#include "reg52.h"
#define uint unsigned int
#define uchar unsigned char
#define KEYPORT P1
#define SMGPORT P0
#define delayValue 10
sbit buzzer=P2^3;
uint value=0;
uchar code dis[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
uint code tone[8]={0xfc44,0xfcac,0xfd09,0xfd34,0xfd82,0xfdc8,0xfe06,0xfe22};
uchar code button_Sel[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
void Button_Scan(void);
void handler(void);
void delay_ms(uint k);
void delay_ms(uint k)
{
uint j=0,i=0;
for(j=0;j<k;j++)
for(i=0;i<118;i++);
}
void Button_Scan(void)
{
KEYPORT=0xff;
if(KEYPORT==button_Sel[0])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[0])
{
value=tone[0];
SMGPORT=dis[1];
}}
if(KEYPORT==button_Sel[1])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[1])
{
value=tone[1];
SMGPORT=dis[2];
}}
if(KEYPORT==button_Sel[2])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[2])
{
value=tone[2];
SMGPORT=dis[3];
}}
if(KEYPORT==button_Sel[3])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[3])
{
value=tone[3];
SMGPORT=dis[4];
}}
if(KEYPORT==button_Sel[4])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[4])
{
value=tone[4];
SMGPORT=dis[5];
}}
if(KEYPORT==button_Sel[5])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[5])
{
value=tone[5];
SMGPORT=dis[6];
}}
if(KEYPORT==button_Sel[6])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[6])
{
value=tone[6];
SMGPORT=dis[7];
}}
if(KEYPORT ==button_Sel[7])
{
delay_ms(delayValue);
if(KEYPORT==button_Sel[7])
{
value=tone[7];
SMGPORT=dis[8];
}}}
void Handler(void)
{
if(KEYPORT==0xff)
{
P2=0xff;
TR1=0;
buzzer=1;
}
else
{
TR1=1;
}}
void main(void)
{
ET1=1;
TMOD |=0x10;
TH1=(65536-500)/256;
TL1=(65536-500)%256;
P0=0x00;
EA=1;
while(1)
{
Button_Scan();
Handler();
}}
void Time1_Handler(void) interrupt 3 using 1
{
buzzer=~buzzer;
TH1=value/256;
TL1=value%256;
}
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