📄 at24c01-02-04-08-16-32系列eeprom驱动程序，经典之作(c语言).mht
字号:
=
(i--)<BR>{<BR>SDA=3D(bit)(ch&0x80);<BR>_nop_();_nop_();_nop_();_nop_(=
);_nop_();<BR>ch<<=3D1;<BR>SCL=3D1;<BR>_nop_();_nop_();_nop_();_nop=
_();_nop_();<BR>SCL=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();<BR>}=
<BR>_nop_();_nop_();_nop_();_nop_();_nop_();<BR>_nop_();_nop_();_nop_();_=
nop_();_nop_();<BR>}</P><P>/*--------------------------------=
----------------------------------------------<BR>=B5=F7=D3=C3=B7=BD=CA=BD=
=A3=BAvoid=20
ACK(void)=20
=
=A9=882001/03/23<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=C4=DA=BA=AF=CA=FD=A3=AC=
=CB=BD=D3=D0=A3=AC=D3=C3=BB=A7=B2=BB=D6=B1=BD=D3=B5=F7=D3=C3=A1=A3<BR>---=
-------------------------------------------------------------------------=
---*/<BR>void=20
ACK(void)<BR>{<BR>unsigned char=20
=
time_1;<BR>SDA=3D1;<BR>SCL=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_(=
);<BR>SCL=3D1;<BR>time_1=3D5;<BR>while(SDA)=20
{if (!time_1) break;}=20
=
//ACK<BR>SCL=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();<BR>}</P&=
gt;<P><BR>void=20
WriteIIC_24C01(unsigned char address,unsigned char=20
ddata)<BR>{</P><P> SCL=3D1;<BR>_nop_(); =
_nop_();=20
_nop_(); _nop_(); _nop_(); _nop_();=20
=
//Tsu:STA<BR>SDA=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();=
=20
//Thd:STA<BR>SCL=3D0; //START</P><P> =
write_8bit(=20
(address<<1) & 0xfe);=20
=
//=D0=B4=D2=B3=B5=D8=D6=B7=BA=CD=B2=D9=D7=F7=B7=BD=CA=BD,=B6=D4=D3=DA24C3=
2=A3=AD24C256=A3=ACpage=B2=BB=C6=F0=D7=F7=D3=C3<BR>ACK();<BR>write_8bit(d=
data);=20
=
//=B7=A2=CB=CD=CA=FD=BE=DD<BR>ACK();<BR>SDA=3D0;<BR>_nop_();SCL=3D1;_nop_=
();_nop_();_nop_();_nop_();_nop_();_nop_();<BR>SDA=3D1;=20
=
//STOP<BR>delay();<BR>}</P><P>/*-----------------------------=
-------------------------------------------------------------------------=
---------<BR>=B5=F7=D3=C3=B7=BD=CA=BD=A3=BAvoid=20
WriteIIC_24CXX(enum EEPROMTYPE eepromtype,unsigned int=20
address,unsigned char ddata)=20
=
=A9=882001/09/18<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=B6=D4=D3=DAIIC=D0=BE=C6=
=AC24CXX=A3=AC=D4=DA=D6=B8=B6=A8=B5=D8=D6=B7address=D0=B4=C8=EB=D2=BB=B8=F6=
=D7=D6=BD=DAddata<BR>----------------------------------------------------=
-------------------------------------------------------------*/<BR>void=20
WriteIIC_24CXX(enum EEPROMTYPE eepromtype,unsigned int=20
address,unsigned char ddata)<BR>{ unsigned char=20
page,address_in_page;</P><P> =
if(eepromtype=3D=3DIIC24C01)=20
=
//=C8=E7=B9=FB=CA=C724c01<BR>{<BR>WriteIIC_24C01(address,ddata);<BR>retur=
