lcd1602程序.doc

lcd1602程序 作者：佚名 文章来源：internet 点击数：233 更新时间：2006-7-7 #include#define uchar unsigned char#define uint unsigned intsbit LCM_RW=P26; /定义引脚sbit LCM_RS=P27;sbit LCM_E=P25;#define LCM_Data P0#define Busy 0x80 /用于检测LCM状态字中的Busy标识 void WriteDataLCM(unsigned char WDLCM);void WriteCommandLCM(unsigned char WCLCM,BuysC);unsigned char ReadDataLCM(void);unsigned char ReadStatusLCM(void);void LCMInit(void);void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);void Delay5Ms(void);void Delay400Ms(void);unsigned char code cdle_net = ;unsigned char code email = ;void main(void)Delay400Ms(); /启动等待，等LCM讲入工作状态LCMInit(); /LCM初始化Delay5Ms(); /延时片刻(可不要)DisplayListChar(0, 0, cdle_net);DisplayListChar(0, 1, email);while(1);/写数据void WriteDataLCM(unsigned char WDLCM)ReadStatusLCM(); /检测忙LCM_Data = WDLCM;LCM_RS = 1;LCM_RW = 0;LCM_E = 0; /若晶振速度太高可以在这后加小的延时LCM_E = 0; /延时LCM_E = 1;/写指令void WriteCommandLCM(unsigned char WCLCM,BuysC) /BuysC为0时忽略忙检测if (BuysC) ReadStatusLCM(); /根据需要检测忙LCM_Data = WCLCM;LCM_RS = 0;LCM_RW = 0; LCM_E = 0;LCM_E = 0;LCM_E = 1; /读数据unsigned char ReadDataLCM(void)LCM_RS = 1; LCM_RW = 1;LCM_E = 0;LCM_E = 0;LCM_E = 1;return(LCM_Data);/读状态unsigned char ReadStatusLCM(void)LCM_Data = 0xFF; LCM_RS=0;LCM_RW = 1;LCM_E = 0;LCM_E = 0;LCM_E = 1;while (LCM_Data & Busy); /检测忙信号return(LCM_Data);void LCMInit(void) /LCM初始化LCM_Data = 0;WriteCommandLCM(0x38,0); /三次显示模式设置，不检测忙信号Delay5Ms(); WriteCommandLCM(0x38,0);Delay5Ms(); WriteCommandLCM(0x38,0);Delay5Ms(); WriteCommandLCM(0x38,1); /显示模式设置,开始要求每次检测忙信号WriteCommandLCM(0x08,1); /关闭显示WriteCommandLCM(0x01,1); /显示清屏WriteCommandLCM(0x06,1); / 显示光标移动设置WriteCommandLCM(0x0C,1); / 显示开及光标设置/按指定位置显示一个字符void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)Y &= 0x1;X &= 0xF; /限制X不能大于15，Y不能大于1if (Y) X |= 0x40; /当要显示第二行时地址码+0x40;X |= 0x80; /算出指令码WriteCommandLCM(X, 0); /这里不检测忙信号，发送地址码WriteDataLCM(DData);/按指定位置显示一串字符void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData)unsigned char ListLength;ListLength = 0;Y &= 0x1;X &= 0xF; /限制X不能大于15，Y不能大于1while (DDataListLength0x20) /若到达字串尾则退出if (X = 0xF) /X坐标应小于0xFDisplayOneChar(X, Y, DDataListLength); /显示单个字符ListLength+;X+;/5ms延时void Delay5Ms(void)unsigned int TempCyc = 5552;while(TempCyc-);/4