menu and functions

[nina]

I have tried to do a menu with an lcd on this way:

When program goes to while loop (main program) this call the function menu and after read a key from a keyboard(4x3) go out from menu function and return to while loop (main program)


The problem it is not reading a key from keyboard..

The code I am trying do do is:

[andyfraser]

Hi,

How do you expect menu to return when you have the following :

[nina]

Thank you for your answer...It was a mistake call kbd_init and port_b_pullups ..

But how can I solve the problem to read the key inside the function menu??

tks again

nina

[andyfraser]

Hi,

Well you could do something like :

[nina]

I have tried this but it is not return the value x.
What I want to do is return value x from de menu function to while loop inside the main function..

the code is

#include <16F877.h>
#use delay(clock=4000000)
#fuses XT,NOWDT,NOPROTECT,PUT,NOLVP,NOBROWNOUT
#include <ds1307.c>
#include <flex_lcd420.c>
#include <flex_kbd.c>

char menu(){

char x;
lcd_gotoxy(1,2);
printf(lcd_putc,("1 - A"));
lcd_gotoxy(1,3);
printf(lcd_putc,("2 - B"));
delay_ms(100);
lcd_gotoxy(1,4);
printf(lcd_putc,("3 - C"));

while (true){
x = kbd_getc();
if (x=='1'){
break;
}
continue;
}
return (x);
}

void main() {
char x;
kbd_init();
port_b_pullups(TRUE);
lcd_init();
delay_ms(200);

while (1)
{

menu();
printf(lcd_putc,"choice %c", x);
}
}

[andyfraser]

First, please use the Code button when posting this much code.

Second, you need to assign x to the return value of Menu().

i.e.
x = menu();
printf(....

Andy