
Screen++;
}
case 3:
break;
}
} while (digitalRead(button1) != HIGH);
}
byte UnitSetup()
{
GLCD.Init(NON_INVERTED); // initialise the library, non inverted turns on written pixels
GLCD.ClearScreen();
GLCD.SelectFont(System5x7);
pinMode(escBtn,INPUT); //set pin as input
}
void PrintLCD_P(int which)
{
char buffer[21];
strcpy_P(buffer, StringTable[which]);
GLCD.Puts(buffer);
delay(40);
}
char PollKey()
{
/*char whichkey;
if (digitalRead(escBtn) == HIGH)
{
//whichkey = 1;
}
if (digitalRead(button1) == HIGH)
{
}
if (digitalRead(button2) == HIGH)
{
}
if (digitalRead(button3) == HIGH)
{
}
return whichkey;*/
}
