汉字显示时间

汉字显示时间//***********************主***控****程********序******************** //****************************************************************** //***************程序完成于2013年07月17日********************//***************程序员：李大猛************************************ //**********黄河水利职业技术学院自动化系电信工程****************** //****************************************************************** #include <absacc.h>#include <intrins.h>#include <reg51.h>#include "HZcode.h"#include "LCD.h"#include "1302.h"#include "key.h"#include "adc0831.h"uchar time0_count; //time0计数器//time0初始化void time0_init(void){EA = 1;ET0 = 1;TMOD = 0x01;PT01;==0x3C;TH0TL0 = 0xB0;TR0 = 1;}void main(void){I_init();InitLCD();time0_init();show_hz();show_date_time();while(1){judge_key();}}void time0_interrupt(void)interrupt 1{=0x3c;TH0TL0 = 0xb0;time0_count++;if(time0_count==20){time0_count=0;show_date_time();a = readadc();a/100;b1==(a%100)/10;b2(a%100)%10;=b3r_show_ad();P3 = a; //进行数模转换}}/*-------------------------------------------------------------------------- ABSACC.HDirect access to 8051, extended 8051 and Philips 80C51MX memory areas. Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved.--------------------------------------------------------------------------*/#ifndef __ABSACC_H__#define __ABSACC_H__#define CBYTE ((unsigned char volatile code *) 0)#define DBYTE ((unsigned char volatile data *) 0)#define PBYTE ((unsigned char volatile pdata *) 0)#define XBYTE ((unsigned char volatile xdata *) 0)#define CWORD ((unsigned int volatile code *) 0)#define DWORD ((unsigned int volatile data *) 0)#define PWORD ((unsigned int volatile pdata *) 0)#define XWORD ((unsigned int volatile xdata *) 0)#ifdef __CX51__#define FV AR(object, addr) (*((object volatile far *) (addr)))#define FARRAY(object, base) ((object volatile far *) (base))#define FCV AR(object, addr) (*((object const far *) (addr)))#define FCARRAY(object, base) ((object const far *) (base))#else#define FV AR(object, addr) (*((object volatile far *) ((addr)+0x10000L))) #define FCV AR(object, addr) (*((object const far *) ((addr)+0x810000L))) #define FARRAY(object, base) ((object volatile far *) ((base)+0x10000L)) #define FCARRAY(object, base) ((object const far *) ((base)+0x810000L))#endif#endif/*--------------------------------------------------------------------------INTRINS.HIntrinsic functions for C51.Copyright (c) 1988-2004 Keil Elektronik GmbH and Keil Software, Inc.All rights reserved.