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ad
Joined: 24 Mar 2015
Posts: 14
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| MENU |
 Posted: Wed Jul 15, 2015 3:10 am |
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I'm doing a menu with submenu inside. The function is performed as follows:
First, you have the option 1. MENU or 2.ENVIAR DATA.
If you press 1, you have the option to select 4 variables, if you press one of the four variables, you find two options, 1. GET DATA, # . BACK.
| Code: |
while(TRUE){ //Bucle infinito siempre consulta el teclado
k=kbd_getc();
if (k!=0 & j!=k){ //Comprueba que la tecla presionada no sea la misma que se presiono la ultima vez
switch(Nivelmenu){
case 0:
switch (k){ //Menu principal
case '1':
Mostrar_menu_de_variables();
Nivelmenu=1;
break;
case '2':
EnviarDatos();
break;
default:
break;
}
break;
case 1: //Menu de variables, se muestran todas las variables para que se seleccione una
switch (k){
case '1':
Mostrar_menu_var();
variable=1;
Nivelmenu=2;
break;
case '2':
Mostrar_menu_var();
variable=2;
Nivelmenu=2;
break;
case '3':
Mostrar_menu_var();
variable=3;
Nivelmenu=2;
break;
case '4':
Mostrar_menu_var();
variable=4;
Nivelmenu=2;
break;
default:
break;
}
break;
case 2: // Menu de cada variable, todas tienen 2 opciones, obtener datos y salir al menu anterior
switch (k){
case '1':
Obtenerdatos (variable); //Segun la variable escogida
Nivelmenu=1; //Vuelve al menu de seleccionar las variables
Mostrar_menu_de_variables(); //Muestra menu variables
break;
case '#': //Se muestra el menu anterior y se vuelve a los botones del anterior tmb
Mostrar_menu_de_variables(); //Muestra menu variables
Nivelmenu=1; //Vuelve al menu de seleccionar las variables
break;
default:
break;
}
break;
default: // Caso unico que por algun problema se llegue este punto, poniendo a 0 y el nivel y mostrando el menu inicial
Mostrar_menu_inicial();
Nivelmenu=0;
break;
}
}
j=k; //Para que no entre de nuevo si se mantiene presionado la tecla
}
}
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It leaves me right up here, as you can see in the code.
But what I want is that when the data showing the LCD, me an option to stop viewing data appears, EXIT option. |
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guy
Joined: 21 Oct 2005
Posts: 291
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| Posted: Sat Jul 18, 2015 9:33 am |
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Hi! My favorite way of doing menus is to have a separate piece of code that handles each menu and submenus. This is instead of having one loop and inside it determine which menu/submenu we are in. There are pros and cons.
So my implementation would be
| Code: | while(1) {
show main menu
wait for key
if(key==1) {
key=0; // clear last keypress
while(key!=ESCAPE) {
show submenu, wait for key, handle submenu
}
}
if(key==2) {
key=0; // clear last keypress
while(key!=ESCAPE) {
show submenu, wait for key, handle submenu
}
}
} |
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