#include "REG52.H"
#define const_voice_short 40
#define const_key_time 20
#define const_voice_short 40
#define const_key_time 20
void initial_myself();
void initial_peripheral();
void delay_long(unsigned int uiDelayLong);
void T0_time();
void key_service();
void key_scan();
void initial_peripheral();
void delay_long(unsigned int uiDelayLong);
void T0_time();
void key_service();
void key_scan();
sbit key_sr1=P0^1;
sbit key_sr2=P0^2;
sbit key_sr3=P0^3;
sbit key_sr2=P0^2;
sbit key_sr3=P0^3;
sbit key_dr1=P0^4;
sbit key_dr2=P0^5;
sbit key_dr3=P0^6;
sbit key_dr4=P0^7;
sbit key_dr2=P0^5;
sbit key_dr3=P0^6;
sbit key_dr4=P0^7;
sbit beep_dr=P1^5;
unsigned char ucKeyStep=1;
unsigned char ucKeySec=0;
unsigned int uiKeyTimeCnt=0;
unsigned char ucKeyLock=0;
unsigned char ucListRecord=1; //记录当前扫描到了第几列
unsigned int uiVoiceCnt=0;
unsigned int uiKeyTimeCnt=0;
unsigned char ucKeyLock=0;
unsigned char ucListRecord=1; //记录当前扫描到了第几列
unsigned int uiVoiceCnt=0;
void main()
{
initial_myself();
delay_long(100);
initial_peripheral();
while(1)
{
key_service();
}
}
{
initial_myself();
delay_long(100);
initial_peripheral();
while(1)
{
key_service();
}
}
void key_scan()
{
/*
矩阵按键扫描的详细过程:
先输出某一列低电平,其它三列输出高电平,这个时候再分别判断输入的三行,
如果发现哪一行是低电平,就说明对应的按键触发。依次分别输出另外三列中
的某一列为低电平,在分别判断输入的三行,就可以检测完12个按键。
*/
switch(ucKeyStep)
{
case 1: //按键输出低ucListRecord列低电平
if(ucListRecord==1) //第一列低电平
{
key_dr1=0;
key_dr2=1;
key_dr3=1;
key_dr4=1;
}
else if(ucListRecord==2) //第二列低电平
{
key_dr1=1;
key_dr2=0;
key_dr3=1;
key_dr4=1;
}
else if(ucListRecord==3) //第三列低电平
{
key_dr1=1;
key_dr2=1;
key_dr3=0;
key_dr4=1;
}
else if(ucListRecord==4) //第四列低电平
{
key_dr1=1;
key_dr2=1;
key_dr3=1;
key_dr4=0;
}
uiKeyTimeCnt=0; //延时计数器清零
ucKeyStep++; //切换到下一运行步骤
break;
case 2:
uiKeyTimeCnt++;
if(uiKeyTimeCnt>1)
{
uiKeyTimeCnt=0;
ucKeyStep++;
}
break;
case 3:
if(key_sr1==1&&key_sr2==1&&key_sr3==1)
{
ucKeyStep=1; //如果没有按键按下,返回到第一个运行步骤重新开始扫描
ucKeyLock=0;
uiKeyTimeCnt=0;
ucListRecord++; //输出到下一列
if(ucListRecord>4)
{
ucListRecord=1; //依次输出完四列后,继续从第一列开始输出低电平
}
}
else if(ucKeyLock==0)
{
if(key_sr1==0&&key_sr2==1&&key_sr3==1)
{
uiKeyTimeCnt++;
if(uiKeyTimeCnt>const_key_time)
{
uiKeyTimeCnt=0;
ucKeyLock=1;
if(ucListRecord==1)
{
ucKeySec=1;
}
else if (ucListRecord==2)
{
ucKeySec=2;
}
else if (ucListRecord==3)
{
ucKeySec=3;
}
else
{
ucKeySec=4;
}
}
}
else if(key_sr1==1&&key_sr2==0&&key_sr3==1)
{
uiKeyTimeCnt++;
if(uiKeyTimeCnt>const_key_time)
{
uiKeyTimeCnt=0;
ucKeyLock=1;
if(ucListRecord==1)
{
ucKeySec=5;
}
else if (ucListRecord==2)
{
ucKeySec=6;
}
else if (ucListRecord==3)
{
ucKeySec=7;
}
else
{
ucKeySec=8;
}
}
}
else if(key_sr1==1&&key_sr2==1&&key_sr3==0)
{
uiKeyTimeCnt++;
if(uiKeyTimeCnt>const_key_time)
{
uiKeyTimeCnt=0;
ucKeyLock=1;
if(ucListRecord==1)
{
ucKeySec=9;
}
else if (ucListRecord==2)
{
ucKeySec=10;
}
else if (ucListRecord==3)
{
ucKeySec=11;
}
else
{
ucKeySec=12;
}
}
}
break;
}
}
}
{
/*
矩阵按键扫描的详细过程:
先输出某一列低电平,其它三列输出高电平,这个时候再分别判断输入的三行,
如果发现哪一行是低电平,就说明对应的按键触发。依次分别输出另外三列中
的某一列为低电平,在分别判断输入的三行,就可以检测完12个按键。
*/
switch(ucKeyStep)
{
case 1: //按键输出低ucListRecord列低电平
if(ucListRecord==1) //第一列低电平
{
key_dr1=0;
key_dr2=1;
key_dr3=1;
key_dr4=1;
}
