/*------------------------------------------------------------------*/
/*?---?STC?MCU?Limited?---------------------------------------------*/
/*?---?STC12C5Axx?Series?MCU?A/D?Conversion?Demo?-------------------*/
/*?---?Mobile:?（86）13922805190?-------------------------------------*/
/*?---?Fax:?86-0513-550129565501294755012969?---------------------*/
/*?---?Tel:?86-0513-550129285501292955012966----------------------*/
/*?---?Web:?www.STCMCU.com?-----------------------------------------*/
/*?---?Web:?www.GXWMCU.com?-----------------------------------------*/
/*?If?you?want?to?use?the?program?or?the?program?referenced?in?the??*/
/*?article?please?specify?in?which?data?and?procedures?from?STC????*/
/*------------------------------------------------------------------*/

#include?“reg51.h“
#include?“intrins.h“
#include?“AD.h“
/*Declare?SFR?associated?with?the?ADC?*/
sfr?ADC_CONTR???=???0xBC;???????????//ADC?control?register
sfr?ADC_RES?????=???0xBD;???????????//ADC?high?8-bit?result?register
sfr?ADC_LOW2????=???0xBE;???????????//ADC?low?2-bit?result?register
sfr?P1ASF???????=???0x9D;???????????//P1?secondary?function?control?register

/*Define?ADC?operation?const?for?ADC_CONTR*/
#define?ADC_POWER???0x80????????????//ADC?power?control?bit
#define?ADC_FLAG????0x10????????????//ADC?complete?flag
#define?ADC_START???0x08????????????//ADC?start?control?bit
#define?ADC_SPEEDLL?0x00????????????//420?clocks
#define?ADC_SPEEDL??0x20????????????//280?clocks
#define?ADC_SPEEDH??0x40????????????//140?clocks
#define?ADC_SPEEDHH?0x60????????????//70?clocks




/*----------------------------
Get?ADC?result
----------------------------*/
BYTE?GetADCResult（BYTE?ch）
{
????ADC_CONTR?=?ADC_POWER?|?ADC_SPEEDLL?|?ch?|?ADC_START;
????_nop_（）;????????????????????????//Must?wait?before?inquiry
????_nop_（）;
????_nop_（）;
????_nop_（）;
????while?（!（ADC_CONTR?&?ADC_FLAG））;//Wait?complete?flag
????ADC_CONTR?&=?~ADC_FLAG;?????????//Close?ADC
????return?ADC_RES;?????????????????//Return?ADC?result
}

/*----------------------------
Initial?ADC?sfr
----------------------------*/
void?InitADC（）
{
????P1ASF?=?0x0e;???????????????????//初始化ADC通道
????ADC_RES?=?0;????????????????????//Clear?previous?result
????ADC_CONTR?=?ADC_POWER?|?ADC_SPEEDLL;
????Delay（2）;???????????????????????//ADC?power-on?and?delay
}

/*----------------------------
Software?delay?function
----------------------------*/
void?Delay（WORD?n）
{
????WORD?x;

????while?（n--）
????{
????????x?=?5000;
????????while?（x--）;
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????2578??2017-04-08?18:44??AD.c
?????文件?????????168??2017-04-01?18:15??AD.h
?????文件??????137949??2018-04-14?10:45??ADC.uvgui.63279
?????文件???????71638??2018-10-05?18:24??ADC.uvgui.ly
?????文件???????85821??2018-04-13?16:47??ADC.uvgui.Sx
?????文件????????6716??2018-04-13?21:27??ADC.uvopt
?????文件???????14046??2017-04-09?21:24??ADC.uvproj
?????文件????????5921??2018-04-14?10:45??mian.c
?????文件?????????182??2017-03-11?16:14??scope.h
?????文件????????6376??2016-04-01?17:01??STARTUP.A51
?????文件???????18708??2017-03-11?14:50??STC12C5A60S2.h
?????文件?????????357??2017-03-26?00:25??uart.h