MSC1602C液晶程序设计（例程）
#include
#define LCM_RW P3_1 //读1写0//定义引脚 #define LCM_RS P3_0 //寄存器1指令0 #define LCM_E P3_2 //片选
#define LCM_Data P2 //数据 #define Busy 0x80 //用于检测LCM状态字中的Busy标识
void WriteDataLCM(unsigned char WDLCM); //写数据 void WriteCommandLCM(unsigned char WCLCM,BuysC); //写命令字 unsigned char ReadDataLCM(void); //读数据 unsigned char ReadStatusLCM(void); //读状态字 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); void Delay4s(void);
unsigned char code yftech[] = {%unsigned char code www[] = {\
unsigned char code net[] = {%unsigned char code lianxi[] = {%unsigned char code mobile[] = {%unsigned char code QQ[] = {%unsigned char code Email[] = {\
unsigned char code Email_2[] = {\
void main(void) { Delay400Ms(); //启动等待，等LCM讲入工作状态 while(1) { LCMInit(); //LCM初始化 Delay5Ms(); //延时片刻(可不要) DisplayListChar(3, 0, yftech); DisplayListChar(9, 0, www); DisplayListChar(0, 1, net);
// ReadDataLCM(); //测试用句无意义 Delay4s(); //延时4秒 LCMInit(); //LCM初始化 DisplayListChar(0, 0, lianxi); DisplayListChar(4, 1, mobile); //空四格开始显示移动电话号码
Delay4s(); LCMInit(); //LCM初始化 DisplayListChar(0, 0, QQ); DisplayListChar(12,0,Email); DisplayListChar(2,1,Email_2); Delay4s(); } }
//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; //给数据端口送0 WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号 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1 if (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1 while (DData[ListLength]>0x20) //若到达字串尾则退出 { if (X <= 0xF) //X坐标应小于0xF { DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符 ListLength = ListLength+1 ; X = X+1 ; } } }
//5ms延时
void Delay5Ms(void) { unsigned int TempCyc = 5552; while(TempCyc--); }
//400ms延时
void Delay400Ms(void) { unsigned char TempCycA = 5; unsigned int TempCycB; while(TempCycA--) { TempCycB=7269; while(TempCycB--); }; }
//4s延时
void Delay4s(void) { unsigned char TempCycD = 50; unsigned int TempCycE; while(TempCycD--) { TempCycE=7269; while(TempCycE--); }; }