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-----------------------------------------<BR>=B5=F7=D3=C3=B7=BD=CA=BD=A3=BA=
void=20
SD2001_I2CStart(void) =A9=882001/07/0=20
=
4<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=CB=BD=D3=D0=BA=AF=CA=FD=A3=ACI2C=D7=A8=
=D3=C3<BR>---------------------------------------------------------------=
------------------*/<BR>void=20
=
SD2001_I2CStart(void)<BR>{<BR>EA=3D0;<BR>SD2001_SCL=3D0;<BR>SD2001_SDA=3D=
1;=20
SomeNOP();<BR>SD2001_SCL=3D1; =
SomeNOP();//INI<BR>SD2001_SDA=3D0;=20
SomeNOP(); =
//START<BR>SD2001_SCL=3D0;<BR>}</P><P>void=20
=
I2CStartRAM(void)<BR>{<BR>EA=3D0;<BR>SCLE=3D0;<BR>SDAE=3D1;=20
SomeNOP();<BR>SCLE=3D1; SomeNOP();//INI<BR>SDAE=3D0; =
SomeNOP();=20
=
//START<BR>SCLE=3D0;<BR>}<BR>/*------------------------------------------=
--------------------------------------<BR>=B5=F7=D3=C3=B7=BD=CA=BD=A3=BAv=
oid=20
SD2001_I2CStop(void) =A9=882001/07/0=20
=
4<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=CB=BD=D3=D0=BA=AF=CA=FD=A3=ACI2C=D7=A8=
=D3=C3<BR>---------------------------------------------------------------=
------------------*/<BR>void=20
=
SD2001_I2CStop(void)<BR>{<BR>SD2001_SDA=3D0;<BR>SD2001_SCL=3D0;=20
SomeNOP(); //INI<BR>SD2001_SCL=3D1; =
SomeNOP();<BR>SD2001_SDA=3D1;=20
=
SomeNOP();//STOP<BR>SD2001_SCL=3D0;<BR>EA=3D1;<BR>}</P><P>voi=
d=20
I2CStopRAM(void)<BR>{<BR>SDAE=3D0;<BR>SCLE=3D0; SomeNOP(); =
//INI<BR>SCLE=3D1; SomeNOP();<BR>SDAE=3D1;=20
=
SomeNOP();//STOP<BR>SCLE=3D0;<BR>EA=3D1;<BR>}</P><P>/*-------=
-------------------------------------------------------------------------=
<BR>=B5=F7=D3=C3=B7=BD=CA=BD=A3=BAvoid=20
I2CSend(unsigned char ch) =A9=882001/07/0=20
=
5<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=CB=BD=D3=D0=BA=AF=CA=FD=A3=ACI2C=D7=A8=
=D3=C3<BR>MSB<BR>--------------------------------------------------------=
-------------------------*/<BR>void=20
SD2001_I2CSendByte(unsigned char ch)<BR>{<BR>unsigned char =
=
i=3D8;<BR>while(i--)<BR>{<BR>SD2001_SCL=3D0;_nop_();<BR>SD2001_SDA=3D(bit=
)(ch&0x80);=20
ch<<=3D1; SomeNOP();<BR>SD2001_SCL=3D1;=20
SomeNOP();<BR>}<BR>SD2001_SCL=3D0;<BR>//=20
=
WaitAck();<BR>}</P><P>/*-------------------------------------=
-------------------------------------------<BR>=B5=F7=D3=C3=B7=BD=CA=BD=A3=
=BAvoid=20
I2CSend(unsigned char ch) =A9=882001/07/0=20
=
5<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=CB=BD=D3=D0=BA=AF=CA=FD=A3=ACI2C=D7=A8=
