51单片机接在LCD1602 的c语言写的驱动程序

#include <reg51.h> #include "LCD1602.h" #include "uart.h" #include "i2c.h" #define uchar unsigned char #define uint unsigned int #define NOACK 0xaa uchar LMH=0; //高低速 uchar FILESTATE=0;//文件状态 uchar filechoice=0; uchar filenum=0; uchar filenum1=0; //文件序号 uchar filename=0; //文件名 uchar filetotal=0; //文件总数 uint num ; uint time; void Delay1ms(unsigned int count) { unsigned int i,j; for(i=0;i<count;i++) for(j=0;j<120;j++); } unsigned char key_val(unsigned char key) { switch(key) { case 0xff: return 0;break; case 0xee: return 1;break; case 0xed: return 2;break; case 0xeb: return 3;break; case 0xe7: return 4;break; case 0xde: return 5;break; case 0xdd: return 6;break; case 0xdb: return 7;break; case 0xd7: return 8;break; case 0xbe: return 9;break; case 0xbd: return 10;break; case 0xbb: return 11;break; case 0xb7: return 12;break; case 0x7e: return 13;break; case 0x7d: return 14;break; case 0x7b: return 15;break; case 0x77: return 16;break; default: return 0;break; } } unsigned char key_scan(void) { unsigned char row, col; P1 = 0xF0; row = P1&0xF0; row = row&0xF0; P1 = 0x0F; col = P1&0x0F; col = col&0x0F; return(row|col); } uchar key() { uchar keyvalue,keyvalue1; keyvalue=key_scan(); if(keyvalue) { Delay1ms(50); keyvalue1=key_scan(); //去抖动 if(keyvalue==keyvalue1){ return key_val(keyvalue); } } return 0; } void Uart_init(void) { TMOD=0x20; TH1=0xFD;//9600 11.0592MHz TL1=0xFD; TH1=0xF3; //2400 12MHz //TL1=0xF9; //9600 , 12MHz PCON=0x00; TR1=1; SCON=0x50; } /* void Uart_init(void) { TMOD=0x20; TH1=0xE6; TL1=0xE6; //1200 , 12MHz PCON=0x00; TR1=1; SCON=0x50; } */ // 查询方式从串口接收数据 uchar Uart_getchar(void) { uint i=0; while(!RI){i++;if(i>0x2fff)return 0;}// RI=0; return SBUF; } // 查询方式向串口发送数据 void Uart_putchar(uchar ch) { SBUF=ch; while(!TI); TI=0; } // 向串口发送一个字符串 void Uart_putString(char *pt) { while(*pt) Uart_putchar(*pt++); } //向串口发送一个整型数 void Uart_put_uint(uint num) { uchar a; a=(num>>8)&0xff; Uart_putchar(a); a=num&0xff; Uart_putchar(a); } //从串口接收一个整型数 uint Uart_get_uint(void) { uint num; num=Uart_getchar(); num=num<<8; num+=Uart_getchar(); return num; } //浮点数显示 void floatDisplay(uint t,uchar i) { uchar a[6]; a[0]=(t/10000)%10+'0'; //取得整数值到数组 a[1]=(t/1000)%10+'0'; //取得整数值到数组 a[2]=(t/100)%10+'0'; a[3]=(t/10)%10+'0'; a[4]=(t/1)%10+'0'; a[5]='\0'; switch(i) { case 0:LCD_Print(2,0,a);break; case 1:LCD_Print(11,0,a);break; case 2:LCD_Print(2,1,a);break; default:break; } } //显示单个数字函数************************************************************************ void LCD_Printnum(unsigned char x, unsigned char y,unsigned char num) { uchar a[2]; a[1]='\0'; a[0]=num+'0'; LCD_Print(x,y,a); } //XYZ坐标界面显示 void xyzDisplay(uchar i) { uint len,lastlen; uchar count; uchar j=0; LCD_Print(0,0,"X:00000 Y:00000"); if(LMH==0)LCD_Print(0,1,"Z:00000 LOW"); else if(LMH==1)LCD_Print(0,1,"Z:00000 HI "); count=key(); RI=0; lastlen=len=0; while(count!=10&&count!