深入理解ARM體系架構(gòu)（S3C6410）---ad轉(zhuǎn)化實(shí)例

本實(shí)例是把采集的ad數(shù)據(jù)轉(zhuǎn)化后顯示在lcd屏上，在這直接把自己調(diào)試好的源碼貼出來

本文引用地址：http://www.ex-cimer.com/article/201611/317830.htm

ad轉(zhuǎn)化器相關(guān)代碼：

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1. voidadc_init()
2. {
4. charpreScaler=66500000/2500000-1;//PCLK=66M
5. rADCCON=(1<<14)|(preScaler<<6)|(0<<3)|(0<<2);//通道AIN0
6. //rADCCON=0x44c1;//通道AIN0
7. }
8. intread_adc()
9. {
11. rADCCON|=0x01;//startADC
13. while(rADCCON&0x1);//checkifEnable_startislow
16. while(!(rADCCON&0x8000));//checkifEC(EndofConversion)flagishigh
18. return((int)rADCDAT0&0x3ff);
19. }
21. voiddelay_adc()
22. {
23. inti,j;
24. for(i=0;i<10000000;i++)
25. for(j=0;j>10000000;j++);
26. }

lcd相關(guān)代碼：

初始化子程序：

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1. voidLCD_Init(void)
2. {
4. //設(shè)置LCD調(diào)光
5. //rGPFCON|=(1<<30);//設(shè)置LCD調(diào)光管腳GPF15(PWM1)為輸出
6. //rGPFDAT|=(1<<15);//rGPFDAT=0x00002000;
7. //rGPFPUD&=~(1<<30);//rGPFPUD=0x00000000;
9. //設(shè)置VD0~15
10. rGPICON=0xaaaaaaaa;//設(shè)置GPI0~15為L(zhǎng)CDVD0~15
11. rGPIPUD=0xffffffff;
15. //設(shè)置VD16~23和HSYNC、VSYNC、VDEN、VCLK
16. rGPJCON=0x00aaaaaa;
17. rGPJPUD=0xffffffff;
18. rWINCON0&=~(1<<0);
20. //LCD寄存器設(shè)置
21. rSPCON&=(~0x3);
22. rSPCON|=(1<<0);//設(shè)置RGBI/F配置
23. rMIFPCON&=~(1<<3);//設(shè)置LCD支路為一般模式
25. rVIDCON0=(0<<29)|(0<<26)|(0<<17)|(1<<16)|(9<<6)|(0<<5)|(1<<4)|(0<<3)|(0<<2);
26. rVIDCON1=1<<7;//1=RGB類型LCD設(shè)備在VCLK上升沿得到視頻數(shù)據(jù)
28. //設(shè)置屏的時(shí)序
29. rVIDTCON0=(0x00<<16)|(0x00<<8)|(0x02<<0);
30. rVIDTCON1=(0x2d<<16)|(0x04<<8)|(0x06<<0);
31. rVIDTCON2=(271<<11)|(479<<0);
33. //設(shè)置窗口格式
34. rWINCON0=11<<2;//設(shè)置24BPP
36. //設(shè)置窗口位置
37. rVIDOSD0A=(0<<11)|(0<<0);
38. rVIDOSD0B=(479<<11)|(271<<0);
39. rVIDOSD0C=(((480*272)&0xffffff)<<0);//4.3屏幕分辨率480*272
41. //設(shè)置Window1的開始和結(jié)束的緩存地址與地址在內(nèi)存中的存放地址以及緩存的大小
42. rVIDW00ADD0B0=((addr>>24)<<24)|(addr&0xffffff);
43. rVIDW00ADD1B0=(addr&0xffffff+480*272);
44. rVIDW00ADD2=(0<<13)|(480<<0);
46. //設(shè)置抖動(dòng)
47. rDITHMODE=(1<<5)|(1<<3)|(1<<1)|(1<<0);
49. //開顯示
50. rVIDCON0|=(3<<0);
51. rWINCON0|=(1<<0);
52. }

lcd字符顯示子程序：

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1. voidPaint_text(unsignedintx,unsignedinty,unsignedintcolor,unsignedcharch[],unsignedintlengx,intlengy){
2. inti,j,test,t=-1;
3. for(i=0;i<lengy;i++){
4. for(j=0;j<lengx;j++){
5. if(j%8==0){
6. test=0x80;
7. t++;
8. }
9. if(ch[t]&test)
10. LCD_BUFFER[y+i][x+j]=color;
11. else
12. LCD_BUFFER[y+i][x+j]=0xffffff;
14. test>>=1;
15. }
16. }
17. }

