📄 频率计单片机.c
字号:
default: zz=8;break;
}
}
}
control_readkey = !control_readkey;
}
void ceping(void)
{ float F1, F2;unsigned long N1,N2;
g=0;CLR1();TF=0;
START=0;
EA=1;
IT0=1;
EX0=1;
N1=0;N2=0;coutcp=0;START=1;do{}while(coutcp<gatetime);START=0;gatecont=0;//ADRB=0;ADRA=0;
do{}while((g==0)&&(gatecont<10000));//xian++;
if(g==1)
{
ADRB=0;ADRA=0;N1=DATA1;N2=DATA2;
ADRB=0;ADRA=1;N1+=DATA1*256;N2+=DATA2*256;
ADRB=1;ADRA=0;N1+=DATA1*65536;N2+=DATA2*65536;
ADRB=1;ADRA=1;N1+=DATA1*16777216;N2+=DATA2*16777216;//xian=DATA2;
//ADRB=0;ADRA=1;ADRB=0;ADRA=0;//xian=DATA2;
F1=N1;F2=N2-1;
FF=(50000000*F2)/F1;
//else FF=N3/50000000;
if(zz==1) {xian=FF;c=1;}TF=1;START=1;CLR1();
}
else gatetime=8500;
}
void zhouqi(void)
{
ceping();
TT=1/FF;
if(zz==2) {xian=TT;c=1;}
}
void maikuan(void)
{
long N4=0;
float F4;
bbb=0;
a=0;
CLR1();TF=1;
EA=1;
IT1=1;
EX1=1;
do{}while((a==0)&&(bbb==0));//xian++;
ADRB=0;ADRA=0;N4+=DATA1;
ADRB=0;ADRA=1;N4+=DATA1*256;
ADRB=1;ADRA=0;N4+=DATA1*65536;
ADRB=1;ADRA=1;N4+=DATA1*16777216;
F4=N4;
WW=F4/50000000;
if(zz==3) {xian=WW;c=1;}
}
void zhankong(void)
{
float WF,WZ;
START=1;TF=1;
maikuan();
WZ=WW;//START=0;maikuan();
zhouqi();
WF=TT;
ZKB=WZ/WF;
xian=ZKB;c=1;
}
void main(void)
{
CLR=0;
START=0;
CHOICE=1;
TMOD = 0x01; //
TH0 = -2720/256; //定时器中断时间间隔 4ms
TL0 = -2720%256;
TCON = 0x10;
ET0 = 1;
EA = 1;initial_lcd();//write_str_noclear (zifu1,6,0 ,16);
while(1)
{
//zz=1;
if(zz==1) //xian=543;
{if(zz!=ji)
{gailcd();ji=zz;c=0;write_str_noclear (zifu10,7,1 ,10);
if(gate==10)
{write_char (hehe[1],7,12 ) ;write_char (hehe[0],7,13 ) ;}
else
write_char (hehe[gate],7,13 ) ;
}
ceping();}
else if(zz==2) //xian=987;
{if(zz!=ji)
{gailcd();ji=zz;c=0;write_str_noclear (zifu11,7,1 ,16);}
zhouqi();}
else if(zz==3) //xian=75656;
{if(zz!=ji)
{gailcd();ji=zz;c=0;write_str_noclear (zifu11,7,1 ,16);}
START=1;
maikuan();}
else if(zz==4)
{if(zz!=ji)
{gailcd();ji=zz;c=0;write_str_noclear (zifu11,7,1 ,16);}
zhankong();}
else if(zz==5)
{if(zz!=ji)
{gailcd();ji=zz;c=0;write_str_noclear (zifu11,7,1 ,16);}
cefu();}
else if(zz==6)
{CHOICE=!CHOICE;gailcd();zz=jy;c=0;}
else if(zz==8)
xian=7805;
}
}
/***************************************************
键盘扫描函数
原型: void readkey(void);
功能: 当获得有效按键时,令getkey=1，keynum为按键值
****************************************************/
void readkey(void)
{
uchar M_key = 0;
first_row = 0;
second_row = 0;
M_key = KEY;
if(M_key != 0xff) //如果有连续两次按键按下，认为有有效按键按下。消除按键抖动
{
if(first_getkey == 0)
{
first_getkey = 1;
}
else //当有有效按键按下时，进一步识别是哪一个按键
{
