单片机程序存在C141语法错误 -

#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define DAdata P0
#define lcd_ports P1
void delay(uchar z);
void triangle_out();
void sine_out();
void square_out();
void write_com(uchar com);
void write_date(uchar date);
void disp_lcd(uchar addr,uchar *temp1);
void init_lcd();
//void timer0() interrupt 1; //中断子函数不须要函数申明
//void key_int0() interrupt 0; //中断子函数不须要函数申明
sbit DA_S1= P2^0;
sbit DA_S2= P2^1;
sbit rs=P2^2;
sbit rw=P2^3;
sbit lcden=P2^4;
sbit key= P3^2;
uchar wavecount;
uchar THtemp,TLtemp;
uchar judge=1;
uchar waveform;
uchar code freq_unit[3]={10,50,200};
uchar idata wavefreq[3]={1,1,1};
uchar code lcd_hang1[]={"Sine Wave" "Triangle Wave" "Square Wave" "Select Wave:" "press No.1 key!"};
uchar idata lcd_hang2[16]={"f=Hz"};
uchar code waveTH[]={
0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
uchar code waveTL[]={
0x06,0x8a, 0x10,0x4e, 0x78,0x93, 0xa8,0xb3, 0xbe,0xc6,
0xac,0xde,0x48,0x7a,0x99,0xaf,0xbb,0xc8,0xd0,0xde,
0xff,0x8e,0x5a,0x41,0x32,0x28,0x20,0x1b,0x17,0x0e};
uchar code triangle_tab[]={
0x00,0x08,0x10,0x18,0x20,0x28,0x30,0x38,0x40,0x48,0x50,0x58,0x60,0x68,0x70,0x78,
0x80,0x88,0x90,0x98,0xa0,0xa8,0xb0,0xb8,0xc0,0xc8,0xd0,0xd8,0xe0,0xe8,0xf0,0xf8,0xff,
0xf8,0xf0,0xe8,0xe0,0xd8,0xd0,0xc8,0xc0,0xb8,0xb0,0xa8,0xa0,0x98,0x90,0x88,0x80,
0x78,0x70,0x68,0x60,0x58,0x50,0x48,0x40,0x38,0x30,0x28,0x20,0x18,0x10,0x08,0x00};
uchar code sine_tab[256]={
0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc, 0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,
0xee,0xef,0xf1,0xf2,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,
0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,
0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99 ,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,
0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51,0x4e,0x4c,0x48,0x45,0x43,
0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16 ,0x15,0x13,
0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,
0x11,0x13,0x15 ,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,
0x40,0x43,0x45,0x48,0x4c,0x4e,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80};
void delay(uchar z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void triangle_out()
{
DAdata=triangle_tab[wavecount++];
if(wavecount>64) wavecount=0;
DA_S1=0;
DA_S1=1;
}
void sine_out()
{
DAdata=sine_tab[wavecount++];
DA_S1=0;
DA_S1=1;
}
void square_out()
{
judge=~judge;
if(judge==1) DAdata=0xff;
else DAdata=0x00;
DA_S1=0; //打开位输入寄存器
DA_S1=1; //关闭位输入寄存器
}
/************1602液晶的相关函数*************/
void write_com(uchar com)
{
rs=0;
lcden=0;
lcd_ports=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_date(uchar date)
{
rs=1;
lcden=0;
lcd_ports=date;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void disp_lcd(uchar addr,uchar *temp1)
{
uchar num;
write_com(addr);
delay(1);
for(num=0;num<16;num++)
{
write_date(temp1[num]);
delay(1);
}
}
void init_lcd()
{
lcden=0;
rw=0; //初始化一定要设置为零，表示写数据
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
write_com(0x80);
disp_lcd(0x80,&lcd_hang1[3*16]); //在第一行显示
disp_lcd(0xc0,&lcd_hang1[4*16]); //在第二行显示
}
/********************1602液晶函数声明结束*********************/
void main()
{
uchar i=0;
DA_S2=0;
DAdata=0;
DA_S1=1;
init_lcd();
waveform=0;
TMOD=0x01; //设置定时器为位工作方式
IT0=1;
ET0=1;
EX0=1;
EA=1;
while(1) //主循环
{
}
}
void timer0() interrupt 1
{
TH0=THtemp;
TL0=TLtemp;
if(waveform==0) sine_out();
else if(waveform==1) triangle_out();
else if(waveform==2) square_out();
}
void key_int0() interrupt 0
{
uchar keytemp;
uint total_freq; //总频率
EA=0; TR0=0; //关总中断与定时器
delay(5);
if(key==0) //确实有按键按下而引发中断
{
keytemp=P3&0xf0; //获取P3口高四位的值
switch(keytemp)
{
case 0xe0: //选择波形
waveform++;
if(waveform>2) waveform=0;
break;
case 0xd0: //频率按规定单位依次增加
wavefreq[waveform]++; // <---------???
if(wavefreq[waveform]>10) wavefreq[waveform]=1;
break;
case 0xb0: //频率按规定单位依次衰减
wavefreq[waveform]--; // <---------????
if(wavefreq[waveform]<1) wavefreq[waveform]=10;
break;
case 0x70:
DA_S2=1; //使DAC寄存器关闭
break;
}
THtemp=waveTH[waveform*10+(wavefreq[waveform]-1)]; //方括号中选取第几个数后，并把该值赋给T_temp
TLtemp=waveTL[waveform*10+(wavefreq[waveform]-1)];
total_freq= wavefreq[waveform] * freq_unit[waveform]; //求输出频率（个数*单位）
lcd_hang2[5]=total_freq%10+0x30; //在液晶中显示个位，(0x30 在液晶显示中表示数字)
total_freq/=10; lcd_hang2[4]=total_freq%10+0x30; //在液晶中显示时十位
total_freq/=10; lcd_hang2[3]=total_freq%10+0x30; //在液晶中显示时百位
total_freq/=10; lcd_hang2[2]=total_freq%10+0x30; //在液晶中显示时千位
disp_lcd(0x80,&lcd_hang1[waveform*16]); //在第一行显示
disp_lcd(0xc0,lcd_hang2); //在第二行显示
}
EA=1; TR0=1; //开启总中断与定时器
}

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