=14) { switch(count) { case 2: //开胶 if(i==0) { Uart_putchar('k'); while(count==key()); Uart_putchar('k'); //关胶 } break; case 3: //X+ RI=0; Uart_putchar('5'); while(count==key()) { RI=0; Uart_putchar('y'); len=Uart_get_uint(); floatDisplay(len,0); } for(j=0;j<5;j++)Uart_putchar('x'); break; case 12: //X- RI=0; Uart_putchar('6'); while(count==key()) { RI=0; Uart_putchar('y'); len=Uart_get_uint(); floatDisplay(len,0); } for(j=0;j<5;j++)Uart_putchar('x'); break; case 8: //Y+ RI=0; Uart_putchar('7'); while(count==key()) { RI=0; Uart_putchar('y'); len=Uart_get_uint(); floatDisplay(len,1); } for(j=0;j<5;j++)Uart_putchar('x'); break; case 4: //Y- RI=0; Uart_putchar('8'); while(count==key()) { RI=0; Uart_putchar('y'); len=Uart_get_uint(); floatDisplay(len,1); } for(j=0;j<5;j++)Uart_putchar('x'); break; case 15: //Z+ RI=0; Uart_putchar('9'); while(count==key()) { RI=0; Uart_putchar('y'); len=Uart_get_uint(); floatDisplay(len,2); } for(j=0;j<5;j++)Uart_putchar('x'); break; case 11: //Z- RI=0; Uart_putchar('a'); while(count==key()) { RI=0; Uart_putchar('y'); len=Uart_get_uint(); floatDisplay(len,2); } for(j=0;j<5;j++)Uart_putchar('x'); break; case 7: //复位 Uart_putchar('2'); while(Uart_getchar()=='0'); floatDisplay(0,0); floatDisplay(0,1); floatDisplay(0,2); break; case 16: //SHF while(count==key()); if(LMH==1) { LCD_Print(13,1,"LOW"); Uart_putchar('b'); LMH=0; } else if(LMH==0) { LCD_Print(13,1,"HI "); Uart_putchar('b'); LMH=1; } break; } count=key(); } if(i) { if(count==10)Uart_putchar('f'); //取消零点 else if(count==14)Uart_putchar('e');; //确定零点 } } //循环界面显示 void cycDisplay(uchar *p,uchar i) { switch(i) { case 0:LCD_Printnum(2,1,p[i]);break; case 1:LCD_Printnum(3,1,p[i]);break; case 2:LCD_Printnum(4,1,p[i]);break; case 3:LCD_Printnum(5,1,p[i]);break; case 4:LCD_Printnum(10,1,p[i]);break; case 5:LCD_Printnum(11,1,p[i]);break; case 6:LCD_Printnum(12,1,p[i]);break; case 7:LCD_Printnum(14,1,p[i]);break; default:break; } if(i<4) LCD_Write(LCD_COMMAND,0x80|(i+2)|0x40); //重新定位光标位置 else if(i==7) LCD_Write(LCD_COMMAND,0x80|(i+7)|0x40); else LCD_Write(LCD_COMMAND,0x80|(i+6)|0x40); } //循环设置 void cycset() { uchar numflag=0; //循环加工次数选择标志 uchar timeflag=0; //间隔时间选择标志 uchar count = 0; uchar t=0; uchar a[8]={0,0,0,0,0,0,0,0}; uchar i; num=AT24C02_read(filenum*5+1)<<8; num+=AT24C02_read(filenum*5+2); time=AT24C02_read(filenum*5+3)<<8; time+=AT24C02_read(filenum*5+4); t=a[0]=(num/1000)%10; //取得整数值到数组 t=a[1]=(num/100)%10; t=a[2]=(num/10)%10; t=a[3]=num%10; t=a[4]=(time/1000)%10; //取得整数值到数组 t=a[5]=(time/100)%10; t=a[6]=(time/10)%10; t=a[7]=(time)%10; LCD_Print(0,1,"N=**** T=***.*S"); LCD_SetDisplay(LCD_SHOW|LCD_CURSOR); //开启显示, 开光标显示 for(i=0;i<8;i++)cycDisplay(a,i); i=0; LCD_Write(LCD_COMMAND,0x80|(i-0x40)); count=key(); while(count!=10&&count!=14) { cycDisplay(a,i); if(count) { while(count==key()); switch(count) { case 12: //X+ if(i<8)i++; if(i==8) i=0; break; case 3: //X- if(i>0)i--; else if(i==0) i=7; break; case 8: //Y+ if(a[i]<10)a[i]++; if(a[i]==10) a[i]=0; break; case 4: //Y- if(a[i]>0)a[i]--; else if(a[i]==0)a[i]=9; break; default:break; } } count=key(); } if(count==14) {