/******************************************
DAC7811驅動程序

制作人:李克成
*****************************************/


#include?
#include

#define?uchar?????unsigned?char
#define?uint??????unsigned?int

#define?SDIN??????PORTB.0
#define?SCLK??????PORTB.1
#define?SYNC??????PORTB.2

#define?SDIN_P????DDRB.0
#define?SCLK_P????DDRB.1
#define?SYNC_P????DDRB.2


/********************************************************************
DAC7811初始化
說明：更具需要更改定義
*******************************************************************/

void?init_DAC7811（void）
{
??????SDIN_P=1;
??????SCLK_P=1;
??????SYNC_P=1;
}


/********************************************************************
DAC7811寫數據
說明：數據格式位，共16位，排列方式為高位在前
前4位位方式選擇碼后12位為DA數據
*********************************************************************/

void?DAC7811（uint?t）
{
??????uchar?i;

??????SYNC=1;?????//初始化
??????SCLK=1;

??????SYNC=0;?????//開始寫入數據

??????for（i=0;i<16;i++）
??????{
????????????if（（t&0x8000）==0x8000）
????????????{
??????????????????SDIN=1;
????????????}
????????????else
????????????{
??????????????????SDIN=0;
????????????}

????????????t<<=1;
????????????SCLK=0;?????//下降沿寫入數據
????????????delay_us（2）;
????????????SCLK=1;?????//恢復
??????}
}

/********************************************************************
DAC7811寫數據
說明：歸一化寫數據，子程序mode位方式字，dat為DA數據
*********************************************************************/

void?DAC7811_A（uchar?modeuint?dat）
{
??????uchar?i;
??????uint?temp;

??????temp=dat;

??????temp|=（（uint）mode<<12）;??????//組合成16位整型控制碼

??????SYNC=1;?????//初始化
??????SCLK=1;

??????SYNC=0;?????//開始寫入數據

??????for（i=0;i<16;i++）
??????{
????????????if（（temp&0x8000）==0x8000）
????????????{
??????????????????SDIN=1;
????????????}
????????????else
????????????{
??????????????????SDIN=0;
????????????}

????????????temp<<=1;
????????????SCLK=0;?????//下降沿寫入數據
????????????delay_us（2）;
????????????SCLK=1;?????//恢復
??????}
}



/********************************************************************
調試主程序
*********************************************************************/

void?main（void）
{
??????init_DAC7811（）;
?????

??????while?（1）
??????{
????????????//DAC7811（0x1ff）;???????????????//函數用法
????????????DAC7811_A（0x014095）;??????//函數用法
??????????
??????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????82004??2010-08-13?15:08??DAC7811\0832測試電路.DSN

?????文件????????432??2011-07-29?17:02??DAC7811\0832測試電路.PWI

?????文件??????83803??2010-08-13?09:40??DAC7811\7811.jpg

?????文件???????3581??2010-08-13?20:13??DAC7811\7811.prj

?????文件??????20714??2011-08-11?09:40??DAC7811\7811測試程序\7811.asm

?????文件???????2537??2011-08-11?09:40??DAC7811\7811測試程序\7811.c

?????文件???????1603??2011-08-11?09:38??DAC7811\7811測試程序\7811.cof

?????文件???????2575??2011-08-11?09:38??DAC7811\7811測試程序\7811.c~

?????文件????????983??2011-08-11?09:38??DAC7811\7811測試程序\7811.hex

?????文件???????4025??2011-08-11?09:40??DAC7811\7811測試程序\7811.i

?????文件?????????40??2011-08-11?09:40??DAC7811\7811測試程序\7811.inc

?????文件??????46226??2011-08-11?09:38??DAC7811\7811測試程序\7811.lst

?????文件????????263??2011-08-11?09:40??DAC7811\7811測試程序\7811.map

?????文件???????1764??2011-08-11?09:38??DAC7811\7811測試程序\7811.obj

?????文件???????3618??2011-08-11?09:56??DAC7811\7811測試程序\7811.prj

?????文件???????3583??2011-08-07?09:44??DAC7811\7811測試程序\7811.pr~

?????文件???????2223??2011-08-11?09:38??DAC7811\7811測試程序\7811.rom

?????文件????????963??2011-08-11?09:40??DAC7811\7811測試程序\7811.sym

?????文件??????????0??2011-08-11?09:56??DAC7811\7811測試程序\7811.txt

?????文件????????279??2011-08-11?09:40??DAC7811\7811測試程序\7811.vec

?????文件???????2575??2011-08-11?09:38??DAC7811\7811測試程序\7811__.c

?????文件?????715101??2010-08-12?21:24??DAC7811\DAC7811.pdf

?????文件??????23520??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.asm

?????文件???????3230??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.c

?????文件???????1803??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.cof

?????文件???????3237??2010-08-15?21:31??DAC7811\dac7811sin\7811sin.c~

?????文件???????1809??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.hex

?????文件???????5054??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.i

?????文件???????1115??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.inc

?????文件??????53123??2010-08-15?21:32??DAC7811\dac7811sin\7811sin.lst

............此處省略146個文件信息