📄 twi读写时钟芯片pcf8583范例 (ourdev_cn 我们的电子开发社区).mht
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(wr_device_add);//=D0=B4I2C=B4=D3=C6=F7=BC=FE=B5=D8=D6=B7=BA=CD=D0=B4=B7=BD=
=CA=BD=20
=
<BR> Wait();=20
=
<BR> if(TestAc=
k()!=3DMT_SLA_ACK) return 1;//ACK=20
=
<BR> Write8Bit=
(address);//=D0=B424C02=B5=C4ROM=B5=D8=D6=B7=20
=
<BR> Wait();=20
=
<BR> if(TestAc=
k()!=3DMT_DATA_ACK) return 1;//ACK=20
=
<BR> for(i=3D0=
;i<num;i++)=20
=
<BR> &nb=
sp;{=20
=
<BR> &nb=
sp; Write8Bit(ppc[i]);//=D0=B4=CA=FD=BE=DD=B5=BD24C02=B5=C4ROM=20
=
<BR> &nb=
sp; Wait();=20
=
<BR> &nb=
sp; if(TestAck()!=3DMT_DATA_ACK) return 1;//ACK  =
; =20
=
<BR> &nb=
sp;}=20
=
<BR> Stop();//=
I2C=CD=A3=D6=B9=20
=
<BR> // d=
elay_ms(10);//=D1=D3=CA=B1=B5=C8EEPROM=D0=B4=CD=EA=20
=
<BR> clo=
se_twi();=20
=
<BR> return&nb=
sp;0;=20
<BR>}=20
=
<BR>unsigned char wr_ram_one(unsigned char address,&n=
bsp;unsigned char ppc)=20
=
<BR>//unsigned char i2c_Write(unsigned char *Wdata,un=
signed char RomAddress ,unsigned char twx)=20
<BR>{=20
=
<BR> Start();/=
/I2C=C6=F4=B6=AF=20
=
<BR> Wait();=20
=
<BR> if(TestAc=
k()!=3DSTART) return 1;//ACK=20
=
<BR> Write8Bit=
(wr_device_add);//=D0=B4I2C=B4=D3=C6=F7=BC=FE=B5=D8=D6=B7=BA=CD=D0=B4=B7=BD=
=CA=BD=20
=
<BR> Wait();=20
=
<BR> if(TestAc=
k()!=3DMT_SLA_ACK) return 1;//ACK=20
=
<BR> Write8Bit=
(address);//=D0=B424C02=B5=C4ROM=B5=D8=D6=B7=20
=
<BR> Wait();=20
=
<BR> if(TestAc=
k()!=3DMT_DATA_ACK) return 1;//ACK=20
=
<BR> &nb=
sp; Write8Bit(ppc);//=D0=B4=CA=FD=BE=DD=B5=BD24C02=B5=C4ROM=20
=
<BR> &nb=
sp; Wait();=20
=
<BR> if(TestAc=
k()!=3DMT_DATA_ACK) return 1;//ACK  =
; =20
=
<BR> Stop();//=
I2C=CD=A3=D6=B9=20
=
<BR> // d=
elay_ms(10);//=D1=D3=CA=B1=B5=C8EEPROM=D0=B4=CD=EA=20
=
<BR> clo=
se_twi();=20
=
<BR> return&nb=
sp;0;=20
<BR>} <BR>/******************************************=20
=
<BR> &nb=
sp; I2C=D7=DC=CF=DF=B6=C1=D2=BB=B8=F6=D7=D6=BD=DA=20
=
<BR> &nb=
sp; &nbs=
p; =C8=E7=B9=FB=B6=C1=CA=A7=B0=DC=D2=B2=B7=B5=BB=D80=20
<BR>*******************************************/=20
=
<BR>unsigned char readram( unsigned char&=
nbsp;address, unsigned char num, unsigned =
char *ppc)=20
=
<BR>//unsigned char i2c_Read(unsigned char *Wdata,uns=
igned char RomAddress ,unsigned char twx)=20
<BR> {=20
=
<BR> char i;=20
=
<BR> uns=
igned char temp=3D1;=20
=
<BR> Sta=
rt();//I2C=C6=F4=B6=AF=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DSTART) return 0;//ACK  =
; =20
=
<BR> Wri=
te8Bit(wr_device_add);//=D0=B4I2C=B4=D3=C6=F7=BC=FE=B5=D8=D6=B7=BA=CD=D0=B4=
=B7=BD=CA=BD=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DMT_SLA_ACK) return 0;//ACK=20
