lcd1602 C语言驱动.doc

学习资料收集于网络，仅供参考/*LCD1602驱动程序*/*程序用法：1、按行显示：display(行号，数据指针） 2、定位显示：displayUser(行号，列号，字符/字符串）3、动态显示：Ddisplay(行号、列号、字符/字符串）4、闪烁显示：Fldisplay(行号、列号、字符/字符串）*/*声明代码（放工程中需要包含的自定义头文件中）：void delay(unsigned char n);void init();void display(unsigned char a,unsigned char table);void write_date(uchar);void write_command(uchar);void displayUser(unsigned char hang,unsigned lie,unsigned char table);void Ddisplay(unsigned char hang,unsigned lie,unsigned char table);void Fldisplay(unsigned char hang,unsigned lie,unsigned char table);*/#include #define uchar unsigned charsbit rs=P24;sbit rw=P25;sbit e=P26;uchar busyc,line;void delay(uchar n)uchar x,y;for(x=n;x0;x-)for(y=110;y0;y-);void busy(uchar busyc)rs=0;rw=1;e=1;delay(1);busyc=P0;e=0;void write_command(uchar command)busy(busyc);while(busyc); /判断 LCD 是否忙碌rs=0;rw=0;e=1;P0=command;delay(10);e=0;void write_date(uchar date)busy(busyc);while(busyc); /判断 LCD 是否忙碌rs=1;rw=0;e=1;P0=date;delay(10);e=0;void init()e=0;write_command(0x38);delay(15);write_command(0x0c);write_command(0x06);write_command(0x01);void display(unsigned int a,unsigned char *table)uchar i;if(a=1) write_command(0x80); /设置显示位置(第一行开头) for(i=0;i16;i+) write_date(*(table+i); /显示字符if(a=2) write_command(0xc0); / 设置显示位置（第二行开头） for(i=0;i16;i+) write_date(*(table+i); / 显示字符void displayUser(unsigned char hang,unsigned lie,unsigned char table)/定位显示，定位行号和列号 unsigned char add,i; if(hang=1) add=0x80+lie-1; if(hang=2) add=0xc0+lie-1; write_command(add); for(i=0;i(add%15);i+) write_date(tablei); / 显示字符void Ddisplay(unsigned char hang,unsigned lie,unsigned char table)/动态、定位显示，定位行号和列号 unsigned char add,i,m; if(hang=1) add=0x80+lie-1; if(hang=2) add=0xc0+lie-1; write_command(add); for(i=0;i(add%15);i+) write_date(tablei); / 显示字符 for(m=0;m4;m+) delay(250); void Fldisplay(unsigned char hang,unsigned lie,unsigned char table)/闪烁、定位显示，定位行号和列号 unsigned char add,i; if(hang=1) add=0x80+lie-1; if(hang=2) add=0xc0+lie-1; write_command(add); while(1) for(i=0;i(add%15);i+) write_date(tablei);