頭文件中字符數(shù)據(jù)定義：

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1. unsignedcharcharnum[10][16]={
2. {0x00,0x00,0x00,0x18,0x24,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18,0x00,0x00},
3. {0x00,0x00,0x00,0x10,0x70,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x7C,0x00,0x00},
4. {0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x04,0x04,0x08,0x10,0x20,0x42,0x7E,0x00,0x00},
5. {0x00,0x00,0x00,0x3C,0x42,0x42,0x04,0x18,0x04,0x02,0x02,0x42,0x44,0x38,0x00,0x00},
6. {0x00,0x00,0x00,0x04,0x0C,0x14,0x24,0x24,0x44,0x44,0x7E,0x04,0x04,0x1E,0x00,0x00},
7. {0x00,0x00,0x00,0x7E,0x40,0x40,0x40,0x58,0x64,0x02,0x02,0x42,0x44,0x38,0x00,0x00},
8. {0x00,0x00,0x00,0x1C,0x24,0x40,0x40,0x58,0x64,0x42,0x42,0x42,0x24,0x18,0x00,0x00},
9. {0x00,0x00,0x00,0x7E,0x44,0x44,0x08,0x08,0x10,0x10,0x10,0x10,0x10,0x10,0x00,0x00},
10. {0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x24,0x18,0x24,0x42,0x42,0x42,0x3C,0x00,0x00},
11. {0x00,0x00,0x00,0x18,0x24,0x42,0x42,0x42,0x26,0x1A,0x02,0x02,0x24,0x38,0x00,0x00}};
16. unsignedcharcharnumc[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1C,0x22,0x40,0x40,0x40,0x22,0x1C,0x00,0x00};
17. unsignedcharcharnumo[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x42,0x42,0x42,0x42,0x42,0x3C,0x00,0x00};
18. unsignedcharcharnumn[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xDC,0x62,0x42,0x42,0x42,0x42,0xE7,0x00,0x00};
19. unsignedcharcharnumv[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE7,0x42,0x24,0x24,0x28,0x10,0x10,0x00,0x00};
20. unsignedcharcharnume[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x42,0x7E,0x40,0x40,0x42,0x3C,0x00,0x00};
21. unsignedcharcharnumr[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xEE,0x32,0x20,0x20,0x20,0x20,0xF8,0x00,0x00};
22. unsignedcharcharnums[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3E,0x42,0x40,0x3C,0x02,0x42,0x7C,0x00,0x00};
23. unsignedcharcharnumi[]={0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x70,0x10,0x10,0x10,0x10,0x10,0x7C,0x00,0x00};

主函數(shù)程序：

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1. adc_init();
3. LCD_Init();
4. Paint_background(0xffffff,0,0,480,272);
7. while(1)
8. {
9. adc_data=read_adc();
10. adc_data=(adc_data*32226);
12. adc_data_tmp[0]=adc_data/100000/100;
13. //adc_data_tmp[1]=((adc_data/100)0000)/10000;
14. adc_data_tmp[1]=adc_data000000/1000000;
15. adc_data_tmp[2]=adc_data00000/100000;
16. adc_data_tmp[3]=adc_data0000/10000;
17. adc_data_tmp[4]=adc_data000/1000;
18. adc_data_tmp[5]=adc_data00/100;
19. adc_data_tmp[6]=adc_data0/10;
20. adc_data_tmp[7]=adc_data;
23. Paint_text(124+8*0,20,0x0,charnum[adc_data_tmp[0]],8,16);
24. Paint_text(124+8*1,20,0x0,charnum[adc_data_tmp[1]],8,16);
25. Paint_text(124+8*2,20,0x0,charnum[adc_data_tmp[2]],8,16);
26. Paint_text(124+8*3,20,0x0,charnum[adc_data_tmp[3]],8,16);
27. Paint_text(124+8*4,20,0x0,charnum[adc_data_tmp[4]],8,16);
28. Paint_text(124+8*5,20,0x0,charnum[adc_data_tmp[5]],8,16);
29. Paint_text(124+8*6,20,0x0,charnum[adc_data_tmp[6]],8,16);
30. Paint_text(124+8*7,20,0x0,charnum[adc_data_tmp[7]],8,16);
31. delay_adc();
33. }