=D3=C3<BR>LSB<BR>--------------------------------------------------------=
-------------------------*/<BR>void=20
SD2001_I2CSendByte1(unsigned char ch)<BR>{<BR>unsigned =
char=20
=
i=3D8;<BR>while(i--)<BR>{<BR>SD2001_SCL=3D0;_nop_();<BR>SD2001_SDA=3D(bit=
)(ch=20
& 0x01); ch>>=3D1; SomeNOP();<BR>SD2001_SCL=3D1; =
=
SomeNOP();<BR>}<BR>SD2001_SCL=3D0;<BR>//WaitAck();<BR>}</P><P>=
;<BR>//ACK<BR>bitout()<BR>{<BR>SD2001_SDA=3D0;<BR>SD2001_SCL=3D0;<BR>SD20=
01_SDA=3D0;<BR>SomeNOP();<BR>SD2001_SCL=3D1;=20
=
SomeNOP();<BR>SD2001_SCL=3D0;<BR>}</P><P>//=BD=D3=CA=DC=CA=B1=
=D6=D3=B5=C41=CE=BB<BR>bit=20
bitin()<BR>{<BR>bit=20
=
temp;<BR>SD2001_SDA=3D1;<BR>SD2001_SCL=3D0;<BR>SomeNOP();<BR>temp=3DSD200=
1_SDA;<BR>SomeNOP();<BR>SD2001_SCL=3D1;<BR>SomeNOP();<BR>SD2001_SCL=3D0;<=
BR>return(temp);<BR>}</P><P>//=BD=D3=CA=DC=CA=B1=D6=D3=B5=C41=
=B8=F6=D7=D6=BD=DA<BR>unsigned=20
char rx()<BR>{<BR>unsigned char i=3D8;<BR>unsigned char=20
=
dat=3D0;<BR>while(i--)<BR>{<BR>dat>>=3D1;<BR>if(bitin())<BR>dat=3Dd=
at|0x80;<BR>}<BR>return(dat);<BR>}</P><P><BR>/*-------------S=
RAM-------------*/</P><P>SRAMACK()<BR>{<BR>SCLE=3D0;=20
SomeNOP(); //ACK<BR>SDAE=3D0; SomeNOP();<BR>SCLE=3D1;=20
SomeNOP();<BR>SCLE=3D0; =
SomeNOP();<BR>}</P><P>void=20
SRAMSent(unsigned char ch) =
//=B7=A2=CB=CD=D2=BB=B8=F6=D7=D6=BD=DA=B8=F8RAM<BR>{<BR>unsigned char=20
=
i=3D8;<BR>while(i--)<BR>{<BR>SCLE=3D0;_nop_();<BR>SDAE=3D(bit)(ch&0x8=
0);=20
ch<<=3D1; SomeNOP();<BR>SCLE=3D1;=20
=
SomeNOP();<BR>SCLE=3D0;<BR>}<BR>SDAE=3D1;</P><P> SCLE=3D0;=20
SomeNOP(); //ACK<BR>SCLE=3D1; SomeNOP(); =
//ACK<BR>while(SDAE=3D=3D1){}=20
//ACK<BR>SCLE=3D0;<BR>}</P><P><BR>SRAMRX()=20
=
//=BD=D3=CA=D5=D2=BB=B8=F6=D7=D6=BD=DA=B4=D3RAM<BR>{<BR>unsigned char=20
=
i=3D8,dat=3D0;<BR>SCLE=3D0;SomeNOP();<BR>SDAE=3D1;SomeNOP();<BR>while(i--=
)<BR>{<BR>SCLE=3D1;SomeNOP();<BR>dat<<=3D1;<BR>dat|=3DSDAE;<BR>SCLE=
=3D0;<BR>}<BR>return(dat);<BR>}<BR>/*=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D*/</P><P&g=
t;</P><P>//=B8=C4=CA=B1=D6=D3<BR>void=20
initSD2001Time(unsigned char year,unsigned char =
month,unsigned=20
char day,unsigned char date,unsigned char hour,unsigned =
char=20
minute,unsigned char=20
=
second)<BR>{<BR>SD2001_I2CStart();<BR>SD2001_I2CSendByte(0x64);=20
=
//=B4=D3=C4=EA=BF=AA=CA=BC=D0=B4<BR>bitout();</P><P> =
SD2001_I2CSendByte1(year);=20
=
//=D0=B4=C8=EB=C4=EA<BR>bitout();<BR>SD2001_I2CSendByte1(month);<BR>bitou=