else if(ucListRecord==2) //第二列低电平
{
key_dr1=1;
key_dr2=0;
key_dr3=1;
key_dr4=1;
}
else if(ucListRecord==3) //第三列低电平
{
key_dr1=1;
key_dr2=1;
key_dr3=0;
key_dr4=1;
}
else if(ucListRecord==4) //第四列低电平
{
key_dr1=1;
key_dr2=1;
key_dr3=1;
key_dr4=0;
}
uiKeyTimeCnt=0; //延时计数器清零
ucKeyStep++; //切换到下一运行步骤
break;
case 2:
uiKeyTimeCnt++;
if(uiKeyTimeCnt>1)
{
uiKeyTimeCnt=0;
ucKeyStep++;
}
break;
case 3:
if(key_sr1==1&&key_sr2==1&&key_sr3==1)
{
ucKeyStep=1; //如果没有按键按下,返回到第一个运行步骤重新开始扫描
ucKeyLock=0;
uiKeyTimeCnt=0;
ucListRecord++; //输出到下一列
if(ucListRecord>4)
{
ucListRecord=1; //依次输出完四列后,继续从第一列开始输出低电平
}
}
else if(ucKeyLock==0)
{
if(key_sr1==0&&key_sr2==1&&key_sr3==1)
{
uiKeyTimeCnt++;
if(uiKeyTimeCnt>const_key_time)
{
uiKeyTimeCnt=0;
ucKeyLock=1;
if(ucListRecord==1)
{
ucKeySec=1;
}
else if (ucListRecord==2)
{
ucKeySec=2;
}
else if (ucListRecord==3)
{
ucKeySec=3;
}
else
{
ucKeySec=4;
}
}
}
else if(key_sr1==1&&key_sr2==0&&key_sr3==1)
{
uiKeyTimeCnt++;
if(uiKeyTimeCnt>const_key_time)
{
uiKeyTimeCnt=0;
ucKeyLock=1;
if(ucListRecord==1)
{
ucKeySec=5;
}
else if (ucListRecord==2)
{
ucKeySec=6;
}
else if (ucListRecord==3)
{
ucKeySec=7;
}
else
{
ucKeySec=8;
}
}
}
else if(key_sr1==1&&key_sr2==1&&key_sr3==0)
{
uiKeyTimeCnt++;
if(uiKeyTimeCnt>const_key_time)
{
uiKeyTimeCnt=0;
ucKeyLock=1;
if(ucListRecord==1)
{
ucKeySec=9;
}
else if (ucListRecord==2)
{
ucKeySec=10;
}
else if (ucListRecord==3)
{
ucKeySec=11;
}
else
{
ucKeySec=12;
}
}
}
break;
}
}
}
void key_service() //第三区,按键服务应用程序
{
switch(ucKeySec)
{
case 1:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 2:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
{
switch(ucKeySec)
{
case 1:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 2:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 3:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 4:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 5:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 6:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 7:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 8:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 9:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 10:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 11:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 11:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
case 12:
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
}
}
uiVoiceCnt=const_voice_short;
ucKeySec=0;
break;
}
}
void T0_time() interrupt 1
{
TF0=0;
TR0=0;
key_scan();
if(uiVoiceCnt!=0)
{
uiVoiceCnt--;
beep_dr=0;
}
else
{
;
beep_dr=1;
}
TH0=0xf8;
TL0=0x2f;
TR0=1;
}
{
TF0=0;
TR0=0;
key_scan();
if(uiVoiceCnt!=0)
{
uiVoiceCnt--;
beep_dr=0;
}
else
{
;
beep_dr=1;
}
TH0=0xf8;
TL0=0x2f;
TR0=1;
}
void delay_long(unsigned int uiDelayLong)
{
unsigned int i;
unsigned int j;
for(i=0;i<uiDelayLong;i++)
for(j=0;j<500;j++)
;
}
{
unsigned int i;
unsigned int j;
for(i=0;i<uiDelayLong;i++)
for(j=0;j<500;j++)
;
}
void initial_myself()
{
beep_dr=1;
TMOD=0x01;
TH0=0xf8;
TL0=0x2f;
}
{
beep_dr=1;
TMOD=0x01;
TH0=0xf8;
TL0=0x2f;
}
void initial_peripheral()
{
EA=1;
ET0=1;
TR0=1;
}
{
EA=1;
ET0=1;
TR0=1;
}