n;<BR>}</P><P>=20
page=3D(unsigned char)(address>>8) &=20
=
0x07;<BR>page=3Dpage<<1;<BR>address_in_page=3D(unsigned=20
char)(address);</P><P> SCL=3D1;<BR>_nop_(); =
_nop_();=20
_nop_(); _nop_(); _nop_(); _nop_();=20
=
//Tsu:STA<BR>SDA=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();=
=20
//Thd:STA<BR>SCL=3D0; //START</P><P> =
write_8bit(0xa0 |=20
page);=20
=
//=D0=B4=D2=B3=B5=D8=D6=B7=BA=CD=B2=D9=D7=F7=B7=BD=CA=BD,=B6=D4=D3=DA24C3=
2=A3=AD24C256=A3=ACpage=B2=BB=C6=F0=D7=F7=D3=C3<BR>ACK();<BR>if(eepromtyp=
e>IIC24C16)=20
=
//=C8=E7=B9=FB=CA=C724C01=A3=AD24C16=A3=AC=B5=D8=D6=B7=CE=AA=D2=BB=D7=D6=BD=
=DA;24C32=A3=AD24C256=A3=AC=B5=D8=D6=B7=CE=AA=B6=FE=D7=D6=BD=DA<BR>{<BR>w=
rite_8bit(address>>8);<BR>ACK();<BR>}<BR>write_8bit(address_in_page=
);<BR>ACK();<BR>write_8bit(ddata);<BR>ACK();<BR>SDA=3D0;<BR>_nop_();SCL=3D=
1;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();<BR>SDA=3D1;=20
=
//STOP<BR>delay();<BR>}</P><P></P><P>unsigned=20
char ReadIIC_24C01(unsigned char address)<BR>{<BR>unsigned =
char=20
ddata=3D0;<BR>unsigned char i=3D8;</P><P>=20
SCL=3D1;<BR>_nop_(); _nop_(); _nop_(); _nop_(); _nop_(); =
_nop_();=20
=
//Tsu:STA<BR>SDA=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();=
=20
//Thd:STA<BR>SCL=3D0; //START</P><P> =
write_8bit(=20
(address<<1) | 0x01);=20
=
//=D0=B4=D2=B3=B5=D8=D6=B7=BA=CD=B2=D9=D7=F7=B7=BD=CA=BD<BR>ACK();</P&=
gt;<P> while=20
=
(i--)<BR>{<BR>SDA=3D1;<BR>ddata<<=3D1;<BR>SCL=3D0;_nop_();_nop_();_=
nop_();_nop_();_nop_();SCL=3D1;<BR>if=20
(SDA) ddata|=3D0x01;<BR>}</P><P>=20
=
SCL=3D0;_nop_();SCL=3D1;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();<=
BR>SDA=3D0;_nop_();SCL=3D1;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_(=
);<BR>SDA=3D1;=20
//STOP<BR>delay();<BR>return=20
=
ddata;</P><P>}</P><P></P><P><BR>/*---=
-------------------------------------------------------------------------=
------------------------<BR>=B5=F7=D3=C3=B7=BD=CA=BD=A3=BAunsigned=20
char ReadIIC_24CXX(enum EEPROMTYPE eepromtype,unsigned int =
address)=20
=
=A9=882001/09/18<BR>=BA=AF=CA=FD=CB=B5=C3=F7=A3=BA=B6=C1=C8=A1IIC=D0=BE=C6=
=AC24CXX=A3=AC=D6=B8=B6=A8=B5=D8=D6=B7address=B5=C4=CA=FD=BE=DD=A1=A3<BR>=
-------------------------------------------------------------------------=
-----------------------------*/<BR>unsigned=20
char ReadIIC_24CXX(enum EEPROMTYPE eepromtype,unsigned int =
address)<BR>{ unsigned char =
page,address_in_page;<BR>unsigned char=20
ddata=3D0;<BR>unsigned char=20
i=3D8;<BR>if(eepromtype=3D=3DIIC24C01)<BR>{<BR>return(=20