--------------------------------------------------------------------------*/#ifndef __INTRINS_H__#define __INTRINS_H__extern void _nop_ (void);extern bit _testbit_ (bit);extern unsigned char _cror_ (unsigned char, unsigned char);extern unsigned int _iror_ (unsigned int, unsigned char);extern unsigned long _lror_ (unsigned long, unsigned char);extern unsigned char _crol_ (unsigned char, unsigned char); extern unsigned int _irol_ (unsigned int, unsigned char); extern unsigned long _lrol_ (unsigned long, unsigned char); extern unsigned char _chkfloat_(float);extern void _push_ (unsigned char _sfr);extern void _pop_ (unsigned char _sfr);#endif/*--------------------------------------------------------------------------REG51.HHeader file for generic 80C51 and 80C31 microcontroller.Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc. All rights reserved.--------------------------------------------------------------------------*/#ifndef __REG51_H__#define __REG51_H__/* BYTE Register */sfr P0 = 0x80;sfr P1 = 0x90;sfr P2 = 0xA0;sfr P3 = 0xB0;sfr PSW = 0xD0;sfr ACC = 0xE0;sfr B = 0xF0;sfr SP = 0x81;sfr DPL = 0x82;sfr DPH = 0x83;sfr PCON = 0x87;sfr TCON = 0x88;sfr TMOD = 0x89;sfr TL0 = 0x8A;sfr TL1 = 0x8B;sfr TH0 = 0x8C;sfr TH1 = 0x8D;sfr IE = 0xA8;sfr IP = 0xB8;sfr SCON = 0x98;sfr SBUF = 0x99;/* BIT Register */sbit CY = 0xD7; sbit AC = 0xD6; sbit F0 = 0xD5; sbit RS1 = 0xD4; sbit RS0 = 0xD3; sbit OV = 0xD2; sbit P = 0xD0;/* TCON */ sbit TF1 = 0x8F; sbit TR1 = 0x8E; sbit TF0 = 0x8D; sbit TR0 = 0x8C; sbit IE1 = 0x8B; sbit IT1 = 0x8A; sbit IE0 = 0x89; sbit IT0 = 0x88;/* IE */sbit EA = 0xAF; sbit ES = 0xAC; sbit ET1 = 0xAB; sbit EX1 = 0xAA; sbit ET0 = 0xA9; sbit EX0 = 0xA8;/* IP */sbit PS = 0xBC; sbit PT1 = 0xBB; sbit PX1 = 0xBA; sbit PT0 = 0xB9; sbit PX0 = 0xB8;/* P3 */sbit RD = 0xB7; sbit WR = 0xB6; sbit T1 = 0xB5; sbit T0 = 0xB4; sbit INT1 = 0xB3; sbit INT0 = 0xB2; sbit TXD = 0xB1; sbit RXD = 0xB0;sbit SM0 = 0x9F;sbit SM1 = 0x9E;sbit SM2 = 0x9D;sbit REN = 0x9C;sbit TB8 = 0x9B;sbit RB8 = 0x9A;sbit TI = 0x99;sbit RI = 0x98;#endif//黄河水利职业技术学院char code HZcode[18][32]={{0x00,0x00,0xFE,0x02,0x12,0x92,0x92,0x92,0xF2,0x92,0x92,0x92,0x12,0x02 ,0xFE,0x00,0x00,0x00,0xFF,0x40,0x48,0x48,0x48,0x48,0x4F,0x48,0x4A,0x4C,0x48,0x40,0xFF,0x00},{0x00,0x00,0x10,0x10,0x90,0x10,0x10,0x11,0x16,0x10,0x10,0x10,0xD0,0x10,0x10,0x00,0x00,0x40,0x40,0x40,0x40,0x43,0x5C,0x40,0x40,0x50,0x4C,0x43,0x40,0x40,0x40,0x40},{0x00,0x10,0x10,0x12,0xD2,0x52,0x5F,0x52,0xF2,0x52,0x5F,0x52,0xD2,0x12,0x10,0x10,0x00,0x00,0x00,0x00,0x9F,0x52,0x32,0x12,0x1F,0x12,0x32,0x52,0x9F,0x00,0x00,0x00},{0x00,0x10,0x60,0x02,0x8C,0x00,0x04,0xE4,0x24,0x24,0xE4,0x04,0x04,0xFC,0x04,0x04,0x00,0x04,0x04,0x7E,0x01,0x00,0x00,0x0F,0x04,0x04,0x0F,0x40,0x80,0x7F,0x00,0x00},{0x00,0x00,0x20,0x20,0x20,0xA0,0x60,0x00,0xFF,0x60,0x80,0x40,0x20,0x18,0x00,0x00,0x00,0x20,0x10,0x08,0x06,0x01,0x40,0x80,0x7F,0x00,0x01,0x02,0x04,0x08,0x10,0x10},{0x00,0x40,0x44,0x44,0x44,0xC4,0xFE,0x42,0x43,0x42,0x00,0xF8,0x00,0x00,0xFF,0x00,0x00,0x20,0x10,0x0C,0x03,0x00,0xFF,0x01,0x02,0x04,0x00,0x0F,0x40,0x80,0x7F,0x00},{0x00,0x02,0x02,0xFE,0x92,0x92,0xFE,0x02,0x02,0xFC,0x04,0x04,0x04,0x04,0xFC,0x00,0x00,0x08,0x18,0x0F,0x08,0x04,0xFF,0x04,0x80,0x63,0x19,0