标题: 基于STM32的DDS信号发生器源码 [打印本页]

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作者: 99520    时间: 2018-3-16 21:19
标题: 基于STM32的DDS信号发生器源码
基于STM32的DDS信号发生器源码

单片机源程序如下:

1. #include "Init.h"
   
2. #include "key.h"
   
3. #define FCLK_KHZ 100.0
   
4. double FOUT_KHZ = 1.0;
   
5. unsigned char table_addr;
   
6. unsigned int phase_inc;
   
7. unsigned int phase_acc;
   
8. const int fangbo[256]={4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,4095,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
   
9. const unsigned char sin_table[256]= {128,131,134,137,140,143,146,149,152,155,158,162,165,167,170,173,176,179,182,185,188,190,193,196,198,201,203,206,208,211,213,215,218,220,222,224,226,228,230,232,234,235,237,238,240,241,243,244,245,246,248,249,250,250,251,252,253,253,254,254,254,255,255,255,255,255,255,255,254,254,254,253,253,252,251,250,250,249,248,246,245,244,243,241,240,238,237,235,234,232,230,228,226,224,222,220,218,215,213,211,208,206,203,201,198,196,193,190,188,185,182,179,176,173,170,167,165,162,158,155,152,149,146,143,140,137,134,131,128,124,121,118,115,112,109,106,103,100,97,93,90,88,85,82,79,76,73,70,67,65,62,59,57,54,52,49,47,44,42,40,37,35,33,31,29,27,25,23,21,20,18,17,15,14,12,11,10,9,7,6,5,5,4,3,2,2,1,1,1,0,0,0,0,0,0,0,1,1,1,2,2,3,4,5,5,6,7,9,10,11,12,14,15,17,18,20,21,23,25,27,29,31,33,35,37,40,42,44,47,49,52,54,57,59,62,65,67,70,73,76,79,82,85,88,90,93,97,100,103,106,109,112,115,118,121,124};
   
10. const int Triangle[256]={0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,480,512,544,576,608,640,672,704,736,768,800,832,864,896,928,960,992,1024,1056,1088,1120,1152,1184,1216,1248,1280,1312,1344,1376,1408,1440,1472,1504,1536,1568,1600,1632,1664,1696,1728,1760,1792,1824,1856,1888,1920,1952,1984,2016,2048,2080,2112,2144,2176,2208,2240,2272,2304,2336,2368,2400,2432,2464,2496,2528,2560,2592,2624,2656,2688,2720,2752,2784,2816,2848,2880,2912,2944,2976,3008,3040,3072,3104,3136,3168,3200,3232,3264,3296,3328,3360,3392,3424,3456,3488,3520,3552,3584,3616,3648,3680,3712,3744,3776,3808,3840,3872,3904,3936,3968,4000,4032,4064,4095,4064,4032,4000,3968,3936,3904,3872,3840,3808,3776,3744,3712,3680,3648,3616,3584,3552,3520,3488,3456,3424,3392,3360,3328,3296,3264,3232,3200,3168,3136,3104,3072,3040,3008,2976,2944,2912,2880,2848,2816,2784,2752,2720,2688,2656,2624,2592,2560,2528,2496,2464,2432,2400,2368,2336,2304,2272,2240,2208,2176,2144,2112,2080,2048,2016,1984,1952,1920,1888,1856,1824,1792,1760,1728,1696,1664,1632,1600,1568,1536,1504,1472,1440,1408,1376,1344,1312,1280,1248,1216,1184,1152,1120,1088,1056,1024,992,960,928,896,864,832,800,768,736,704,672,640,608,576,544,512,480,448,416,384,352,320,288,256,224,192,160,128,96,64,32};
    
11. extern float SDS_OutData[4];
    
12. extern PIT_InitTypeDef pit1_struct;
    
13. uint8 flag=2;
    
14. uint32 frequency=0;
    
15. uint8 mod=0;//模式选择位
    
16. int mVpp=2000;
    
17. uint8 a=0,b=0,c=0,d=0,e=0,f=0,g=0,h=0,i=0,j=0,k=0,l=0,m=0,n=0,o=0,p=0,q=0,r=0,s=0,t=0,u=0,v=0,w=0,x=0,y=0,z=0;
    
