单片机多种功能实现程序.docVIP

单片机多种功能实现程序 /*----------------------------------------------- 名称：LCD1602 论坛： 编写：shifang 日期：2009.5 修改：无 内容： 引脚定义如下：1-VSS 2-VDD 3-V0 4-RS 5-R/W 6-E 7-14 DB0-DB7 15-BLA 16-BLK ------------------------------------------------*/ #include 1602.h #include delay.h #define CHECK_BUSY sbit RS = P2^4; //定义端口 sbit RW = P2^5; sbit EN = P2^6; #define RS_CLR RS=0 #define RS_SET RS=1 #define RW_CLR RW=0 #define RW_SET RW=1 #define EN_CLR EN=0 #define EN_SET EN=1 #define DataPort P0 /*------------------------------------------------ 判忙函数 ------------------------------------------------*/ bit LCD_Check_Busy(void) { #ifdef CHECK_BUSY DataPort= 0xFF; RS_CLR; RW_SET; EN_CLR; _nop_(); EN_SET; return (bit)(DataPort 0x80); #else return 0; #endif } /*------------------------------------------------ 写入命令函数 ------------------------------------------------*/ void LCD_Write_Com(unsigned char com) { while(LCD_Check_Busy()); //忙则等待 RS_CLR; RW_CLR; EN_SET; DataPort= com; _nop_(); EN_CLR; } /*------------------------------------------------ 写入数据函数 ------------------------------------------------*/ void LCD_Write_Data(unsigned char Data) { while(LCD_Check_Busy()); //忙则等待 RS_SET; RW_CLR; EN_SET; DataPort= Data; _nop_(); EN_CLR; } /*------------------------------------------------ 清屏函数 ------------------------------------------------*/ void LCD_Clear(void) { LCD_Write_Com(0x01); DelayMs(5); } /*------------------------------------------------ 写入字符串函数 ------------------------------------------------*/ void LCD_Write_String(unsigned char x,unsigned char y,unsigned char *s) { while (*s) { LCD_Write_Char(x,y,*s); s ++; x++; } } /*------------------------------------------------ 写入字符函数 ------------------------------------------------*/ void LCD_Write_Char(unsigned char x,unsigned char y,u