x01,0x01,0x09,0x33,0xC0},{0x00,0x00,0x10,0x60,0x80,0x00,0xFF,0x00,0x00,0x00,0xFF,0x00,0x00,0xC0,0x30,0x00,0x00,0x40,0x40,0x40,0x43,0x40,0x7F,0x40,0x40,0x40,0x7F,0x42,0x41,0x40,0x40,0x40},{0x00,0x10,0x10,0x10,0xFF,0x10,0x90,0x08,0x88,0x88,0x88,0xFF,0x88,0x88,0x88,0x08,0x00,0x04,0x44,0x82,0x7F,0x01,0x80,0x80,0x40,0x43,0x2C,0x10,0x28,0x46,0x81,0x80},{0x00,0x00,0x10,0x10,0x10,0x10,0xD0,0x30,0xFF,0x30,0xD0,0x12,0x1C,0x10,0x10,0x00,0x00,0x10,0x08,0x04,0x02,0x01,0x00,0x00,0xFF,0x00,0x00,0x01,0x02,0x04,0x08,0x10},{0x00,0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00,0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,0x06,0x05,0x04,0x04,0x04,0x04,0x04},{0x00,0x00,0xFE,0x22,0x5A,0x86,0x10,0x0C,0x24,0x24,0x25,0x26,0x24,0x24,0x14,0x0C,0x00,0x00,0xFF,0x04,0x08,0x07,0x80,0x41,0x31,0x0F,0x01,0x01,0x3F,0x41,0x41,0x71},{0x40,0x20,0x10,0x0C,0xE3,0x22,0x22,0x22,0xFE,0x22,0x22,0x22,0x22,0x02,0x00,0x00,0 x04,0x04,0x04,0x04,0x07,0x04,0x04,0x04,0xFF,0x04,0x04,0x04,0x04,0x04,0x04,0x00},{0x00,0x00,0x00,0x00,0x00,0xFF,0x11,0x11,0x11,0x11,0x11,0xFF,0x00,0x00,0x00,0x00,0x 00,0x40,0x20,0x10,0x0C,0x03,0x01,0x01,0x01,0x21,0x41,0x3F,0x00,0x00,0x00,0x00},{0x00,0x00,0x00,0xFE,0x42,0x42,0x42,0x42,0x42,0x42,0x42,0xFE,0x00,0x00,0x00,0x00,0 x00,0x00,0x00,0x3F,0x10,0x10,0x10,0x10,0x10,0x10,0x10,0x3F,0x00,0x00,0x00,0x00},{0x00,0xFC,0x44,0x44,0x44,0xFC,0x10,0x90,0x10,0x10,0x10,0xFF,0x10,0x10,0x10,0x00,0 x00,0x07,0x04,0x04,0x04,0x07,0x00,0x00,0x03,0x40,0x80,0x7F,0x00,0x00,0x00,0x00},{0x80,0x40,0x20,0x98,0x87,0x82,0x80,0x80,0x83,0x84,0x98,0x30,0x60,0xC0,0x40,0x00,0 x00,0x80,0x40,0x20,0x10,0x0F,0x00,0x00,0x20,0x40,0x3F,0x00,0x00,0x00,0x00,0x00},{0x12,0x12,0xD2,0xFE,0x91,0x11,0xC0,0x38,0x10,0x00,0xFF,0x00,0x08,0x10,0x60,0x00,0 x04,0x03,0x00,0xFF,0x00,0x83,0x80,0x40,0x40,0x20,0x23,0x10,0x08,0x04,0x03,0x00}};char code Numcode[11][16]={{0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x0F,0x10,0x20,0x20,0x 10,0x0F,0x00},{0x00,0x10,0x10,0xF8,0x00,0x00,0x00,0x00,0x00,0x20,0x20,0x3F,0x20,0x20,0x00,0x00},{0x00,0x70,0x08,0x08,0x08,0x88,0x70,0x00,0x00,0x30,0x28,0x24,0x22,0x21,0x30,0x00},{0x00,0x30,0x08,0x88,0x88,0x48,0x30,0x00,0x00,0x18,0x20,0x20,0x20,0x11,0x0E,0x00},{0x00,0x00,0xC0,0x20,0x10,0xF8,0x00,0x00,0x00,0x07,0x04,0x24,0x24,0x3F,0x24,0x00},{0x00,0xF8,0x08,0x88,0x88,0x08,0x08,0x00,0x00,0x19,0x21,0x20,0x20,0x11,0x0E,0x00},{0x00,0xE0,0x10,0x88,0x88,0x18,0x00,0x00,0x00,0x0F,0x11,0x20,0x20,0x11,0x0E,0x00},{0x00,0x38,0x08,0x08,0xC8,0x38,0x08,0x00,0x00,0x00,0x00,0x3F,0x00,0x00,0x00,0x00},{0x00,0x70,0x88,0x08,0x08,0x88,0x70,0x00,0x00,0x1C,0x22,0x21,0x21,0x22,0x1C,0x00},{0x00,0xE0,0x10,0x08,0x08,0x10,0xE0,0x00,0x00,0x00,0x31,0x22,0x22,0x11,0x0F,0x00},{0x00,0x00,0x00,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x30,0x00,0x00,0x00}};#include <absacc.h>#include <intrins.h>#include <reg51.h>//#include "1302.h"// LCD128*64 数据线#define LCD12864DataPort P1#define uchar unsigned char#define uint unsigned char// LCD128*64 I/O 信号管脚sbit di = P2^0; // 数据\指令选择sbit rw = P2^2; // 读\写选择sbit en = P2^1; // 读\写使能sbit cs1= P2^3; // 片选1,低有效(前64列)sbit cs2= P2^4; // 片选2,低有效(后64列)void nop(void){_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_(); _nop_();}//状态检查void CheckState(void){dat;uchardat = 0x00;di=0;rw=1;/* do{P1=0xff;en=1;dat=P1;en=0;//仅当第7位为0时才可操作dat&=0x80;}while(dat);*/}//写显示数据//dat:显示数据void WriteByte(uchar dat){CheckState();di=1;rw=0;LCD12864DataPort=dat;en=1;en=0;}/*-----------------------------------------------------------------------------------------------------*/ //向LCD发送命令//command :命令SendCommandToLCD(uchar command){CheckState();rw=0;di=0;LCD12864DataPort=command;en=1;en=0;}/*----------------------------------------------------------------------------------------------------*/ //设定行地址(页)--X 0-7void SetLine(uchar line){line &= 0x07; // 0<=line<=7line |= 0xb8; //1011 1xxxSendCommandToLCD(line);}//设定列地址--Y 0-63void SetColumn(uchar column){column &= 0x3f; // 0=<column<=63column |= 0x40; //01xx xxxxSendCommandToLCD(column);}//设定显示开始行--XXvoid SetStartLine(uchar startline) //0--63{&=0x07;//startlinestartline |= 0xc0; //1100 0000SendCommandToLCD(startline);}//开关显示void SetOnOff(uchar onoff){onoff|=0x3e;111x//0011SendCommandToLCD(onoff);}/*---------------------------------------------------------------------------------------------------*///选择屏幕//screen: 0-全屏,1-左屏,2-右屏void SelectScreen(uchar screen){ //北京显示器:负有效 cs1: 0--右; cs2: 0--左switch(screen){0:casecs1=0;//全屏nop();cs2=0;nop();break;1:casecs1=1;//左屏nop();cs2=0;nop();break;2:casecs1=0;//右屏nop();cs2=1;nop();break;default:break;}}/*---------------------------------------------------------------------------------------------------*/ //清屏//screen: 0-全屏,1-左屏,2-右void ClearScreen(uchar screen){i,j;ucharSelectScreen(screen);for(i=0;i<8;i++){SetLine(i);for(j=0;j<64;j++){WriteByte(0x00);}}}/*--------------------------------------------------------------------------------------------------*/ //显示8*8点阵//lin:行(0-7), column: 列(0-127)//address : 字模区首地址void Show8x8(uchar lin,uchar column,uchar *address){uchari;{return;}// if(column>128)if(column<64){//如果列数<64则从第一屏上开始写SelectScreen(1);SetLine(lin);SetColumn(column);for(i=0;i<8;i++){if(column+i<64){WriteByte(*(address+i));}else{SelectScreen(2);SetLine(lin);SetColumn(column-64+i);WriteByte(*(address+i));}}}else{//否则从第二屏上开始写SelectScreen(2);//防止越界column-=64;SetLine(lin);SetColumn(column);for(i=0;i<8;i++){if(column+i<64){WriteByte(*(address+i));}else{SelectScreen(1);SetLine(lin);SetColumn(column-64+i);WriteByte(*(address+i));}}}}//显示数字8*16void ShowNumber(uchar lin,uchar column,uchar num){*address;ucharaddress=&Numcode[num][0];Show8x8(lin,column,address);Show8x8(lin+1,column,address+8);}//显示汉字16*16void