if(keyon == 0) //防止按键冲突，当还有未释放的按键时不对其它按键动作响应
{
first_row = 0; //扫描第一行按键
second_row = 1;
M_key = KEY;
if(M_key != 0xff)
{
switch(M_key)
{
case 0xfe:
keynum = 0x00;
break;
case 0xfd:
keynum = 0x01;
break;
case 0xfb:
keynum = 0x02;
break;
case 0xf7:
keynum = 0x03;
break;
case 0xef:
keynum = 0x04;
break;
case 0xdf:
keynum = 0x05;
break;
case 0xbf:
keynum = 0x06;
break;
case 0x7f:
keynum = 0x07;
break;
}
}
else
{
second_row = 0; //扫描第二行按键
first_row = 1;
M_key = KEY;
switch(M_key)
{
case 0xfe:
keynum = 0x08;
break;
case 0xfd:
keynum = 0x09;
break;
case 0xfb:
keynum = 0x0a;
break;
case 0xf7:
keynum = 0x0b;
break;
case 0xef:
keynum = 0x0c;
break;
case 0xdf:
keynum = 0x0d;
break;
case 0xbf:
keynum = 0x0e;
break;
case 0x7f:
keynum = 0x0f;
break;
}
}
getkey = 1; //获得有效按键数值
keyon = 1; //防止按键冲突，当获得有效按键时将其置1
}
}
}
else
{
first_getkey = 0;
keyon = 0; //防止按键冲突，当所有的按键都释放时将其清0
}
}
void leddisp(void)
{
switch(lednum) //选择需要显示的数码位
{
case 0:
LED1 = segtab[led[0]];
break;
case 1:
LED2 = segtab[led[1]];
break;
case 2:
LED3 = segtab[led[2]];
break;
case 3:
LED4 = segtab[led[3]];
break;
case 4:
LED5 = segtab[led[4]];
break;
case 5:
LED6 = segtab[led[5]];
break;
case 6:
LED7 = segtab[led[6]];
break;
case 7:
LED8 = segtab[led[7]];
break;
}
if(lednum == 0) //更新需要现实的数码位
{
lednum = 7;
}
else
{
lednum = lednum-1;
}
}
void delay(uint8 time_nop)
{
uint8 i;
for(i=0;i<time_nop;i++)
{
_nop_();
}
}
void lcdlon_off(uchar D)
{
lcdlCommand = D;
_nop_();
}
void setlstartx(uchar D)
{
lcdlCommand = D;
_nop_();
}
void setlstarty(uchar D)
{
lcdlCommand = D;
_nop_();
}
void setlstartline(uchar D)
{
lcdlCommand = D;
_nop_();
}
void lcdron_off(uchar D)
{
lcdrCommand = D;
_nop_();
}
void setrstartx(uchar D)
{
lcdrCommand = D;
_nop_();
}
void setrstarty(uchar D)
{
lcdrCommand = D;
_nop_();
}
void setrstartline(uchar D)
{
lcdrCommand = D;
_nop_();
}
uchar GetIndex(uchar szText)
{
uchar code TAB[libleng] = {' ','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q'
,'R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q'
,'r','s','t','u','v','w','x','y','z','`','1','2','3','4','5','6','7','8','9','0','-','=','\\','~','!','@','#','$','%','^','&','*','(',')','_'
,'+','|','[',']',';','\'',',','.','/','{','}',':','"','<','>','?'};
uchar i;
uchar j = 0;
for(i=0;i<=libleng;i++)
{
if(szText==TAB[i])
{
j = 1;
return i;
break;
}
}
if(j==0)
{
return 0x00;
}
}
void lcdlwrite(uchar D)
{
lcdDl = D;
_nop_();
}
void lcdrwrite(uchar D)
{
lcdDr = D;
_nop_();
}
/**********************************************************
