📄 sin.lst
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C51 COMPILER V7.00 SIN 03/25/2005 11:23:08 PAGE 1
C51 COMPILER V7.00, COMPILATION OF MODULE SIN
OBJECT MODULE PLACED IN sin.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE sin.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 /*****************************************************************
2 简易正弦波\三角波\方波发生器
3 使用keil C51,12MHZ晶振,AT89C2051
4 2005.03.25通过测试
5 ******************************************************************/
6 #include "reg51.h"
7 #define uchar unsigned char
8 #define uint unsigned int
9 #define key P3 //键盘口
10 #define dataout P1 //正弦波等数据输出口
11 //
12 /*************************正弦波数据表*****************************/
13 char code sin_tab[256]=
14 {0x80,0x83,0x85,0x88,0x8A,0x8D,0x8F,0x92,
15 0x94,0x97,0x99,0x9B,0x9E,0xA0,0xA3,0xA5,
16 0xA7,0xAA,0xAC,0xAE,0xB1,0xB3,0xB5,0xB7,
17 0xB9,0xBB,0xBD,0xBF,0xC1,0xC3,0xC5,0xC7,
18 0xC9,0xCB,0xCC,0xCE,0xD0,0xD1,0xD3,0xD4,
19 0xD6,0xD7,0xD8,0xDA,0xDB,0xDC,0xDD,0xDE,
20 0xDF,0xE0,0xE1,0xE2,0xE3,0xE3,0xE4,0xE4,
21 0xE5,0xE5,0xE6,0xE6,0xE7,0xE7,0xE7,0xE7,
22 0xE7,0xE7,0xE7,0xE7,0xE6,0xE6,0xE5,0xE5,
23 0xE4,0xE4,0xE3,0xE3,0xE2,0xE1,0xE0,0xDF,
24 0xDE,0xDD,0xDC,0xDB,0xDA,0xD8,0xD7,0xD6,
25 0xD4,0xD3,0xD1,0xD0,0xCE,0xCC,0xCB,0xC9,
26 0xC7,0xC5,0xC3,0xC1,0xBF,0xBD,0xBB,0xB9,
27 0xB7,0xB5,0xB3,0xB1,0xAE,0xAC,0xAA,0xA7,
28 0xA5,0xA3,0xA0,0x9E,0x9B,0x99,0x97,0x94,
29 0x92,0x8F,0x8D,0x8A,0x88,0x85,0x83,0x80,
30 0x7D,0x7B,0x78,0x76,0x73,0x71,0x6E,0x6C,
31 0x69,0x67,0x65,0x62,0x60,0x5D,0x5B,0x59,
32 0x56,0x54,0x52,0x4F,0x4D,0x4B,0x49,0x47,
33 0x45,0x43,0x41,0x3F,0x3D,0x3B,0x39,0x37,
34 0x35,0x34,0x32,0x30,0x2F,0x2D,0x2C,0x2A,
35 0x29,0x28,0x26,0x25,0x24,0x23,0x22,0x21,
36 0x20,0x1F,0x1E,0x1D,0x1D,0x1C,0x1C,0x1B,
37 0x1B,0x1A,0x1A,0x1A,0x19,0x19,0x19,0x19,
38 0x19,0x19,0x19,0x19,0x1A,0x1A,0x1A,0x1B,
39 0x1B,0x1C,0x1C,0x1D,0x1D,0x1E,0x1F,0x20,
40 0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,
41 0x2A,0x2C,0x2D,0x2F,0x30,0x32,0x34,0x35,
42 0x37,0x39,0x3B,0x3D,0x3F,0x41,0x43,0x45,
43 0x47,0x49,0x4B,0x4D,0x4F,0x52,0x54,0x56,
44 0x59,0x5B,0x5D,0x60,0x62,0x65,0x67,0x69,
45 0x6C,0x6E,0x71,0x73,0x76,0x78,0x7B,0x7D};
46 //
47 /***************************三角波数据表**************************/
48 char code thr_tab[256]=
49 {0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
50 0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
51 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
52 0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
53 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,
54 0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
55 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,
C51 COMPILER V7.00 SIN 03/25/2005 11:23:08 PAGE 2
56 0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
57 0xBF,0xBE,0xBD,0xBC,0xBB,0xBA,0xB9,0xB8,
58 0xB7,0xB6,0xB5,0xB4,0xB3,0xB2,0xB1,0xB0,
59 0xAF,0xAE,0xAD,0xAC,0xAB,0xAA,0xA9,0xA8,