ShowChina(uchar lin,uchar column,uchar num){*address;uchar// if(lin>7 || column>127){return;}&HZcode[num][0];=addressShow8x8(lin,column,address);Show8x8(lin,column+8,address+8);Show8x8(lin+1,column,address+16);Show8x8(lin+1,column+8,address+24);}void InitLCD(void) //初始化LCD{uchar//延时i=2000;while(i--);SetOnOff(1); //开显示ClearScreen(1);//清屏ClearScreen(2);SetStartLine(0); //开始行:0}void r_show8x8(uchar lin,uchar column,uchar *address){i,r_data;ucharif(column<64){//如果列数<64则从第一屏上开始写 SelectScreen(1);SetLine(lin);SetColumn(column);for(i=0;i<8;i++){if(column+i<64){~(*(address+i));=r_dataWriteByte(r_data);}else{SelectScreen(2);SetLine(lin);SetColumn(column-64+i);~(*(address+i));=r_dataWriteByte(r_data);}}}else{SelectScreen(2);//否则从第二屏上开始写//防止越界column-=64;SetLine(lin);SetColumn(column);for(i=0;i<8;i++){if(column+i<64){r_data~(*(address+i));=WriteByte(r_data);}else{SelectScreen(1);SetLine(lin);SetColumn(column-64+i);=~(*(address+i));r_dataWriteByte(r_data);}}}}void r_ShowNumber(uchar lin,uchar column,uchar num){*address;ucharaddress=&Numcode[num][0];r_show8x8(lin,column,address);r_show8x8(lin+1,column,address+8);}#include <absacc.h>#include <intrins.h>#include <reg51.h>#define uchar unsigned char#define DS1302_SECOND 0x80#define DS1302_MINUTE 0x82#define DS1302_HOUR 0x84#define DS1302_WEEK 0x8A#define DS1302_DAY 0x86#define DS1302_MONTH 0x88#define DS1302_YEAR 0x8Csbit DS1302_CLK = P2^6; //实时时钟时钟线引脚sbit DS1302_IO = P2^5; //实时时钟数据线引脚sbit DS1302_RST = P2^7; //实时时钟复位线引脚uchar read_1302(void) //从1302中读取一个字节{i,data_1302;ucharfor(i=0;i<8;i++){data_1302>>=1;if(DS1302_IO){data_1302|=0x80;}DS1302_CLK=1;DS1302_CLK=0;}(data_1302);return}void write_1302(uchar data_1302)//向1302中写入一个字节{i;ucharfor(i=0;i<8;i++){DS1302_IO=(bit)(data_1302&0x01);DS1302_CLK=1;DS1302_CLK=0;data_1302>>=1;}}//向1302的某一地址中写入一个字节的数据void write_all_1302(uchar addr,uchar data_1302){0;=DS1302_RSTDS1302_CLK = 0;1;DS1302_RST=write_1302(addr);write_1302(data_1302);DS1302_CLK = 1;=0;DS1302_RST}//从1302的某一地址中读取一个字节的数据uchar read_all_1302(uchar addr){data_1302;uchar0;DS1302_RST=DS1302_CLK = 0;1;=DS1302_RSTwrite_1302(addr|0x01);read_1302();data_1302=DS1302_CLK = 1;0;DS1302_RST=(data_1302);return}void DS1302_SetProtect(bit flag) //是否写保护{if(flag)write_all_1302(0x8E,0x10);elsewrite_all_1302(0x8E,0x00);}//停止1302时钟void stop_1302(void){uchari;i = read_all_1302(DS1302_SECOND);i |= 0x80;write_all_1302(DS1302_SECOND,i);}//启动1302时钟void start_1302(void){i;uchari = read_all_1302(DS1302_SECOND);0x7f;&=iwrite_all_1302(DS1302_SECOND,i);}//读出1302的时间序列void read_serial(uchar *j){i;uchar0;DS1302_RST=DS1302_CLK = 0;1;=DS1302_RSTwrite_1302(0xbf);//0xbf为连续读出的命令代码 for(i=0;i<8;i++){read_1302();=*(j+i)nop();}DS1302_CLK = 1;=0;DS1302_RST}//写入1302的时间序列void write_date_time(uchar *j){i;uchar=0;DS1302_RSTDS1302_CLK = 0;1;=DS1302_RSTwrite_1302(0xbe);//0xbe为连续写入的命令代码 