zhinengxiaoche.rar_超声波小车_超声波模块

/*--------------------------------------------------------------------- LCD1602.C函数文件 作者：Cong-Tou 版本：初学 ----------------------------------------------------------------------*/ #include "hardware.h" #include "1602lcd.h" void LCD_check_busy(void) //测忙 { while(1) { LCD_EN=0; LCD_RS=0; LCD_RW=1; //RW=1 读 LCD_DATA=0xff; LCD_EN=1; if(!LCD_BUSY)break; //D7=跳出循环 } LCD_EN=0; } void LCD_clear(void) //清屏 { LCD_check_busy(); LCD_RS=0; LCD_RW=0; LCD_DATA=1; //全1清屏 LCD_EN=1; LCD_EN=0; } void LCD_instruction(unsigned char LCD_instruction) //写指令 { LCD_check_busy(); LCD_RS=0; LCD_RW=0; LCD_DATA=LCD_instruction; LCD_EN=1; LCD_EN=0; } void LCD_data(unsigned char LCD_data) //写数据 { LCD_check_busy(); LCD_RS=1; LCD_RW=0; LCD_DATA=LCD_data; LCD_EN=1; LCD_EN=0; } void LCD_set(unsigned char x) //光标定位 { LCD_instruction(0x80+x); //0X80+0 第一列 0x80+0x40第二列 } void LCD_char(unsigned char LCD_char) //单字符 { LCD_data(LCD_char); } void LCD_chars(unsigned char *lcd_string) //字符串 { unsigned char i=0; while(lcd_string[i]!=0x00) { LCD_data(lcd_string[i]); i++; } } void LCD_initial(void) //初始化 { LCD_instruction(LCD_AC_AUTO_INCREMENT|LCD_MOVE_DISENABLE); LCD_instruction(LCD_DISPLAY_ON|LCD_CURSOR_OFF|LCD_CURSOR_BLINK_OFF); LCD_instruction(LCD_DISPLAY_DOUBLE_LINE); LCD_clear(); } void display() { LCD_set(0x00); LCD_chars("speed model:stop"); LCD_set(0x40); //第二行 LCD_chars("Distance:"); }