18. void ShowMenu();
    
19. void ShowMod1();
    
20. void ShowMod2();
    
21. void ShowMod3();
    
22. void mod1()//设置pwm波的峰峰值，频率，和占空比
    
23. {
    
24.   if(b==0)//每次进入进行清屏操作
    
25.   {
    
26.     b=1;
    
27.     LCD_CLS();
    
28.     ShowMod1();
    
29.   }
    
30.   uint8 DuliTemp=DuliScan(0);//扫描独立按键
    
31.   uint8 KeyTemp=KeyScan();//扫描矩阵按键
    
32.   if(KeyTemp!=0||DuliTemp==4||DuliTemp==2&&i<2)//矩阵键盘有键盘按下
    
33.   {
    
34.     if(i==0)//先设置频率
    
35.     {
    
36.       if(DuliTemp==2)
    
37.         frequency=frequency/10;//后退一格
    
38.       else if(DuliTemp==4)
    
39.         frequency=10*frequency;//前进一格
    
40.       else frequency=10*frequency+KeyTemp;
    
41.       b=0;
    
42.     }
    
43.     else if(i==1)
    
44.     {
    
45.       if(KeyTemp==1)
    
46.         mVpp-=50;
    
47.       else if(KeyTemp==2)
    
48.         mVpp+=50;
    
49.       else if(KeyTemp==4)
    
50.         mVpp-=1000;
    
51.       else if(KeyTemp==5)
    
52.         mVpp+=1000;
    
53.       b=0;
    
54.     }
    
55.   }
    
56.   if(DuliTemp==1)//S17按下设置下一个
    
57.   {
    
58.     i++;
    
59.     if(i==2)
    
60.     {
    
61.       FOUT_KHZ=frequency/1000.0;
    
62.       phase_inc=(FOUT_KHZ*256/FCLK_KHZ)*256+0.5;
    
63.     }
    
64.   }
    
65.   if(DuliTemp==3)//S17按下代表跳出本系统，显示主菜单、
    
66.   {
    
67.     a=0;//显示主菜单
    
68.     mod=0;//退出系统
    
69.   }
    
70. }
    
71. void mod2()//设置方波的频率和峰峰值
    
72. {
    
73.   if(c==0)//每次进入进行清屏操作
    
74.   {
    
75.     c=1;
    
76.     LCD_CLS();
    
77.     ShowMod2();
    
78.   }
    
79.   uint8 DuliTemp=DuliScan(0);//扫描独立按键
    
80.   uint8 KeyTemp=KeyScan();//扫描矩阵按键
    
81.   if(KeyTemp!=0||DuliTemp==4||DuliTemp==2&&i<2)//矩阵键盘有键盘按下
    
82.   {
    
83.     if(i==0)//先设置频率
    
84.     {
    
85.       if(DuliTemp==2)
    
86.         frequency=frequency/10;//后退一格
    
87.       else if(DuliTemp==4)
    
88.         frequency=10*frequency;//前进一格
    
89.       else frequency=10*frequency+KeyTemp;
    
90.       c=0;
    
91.     }
    
92.     else if(i==1)
    
93.     {
    
94.       if(KeyTemp==1)
    
95.         mVpp-=50;
    
96.       else if(KeyTemp==2)
    
97.         mVpp+=50;
    
98.       else if(KeyTemp==4)
    
99.         mVpp-=1000;
    
100.       else if(KeyTemp==5)
     
101.         mVpp+=1000;
     
102.       c=0;
     
103.     }
     
104.   }
     
105.   if(DuliTemp==1)//S17按下设置下一个
     
106.   {
     
107.     i++;
     
108.     if(i==2)
     
109.     {
     
110.       FOUT_KHZ=frequency/1000.0;
     
111.       phase_inc=(FOUT_KHZ*256/FCLK_KHZ)*256+0.5;
     
