#include
#include“AD574.h“
#define?AD574_Ctrl_Port_Dir?????????P1DIR
#define?AD574_Ctrl_Port_Out?????????P1OUT
#define?AD574_STS_In????????????????P1IN&BIT2
#define?AD574_Data_Port_Dir?????????P3DIR
#define?AD574_Data_Port_In??????????P3IN
#define?R_C?????????????????????????BIT0
#define?A0??????????????????????????BIT1
#define?STS?????????????????????????BIT2


void?Delay_xms（unsigned??int?x）
{
	unsigned?char?i;
????
	for（i?=?x;?i?>?0;i--）?
??????????_NOP（）;
}

void?Delay_yms（unsigned??int?y）
{
	unsigned?char?i?j;
????
	for（i?=?y;?i?>?0;i--）?
??????????for（j?=?150;?j?>?0;j--）?
??????????_NOP（）;
}
/*********初始化AD574端口************/
void?AD574_Init_Port（）
{
??AD574_Ctrl_Port_Dir?|=?R_C?+?A0;
??AD574_Ctrl_Port_Dir?&=?~STS;
??AD574_Data_Port_Dir?=?0x00;
}
/*------------------------------------------
函數(shù)名稱：AD574_Tran
功????能：采用12位轉換，先轉換高8位，再轉換低4位
參????數(shù)：無
返回值??：Data
--------------------------------------------*/
int?AD574_Tran（）
{
??int?Data_H8?Data_L4??;
??int?Data;

????/****?啟動12位轉換****/
???AD574_Ctrl_Port_Out?&=?~A0;
???AD574_Ctrl_Port_Out?&=?~R_C;
???Delay_xms（25）;
???while（AD574_STS_In）;
??

?????/****高8位并行輸出****/
???AD574_Ctrl_Port_Out?|=?R_C;
???AD574_Ctrl_Port_Out?&=?~A0;?
???Delay_xms（25）;
???Data_H8?=?AD574_Data_Port_In;
??
????/****低4位并行輸出****/
???AD574_Ctrl_Port_Out?|=?A0;
???AD574_Ctrl_Port_Out?|=?R_C;
???Delay_xms（25）;
???Data_L4?=?AD574_Data_Port_In;
??
???Data?=?（（Data_H8<<4）?+?（（Data_L4&0xf0）>>4））;?
???
???return?Data;
}

int?AD574_Vol（）
{
???unsigned?char?i;?
???long?val=0;
??for（i?=?0;?i???{
????val?+=?AD574_Tran（）;
????Delay_yms（500）;
??}
??val?=?val?/?20;
??return?val;
}
/*------------------------------------------
函數(shù)名稱：AD574_Tran_Vol
功????能：把AD轉換出的值轉換為電壓
參????數(shù)：無
返回值??：Data
--------------------------------------------*/
float?AD574_Tran_Vol（int?data）
{
??float?data1;
??data1=（float）（（float）（data*9.98）/4096）-4.98;
??
??return?data1?*?1000;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-07-27?19:20??LCR測量\
?????目錄???????????0??2011-07-28?20:22??LCR測量\AD574\
?????文件????????2097??2011-07-28?20:22??LCR測量\AD574\AD574.c
?????文件?????????161??2011-07-28?14:24??LCR測量\AD574\AD574.h
?????目錄???????????0??2011-07-25?11:40??LCR測量\Adc12\
?????文件????????2283??2011-07-25?11:40??LCR測量\Adc12\Adc12.c
?????文件?????????141??2011-07-08?15:53??LCR測量\Adc12\Adc12.h
?????目錄???????????0??2011-07-28?20:09??LCR測量\Calculate\
?????文件????????3244??2011-07-28?20:09??LCR測量\Calculate\Calculate.c
?????文件?????????377??2011-07-26?13:50??LCR測量\Calculate\Calculate.h
?????目錄???????????0??2011-07-28?20:17??LCR測量\DDS\
?????文件????????1348??2011-07-28?20:17??LCR測量\DDS\DDS.c
?????文件?????????193??2011-07-28?17:57??LCR測量\DDS\DDS.h
?????文件????????3963??2011-07-23?14:24??LCR測量\DDS\MCU_FPGA.c
?????文件????????2934??2011-07-23?16:38??LCR測量\DDS\MCU_FPGA.h
?????目錄???????????0??2011-07-23?11:41??LCR測量\Debug\
?????目錄???????????0??2011-07-28?18:00??LCR測量\Debug\Exe\
?????文件???????60807??2011-07-28?20:22??LCR測量\Debug\Exe\LCR_Measure.d43
?????目錄???????????0??2011-07-23?11:41??LCR測量\Debug\List\
?????目錄???????????0??2011-07-28?20:22??LCR測量\Debug\Obj\
?????文件?????????518??2011-07-28?20:22??LCR測量\Debug\Obj\AD574.pbi
?????文件???????11697??2011-07-28?20:22??LCR測量\Debug\Obj\AD574.r43
?????文件?????????518??2011-07-26?09:32??LCR測量\Debug\Obj\Adc12.pbi
?????文件???????20146??2011-07-26?09:32??LCR測量\Debug\Obj\Adc12.r43
?????文件?????????534??2011-07-28?20:14??LCR測量\Debug\Obj\Calculate.pbi
?????文件???????67730??2011-07-28?20:09??LCR測量\Debug\Obj\Calculate.r43
?????文件?????????510??2011-07-28?20:17??LCR測量\Debug\Obj\DDS.pbi
?????文件????????7202??2011-07-28?20:17??LCR測量\Debug\Obj\DDS.r43
?????文件?????????532??2011-07-28?20:21??LCR測量\Debug\Obj\Display.pbi
?????文件???????59860??2011-07-28?20:21??LCR測量\Debug\Obj\Display.r43
?????文件?????????538??2011-07-28?20:14??LCR測量\Debug\Obj\Init_Clock.pbi
............此處省略381個文件信息