/*************************此部分為I2C總線的驅動程序*************************************/

#include
#include?
#include?
#include?

#define??NOP（）???_nop_（）???/*?定義空指令?*/
#define??_Nop（）??_nop_（）???/*定義空指令*/
?/*
?
sbit?????SCL=P2^0;???????//I2C??時鐘?
sbit?????SDA=P2^1;???????//I2C??數據?
*/


bit?ack;?????????????????/*應答標志位*/
???

/*******************************************************************
?????????????????????起動總線函數???????????????
函數原型:?void??Start_I2c（）;??
功能:?????啟動I2C總線即發送I2C起始條件.??
********************************************************************/
void?Start_I2c（）
{
??SDA=1;?????????/*發送起始條件的數據信號*/
??_Nop（）;
??SCL=1;
??_Nop（）;????????/*起始條件建立時間大于4.7us延時*/
??_Nop（）;
??_Nop（）;
??_Nop（）;
??_Nop（）;????
??SDA=0;?????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-03-12?20:42??四路采集串口顯示\
?????文件???????14717??2011-12-15?11:57??四路采集串口顯示\AD轉換
?????文件???????15560??2011-12-15?11:57??四路采集串口顯示\AD轉換.M51
?????文件????????2092??2009-06-05?00:01??四路采集串口顯示\AD轉換.Uv2.bak
?????文件??????????55??2011-12-15?11:57??四路采集串口顯示\AD轉換.lnp
?????文件????????1655??2010-08-24?16:25??四路采集串口顯示\AD轉換.opt.bak
?????文件????????1639??2011-12-15?11:57??四路采集串口顯示\AD轉換.plg
?????文件???????65672??2011-12-15?12:34??四路采集串口顯示\AD轉換.uvopt
?????文件???????13539??2011-03-10?10:50??四路采集串口顯示\AD轉換.uvproj
?????文件????????1653??2010-08-10?21:02??四路采集串口顯示\AD轉換_Opt.Bak
?????文件????????2132??2008-09-14?23:18??四路采集串口顯示\AD轉換_Uv2.Bak
?????文件???????65672??2011-12-15?11:57??四路采集串口顯示\AD轉換_uvopt.bak
?????文件???????13711??2010-11-12?19:46??四路采集串口顯示\AD轉換_uvproj.bak
?????文件????????5933??2014-03-12?20:18??四路采集串口顯示\DA-AD.C
?????文件???????12204??2014-03-12?20:36??四路采集串口顯示\DA-AD.LST
?????文件???????11083??2014-03-12?20:36??四路采集串口顯示\DA-AD.OBJ
?????文件?????????532??2014-03-12?19:00??四路采集串口顯示\I2C.H
?????文件????????7995??2014-03-12?20:36??四路采集串口顯示\I2C.LST
?????文件????????7964??2014-03-12?20:36??四路采集串口顯示\I2C.OBJ
?????文件????????4504??2014-03-11?15:09??四路采集串口顯示\I2C.c
?????文件????????5115??2002-04-16?15:32??四路采集串口顯示\STARTUP.A51
?????文件???????11665??2014-03-12?20:36??四路采集串口顯示\STARTUP.LST
?????文件?????????749??2014-03-12?20:36??四路采集串口顯示\STARTUP.OBJ
?????文件?????????519??2014-03-12?20:10??四路采集串口顯示\duankou.h
?????文件?????????907??2008-09-14?21:22??四路采集串口顯示\main.LST
?????文件?????????563??2008-09-14?21:22??四路采集串口顯示\main.OBJ
?????文件????????1600??2014-02-18?22:23??四路采集串口顯示\pmwLed.c
?????文件???????17234??2014-03-12?19:32??四路采集串口顯示\串口摸擬AD
?????文件???????21027??2014-03-12?19:32??四路采集串口顯示\串口摸擬AD.M51
?????文件????????1798??2014-03-12?20:42??四路采集串口顯示\串口摸擬AD.Opt
?????文件????????2185??2014-03-12?20:42??四路采集串口顯示\串口摸擬AD.Uv2
............此處省略12個文件信息