for(i=0;i<8;i++){write_1302(*(j+i));}DS1302_CLK = 1;0;DS1302_RST=}#include <absacc.h>#include <intrins.h>#include <reg51.h>#include "24c64.h"#include "lcd_show.h"sbit key_1 = P0^7;sbit key_2 = P0^6;sbit key_3 = P0^5;sbit key_4 = P0^4;void key_delay(uchar i){while(i--);}void key_1_f(void){w_24c64_data(0x00,0x00,a); }void key_2_f(void){*p_c4;ucharc1,c2,c3,c4;ucharp_c4 = &c4;r_24c64_data(0x00,0x00,p_c4);c1 = c4/100;c2 = (c4%100)/10;c3 = (c4%100)%10;ShowNumber(4,0,c1);ShowNumber(4,8,c2);ShowNumber(4,16,c3);}void key_3_f(void){}void judge_key(void){if((!key_1) || (!key_2) || (!key_3)) {key_delay(2000);if(!key_1){while(!key_1){key_delay(1000);}key_1_f();}if(!key_2)else{while(!key_2){key_delay(1000);}key_2_f();}if(!key_3)else{while(!key_3){key_delay(1000);}key_3_f();}else{}}}#include <reg51.h>#include <absacc.h>#include <intrins.h>#include "i2c.h"#define uchar unsigned char#define W_24C64 0xa0#define R_24C64 0xa1//******************24C64操作*********************//void delay_8ms(void){i;uchar1500;=iwhile(i--);}//写入24C64void w_24c64_data(uchar addr_24c64_H,uchar addr_24c64_L,uchar data_w) {I_start();if(I_send(W_24C64)){&& I_send(addr_24c64_L))if(I_send(addr_24c64_H){if(I_send(data_w)){I_stop();}else{I_stop();}}else{I_stop();}}else{I_stop();}}//读24c64void r_24c64_data(uchar addr_24c64_H,uchar addr_24c64_L,uchar *p_r) {I_start();if(I_send(W_24C64)){&& I_send(addr_24c64_L))if(I_send(addr_24c64_H){I_start();if(I_send(R_24C64)){SDA = 1;*(p_r)=I_receive();I_clock();I_stop();}else{I_stop();}}else{I_stop();}}else{I_stop();}}//写入24c64序列void w_24c64_serial(uchar addr_24c64_H,uchar addr_24c64_L,uchar *p_w){i;ucharI_start();if(I_send(W_24C64) && I_send(addr_24c64_H) && I_send(addr_24c64_L)) {for(i=0;i<16;i++){if(I_send(*(p_w+i))){if(i==15){I_stop();delay_8ms();}}else{I_stop();}}}else{I_stop();}}//读出24c64序列void r_24c64_serial(uchar addr_24c64_H,uchar addr_24c64_L,uchar *p_r){i;ucharI_start();if(I_send(W_24C64) && I_send(addr_24c64_H) && I_send(addr_24c64_L)) {I_start();if(I_send(R_24C64)){SDA = 1;for(i=0;i<16;i++){I_receive();=*(p_r+i)if(i==15){I_clock();I_stop();}else{I_Ack();}}}else{I_stop();}}else{I_stop();}}#include <reg51.h>#include <intrins.h>#define HIGH 1#define LOW 0#define FALSE 0#define TRUE ~FALSE#define uchar unsigned charsbit SCL = P0^4;sbit SDA = P0^3;//延时函数void delay(void){_nop_();_nop_();_nop_();_nop_();}//提供I2C总线工作时序中的起始位void I_start(void){SDA = HIGH;delay();SCL = HIGH;delay();SDA = LOW;//当SCL为高时，SDA的一个下降沿作为起始位 delay();SCL = LOW;delay();}//提供I2C总线工作时序中的停止位void I_stop(void){SDA = LOW;delay();SCL = HIGH;delay();SDA = HIGH;//当SCL为高时，SDA的一个上升沿作为停止位 delay();SCL = LOW;delay();}//I2C总线初始化void I_init(void){SCL = LOW;I_stop();}//提供I2C总线的时钟信号，并返回时钟电平为高期间SDA信号线上状态bit I_clock(void){sample;bitSCL = HIGH;delay();sample = SDA;SCL = LOW;delay();(sample);return}//向I2C总线发送8位数据，并请求一个应答信号ACK。