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51單片機(jī)手機(jī)撥號(hào)模塊仿真電路原理圖
下面是51單片機(jī)手機(jī)撥號(hào)模塊源程序:
- #include<AT89X52.h>
- #include <intrins.h>
- #define Delaynop(){_nop_();_nop_();_nop_();_nop_();}
- sbit RS=P2^0;
- sbit RW=P2^1;
- sbit EN=P2^2;
- void Delayms(unsigned int ms);
- bit LCD_Busy();
- void LCD_Pos(unsigned char);
- void LCD_Wcmd(unsigned char);
- void LCD_Wdat(unsigned char);
- char code Title_Text[]={"--Phone Code-- "};
- unsigned char code Key_Table[]={'1','2','3','4','5','6','7','8','9','*','0','#'};
- unsigned char Dial_Code_Str[]={" "};
- unsigned char KeyNo=0xff;
- int tCount=0;
- //毫秒級(jí)延時(shí)函數(shù)
- void Delayms(unsigned int x)
- {
- unsigned char i;
- while(x--)
- {
- for(i=0;i<120;i++);
- }
- }
- //顯示字符串
- void Display_String(unsigned char *str,unsigned char LineNo)
- {
- unsigned char k;
- LCD_Pos(LineNo);
- for(k=0;k<16;k++)
- {
- LCD_Wdat(str[k]);
- }
- }
- //檢查1602是否處于忙裝填
- bit LCD_Busy_Check()
- {
- bit Result;
- RS=0;
- RW=1;
- EN=1;
- Delaynop();
- Result=(bit)(P0 & 0x80);
- EN=0;
- return Result;
- }
- //向1602寫入指令的函數(shù)
- void LCD_Write_Command(unsigned char cmd)
- {
- while(LCD_Busy_Check()); //檢查是否處于忙狀態(tài)
- RS=0;
- RW=0;
- EN=0;
- _nop_();
- _nop_();
- P0=cmd; //寫入指令
- Delaynop();
- EN=1;
- Delaynop();
- EN=0;
- }
- //向1602寫數(shù)據(jù)
- void LCD_Wdat(unsigned char dat)
- {
- while(LCD_Busy_Check()); //檢查是否處于忙狀態(tài)
- RS=1;
- RW=0;
- EN=0;
- P0=dat; //寫入數(shù)據(jù)
- Delaynop();
- EN=1;
- Delaynop();
- EN=0;
- }
- //初始化1602
- void Init_LCD()
- {
- LCD_Write_Command(0x38);Delayms(5);
- LCD_Write_Command(0x01);Delayms(5);
- LCD_Write_Command(0x06);Delayms(5);
- LCD_Write_Command(0x0c);Delayms(5);
- }
- //設(shè)置顯示位置
- void LCD_Pos(unsigned char pos)
- {
- LCD_Write_Command(pos|0x80);
- }
- /*
- //T0的中斷服務(wù)子函數(shù)
- void T0Deal()interrupt 1
- {
- TH0=-600/256;
- TL0=-600%256;
- if(++tCount==200)
- {
- tCount=0;
- TR0=0;
- }
- }
- */
- //按鍵掃描函數(shù)，返回值為對(duì)應(yīng)的按鍵編碼
- unsigned char GetKey()
- {
- unsigned char i,j,k=0;
- unsigned char KeyScanCode[]={0xef,0xdf,0xbf,0x7f}; //行列掃描的行列碼
- unsigned char KeyCodeTable[]={
- 0xee,0xed,0xeb,0xde,0xdd,0xdb,0xbe,0xbd,0xbb,0x7e,0x7d,0x7b};
- P3=0x0f;
- if(P3!=0x0f) //如果有按鍵被按下
- {
- for(i=0;i<4;i++) //依次進(jìn)行掃描
- {
- P3=KeyScanCode[i];
- for(j=0;j<3;j++)
- {
- k=i*3+j; //計(jì)算對(duì)應(yīng)的按鍵編碼
- if(P3==KeyCodeTable[k])
- {
- return k; //返回按鍵編碼
- }
- }
- }
- }
- else
- {
- return 0xff; //或者返回0xff
- }
- }
- //主函數(shù)
- void main()
- {
- unsigned char i=0,j;
- P0 = 0xFF;
- P2 = 0xFF;
- P1 = 0xFF; //初始化端口
- // IE=0x82; //設(shè)置中斷
- // TMOD=0x01; //啟動(dòng)T0定時(shí)器
- Init_LCD(); //初始化1602
- Display_String(Title_Text,0x00); //顯示 --Phone Code--
- while(1)
- {
- KeyNo = GetKey(); //獲得按鍵狀態(tài)
- if(KeyNo==0xff)
- {
- continue; //如果沒有按鍵，則進(jìn)入下一個(gè)循環(huán)
- }
- if(++i==12) //如果已經(jīng)超過11個(gè)數(shù)字，清除顯示屏幕
- {
- for(j=0;j<16;j++)
- Dial_Code_Str[j]=' ';
- i=0;
- }
- Dial_Code_Str[i]=Key_Table[KeyNo]; //顯示撥號(hào)數(shù)據(jù)
- Display_String(Dial_Code_Str,0x40);
- // TR0=1;
- while(GetKey()!=0xff);
- }
- }
51單片機(jī)手機(jī)撥號(hào)模塊所有資料下載：http://www.zg4o1577.cn/bbs/dpj-54940-1.html
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