t();<BR>SD2001_I2CSendByte1(day);<BR>bitout();<BR>SD2001_I2CSendByte1(dat=
e);<BR>bitout();<BR>SD2001_I2CSendByte1(hour);<BR>bitout();<BR>SD2001_I2C=
SendByte1(minute);<BR>bitout();<BR>SD2001_I2CSendByte1(second);<BR>bitout=
();<BR>SD2001_I2CStop();<BR>}</P><P>//=B6=C1=CA=B1=BC=E4<BR>R=
eadSD2001_Time()<BR>{<BR>unsigned=20
char=20
=
time[8]=3D0,i;<BR>SD2001_I2CStart();<BR>SD2001_I2CSendByte(0x65);=20
=
//=B4=D3=C4=EA=BF=AA=CA=BC=B6=C1<BR>bitout();<BR>i=3D8;<BR>while(i--)<BR>=
{<BR>time[i]=3Drx();<BR>bitout();<BR>}<BR>SD2001_I2CStop();<BR>SD2001_yea=
r=20
=3Dtime[7];<BR>SD2001_month =3Dtime[6];<BR>SD2001_day=20
=3Dtime[5];<BR>SD2001_date =3Dtime[4];<BR>SD2001_hour=20
=
=3Dtime[3]&0x7F;<BR>SD2001_minute=3Dtime[2];<BR>SD2001_second=3Dtime[=
1];<BR>}</P><P>//=CA=B1=D6=D3=B3=F5=CA=BC=BB=AF<BR>InitSD2001=
()<BR>{<BR>SD2001_I2CStart();<BR>SD2001_I2CSendByte(0x62);//=D0=B4=D7=B4=CC=
=AC=BC=C4=B4=E6=C6=F7<BR>bitout();<BR>SD2001_I2CSendByte1(0xC2);//Power=20
12/24 INT1AE INT2AE INT1ME INT2ME INT1FE INT2FE<BR>// 1 1 =
0 0 0 0=20
1=20
=
0<BR>SD2001_I2CStop();<BR>}</P><P>//=CF=F2ram=D0=B4=C8=EB=CA=FD=
=BE=DD<BR>SaveToSRAM(unsigned=20
int Address,unsigned char SRAM_Dat)<BR>{<BR>unsigned char=20
=
AddrH,AddrL;<BR>AddrL=3DAddress;<BR>AddrH=3DAddress>>8;</P>&l=
t;P>=20
I2CStartRAM();</P><P> SRAMSent(0xA0);=20
//=CB=CD=B9=D8=BC=FC=D7=D6<BR>SRAMSent(AddrH); =
//=CB=CD=B8=DF=B5=D8=D6=B7 =D2=D1=BE=AD=BA=ACACK<BR>SRAMSent(AddrL);=20
//=CB=CD=B5=CD=B5=D8=D6=B7</P><P> =
SRAMSent(SRAM_Dat);</P><P>=20
=
I2CStopRAM();<BR>}</P><P>//=B4=D3ram=D6=D0=B6=C1=C8=A1=CA=FD=BE=
=DD<BR>LoadFromSRAM(unsigned=20
int Address)<BR>{<BR>unsigned char=20
=
AddrH,AddrL,Dat;</P><P><BR>AddrL=3DAddress;<BR>AddrH=3DAddres=
s>>8;</P><P>=20
I2CStartRAM();<BR>SRAMSent(0xA0); =
//=CB=CD=B9=D8=BC=FC=D7=D6 <BR>SRAMSent(AddrH);=20
//=CB=CD=B8=DF=B5=D8=D6=B7 =D2=D1=BE=AD=BA=ACACK =
<BR>SRAMSent(AddrL); //=CB=CD=B5=CD=B5=D8=D6=B7 </P><P>=20
I2CStartRAM();<BR>SRAMSent(0xA1);</P><P>=20
=
Dat=3DSRAMRX();<BR>I2CStopRAM();<BR>return(Dat);<BR>}<BR>////////////////=
////////////////////////</P><P>main()<BR>{<BR>unsigned=20
char a;</P><P>=20
=
InitSD2001();<BR>//initSD2001Time(0x03,0x01,0x20,0x01,0x15,0x50,0x00);<BR=
>ReadSD2001_Time();<BR>SaveToSRAM(5,20);<BR>a=3DLoadFromSRAM(5);</P>=
;<P><BR>while(1)<BR>{</P><P>=20
ReadSD2001_Time();</P><P>=20
_nop_();<BR>}</P><P>}
<P></P>
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