LCD1602功能函数代码
main.c
#include <REGX52.H>
#include "LCD1602.h"
#include "Delay.h"void main()
{LCD_Init(); //LCD初始化LCD_ShowChar(1,1,'A'); //在1行1列显示字符ALCD_ShowString(1,3,"Hello"); //在1行3列显示字符串HelloLCD_ShowNum(1,9,66,2); //在1行9列显示数字66,长度为2LCD_ShowSignedNum(1,12,-88,2); //在1行12列显示有符号数字-88,长度为2LCD_ShowHexNum(2,1,0xA5,2); //在2行1列显示十六进制数字0xA5,长度为2LCD_ShowBinNum(2,4,0xA5,8); //在2行4列显示二进制数字0xA5,长度为8LCD_ShowChar(2,13,0xDF); //在2行13列显示编码为0xDF的字符LCD_ShowChar(2,14,'C'); //在2行14列显示字符Cwhile(1){}
}
LCD1602.c
#include <REGX52.H>//引脚定义
sbit LCD_RS=P2^6;
sbit LCD_RW=P2^5;
sbit LCD_E=P2^7;
#define LCD_DataPort P0/*** @brief LCD1602延时函数,12MHz调用可延时1ms* @param 无* @retval 无*/
void LCD_Delay() //@12.000MHz 1ms
{unsigned char i, j;i = 2;j = 239;do{while (--j);} while (--i);
}/*** @brief LCD1602写命令* @param Command 要写入的命令* @retval 无*/
void LCD_WriteCommand(unsigned char Command)
{LCD_RS=0;LCD_RW=0;LCD_DataPort=Command;LCD_E=1;LCD_Delay();LCD_E=0;LCD_Delay();
}/*** @brief LCD1602写数据* @param Data 要写入的数据* @retval 无*/
void LCD_WriteData(unsigned char Data)
{LCD_RS=1;LCD_RW=0;LCD_DataPort=Data;LCD_E=1;LCD_Delay();LCD_E=0;LCD_Delay();
}/*** @brief LCD1602初始化函数* @param 无* @retval 无*/
void LCD_Init(void)
{LCD_WriteCommand(0x38);LCD_WriteCommand(0x0C);LCD_WriteCommand(0x06);LCD_WriteCommand(0x01);
}/*** @brief LCD1602设置光标位置* @param Line 行位置,范围:1~2* @param Column 列位置,范围:1~16* @retval 无*/
void LCD_SetCursor(unsigned char Line,unsigned char Column)
{if(Line==1){LCD_WriteCommand(0x80|(Column-1));}else{LCD_WriteCommand(0x80|(Column-1)+0x40);}
}/*** @brief 在LCD1602指定位置上显示一个字符* @param Line 行位置,范围:1~2* @param Column 列位置,范围:1~16* @param Char 要显示的字符* @retval 无*/
void LCD_ShowChar(unsigned char Line,unsigned char Column,unsigned char Char)
{LCD_SetCursor(Line,Column);LCD_WriteData(Char);
}/*** @brief 在LCD1602指定位置开始显示所给字符串* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param String 要显示的字符串* @retval 无*/
void LCD_ShowString(unsigned char Line,unsigned char Column,unsigned char *String)
{unsigned char i;LCD_SetCursor(Line,Column);for(i=0;String[i]!='\0';i++){LCD_WriteData(String[i]);}
}/*** @brief 返回值=X的Y次方*/
int LCD_Pow(int X,int Y)
{unsigned char i;int Result=1;for(i=0;i<Y;i++){Result*=X;}return Result;
}/*** @brief 在LCD1602指定位置开始显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:0~65535* @param Length 要显示数字的长度,范围:1~5* @retval 无*/
void LCD_ShowNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{unsigned char i;LCD_SetCursor(Line,Column);for(i=Length;i>0;i--){LCD_WriteData('0'+Number/LCD_Pow(10,i-1)%10);}
}/*** @brief 在LCD1602指定位置开始以有符号十进制显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:-32768~32767* @param Length 要显示数字的长度,范围:1~5* @retval 无*/
void LCD_ShowSignedNum(unsigned char Line,unsigned char Column,int Number,unsigned char Length)
{unsigned char i;unsigned int Number1;LCD_SetCursor(Line,Column);if(Number>=0){LCD_WriteData('+');Number1=Number;}else{LCD_WriteData('-');Number1=-Number;}for(i=Length;i>0;i--){LCD_WriteData('0'+Number1/LCD_Pow(10,i-1)%10);}
}/*** @brief 在LCD1602指定位置开始以十六进制显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:0~0xFFFF* @param Length 要显示数字的长度,范围:1~4* @retval 无*/
void LCD_ShowHexNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{unsigned char i;unsigned char SingleNumber;LCD_SetCursor(Line,Column);for(i=Length;i>0;i--){SingleNumber=Number/LCD_Pow(16,i-1)%16;if(SingleNumber<10){LCD_WriteData('0'+SingleNumber);}else{LCD_WriteData('A'+SingleNumber-10);}}
}/*** @brief 在LCD1602指定位置开始以二进制显示所给数字* @param Line 起始行位置,范围:1~2* @param Column 起始列位置,范围:1~16* @param Number 要显示的数字,范围:0~1111 1111 1111 1111* @param Length 要显示数字的长度,范围:1~16* @retval 无*/
void LCD_ShowBinNum(unsigned char Line,unsigned char Column,unsigned int Number,unsigned char Length)
{unsigned char i;LCD_SetCursor(Line,Column);for(i=Length;i>0;i--){LCD_WriteData('0'+Number/LCD_Pow(2,i-1)%2);}
}
LCD1602.h
#ifndef __DELAY_H__
#define __DELAY_H__void Delay(unsigned int xms);#endif