📄 dds.lst
字号:
C51 COMPILER V7.50 DDS 11/15/2008 18:48:38 PAGE 1
C51 COMPILER V7.50, COMPILATION OF MODULE DDS
OBJECT MODULE PLACED IN DDS.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE DDS.C BROWSE DEBUG OBJECTEXTEND
line level source
1 #include "reg52.h"
2 #define uchar unsigned char
3 #define uint unsigned int
4
5 unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x7
-1,0x00}; //共阴极0~9对应16进制数
6 //=============正弦波数据====================
7 uchar code sin_tab[256]=
8 {
9 0x80, 0x83, 0x86, 0x89, 0x8c, 0x8f, 0x92, 0x95, 0x98, 0x9c, 0x9f, 0xa2, 0xa5, 0xa8, 0xab, 0xae,
10 0xb0, 0xb3, 0xb6, 0xb9, 0xbc, 0xbf, 0xc1, 0xc4, 0xc7, 0xc9, 0xcc, 0xce, 0xd1, 0xd3, 0xd5, 0xd8,
11 0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xed, 0xef, 0xf0, 0xf2, 0xf3, 0xf4,
12 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfc, 0xfd, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff,
13 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfd, 0xfc, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0xf7,
14 0xf6, 0xf5, 0xf3, 0xf2, 0xf0, 0xef, 0xed, 0xec, 0xea, 0xe8, 0xe6, 0xe4, 0xe3, 0xe1, 0xde, 0xdc,
15 0xda, 0xd8, 0xd6, 0xd3, 0xd1, 0xce, 0xcc, 0xc9, 0xc7, 0xc4, 0xc1, 0xbf, 0xbc, 0xb9, 0xb6, 0xb4,
16 0xb1, 0xae, 0xab, 0xa8, 0xa5, 0xa2, 0x9f, 0x9c, 0x99, 0x96, 0x92, 0x8f, 0x8c, 0x89, 0x86, 0x83,
17 0x80, 0x7d, 0x79, 0x76, 0x73, 0x70, 0x6d, 0x6a, 0x67, 0x64, 0x61, 0x5e, 0x5b, 0x58, 0x55, 0x52,
18 0x4f, 0x4c, 0x49, 0x46, 0x43, 0x41, 0x3e, 0x3b, 0x39, 0x36, 0x33, 0x31, 0x2e, 0x2c, 0x2a, 0x27,
19 0x25, 0x23, 0x21, 0x1f, 0x1d, 0x1b, 0x19, 0x17, 0x15, 0x14, 0x12, 0x10, 0xf, 0xd, 0xc, 0xb ,
20 0x9, 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x3, 0x2, 0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0 ,
21 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x2, 0x3, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8 ,
22 0x9, 0xa, 0xc, 0xd, 0xe, 0x10, 0x12, 0x13, 0x15, 0x17, 0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x23,
23 0x25, 0x27, 0x29, 0x2c, 0x2e, 0x30, 0x33, 0x35, 0x38, 0x3b, 0x3d, 0x40, 0x43, 0x46, 0x48, 0x4b,
24 0x4e, 0x51, 0x54, 0x57, 0x5a, 0x5d, 0x60, 0x63, 0x66, 0x69, 0x6c, 0x6f, 0x73, 0x76, 0x79, 0x7c,
25 };
26 //三角波信号数据表
27 uchar code thr_tab[32]=
28 {
29 0x00,0x0f,0x1f,0x2f,0x3f,0x4f,0x5f,0x6f,0x7f,0x8f,0x9f,0xaf,0xbf,0xcf,0xdf,0xef,
30 0xff,0xef,0xdf,0xcf,0xbf,0xaf,0x9f,0x8f,0x7f,0x6f,0x5f,0x4f,0x3f,0x2f,0x1f,0x0f
31 };