=
<BR> Wri=
te8Bit(address);//=D0=B424C02=B5=C4ROM=B5=D8=D6=B7=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DMT_DATA_ACK) return 0;=20
=
<BR> &nb=
sp;Re_Start();//I2C=D6=D8=D0=C2=C6=F4=B6=AF=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DRE_START) return 0;=20
=
<BR> Wri=
te8Bit(rd_device_add);//=D0=B4I2C=B4=D3=C6=F7=BC=FE=B5=D8=D6=B7=BA=CD=B6=C1=
=B7=BD=CA=BD=20
=
<BR> Wai=
t();=20
=
<BR> if(=
TestAck()!=3DMR_SLA_ACK) return 0;//ACK=20
=
<BR> // S=
etAck();=20
=
<BR> for=
(i=3D0;i<num;i++)=20
=
<BR> &nb=
sp;{=20
=
<BR> &nb=
sp; Twi();//=C6=F4=B6=AF=D6=F7I2C=B6=C1=B7=BD=CA=BD=20
=
<BR> &nb=
sp; Wait();=20
=
<BR> &nb=
sp; if(TestAck()!=3DMR_DATA_ACK) return 0;// &n=
bsp; NOACK=20
=
<BR> &nb=
sp; ppc[i]=3DTWDR;//=B6=C1=C8=A1I2C=BD=D3=CA=D5=CA=FD=BE=
=DD=20
=
<BR> &nb=
sp;}=20
=
<BR> // S=
etNoAck();=20
=
<BR> Sto=
p();//I2C=CD=A3=D6=B9=20
=
<BR> clo=
se_twi();//I2C=B9=D8=20
=
<BR> ret=
urn temp;=20
<BR> }=20
<BR>/******************************************=20
=
<BR> &nb=
sp; I2C=D7=DC=CF=DF=B6=C1=D2=BB=B8=F6=D7=D6=BD=DA=20
=
<BR> &nb=
sp; &nbs=
p; =C8=E7=B9=FB=B6=C1=CA=A7=B0=DC=D2=B2=B7=B5=BB=D80=20
<BR>*******************************************/=20
=
<BR>unsigned char readram_one( unsigned c=
har address)=20
=
<BR>//unsigned char i2c_Read(unsigned char *Wdata,uns=
igned char RomAddress ,unsigned char twx)=20
<BR> {=20
=
<BR> // if(&nbs=
p;TestAck()!=3DNO_INFO)=20
=
<BR> //&=
nbsp; Stop();=20
=
<BR> uns=
igned char temp=3D1;=20
=
<BR> Sta=
rt();//I2C=C6=F4=B6=AF=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DSTART) return 0;//ACK  =
; =20
=
<BR> Wri=
te8Bit(wr_device_add);//=D0=B4I2C=B4=D3=C6=F7=BC=FE=B5=D8=D6=B7=BA=CD=D0=B4=
=B7=BD=CA=BD=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DMT_SLA_ACK) return 0;//ACK=20
=
<BR> Wri=
te8Bit(address);//=D0=B424C02=B5=C4ROM=B5=D8=D6=B7=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DMT_DATA_ACK) return 0;=20
=
<BR> &nb=
sp;Re_Start();//I2C=D6=D8=D0=C2=C6=F4=B6=AF=20
=
<BR> Wai=
t();=20
=
<BR> if&=
nbsp;(TestAck()!=3DRE_START) return 0;=20
=
<BR> Wri=
te8Bit(rd_device_add);//=D0=B4I2C=B4=D3=C6=F7=BC=FE=B5=D8=D6=B7=BA=CD=B6=C1=
=B7=BD=CA=BD=20
=
<BR> Wai=
t();=20
=
<BR> if(=
TestAck()!=3DMR_SLA_ACK) return 0;//ACK=20
=
<BR> &nb=
sp; Twi();//=C6=F4=B6=AF=D6=F7I2C=B6=C1=B7=BD=CA=BD=20
=
<BR> Wai=
t();=20
=
<BR> if(=
TestAck()!=3DMR_DATA_ACK) return 0;// &n=
bsp; NOACK=20
=
<BR> &nb=
sp; temp=3DTWDR;//=B6=C1=C8=A1I2C=BD=D3=CA=D5=CA=FD=BE=DD=
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