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#define r1 pin_b4
#define r2 pin_b5
#define r3 pin_b6
#define r4 pin_b7
>>>
int keypad(int sound, int time)
{
output_e(0x01);
if (input (r1))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 1;}
if (input (r2))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 4;}
if (input (r3))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 7;}
if (input (r4))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 10;}
output_e(0x02);
if (input (r1))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 2;}
if (input (r2))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 5;}
if (input (r3))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 8;}
if (input (r4))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 11;}
output_e(0x04);
if (input (r1))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 3;}
if (input (r2))
{
if (sound)
{
beep(100,200,50);}
delay_ms(time);
return 6;}
if (input (r3))
{
if (sound)
{
beep(100,200,50);
}
delay_ms(time);
return 9;}
if (input (r4))
{
if (sound)
{
beep (100,200,50);
}
delay_ms(time);
return 12;}
return 0;
}
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
y este un ejemplo de como lo utilizo en mi programa
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
while(true)
{
switch(keypad(1,100))
{
case 1:
lcd_putc("\f|777| ATRAS ");
lcd_putc("\n Jugar al 777 ");
opcion=1;
break;
case 3:
lcd_putc("\f 777 |ATRAS| ");
lcd_putc("\nRegresar al Menu");
opcion=2;
break;
case 12:
switch(opcion)
{
case 1:
progress2(2,50);
siete();
case 2:
return;
default:
break;
}
default:
break;
}
}