#include?
#define?uchar?unsigned?char
#define?uint??unsigned?int
#define?CH451_SYSOFF????0x0402		???//設定系統參數，開顯示關鍵盤
#define?CH451_RESET?????0X0201?????????????//設定復位
#define?CH451_KEY???????0x07ff		???//讀取鍵碼
sbit?dout=P1^3;
sbit?dclk=P1^0;
sbit?din=P1^1;
sbit?load=P1^2;
sbit?sdata?=?P1^0?;
sbit?sclk??=?P1^1?;
sbit?sload?=?P1^2?;
sbit?max_wr?=?P1^3?;
uchar?keycodenum;???????????????????????//定義存放采樣數據的寄存器
void?write（uint?order）;
void?ch451_read（）;
void?write_max262（uchar?dat）;
unsigned?code???M0M1[18]={0x000x000x000x400x400x40
??????????????????????????0x400x400x800x800x800x80
??????????????????????????0x800x800x800x800x800x80};
unsigned??code??f0f1[18]={0x210x210x210x610x610x61
??????????????????????????0x710x610x910xa10xb10xa1
??????????????????????????0xa10xa10xa10xb10x810xa1};
unsigned??code??f2f3[18]={0x120x020x120x520x620x42
??????????????????????????0x620x520xb20xb30xb20xa2
??????????????????????????0x920x820xb20xa20xa20x92};
unsigned??code??f4f5[18]={0x330x230x130x730x630x63
??????????????????????????0x530x530xb30xb30xa30xa3
??????????????????????????0xa30xa30x930x930x930x93};????//3K--20K
unsigned?code???q0q1[18]={0x240x240x240x640x640x64
??????????????????????????0x640x640xa40xa40xa40xa4
??????????????????????????0xa40xa40xa40xa40xa40xa4};
unsigned?code???q2q3[18]={0x150x150x150x550x550x55
??????????????????????????0x550x550x950x950x950x95
??????????????????????????0x950x950x950x950x950x95};
unsigned?code???q4q5[18]={0x260x260x260x660x660x66
??????????????????????????0x660x660xa60xa60xa60xa6
??????????????????????????0xa60xa60xa60xa60xa60xa6};
unsigned?code?????q6[18]={0x070x070x070x470x470x47
??????????????????????????0x470x470x870x870x870x87
??????????????????????????0x870x870x870x870x870x87};??????????????????????????
?main（）
{??din=1;?????????????????????????????????//通知CH451使能四個串行口
???din=0;
???din=1;
???num=0;
???write（CH451_RESET）;????????????????????//設定復位
???write（CH451_SYSOFF）;???????????????????//設定系統參數
?while（1）
???{?ch451_read（）;
????if（keycode==0x40）
?????????{?num++;
?????????keycode=0xff;
?????????}
??write_max262（M0M1[num]）?;??????????//選擇低通，方式1
??write_max262（f0f1[num]）?;??????????//f0f1參數的設置
??write_max262（f2f3[num]）?;??????????//f2f3參數的設置
??write_max262（f4f5[num]）?;??????????//f4f5參數的設置
??write_max262（q0q1[num]）?;??????????//q0q1參數的設置
??write_max262（q2q3[num]）?;??????????//q2q3參數的設置
??write_max262（q4q5[num]）?;??????????//q4q5參數的設置
??write_max262（q6[num]）?;??????????//q6參數的設置
???}
?}



void?write_max262（uchar?dat）
{
?uchar?k?;
?sload?=?0?;
?for（k=0;k<8;k++）
?{
??sclk?=?0?;
??dat?=?dat?<??sdata?=?CY?;
??sclk?=?1?;
?}
?max_wr?=?0?;
?sload?=?1?;
?max_wr?=?1?;
}

void?write（uint?order）??????//數據輸入到CH451子程序
??{
?????uint?i;
?????load=1;
???for（i=0;i<12;i++）
?????{
???????din=ord

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

?????文件???????3752??2009-04-23?21:31??max262程控濾波器\max262main.c

?????目錄??????????0??2009-04-23?21:40??max262程控濾波器

-----------?---------??----------?-----??----

?????????????????3752????????????????????2