LCD.rar_msp430f149 12864

#include "LCD.h" // 加载字体库 #include "XKData.h" //行楷 #define Zx 16 //字宽 #define Zy 16 //字高 /* 宏定义 */ // ST7920 控制端口定义 // 端口设置 #define LCD_CTL_OUT P3OUT #define LCD_CTL_IN P3IN #define LCD_CTL_DIR P3DIR // 引脚定义 #define LCD_RS BIT7 #define LCD_RW BIT6 #define LCD_E BIT5 #define LCD_PSB BIT4 #define LCD_RST BIT3 // 引脚动作定义 #define LCD_RS_HIGH (LCD_CTL_OUT |= LCD_RS) #define LCD_RS_LOW (LCD_CTL_OUT &= ~LCD_RS) #define LCD_RW_HIGH (LCD_CTL_OUT |= LCD_RW) #define LCD_RW_LOW (LCD_CTL_OUT &= ~LCD_RW) #define LCD_E_HIGH (LCD_CTL_OUT |= LCD_E) #define LCD_E_LOW (LCD_CTL_OUT &= ~LCD_E) #define LCD_PSB_HIGH (LCD_CTL_OUT |= LCD_PSB) #define LCD_PSB_LOW (LCD_CTL_OUT &= ~LCD_PSB) #define LCD_RST_HIGH (LCD_CTL_OUT |= LCD_RST) #define LCD_RST_LOW (LCD_CTL_OUT &= ~LCD_RST) // ST7920 数据端口定义 // 端口设置 #define LCD_DATA_OUT P5OUT #define LCD_DATA_IN P5IN #define LCD_DATA_DIR P5DIR // 引脚动作定义 #define LCD_DATA_DOUT (LCD_DATA_DIR = 0xff) #define LCD_DATA_DIN (LCD_DATA_DIR = 0x00) // 时序延迟 #define LCD_DELAY (1) /* 全局变量声明 ---------------------------------------------------- */ unsigned char LCD_Busy; // 总线忙标志 /* 底层时序函数 ---------------------------------------------------- */ // 延迟程序(产生略微的延迟) void LCD_Delay(unsigned int time) { for(int i=0; i<time; i++) _NOP(); } // 读寄存器状态(主要用于判忙) // RS L // RW H unsigned char LCD_StatusRead(void) { unsigned char Status; // 控制线 LCD_RS_LOW; LCD_RW_HIGH; // 判忙 LCD_E_HIGH; LCD_Delay(LCD_DELAY); Status = LCD_DATA_IN; LCD_E_LOW; return Status; } // 液晶读/写操作判忙 void LCD_BusyRead(void) { LCD_DATA_DIN; unsigned char Status; do { // 读取状态 Status = LCD_StatusRead(); // 判断标志 if (!(Status & 0x80) ) LCD_Busy = 0; /* !! 判忙语句 !! */ else LCD_Busy = 1; } while(LCD_Busy == 1); } // 伪造液晶读/写操作判忙(用延时替代) void LCD_BusyRead_(void) { LCD_Delay(2*LCD_DELAY); } // 写数据到液晶 // RS H // RW L void LCD_WriteData(unsigned char Data) { LCD_BusyRead(); // 判忙 // 控制线 LCD_RW_LOW; LCD_RS_HIGH; // 数据方向 LCD_DATA_DOUT; // 准备数据 LCD_DATA_OUT = Data; LCD_Delay(LCD_DELAY); // 写操作 LCD_E_HIGH; LCD_Delay(LCD_DELAY); LCD_E_LOW; // 数据方向 LCD_DATA_DIN; } // 写命令到液晶 // RS L // RW L void LCD_WriteCommand(unsigned char Command) { LCD_BusyRead(); // 判忙 // 控制线 LCD_RW_LOW; LCD_RS_LOW; // 数据方向 LCD_DATA_DOUT; // 准备数据 LCD_DATA_OUT = Command; LCD_Delay(LCD_DELAY); // 写操作 LCD_E_HIGH; LCD_Delay(LCD_DELAY); LCD_E_LOW; // 数据方向 LCD_DATA_DIN; } // 读数据从液晶 // RS H // RW H unsigned char LCD_ReadData(void) { unsigned char Temp; LCD_BusyRead(); // 判忙 // 控制线 LCD_RS_HIGH; LCD_RW_HIGH; // 读数据 LCD_E_HIGH; LCD_Delay(LCD_DELAY); Temp = LCD_DATA_IN; LCD_E_LOW; return (Temp); } /* 功能函数 --------------Ascii------------------------------------- */ // 将位置地址设置到(x, y)位置 extern void LCD_SetXYAsc(unsigned char x, unsigned char y) { unsigned char XY=0x80; // 计算坐标 if (y%2) XY += 0x10; if (y<=1) XY += x; else XY += (x+0x08); LCD_WriteCommand(XY); // 设置地址 } /* 上层函数 ---------------Ascii------------------------------------ */ /*说明: 下面函数是供外部文件调用的, 可以完成对液晶的常用操作*/ // 在指定的(x,y)位置写入一个数据 extern void LCD_LocateAsc(/*unsigned char x, unsigned char y, */unsigned char Data) { //LCD_SetXYAsc(x,y); LCD_WriteData(Data); } // 初始化函数 extern void LCD_InitAsc(void) { // 引脚设置 LCD_CTL_OUT |= LCD_RS + LCD_RW + LCD_E + LCD_PSB + LCD_RST; LCD_CTL_DIR |= LCD_RS + LCD_RW + LCD_E + LCD_PSB + LCD_RST; LCD_PSB_HIGH; // 并口 LCD_DATA_DIN; // 硬件复位液晶 LCD_RST_LOW; LCD_Delay(200); LCD_RST_HIGH; LCD_Delay(10); // 功能初始化 LCD_WriteCommand(0x30); // 8位传输，基本指令集命令 LCD_WriteCommand(0x01); // clear screen LCD_WriteCommand(0x06); // 光标右移，AC自加，显示整体不移动 LCD_WriteCommand(0x0c); // 开整体显示，光标不显示、不闪烁 } // 写一行字符 extern void LCD_LocateLineAsc(uchar y,uchar *Data) { LCD_SetXYAsc(0,y); for(uchar i=0 ; i<16 && *(Data+i)!='\0' ; i++) LCD_WriteData(*(Data+i)); } extern void LCD_LocateClearAsc() { for(int i=0;i<4;i++) LCD_LocateLineAsc(i," "); } extern uchar LCD_Read(uchar x,uchar y) { LCD_SetXYAsc(x,y); return LCD_ReadData(); } /* 功能函数 ---------------Pic-------------------------------------- */ // 将位置地址设置到(x, y)位置 extern void LCD_SetXYPic(unsigned char x, unsigned char y) { unsigned char XY=0x80; // 计算坐标 XY += y%32; LCD_WriteCommand(XY); // Y设置地址 XY=0x80; if (y<32) XY += x; else XY += (x+0x08); LCD_WriteCommand(XY); // X设置地址 } /* 上层函数 ----------------Pic------------------------------------- */ /*说明: 下面函数是供外部文件调用的, 可以完成对液晶的常用操作*/ // 在指定的(x,y)位置写入一个数据 extern void LCD_LocatePic(/*unsigned char x, unsigned char y, */unsigned char Data) { //LCD_SetXYPic(x,y); LCD_WriteData(Data); } extern void LCD_LocateBasic(uchar x,uchar y,uchar m,uchar n,uchar *Data) { uchar i,j; for(i=0;i<n;i++) { j=0; LCD_SetXYPic(x+j,y+i); for(;j<(m/16);j++) { LCD_LocatePic(Data[i*(m/8)+2*j]); LCD_LocatePic(Data[i*(m/8)+2*j+1]); } } } extern void LCD_LocateFull(uchar *Data) { LCD_LocateBasic(0,0,128,64,Data); } extern void LCD_LocateClearPic(uchar x,uchar y,uchar m,uchar n) { uchar i,j; for(i=0;i<n;i++) { j=0; LCD_SetXYPic(x+j,y+i); for(;j<(m/16);j++) { LCD_LocatePic(0); LCD_LocatePic(0); } } } /* -------------------------HZ---------------------------------- */ extern void LCD_LocateHZ(uchar x,uchar y,unsigned int Data) { uint i; for(i=0;i<hzNum;i++) if (Data/256==hzIndex[2*i]&&Data%256==hzIndex[2*i+1]) break; i *= 32; //定位汉字点阵信息 y *= 16; //汉字位置转换为点阵位置 LCD_LocateBasic( x, y, Zx, Zy, hzdot+i); } // --------------------初始化函数--------------------- extern void LCD_InitPic(void) { // 引脚设置 LCD_CTL_OUT |= LCD_RS + LCD_RW + LCD_E + LCD_PSB + LCD_RST; LCD_CTL_DIR |= LCD_RS + LCD_RW + LCD_E + LCD_PSB + LCD_RST; LCD_PSB_HIGH; // 并口 LCD_DATA_DIN; // 硬件复位液晶 LCD_RST_LOW; LCD_Delay(200); LCD_RST_HIGH; LCD_Delay(10); // 功能初始化 LCD_WriteCommand(0x36); // 8位传输，扩充指令集命令 }