LCD清屏
原型: void clear_lcd(void);
功能： 将LCD清屏
**********************************************************/
void clear_lcd(void)
{
uchar i,j;
for(i=0;i<8;i++)//左边8行
{
setlstartx(strat_xaddr + i);
for(j=0;j<64;j++)//左边64列 8*8
{
setlstarty(strat_yaddr+j);
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
lcdlwrite(0x00);//清除
}
_nop_();
}
for(i=0;i<8;i++)//清除右边
{
setrstartx(strat_xaddr + i);
for(j=0;j<64;j++)
{
setrstarty(strat_yaddr+j);
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
lcdrwrite(0x00);
}
_nop_();
}
}
/************************************************************************************
LCD初始化
原型: void initial_lcd(void);
功能： 将LCD初始化显示"National University of defence technology's ASIC R&D Center"
************************************************************************************/
void initial_lcd(void)
{
setlstartline(strat_dispaddr);//设置显示初始行
setrstartline(strat_dispaddr);
lcdlon_off(0x3F);//LCD两屏都打开
lcdron_off(0x3F);
clear_lcd();
if(CHOICE==0)
write_str_noclear (zifu6,3,1 ,16);
else
write_str_noclear (zifu7,3,1,16);
write_str_noclear (zifu9,5,1 ,13);write_char (hehe[1],5,14) ;
}
void write_str_noclear (uchar worddata[],uchar hang,uchar lie ,uchar len) //对LCD进行字符串写入
//hang 1-8 ,lie1-16
{
uchar i=0;//8*8字符数
uchar j=0;//8位数据中第几位
uchar k=0;//行数
uchar index=0;
uchar z=0;
setlstartline(strat_dispaddr);//设置显示初始行
setrstartline(strat_dispaddr);
for(i=lie-1;i<len+lie-1;i++)//从指定列写入
{
index=GetIndex(worddata[i-lie+1]);//
z=i%8;
k=i/16;
if(k>7) k=0; //不能超过8行
if(i%16<8)//左边
{
setlstartx(strat_xaddr+k+hang-1);//设置行
for(j=0;j<8;j++)
{_nop_();
setlstarty(strat_yaddr+8*z+j);
lcdlwrite(ASCII[index][j]);
}
_nop_();
}
if(i%16>=8)
{
setrstartx(strat_xaddr+k+hang-1);
for(j=0;j<8;j++)
{_nop_();
setrstarty(strat_yaddr+8*z+j);
lcdrwrite(ASCII[index][j]);
}
_nop_();
}
}
}
void write_char (uchar datan,uchar hang,uchar lie ) //对LCD进行字符写入
//hang 1-8 ,lie1-16
{
uchar i=0;//8*8字符数
uchar j=0;//8位数据中第几位
uchar k=0;//行数
uchar index=0;
uchar z=0;
setlstartline(strat_dispaddr);//设置显示初始行
setrstartline(strat_dispaddr);
for(i=lie-1;i<lie;i++)//从指定列写入
{
index=GetIndex(datan);//
z=i%8;
k=i/16;
if(k>7) k=0; //不能超过8行
if(i%16<8)//左边
{
setlstartx(strat_xaddr+k+hang-1);//设置行
for(j=0;j<8;j++)
{_nop_();
setlstarty(strat_yaddr+8*z+j);
lcdlwrite(ASCII[index][j]);
}
_nop_();
}
if(i%16>=8)
{
setrstartx(strat_xaddr+k+hang-1);
for(j=0;j<8;j++)
{_nop_();
setrstarty(strat_yaddr+8*z+j);
lcdrwrite(ASCII[index][j]);
}
_nop_();
}
}
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