112.     }
     
113.   }
     
114.   if(DuliTemp==3)//S17按下代表跳出本系统，显示主菜单、
     
115.   {
     
116.     a=0;//显示主菜单
     
117.     mod=0;//退出系统
     
118.   }
     
119. }
     
120. void mod3()//设置方波的频率和峰峰值
     
121. {
     
122.   if(d==0)//每次进入进行清屏操作
     
123.   {
     
124.     d=1;
     
125.     LCD_CLS();
     
126.     ShowMod3();
     
127.   }
     
128.   uint8 DuliTemp=DuliScan(0);//扫描独立按键
     
129.   uint8 KeyTemp=KeyScan();//扫描矩阵按键
     
130.   if(KeyTemp!=0||DuliTemp==4||DuliTemp==2&&i<2)//矩阵键盘有键盘按下
     
131.   {
     
132.     if(i==0)//先设置频率
     
133.     {
     
134.       if(DuliTemp==2)
     
135.         frequency=frequency/10;//后退一格
     
136.       else if(DuliTemp==4)
     
137.         frequency=10*frequency;//前进一格
     
138.       else frequency=10*frequency+KeyTemp;
     
139.       d=0;
     
140.     }
     
141.     else if(i==1)
     
142.     {
     
143.       if(KeyTemp==1)
     
144.         mVpp-=50;
     
145.       else if(KeyTemp==2)
     
146.         mVpp+=50;
     
147.       else if(KeyTemp==4)
     
148.         mVpp-=1000;
     
149.       else if(KeyTemp==5)
     
150.         mVpp+=1000;
     
151.       d=0;
     
152.     }
     
153.   }
     
154.   if(DuliTemp==1)//S17按下设置下一个
     
155.   {
     
156.     i++;
     
157.     if(i==2)
     
158.     {
     
159.       FOUT_KHZ=frequency/1000.0;
     
160.       phase_inc=(FOUT_KHZ*256/FCLK_KHZ)*256+0.5;
     
161.     }
     
162.   }
     
163.   if(DuliTemp==3)//S17按下代表跳出本系统，显示主菜单、
     
164.   {
     
165.     a=0;//显示主菜单
     
166.     mod=0;//退出系统
     
167.   }
     
168. }
     
169. 
     
170. void ChangeMod()//通过按键切换模式(flag=2,4,6对应mod=1，2,3)  a主菜单清屏
     
171. {
     
172.   uint8 DuliTemp=DuliScan(0);//扫描独立键盘
     
173.   if(DuliTemp==4&&flag<6)//S20选择下移
     
174.   {
     
175.     flag+=2;
     
176.     a=0;
     
177.   }
     
178.   if(DuliTemp==2&&flag>2)//S20选择上移
     
179.   {
     
180.     flag-=2;
     
181.     a=0;
     
182.   }
     
183.   if(DuliTemp==1) //S17确定选择
     
184.   {
     
185.      mod=flag/2;
     
186.   }
     
187.   if(a==0)//进入主菜单
     
188.   {
     
189.     a=1;
     
190.     LCD_CLS();//清屏
     
191.     ShowMenu();
     
192.   }
     
193.   uint8 keytemp=KeyScan();
     
194.   if(keytemp==4)
     
195.     mod=4;
     
196. }
     
197. void main (void)
     
198. {
     
199.   Init();//总的初始化函数
     
200.   KeyInit();  
     
201.   while(1)
     
202.   {
     
203.     phase_inc=(FOUT_KHZ*256/FCLK_KHZ)*256+0.5;
     
204.     ChangeMod();//选择模式
     
205.     if(mod==1)
     
206.     {
     
207.       for(;;)
     
208.       {
     
209.         mod1();
     
210.         if(mod!=1) break;
     
211.       }
     
212.     }
     
213.     else if(mod==2)
     
214.     {
     
215.       for(;;)
     
216.       {
     
217.         mod2();
     
218.         if(mod!=2) break;
     
219.       }
     
220.     }
     
221.     else if(mod==3)
     
222.     {
     
223.       for(;;)
     
224.       {
     
225.         mod3();
     
226.         if(mod!=3) break;
     
227.       }
     
228.     }
     
229.     else
     
230.     {
     
231.       b=0;c=0;d=0;i=0;
     
