AVRCH451驅(qū)動程序頭文件

#ifndef_CH451_H
#define_CH451_H
#include
//CH451命令宏定義
#defineCH451_RESET0x0201//復(fù)位

#defineCH451_LEFT MOV 0x0300//設(shè)置移動方式-左移
#defineCH451_LEFTCYC0x0301//設(shè)置移動方式-左循
#defineCH451_RIGHT MOV 0x0302//設(shè)置移動方式-右移
#defineCH451_RIGHTCYC0x0303//設(shè)置移動方式-右循
#defineCH451_SYSOFF0x0400//關(guān)顯示、鍵盤、看門狗
#defineCH451_SYSON10x0401//開顯示
#defineCH451_SYSON20x0403//開顯示、鍵盤
#defineCH451_SYSON30x0407//開顯示、鍵盤、看門狗功能
#defineCH451_DSP0x0500//設(shè)置默認(rèn)顯示方式
#defineCH451_BCD0x0580//設(shè)置BCD譯碼方式
#defineCH451_TWINKLE0x0600//設(shè)置閃爍控制
#defineCH451_KEY0x0700//讀鍵盤代碼
#defineCH451_DIG00x0800//數(shù)碼管位0顯示
#defineCH451_DIG10x0900//數(shù)碼管位1顯示
#defineCH451_DIG20x0A00//數(shù)碼管位2顯示
#defineCH451_DIG30x0B00//數(shù)碼管位3顯示
#defineCH451_DIG40x0C00//數(shù)碼管位4顯示
#defineCH451_DIG50x0D00//數(shù)碼管位5顯示
#defineCH451_DIG60x0E00//數(shù)碼管位6顯示
#defineCH451_DIG70x0F00//數(shù)碼管位7顯示
//端口宏定義
#defineDCLK(1<<;PA3)
#defineDIN(1<<;PA5)
#defineLOAD(1<<;PA7)
#defineDOUT(1<<;PE5)
#defineCH451_DCLK_HIGHPORTA|=DCLK//時鐘信號
#defineCH451_DCLK_LOWPORTA&=~DCLK
#defineCH451_DIN_HIGHPORTA|=DIN//數(shù)據(jù)輸入
#defineCH451_DIN_LOWPORTA&=~DIN
#defineCH451_LOAD_HIGHPORTA|=LOAD//命令加載信號，上升延激活
#defineCH451_LOAD_LOWPORTA&=~LOAD
#defineCH451_DOUTPINE&DOUT//鍵盤中斷和鍵值數(shù)據(jù)輸出
externucharKeyValue;//鍵值全局聲明
//函數(shù)申明
voidCH451_WriteCommand(uintCommand);//CH451寫命令函數(shù)
voidCH451_Init();//CH451初始化函數(shù)
voidCH451_GetKeyValue();//CH451鍵盤代碼讀取函數(shù)
voidCH451_DisplayDig(ucharDIG,ucharData,ucharPoint);//CH451顯示一位數(shù)碼管函數(shù)
#endif

AVR CH451驅(qū)動程序文件

#include"CH451.h"
ucharKeyValue;//鍵值
//共陰數(shù)碼管編碼表
constucharDSYCode[18]={0x3F,0x06,0x5B,0x4F,//0,1,2,3
0x66,0x6D,0x7D,0x07,//4,5,6,7
0x7F,0x6F,0x77,0x7C,//8,9,A,b
0x39,0x5E,0x79,0x71,//C,d,E,F
0x40,0x00};//-,全滅
constuintDigCode[8]={CH451_DIG0,CH451_DIG1,CH451_DIG2,CH451_DIG3,
CH451_DIG4,CH451_DIG5,CH451_DIG6,CH451_DIG7};
//鍵盤編碼表
constucharKeyCode[16]={0x40,0x41,0x42,0x43,//0,1,2,3
0x48,0x49,0x4A,0x4B,//4,5,6,7
0x50,0x51,0x52,0x53,//8,9,A,B
0x58,0x59,0x5A,0x5B};//C,D,E,F
//CH451寫命令函數(shù)
voidCH451_WriteCommand(uintCommand){
uchari;
CH451_LOAD_LOW;//命令開始
for(i=0;i<12;i++){//送入12位數(shù)據(jù)，低位在前
if(Command&0x0001)CH451_DIN_HIGH;//輸出低位數(shù)據(jù)
elseCH451_DIN_LOW;
CH451_DCLK_LOW;
Command>>=1;//數(shù)據(jù)右移一位
CH451_DCLK_HIGH;//上升沿有效
}
CH451_LOAD_HIGH;//加載數(shù)據(jù)
}
//CH451初始化函數(shù)
voidCH451_Init(){
CH451_DIN_LOW;//低電平使能串行接口
CH451_DIN_HIGH;
CH451_WriteCommand(CH451_RESET);//復(fù)位CH451
CH451_WriteCommand(CH451_SYSON2);//開顯示、鍵盤
DDRE&=~DOUT;//PE5輸入方向
EICRB|=(1<EIMSK|=(1<
}
//CH451鍵值讀取函數(shù)
voidCH451_GetKeyValue(){
uchari;
ucharGetKeyValue=0x00;//鍵盤代碼
CH451_WriteCommand(CH451_KEY);//發(fā)送讀取鍵值命令
for(i=0;i<7;i++){
GetKeyValue<<=1;
if(CH451_DOUT)GetKeyValue|=1;//從高到低讀入451的數(shù)據(jù)
elseGetKeyValue|=0;
CH451_DCLK_LOW;//下降沿有效
CH451_DCLK_HIGH;
}
if(GetKeyValue==0x00)return;//讀出鍵碼為0跳過
for(i=0;i<16;i++){//查找鍵盤代碼對應(yīng)的鍵值
if(GetKeyValue==KeyCode){
KeyValue=i;
break;
}
}
}
//CH451顯示一位數(shù)碼管，DIG選擇數(shù)碼管，Data要顯示的數(shù)字，Point是否顯示小數(shù)點
voidCH451_DisplayDig(ucharDIG,ucharData,ucharPoint){
if(Point==1)CH451_WriteCommand(DigCode[DIG]|(DSYCode[Data]|0x80));
elseCH451_WriteCommand(DigCode[DIG]|DSYCode[Data]);
}