📄 有哪位高手在iccavr下用过pcf8563时钟芯片啊? (ourdev_cn 我们的电子开发社区).mht
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=
<BR> TWD=
R =3D Data; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> &nb=
sp;while (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xF8)!=3D MT_DATA_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR><BR> TWCR&=
nbsp;=3D(1<<TWINT)|(1<<TWEN)|(1<<TWSTO); =20
<BR>} =20
=
<BR><BR><BR>//-----------------------------------------------------------=
------------------=20
=
<BR>//Func Name: TWI/=
I2c Read Byte=20
=
<BR>//Parameter: Device&nb=
sp;Address (DeviceAddr), Data Address (DataAddr)=20
=
<BR>//Return Value: i=
nt=20
=
<BR>//Description: TWI/I2C=
one byte read operation=20
=
<BR>//-------------------------------------------------------------------=
----------=20
=
<BR><BR>int TWIReadByte(unsigned int DeviceAddr, unsi=
gned int DataAddr) =20
<BR>{ =20
=
<BR> uns=
igned int i; =20
=
<BR> =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWSTA)|(1<<TWEN); =
=
<BR> whi=
le(!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR & 0xf8) !=3D START) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
<BR> =20
=
<BR> TWD=
R =3DDeviceAddr|TWI_WRITE; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xf8)!=3D MT_SLAW_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR> &nb=
sp; =20
=
<BR> TWD=
R =3DDataAddr; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xf8)!=3D MT_DATA_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR> &nb=
sp; =20
=
<BR> &nb=
sp;TWCR =3D (1<<TWINT)|(1<<TWSTA)|(1<<TWEN);&=
nbsp;=20
=
<BR> whi=
le(!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR & 0xf8) !=3D RE_START) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
<BR> =20
=
<BR> TWD=
R =3DDeviceAddr|TWI_READ; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xf8)!=3D MR_SLAR_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
<BR> =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if ((TWSR&0x=
f8)!=3D 0x58) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR> &nb=
sp;i=3DTWDR; =20
=
<BR> &nb=
sp;=20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN)|(1<<TWSTO); &=
nbsp;=20
=
<BR> ret=
urn i; =20
<BR>} =20
=
<BR><BR><BR>//-----------------------------------------------------------=
------------------=20
=
<BR>//Func Name: TWI/=
I2c Read Word=20
=
<BR>//Parameter: Device&nb=
sp;Address (DeviceAddr), Data Address (DataAddr)=20
=
<BR>//Return Value: i=
nt=20
=
<BR>//Description: TWI/I2C=
one word read operation=20
=
<BR>//-------------------------------------------------------------------=
----------=20
=
<BR><BR>int TWIReadWord(unsigned int DeviceAddr, unsi=
gned int DataAddr) =20
<BR>{ =20
=
<BR> uns=
igned int i; =20
=
<BR> =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWSTA)|(1<<TWEN); =
=
<BR> whi=
le(!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR & 0xf8) !=3D START) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
<BR> =20
=
<BR> TWD=
R =3DDeviceAddr|TWI_WRITE; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xf8)!=3D MT_SLAW_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR> &nb=
sp; =20
=
<BR> TWD=
R =3DDataAddr; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xf8)!=3D MT_DATA_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR> &nb=
sp; =20
=
<BR> &nb=
sp;TWCR =3D (1<<TWINT)|(1<<TWSTA)|(1<<TWEN);&=
nbsp;=20
=
<BR> whi=
le(!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR & 0xf8) !=3D RE_START) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
<BR> =20
=
<BR> TWD=
R =3DDeviceAddr|TWI_READ; =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if&=
nbsp;((TWSR&0xf8)!=3D MR_SLAR_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
<BR> =20
=
<BR>// T=
WCR =3D (1<<TWINT)|(1<<TWEN); =20
=
<BR> TWC=
R =3D (1<<TWINT)|(1<<TWEA)|(1<<TWEN); =20
=
<BR> whi=
le (!(TWCR & (1<<TWINT))); =20
=
<BR> if ((TWSR&0x=
f8)!=3D MR_DATA_ACK) =20
=
<BR> &nb=
sp; ErrorCode =3D ERRO=
R_CODE_TWI; =20
=
<BR> &nb=
sp;i=3DTWDR; =20
=
<BR> &nb=
sp;=20
=
<BR> &nb=
sp;TWCR =3D (1<<TWINT)|(1<<TWEN);=20
=
<BR>// &=
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