超强的51+LCD1602控制四位八位控制1602函数全集+写入字库Word格式.docx

1、 （unsigned char cmd）;/写入指令void LCD_dat （unsigned char dat）;/写入数据void LCD_pos （unsigned char x, unsigned char y）;/显示定位void LCD_printc（unsigned char x, unsigned char y, unsigned char c）;/定位输出字符void LCD_prints（unsigned char x, unsigned char y, unsigned char *s）;/定位输出字符串void LCD_printn（unsigned char x,

2、unsigned char y, unsigned int num）;/定位输出16位二进制数字unsigned char LCD_current_addr（void）;/读出AC当前地址（DB6DB0）或忙标志位DB7unsigned char LCD_current_addr_dat（void）;/读出AC当前地址的数据unsigned char LCD_addr_dat（unsigned char x, unsigned char y）;/读出AC指定地址的数据void LCD_pos_CG（unsigned char x, unsigned char *CGRAM_dat）;/指定地址

3、（x: 0-7）写入8bytes数据CGRAM/*-*/光标、画面移动,不影响DDRAM#define LCD_LEFT_MOVELCD_cmd（0x18）;/LCD显示左移一位#define LCD_RIGHT_MOVELCD_cmd（0x1c）;/LCD显示右移一位#define LCD_CURSOR_LEFT_MOVELCD_cmd（0x10）;/光标左移一位#define LCD_CURSOR_RIGHT_MOVELCD_cmd（0x14）;/光标右移一位/*-*/设置显示、光标及闪烁开、关#define LCD_DISPLAY_ON LCD_cmd（0x0c）;/LCD开显示#def

4、ine LCD_DISPLAY_OFF LCD_cmd（0x08）;/LCD关显示#define LCD_CURSOR_ONLCD_cmd（0x0e）;/光标显示#define LCD_CURSOR_OFF/光标不显示#define LCD_CURSOR_BLINK_ONLCD_cmd（0x0f）;/光标闪烁#define LCD_CURSOR_BLINK_OFF/光标不闪烁#define LCD_GO_HOMELCD_cmd（0x02）;/AC=0,光标、画面回HOME位, DDRAM内容不变#define LCD_CLRLCD_cmd（0x01）;/LCD清屏, 清除DDRAM, 清除屏幕

5、, 置AC为0, 光标回位?/工作方式设置#define LCD_DISPLAY8_DOUBLE_LINELCD_cmd（0x38）;/两行显示8-bits#define LCD_DISPLAY8_SINGLE_LINELCD_cmd（0x30）;/单行显示8-bits#define LCD_DISPLAY4_DOUBLE_LINELCD_cmd（0x28）;/两行显示4-bits#define LCD_DISPLAY4_SINGLE_LINELCD_cmd（0x20）;/单行显示4-bits/输入方式设置#define LCD_AC_AUTO_INCREMENTLCD_cmd（0x06）;/

6、数据读、写操作后,AC自动加 1#define LCD_AC_AUTO_DECREASELCD_cmd（0x04）;/数据读、写操作后,AC自动减 1#define LCD_MOVE_ENABLELCD_cmd（0x07）;/数据读、写操作,画面平移#define LCD_MOVE_DISENABLE/数据读、写操作,画面不动以下是液晶驱动头文件：/File:LCD1602_8A.H/Time:20:10/Modi:09-5-17/防止被重复定义#ifndef _LCD1602_8A_H_#define _LCD1602_8A_H_#define Int_Transfer/=1, 允许中断服务

7、函数调用/=0, 不允许中断服务函数调用/LCD1602与单片机接口定义sfrLCD_IO = 0x80;/P0-0x80,P1-0x90,P2-0xA0,P3-0xB0;sbitLCD_RS = P20;/LCD数据/命令选择端（H/L）LCD_RW = P21;/LCD 读/写 选择端（H/L）LCD_EN = P22;/LCD使能控制端/LCD1602地址相关/*#define LINE1_HEAD0x80/第一行DDRAM起始地址#define LINE2_HEAD0xc0/第二行DDRAM起始地址#define LINE10/第一行#define LINE2/第二行#define L

8、INE_LENGTH16/每行的最大字符长度（40-DDRAM）#if Port_Type_Select/选择八位数据模式unsigned char LCD_current_addr（void）unsigned char ac_addr;LCD_EN = 0;LCD_RS = 0;/指令LCD_RW = 1;/读出LCD_IO = 0xff;/端口置为输入方式（P0）LCD_EN = 1;ac_addr = LCD_IO;return （ac_addr）;#else/选择四位数据模式LCD_IO |= 0xf0;ac_addr = LCD_IO & 0xf0;/高四位ac_addr |= LC

9、D_IO 4;/低四位#endif/检测LCD忙状态#if Int_Transfer/允许中断服务函数调用void LCD_busy（void）unsigned char ac_dat;unsigned char busy_flag;doac_dat = LCD_current_addr（）;busy_flag = ac_dat & 0x80;while（busy_flag）;/=1表示忙, =0表示空闲/不允许中断服务函数调用bit busy_flag;busy_flag = （bit）（ac_dat & 0x80）;unsigned char LCD_current_addr_dat（vo

10、id）unsigned char addr_dat;/unsigned char i;LCD_busy（）;/或者检查忙最可靠for（i = 0; i void LCD_cmd（unsigned char cmd）/检测忙LCD_RW = 0;/写入LCD_IO = cmd;/传指令/下降沿有效LCD_IO &= 0x0f;/清高四位LCD_IO |= cmd &/写高四位cmd = 4;/低四位移到高四位void LCD_dat（unsigned char dat）LCD_IO = dat;/传数据LCD_IO |= dat &dat /显示定位DDRAMvoid LCD_pos（unsigned char x, unsigned char y）if（y）LCD_cmd（x|0xc0）;/y=1第二行显示,y=0第一行显示0=x16（40-DD