60 0xA7,0xA6,0xA5,0xA4,0xA3,0xA2,0xA1,0xA0,
61 0x9F,0x9E,0x9D,0x9C,0x9B,0x9A,0x99,0x98,
62 0x97,0x96,0x95,0x94,0x93,0x92,0x91,0x90,
63 0x8F,0x8E,0x8D,0x8C,0x8B,0x8A,0x89,0x88,
64 0x87,0x86,0x85,0x84,0x83,0x82,0x81,0x80,
65 0x7F,0x7E,0x7D,0x7C,0x7B,0x7A,0x79,0x78,
66 0x77,0x76,0x75,0x74,0x73,0x72,0x71,0x70,
67 0x6F,0x6E,0x6D,0x6C,0x6B,0x6A,0x69,0x68,
68 0x66,0x66,0x65,0x64,0x63,0x62,0x61,0x60,
69 0x5F,0x5E,0x5D,0x5C,0x5B,0x5A,0x59,0x58,
70 0x55,0x55,0x55,0x54,0x53,0x52,0x51,0x50,
71 0x4F,0x4E,0x4D,0x4C,0x4B,0x4A,0x49,0x48,
72 0x44,0x44,0x45,0x44,0x43,0x42,0x41,0x40,
73 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,
74 0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,
75 0x50,0x51,0x52,0x53,0x55,0x55,0x56,0x57,
76 0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,
77 0x60,0x61,0x62,0x63,0x66,0x65,0x66,0x67,
78 0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
79 0x70,0x71,0x72,0x73,0x77,0x75,0x76,0x77,
80 0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F};
81 //
82 /******************************************************************************/
83 uint data THHL=65535; //T1的16位定时器初值
84 uchar data keyword,n=0; //键值存放,查表指针
85 bdata sinthr;
86 sbit sin_thr=sinthr^0; //正弦波\三角波标志(1为正弦波)
87 sbit ww=key^7; // 方波输出口
88 //
89 /*******************************键扫描子函数***********************************/
90 keyscan()
91 {
92 1 keyword=key&0x07;
93 1 if(keyword!=0x07)
94 1 {
95 2 while((key&0x07)!=0x07);//等待键释放
96 2 switch(keyword)
97 2 {
98 3 case 6:{if(THHL>=65235)THHL=65535;else{THHL=THHL+255;}break;}//
99 3 case 5:{if(THHL<=500)THHL=0;else{THHL=THHL-255;}break;}//
100 3 case 3:{sin_thr=~sin_thr;break;}//
101 3 default:{break;}//
102 3 }
103 2 }
104 1 }
105 //
106 /***************************初始化函数****************************************/
107 clearmen()
108 {
109 1 key=0xff,dataout=0x00;THHL=65535;//按键输入状态,波形输出为0
110 1 TH1=THHL/256;TL1=THHL%256;//装定时初值（T1用）
111 1 TMOD=0X11;ET1=1;TR1=1;EA=1;//16 位定时模式,T1中断允许,开定时器,开总中断
112 1 }
113 //
114 /*********************************主函数***************************************/
115 main()
116 {
117 1 clearmen();
C51 COMPILER V7.00 SIN 03/25/2005 11:23:08 PAGE 3
118 1 while(1)
119 1 {
120 2 keyscan();
121 2 }
122 1 }
123 //
124 /***********************************T1中断函数**********************************/
125 void time_intt1(void) interrupt 3
126 {
127 1 EA=0;TR1=0;TH1=THHL/256;TL1=THHL%256;TR1=1;
128 1 if(sin_thr){dataout=sin_tab[n];}
129 1 else {dataout=thr_tab[n];}
130 1 if(n>=255){n=0;}else{ n++;}
131 1 ww=~ww;
132 1 EA=1;
133 1 }
134 //
135 //***********************************结束****************************************//
136
137
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 195 ----
CONSTANT SIZE = 512 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 6 ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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