32 //-------------------------------------------------------------------------------------------------------
33 //锯齿波信号数据表
34 uchar code jc_tab[33]=
35 {
36 0x00,0x08,0x0f,0x18,0x1f,0x28,0x2f,0x38,0x3f,0x48,0x4f,0x58,0x5f,0x68,0x6f,0x78,
37 0x7f,0x88,0x8f,0x98,0x9f,0xa8,0xaf,0xb8,0xbf,0xc8,0xcf,0xd8,0xdf,0xe8,0xef,0xf8,0xff
38 };
39 //数码管位选控制口定义
40 sbit LED4=P2^7;
41 sbit LED3=P2^6;
42 sbit LED2=P2^5;
43 sbit LED1=P2^4;
44 //按键口申明
45 sbit S1=P2^3;
46 sbit S2=P2^2;
47 sbit S3=P2^1;
48 unsigned char tabArry[4]; //保存显示数据
49 char flag=1; //按键标志，当flag=1时表示没有按下，当flag=0时表示有按键按下
50 int keycount=0; //按键计数
51 unsigned char waveth,wavetl; //用于对定时器付值
52 unsigned int frecount=100; //频率计数
53 unsigned int mbjs; //码表计数，共采32个点
54 //毫秒延时程序
C51 COMPILER V7.50 DDS 11/15/2008 18:48:38 PAGE 2
55 void delayms(int ms)
56 {
57 1 uchar i;
58 1 while(ms--)
59 1 {
60 2 for(i=250;i>0;i--);
61 2 }
62 1 }
63
64 //键盘扫描
65 void keyscan()
66 {
67 1 if(flag==1)
68 1 {
69 2 if(S3==0) //用S3切换波形
70 2 {
71 3 delayms(2); //延时去抖
72 3 if(S3==0) //按键计数,便于切换波形
73 3 {
74 4 flag=0;
75 4 keycount++;
76 4 if(keycount>=4) keycount=0; //四种波形计数4次
77 4 }
78 3 }
79 2
80 2 if(S2==0) //频率加1 处理
81 2 {
82 3 delayms(2);
83 3 if(S2==0)
84 3 {
85 4 flag=0;
86 4 switch(keycount)
87 4 {
88 5 case 0: //正弦波频率加1
89 5 frecount++;
90 5 if(frecount>1000) frecount=0;
91 5 break;
92 5 case 1: //三角波频率加1
93 5 frecount++;
94 5 if(frecount>1000) frecount=0;
95 5 break;
96 5 case 2: //锯齿波频率加1
97 5 frecount++;
98 5 if(frecount>1000) frecount=0;
99 5 break;
100 5 case 3: //方波频率加1
101 5 frecount++;
102 5 if(frecount>1000) frecount=0;
103 5 break;
104 5 }
105 4 waveth=(65536-57603/frecount)/256; //重新计算初值
106 4 wavetl=(65536-57603/frecount)%256;
107 4 }
108 3 }
109 2 if(S1==0) //频率减1 处理
110 2 {
111 3 delayms(2);
112 3 if(S1==0)
113 3 {
114 4 flag=0;
115 4 switch(keycount)
116 4 {
C51 COMPILER V7.50 DDS 11/15/2008 18:48:38 PAGE 3
117 5 case 0: //正弦波频率减1
118 5 frecount--;
119 5 if(frecount<0) frecount=999;
120 5 break;
121 5 case 1: //三角波频率减1
122 5 frecount--;
123 5 if(frecount<0) frecount=999;
124 5 break;
125 5 case 2: //锯齿波频率减1
126 5 frecount--;
127 5 if(frecount<0) frecount=999;
128 5 break;
129 5 case 3: //方波频率减1
130 5 frecount--;
131 5 if(frecount<0) frecount=999;
132 5 break;
133 5 }
134 4 waveth=(65536-57603/frecount)/256; //重新计算初值
135 4 wavetl=(65536-57603/frecount)%256;
136 4 }
137 3 }
138 2
139 2 }
140 1 if(S1!=0 && S2!=0 && S3!=0) flag=1; //判断按键是否弹起
141 1