232.     }
     
233.   }
     
234. }
     
235. void ShowMenu()//显示主菜单
     
236. {
     
237.   LCD_P6x8Str(0,0,"Tell me your choice",0);
     
238.   LCD_P8x16Str(0,flag,"-->",0);//选择指示符
     
239.   LCD_P8x16Str(24,2,"Sin",0);
     
240.   LCD_P8x16Str(24,4,"Pwm",0);
     
241.   LCD_P8x16Str(24,6,"Triangle",0);
     
242. }
     
243. void ShowMod1()//显示设定正弦波界面
     
244. {
     
245.   LCD_P6x8Str(0,0,"Setting PWM data!",0);
     
246.   LCD_P8x16Str(0,1,"f:",0);
     
247.   if(frequency>1000)
     
248.   { LCD_P8x16Str(100,1,"kHz",0);
     
249.     LCD_P8x16float(16,1,frequency*0.001,2,0);
     
250.   }
     
251.   else
     
252.   {
     
253.     LCD_P8x16Str(100,1,"Hz",0);
     
254.     LCD_P8x16s(16,1,frequency,0);
     
255.   }
     
256.   LCD_line_level(16,99,25);
     
257.   LCD_line_level(40,99,49);
     
258.   LCD_P8x16Str(0,4,"Vpp:",0);
     
259.   LCD_P8x16Str(100,4,"mV",0);
     
260.   LCD_P8x16s(35,4,mVpp,0);
     
261.   LCD_line_level(32,99,49);
     
262.   LCD_P6x8Str(0,7,"S17-->set over",0);
     
263. }
     
264. void ShowMod2()//显示设定方波界面
     
265. {
     
266.   LCD_P6x8Str(0,0,"Setting fangbo!",0);
     
267.   LCD_P8x16Str(0,1,"f:",0);
     
268.   if(frequency>1000)
     
269.   { LCD_P8x16Str(100,1,"kHz",0);
     
270.     LCD_P8x16float(16,1,frequency*0.001,2,0);
     
271.   }
     
272.   else
     
273.   {
     
274.     LCD_P8x16Str(100,1,"Hz",0);
     
275.     LCD_P8x16s(16,1,frequency,0);
     
276.   }
     
277.   LCD_line_level(16,99,25);
     
278.   LCD_line_level(40,99,49);
     
279.   LCD_P8x16Str(0,4,"Vpp:",0);
     
280.   LCD_P8x16Str(100,4,"mV",0);
     
281.   LCD_P8x16s(35,4,mVpp,0);
     
282.   LCD_line_level(32,99,49);
     
283.   LCD_P6x8Str(0,7,"S17-->set over",0);
     
284. }
     
285. void ShowMod3()//显示设定三角波界面
     
286. {
     
287.   LCD_P6x8Str(0,0,"Setting Triangle!",0);
     
288.   LCD_P8x16Str(0,1,"f:",0);
     
289.   if(frequency>1000)
     
290.   { LCD_P8x16Str(100,1,"kHz",0);
     
291.     LCD_P8x16float(16,1,frequency*0.001,2,0);
     
292.   }
     
293.   else
     
294.   {
     
295.     LCD_P8x16Str(100,1,"Hz",0);
     
296.     LCD_P8x16s(16,1,frequency,0);
     
297.   }
     
298.   LCD_line_level(16,99,25);
     
299.   LCD_line_level(40,99,49);
     
300.   LCD_P8x16Str(0,4,"Vpp:",0);
     
301.   LCD_P8x16Str(100,4,"mV",0);
     
302.   LCD_P8x16s(35,4,mVpp,0);
     
303.   LCD_line_level(32,99,49);
     
304.   LCD_P6x8Str(0,7,"S17-->set over",0);
     
305. }
     

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作者: yjh12345    时间: 2018-3-29 16:11
我想问一下这个文件夹是怎么用的

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作者: 天蝎    时间: 2018-11-16 15:02
没用工程，差评

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作者: quinn1    时间: 2018-11-16 15:32
么样用也没个说明

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作者: 任路遥    时间: 2019-12-25 10:06
文件已损坏啊

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作者: 787863642    时间: 2021-4-26 14:44
用不了呀 损坏了

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