ReadIIC_24C01(address) );<BR>}</P><P> =
page=3D(unsigned=20
char)(address>>8) &=20
=
0x07;<BR>page=3Dpage<<1;<BR>address_in_page=3D(unsigned=20
char)(address);</P><P> =
SDA=3D0;_nop_();SCL=3D0;=20
//START<BR>write_8bit(0xa0 | page);=20
=
//=D0=B4=D2=B3=B5=D8=D6=B7=BA=CD=B2=D9=D7=F7=B7=BD=CA=BD,=B6=D4=D3=DA24C3=
2=A3=AD24C256=A3=ACpage=B2=BB=C6=F0=D7=F7=D3=C3<BR>ACK();<BR>if(eepromtyp=
e>IIC24C16)=20
=
//=C8=E7=B9=FB=CA=C724C32=A3=AD24C256=A3=AC=B5=D8=D6=B7=CE=AA=B6=FE=D7=D6=
=BD=DA=A3=AC=CF=C8=CB=CD=B8=DF=CE=BB=A3=AC=BA=F3=CB=CD=B5=CD=CE=BB<BR>{<B=
R>write_8bit(address>>8);<BR>ACK();<BR>}<BR>//=C8=E7=B9=FB=CA=C724C=
01=A3=AD24C16=A3=AC=B5=D8=D6=B7=CE=AA=D2=BB=D7=D6=BD=DA;<BR>write_8bit(ad=
dress_in_page);<BR>ACK();</P><P>=20
=
//=D2=D4=C9=CF=CA=C7=D2=BB=B8=F6=A1=B0=D1=C6=A1=B1=D0=B4=B2=D9=D7=F7=A3=AC=
=CF=E0=B5=B1=D3=DA=C9=E8=D6=C3=B5=B1=C7=B0=B5=D8=D6=B7</P><P>=
=20
=
SCL=3D1;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();=20
=
//Tsu:STA<BR>SDA=3D0;<BR>_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();=
=20
//Thd:STA<BR>SCL=3D0; //START</P><P> =
write_8bit(0xa1);=20
=
//=D0=B4=B4=D3=B5=D8=D6=B7=A3=AC=D6=C3=CE=AA=B6=C1=C4=A3=CA=BD<BR>ACK();<=
BR>while=20
=
(i--)<BR>{<BR>SDA=3D1;<BR>ddata<<=3D1;<BR>SCL=3D0;_nop_();_nop_();_=
nop_();_nop_();_nop_();SCL=3D1;<BR>if=20
(SDA) ddata|=3D0x01;<BR>}</P><P>=20
=
SCL=3D0;_nop_();SCL=3D1;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();<=
BR>SDA=3D0;_nop_();SCL=3D1;_nop_();_nop_();_nop_();_nop_();_nop_();_nop_(=
);<BR>SDA=3D1;=20
//STOP<BR>delay();<BR>return=20
=
ddata;<BR>}</P><P>/*=B7=D6=CE=F6=A3=BA<BR>=B8=C3=D0=BE=C6=AC=B2=
=C9=D3=C3=B4=AB=CD=B3=B5=C4IIC=BF=DA=B5=C4=B9=E6=D4=BC=D0=CE=CA=BD=A3=AC=CA=
=C7=D2=BB=B8=F6=B1=EA=D7=BC=B5=C4=BE=AD=B5=E4IIC=B7=E2=D7=B0=A1=A3<BR>=D7=
=A2=A3=BA=CA=B9=D3=C3=B8=C3=B3=CC=D0=F2=CA=B1=D7=A2=D2=E2=B8=C4=B1=E4=D0=BE=
=C6=AC=B8=F7=B8=F6=BD=D3=BF=DA=B5=C4=D0=DE=B8=C4=A1=A3=D7=A2=D2=E2=C6=C1=B1=
=CE=D6=F7=BA=AF=CA=FD=A1=A3=20
<BR>*/</P><P>main()<BR>{<BR>unsigned int=20
i;<BR>unsigned char=20
=
kk,j[32];<BR>delay();</P><P><BR>kk=3DReadIIC_24C01( 12=20
=
);<BR>WriteIIC_24C01(12,0x67);<BR>kk=3DReadIIC_24C01(12);</P><P&=
gt;<BR>for(i=3D0;i<32;i++)=20
=
j[i]=3DReadIIC_24CXX(IIC24C01,i);</P><P><BR>for(i=3D0;i<32=
;i++)=20
j[i]=3Di*2;</P><P> for(i=3D0;i<32;i++)=20
=
WriteIIC_24CXX(IIC24C01,i,0x55);</P><P></P><P>=20
for(i=3D0;i<32;i++) j[i]=3D0;</P><P>=20
for(i=3D0;i<32;i++)=20
=
j[i]=3DReadIIC_24CXX(IIC24C02,i);</P><P>}</P><P> =
<BR></FONT><BR><BR>
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