电子科学综合设计
3.3电路图
3.4源程序 #include
#define uchar unsigned char #define uint unsigned int #define DAdata P0 sbit DA_S1= P2^0; sbit DA_S2= P2^1; 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}; Wave: \
uchar idata lcd_hang2[16]={%uchar code waveTH[]={
0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xf9,0xfc,0xfd,0xfe,0xfe,0xfe,0xff,0xff,0xff,0xff, 0xf6,0xfb,0xfd,0xfb,0xfe,0xff,0xff,0xff,0xff,0xff};
uchar code lcd_hang1[]={\
uchar code waveTL[]={
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电子科学综合设计
0x79,0x3d,0x7e,0x9e,0xbe,0xbf,0xc8,0xcf,0xd4,0xd9, //正弦波频率调整中间值
uchar code sawtooth_tab[]={ c,
0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x550x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x10x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x00x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,0x05,0x06,0x07,0x0x11,0x13,0x15 ,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x20x40,0x43,0x45,0x48,0x4c,0x4e,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x6
,0x51,0x4e,0x4c,0x48,0x45,0x43, e,0x1c,0x1a,0x18,0x16 ,0x15,0x13, 2,0x01,0x00,0x00,0x00,0x00,0x00,0x00, 08,0x09,0x0a,0x0b,0x0d,0x0e,0x10, e,0x30,0x33,0x35,0x38,0x3a,0x3d,
0x80,0x84,0x88,0x8c,0x90,0x94,0x98,0x9c,0xa0,0xa4,0xa8,0xac,0xb0,0xb4,0xb0xc4,0xc8,0xcc,0xd0,0xd4,0xd8,0xdc,0xe0,0xe4,0xe8,0xec,0xf0,0xf4,0xf8,0xfc, };
0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,00xee,0xef,0xf1,0xf2,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0x0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0x0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,0xd6,0xd4,0xd0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99 ,0x96
8,0xbc,0xc0,
0x00,0x04,0x08,0x0c,0x10,0x14,0x18,0x1c,0x20,0x24,0x28,0x2c,0x30,0x34,0x30x44,0x48,0x4c,0x50,0x54,0x58,0x5c,0x60,0x64,0x68,0x6c,0x70,0x74,0x78,0x7
8,0x3c,0x40,
0xe8,0xf4,0xf8,0x7a,0xc7,0xfc,0x23,0x3d,0x53,0x64, //锯齿波频率调整中间值 0x3c,0x1e,0x8f,0x32,0xc7,0x63,0xb1,0xd8,0xec,0xf6}; //方波频率调整中间值
uchar code sine_tab[256]={ ,0xae,0xb1,0xb4,0xb7,0xba,0xbc, xe3,0xe5,0xe7,0xe9,0xea,0xec, ff,0xff,0xff,0xff,0xff,0xff, f4,0xf2,0xf1,0xef,
1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2, ,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,
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电子科学综合设计
9,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80}; void delay(uchar z) {
uint x,y; }
/*void sawtooth_out() {
uchar i;
for(i=255;i>0;i--) {DAdata=i; }*/
void sawtooth_out() { }
void sine_out() { }
void square_out() {
judge=~judge;
if(judge==1) DAdata=0xff; }
/************1602液晶的相关函数*************/
else DAdata=0x00; DA_S1=0; DA_S1=1;
DA_S1=0; DA_S1=1;
DAdata=sine_tab[wavecount++];
if(wavecount>64) wavecount=0; DA_S1=0; DA_S1=1;
DA_S1=0; DA_S1=1;
} for(x=z;x>0;x--) for(y=110;y>0;y--);
DAdata=sawtooth_tab[wavecount++];
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电子科学综合设计
#define lcd_ports P1 sbit rs=P2^2; sbit rw=P2^3; sbit lcden=P2^4;
void write_com(uchar com) { }
void write_date(uchar date) { }
void disp_lcd(uchar addr,uchar *temp1) { }
void init_lcd() {
uchar num; write_com(addr);
delay(1); //延时一会儿??? for(num=0;num<16;num++) { }
write_date(temp1[num]);//或者这样写write_date(*(temp1+num)); delay(1);
rs=1; //置1，表示写数据（在指令所指的地方写数据） lcden=0; lcd_ports=date; delay(5); lcden=1; delay(5); lcden=0;
rs=0; //置零，表示写指令 lcden=0; lcd_ports=com; delay(5); lcden=1; delay(5); lcden=0;
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电子科学综合设计
lcden=0;
rw=0; //初始化一定要设置为零，表示写数据 write_com(0x38); //使液晶显示点阵，为下面做准备 write_com(0x0c); //初始设置 write_com(0x06); //初始设置 write_com(0x01); //清零
write_com(0x80); //使指针指向第一行第一格
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() { } { }
void key_int0() interrupt 0
TH0=THtemp; TL0=TLtemp;
if(waveform==0) sine_out(); else if(waveform==1) sawtooth_out(); else if(waveform==2) square_out(); DA_S2=0; DAdata=0; DA_S1=1; init_lcd();
TMOD=0x01; //设置定时器0方式1为16位工作方式 IT0=1; //设置外部中断0为下降沿触发 ET0=1; //开定时器中断 EX0=1; EA=1; while(1) { }
waveform=0;
void timer0() interrupt 1
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