142 1 }
143 //数据分位
144 void change(char wavetype,unsigned int frequency)
145 {
146 1 tabArry[0]=wavetype; //显示字母，表示波形类型
147 1 tabArry[1]=frequency%1000/100; //百位
148 1 tabArry[2]=frequency%100/10; //十位
149 1 tabArry[3]=frequency%10; //个位
150 1 }
151 //显示函数
152 void display()
153 {
154 1
155 1 switch(keycount)
156 1 {
157 2 case 0: //显示A和正弦波的频率
158 2 change(0x0a,frecount);
159 2 break;
160 2 case 1: //显示b和三角波的频率
161 2 change(0x0b,frecount);
162 2 break;
163 2 case 2: //显示C和锯齿波的频率
164 2 change(0x0c,frecount);
165 2 break;
166 2 case 3: //显示d和方波的频率
167 2 change(0x0d,frecount);
168 2 break;
169 2 }
170 1
171 1 P0 = table[tabArry[0]]; //送最高位段码
172 1 LED1=0; //打开对应的位选控制口
173 1 delayms(2); //显示延时
174 1 LED1=1; //关闭对应的位选控制后显示下一位
175 1
176 1 P0 = table[tabArry[1]];
177 1 LED2=0;
178 1 delayms(2);
C51 COMPILER V7.50 DDS 11/15/2008 18:48:38 PAGE 4
179 1 LED2=1;
180 1
181 1 P0 = table[tabArry[2]];
182 1 LED3=0;
183 1 delayms(2);
184 1 LED3=1;
185 1
186 1 P0 = table[tabArry[3]];
187 1 LED4=0;
188 1 delayms(2);
189 1 LED4=1;
190 1 }
191 void Timerinit()
192 {
193 1 TMOD=0x01; //定时器0方式1
194 1
195 1 //定时器初值计算公式:X=65536-(T/T0)=65536-(f0/f/32)
196 1 TH0=waveth=(65536-57603/frecount)/256; //定时器初值 22.1184MHz
197 1 TL0=wavetl=(65536-57603/frecount)%256;
198 1 EA=1; //开总中断
199 1 ET0=1; //开定时器0中断
200 1 TR0=1; //定时器0开始计数
201 1 }
202 //主函数
203 void main()
204 {
205 1 Timerinit(); //定时器初始化
206 1 while(1)
207 1 {
208 2 keyscan(); //扫描按键
209 2 display(); //显示程序
210 2 }
211 1 }
212
213 void Timer0() interrupt 1
214 {
215 1 TH0=waveth; //重新赋初值
216 1 TL0=wavetl;
217 1 if (keycount==0) //输出正弦波
218 1 {
219 2 P1 = sin_tab[mbjs];
220 2 mbjs+=8; //256点，每隔8点输出一个数据
221 2 if(mbjs>=256)
222 2 {
223 3 mbjs=0;
224 3 }
225 2 }
226 1 else if(keycount==1) //输出三角波
227 1 {
228 2 P1 = thr_tab[mbjs];
229 2 mbjs++;
230 2 if(mbjs>=32)
231 2 {
232 3 mbjs=0;
233 3 }
234 2 }
235 1 else if(keycount==2) //输出锯齿波
236 1 {
237 2 P1 = jc_tab[mbjs];
238 2 mbjs++;
239 2 if(mbjs>=32)
240 2 {
C51 COMPILER V7.50 DDS 11/15/2008 18:48:38 PAGE 5
241 3 mbjs=0;
242 3 }
243 2 }
244 1 else if(keycount==3) //输出方波
245 1 {
246 2 mbjs++;
247 2 if(mbjs>=32)
248 2 {
249 3 mbjs=0;
250 3 }
251 2 else if(mbjs<16) P1=0xff;
252 2 else P1=0x00;
253 2
254 2 }
255 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 966 ----
CONSTANT SIZE = 338 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 13 ----
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -