📄 1602driver.c
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/****************************************/////////////////////////////
/*文件名称：1602driver
*文件标识：
*摘 要：LCD 1602 驱动程序，显示内容：数字，英文字符，ascii码符号，
* 内设有几个子函数 1.显示位置的控制，根据 line ,row 的值设定，随意开始显示的位置
2.显示字符子函数，调用函数，（“要显示的字符”）
3.显示数值子函数，调用该函数（整数部分的数值，小数部分的数值）
4.显示数值+字符的子函数 调用函数 （（“要显示的字符”，整数，小数，“单位”）
*作 者：陈军
*完成日期：20080923
*
*
*///////////////////////////////////////***************************************/
#include <reg52.h>
//各功能设定时候的指令码如下：
const unsigned char CLEAR_SCREEN = 0X01;
const unsigned char CURSOR_RETURN = 0X02;
const unsigned char MODE_SET = 0X06; // 完成一个字码传送后，AC自动加1，显示不发生位移
const unsigned char DISPLAY_ON = 0X0C; // 开显示，光标不显示，光标所在位置的字符不闪烁
const unsigned char CURSOR_DISPLAY_SHIFT = 0X14;//光标向右移，显示不动，AC自动加1
const unsigned char FUNCTION_SET = 0X38; //数据接口宽度为8位，两行显示，5*8点阵字符
const unsigned char CGRAM_ADD_INI = 0X40; //CGRAM 初始地址设为000000，
const unsigned char DDRAM_ADD_INI_1 = 0X80; //DDRAM 初始地址设为1000000
const unsigned char DDRAM_ADD_INI_2 = 0XC0;
const bit E_READ = 1; // E=1,读
const bit RS_INST = 0; //RS=0,DB7~0,数据操作指向指令寄存器
const bit RS_DATA = 1; //RS=1,DB7~0,数据操作指向数据寄存器
const bit RW_READ = 1; //此时进行访问的为，读操作
const bit RW_WRITE = 0; //此时进行访问的为，写操作
//端口定义
// P07~P00 对应的为LCD数据窗口的DB7~DB0
sbit RS = P2^0; //指向指令、数据寄存器的mcu控制端口
sbit RW = P2^1; //读写操作控制由 mcu P2^1端口提供
sbit E = P2^2; //读写控制使能信号，由P2^3控制
sbit BF = P0^7;
unsigned char code num_dis_code[10]="0123456789";
unsigned char *p_number = &num_dis_code[0];
unsigned char code self_definition_char[] = {
0x06,0x02,0x0a,0x11,0x08,0x12,0x0d,0x00, //"公"代码
0x0e,0x00,0x1f,0x0a,0x0a,0x0a,0x13,0x00, //"元"代码
0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x00, //"年"代码
0x0f,0x09,0x0f,0x09,0x0f,0x09,0x11,0x00, //"月"代码
0x1f,0x11,0x11,0x1f,0x11,0x11,0x1f,0x00, //"日"代码
0x00,0x1F,0x15,0x15,0x1B,0x11,0x1F,0x00, //"四"代码
0x1F,0x04,0x04,0x1E,0x0A,0x12,0x1F,0x00, //"五"代码
0x08,0x04,0x1F,0x00,0x0A,0x11,0x00,0x00, //"六"代码
0x00,0x10,0x08,0x04,0x02,0x01,0x00,0x00, //"\"代码
0x01,0x02,0x05,0x02,0x06,0x02,0x02,0x02, //自定义字符
0x04,0x0A,0x1F,0x04,0x1F,0x0E,0x15,0x0C, //自定义字符
0x01,0x0F,0x04,0x02,0x01,0x02,0x04,0x08, //自定义字符
0x00,0x1E,0x08,0x10,0x00,0x10,0x08,0x06, //自定义字符
0x0F,0x12,0x0F,0x04,0x0F,0x00,0x0F,0x00, //自定义字符
0x1F,0x12,0x1C,0x10,0x1E,0x10,0x1F,0x10, //自定义字符
};
//unsigned char *p_number = "0123456789";
unsigned char k;
//unsigned char start_positon;
unsigned char second=0; /*相应的位置上要显示的字符，时分秒，10*（时，分，秒）*/
unsigned char ten_second=0;
unsigned char miniute=0;
unsigned char ten_miniute=0;
unsigned char hour=0;
unsigned char ten_hour=0; //char code int2charLCD[]="0123456789";
///////////////////////////////////////////////////////////////////////////////
void fun_wait_bf(void) ///读，等待，busy标志位，busy=0 方可进行操作
{
RS = RS_INST;
RW = RW_READ;
E = E_READ;
while (BF)
{
}
}
void fun_write_e(void) //制造一个E 的上升沿，能够为写数据服务
{
E=0;
E=0;
E=1;
E=1;
E=0;
E=0;
}
void fun_write_instruction(unsigned char instruction_data)//函数１—写命令
{
fun_wait_bf(); //在开始操作前，确定bf,负责等待到 lcd 模块空闲后再操作
RS = RS_INST; //指向指令寄存器
RW = RW_WRITE; //写操作控制
P0 = instruction_data; //将命令送如IO口 //具体指令码送P0口，即DB7~DB0
fun_write_e(); // e制造一个xia升沿，让指令写入，lcd模块的内部寄存器
}
void fun_write_data(unsigned char data_data) //函数２－写数据
{
fun_wait_bf(); //在开始操作前，确定bf,负责等待到 lcd 模块空闲后再操作
RS = RS_DATA; //指向数据寄存器
RW = RW_WRITE; //写操作控制
P0 = data_data; //具体数据送P0口，即DB7~DB0
fun_write_e(); // e制造一个上升沿，让数据写入，lcd模块的内部寄存器
}
/*
*函数介绍： .显示位置的控制，根据 line ,row 的值设定，随意开始显示的位置
*输入参数： line 行 =1，2 row =0~15.
*输出参数：
*返回值 ：
*/
void fun_display_position(unsigned char line,unsigned char row) //
{
unsigned char start_position = 0;
if (line == 1)
{
start_position = DDRAM_ADD_INI_1 + row; //开始位置设定在 第一行，根据row定第几列
}
if (line == 2 )
{
start_position = DDRAM_ADD_INI_2 + row; //开始位置设定在 第二行，根据row定第几列
}
fun_write_instruction(start_position);//－－读写数据位置命令
}
void fun_display_char(unsigned char *p_char) //函数３－显示字符 //显示字符符子函数
{
while (*p_char) //指针指向要显示字符的首地址，只要字符就传送字符对应的字模
{ //直到指针找不到字符为止，判断为要传送的字符结束。
fun_write_data(*p_char);
p_char++;
}
}
void fun_display_num4(unsigned long int zhengshu)//函数４－显示整数
{
unsigned char ge,shi,bai,qian;
if ((zhengshu>=1000) && (zhengshu<=9999)) //数值再10的3次方以上
{
qian = zhengshu/1000;
bai = (zhengshu%1000)/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+qian;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=100) && (zhengshu<=999)) //数值再10的2次方以上
{
bai = zhengshu/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=10) && (zhengshu<=99)) //数值再10的1次方以上
{
shi = zhengshu/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=0) && (zhengshu<=9)) //只有个位
{
ge = (zhengshu%10);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
}
/*************************************************************************
*函数介绍：显示数值子函数，调用该函数（整数部分的数值，小数部分的数值)，
*输入参数：整数部分的最大值，显示为10000000，小数部分显示3位，
*输出参数：小数部分，输入0，显示 。000， 输入123 显示 。123，以此类推
*返回值 ：
*/////////////////////////////////////////////////////////////////////
void fun_display_num_dot(unsigned long int zhengshu,unsigned int dot)
{
unsigned char ge,shi,bai,qian,wang,wang10,wang100,wang1000,dot1,dot01,dot001;
if ((zhengshu>=10000000) && (zhengshu<99999999)) //数值再10的7次方以上
{
wang1000 = zhengshu/10000000; //取各个数量级位，
wang100 = (zhengshu%10000000)/1000000;
wang10 = (zhengshu%1000000)/100000;
wang = (zhengshu%100000)/10000;
qian = (zhengshu%10000)/1000;
bai = (zhengshu%1000)/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+wang1000; //显示各个数量级位置
fun_write_data(*p_number);
p_number = &num_dis_code[0]+wang100;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+wang10;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+wang;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+qian;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=1000000) && (zhengshu<9999999)) //数值再10的6次方以上
{
wang100 = zhengshu/1000000; //
wang10 = (zhengshu%1000000)/100000;
wang = (zhengshu%100000)/10000;
qian = (zhengshu%10000)/1000;
bai = (zhengshu%1000)/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+wang100;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+wang10;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+wang;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+qian;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=100000) && (zhengshu<999999)) //数值再10的5次方以上
{
wang10 = zhengshu/100000;
wang = (zhengshu%100000)/10000;
qian = (zhengshu%10000)/1000;
bai = (zhengshu%1000)/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+wang10;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+wang;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+qian;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=10000) && (zhengshu<99999)) //数值再10的4次方以上
{
wang = zhengshu%100000/10000;
qian = (zhengshu%10000)/1000;
bai = (zhengshu%1000)/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+wang;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+qian;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=1000) && (zhengshu<9999)) //数值再10的3次方以上
{
qian = zhengshu/1000;
bai = (zhengshu%1000)/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+qian;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=100) && (zhengshu<999)) //数值再10的2次方以上
{
bai = zhengshu/100;
shi = (zhengshu%100)/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+bai;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
fun_write_data(*p_number);
}
if ((zhengshu>=10) && (zhengshu<99)) //数值再10的1次方以上
{
shi = zhengshu/10;
ge = (zhengshu%10);
p_number = &num_dis_code[0]+shi;
fun_write_data(*p_number);
p_number = &num_dis_code[0]+ge;
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