#include?“system.h“
#include?“oc_i2c_regs.h“
#include?“alt_types.h“

void?I2CWaitTIP（alt_u32?base）;

/*********************************************************************************************************
**?Function?name:			InitI2C
**
**?Descriptions:			Initialize?the?I2C?Open?Core.?The?frequency?of?SCL?is?set?as?freq
**????????????????????Interrupt?will?be?or?not?be?enabled?by?the?IEN??
**
**?input?parameters:	base:?The?base?address?of?I2C?Core;
**????????????????????freq:?The?frequency?of?SCL?we?want
**????????????????????IEN?:?When?the?IEN?is?1?interrupt?will?be?enabled;
**??????????????????????????When?the?IEN?is?NOT?1?interrupt?will?be?disabled.???????????????????????
**						
**?Returned?value:		None?
**?????????
**?Used?global?variables:	None
**?Calling?modules:			??None
**
**?Created?by:				Jing.Zhang
**?Created?Date:			2005/09/30
**-------------------------------------------------------------------------------------------------------
**?Modified?by:
**?Modified?date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void?InitI2C（alt_u32?base?alt_u32?freq?alt_u8?IEN）
{
	alt_u32?prescale;
	//?Calculate?the?prescale?value
	prescale?=?ALT_CPU_FREQ/（（freq<<2）?+?freq）;
??//?Setup?prescaler?for?the?freq?of?SCL?with?sysclk?of?ALT_CPU_FREQ
??IOWR_OC_I2C_PRERLO（base?prescale?&?0xff）;
??IOWR_OC_I2C_PRERHI（base（prescale?&?0xff00）>>8）;
??//?Enable?core
??if（IEN?==?1）?//?Enable?interrupt
??{
??	IOWR_OC_I2C_CTR（base?0xC0）;
??}
??else?//?Enable?core?while?disable?interrupt
??{
??	IOWR_OC_I2C_CTR（base?0x80）;
??}
}

/*********************************************************************************************************
**?Function?name:?????I2CWaitTIP
**
**?Descriptions:??????Wait?for?the?completion?of?transfer.?
**
**?input?parameters:??base:????The?base?address?of?I2C?Core;
**?????????????????
**????????????
**?Returned?value:????None?
**?????????
**?Used?global?variables:?None
**?Calling?modules:???????None
**
**?Created?by:????????Jing.Zhang
**?Created?Date:??????2005/09/30
**-------------------------------------------------------------------------------------------------------
**?Modified?by:
**?Modified?date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void?I2CWaitTIP（alt_u32?base）
{
??while?（IORD_OC_I2C_SR（base）?&?I2C_SR_TIP）?{}
}

/*********************************************************************************************************
**?Function?name:			I2CWrite
**
**?Descriptions:			Write?num?bytes?data?to?slave?device?by?I2C?bus.?
**
**?input?parameters:	base:????The?base?address?of?I2C?Core;
**????????????????????address:?The?add

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????31277??2007-01-22?20:55??oc_i2c_master\cb_generator.pl

?????文件???????7781??2007-01-22?20:55??oc_i2c_master\class.ptf

?????文件????????567??2007-01-22?20:55??oc_i2c_master\使用說明.txt

?????文件????????324??2007-01-22?20:55??oc_i2c_master\HAL\inc\oc_i2c.h

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master\HAL\inc

?????文件????????130??2007-01-22?20:55??oc_i2c_master\HAL\src\component.mk

?????文件???????6717??2007-03-15?17:08??oc_i2c_master\HAL\src\oc_i2c.c

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master\HAL\src

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master\HAL

?????文件??????14480??2007-01-22?20:55??oc_i2c_master\hdl\i2c_master_bit_ctrl.vhd

?????文件??????11845??2007-01-22?20:55??oc_i2c_master\hdl\i2c_master_byte_ctrl.vhd

?????文件??????12010??2007-01-22?20:55??oc_i2c_master\hdl\i2c_master_top.vhd

?????文件???????3253??2007-01-22?20:55??oc_i2c_master\hdl\oc_i2c_master.vhd

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master\hdl

?????文件?????193668??2007-01-22?20:55??oc_i2c_master\I2C_doc\i2c_specs.pdf

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master\I2C_doc

?????文件???????1302??2007-03-15?17:16??oc_i2c_master\inc\oc_i2c_regs.h

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master\inc

?????目錄??????????0??2009-04-01?10:46??oc_i2c_master

-----------?---------??----------?-----??----

???????????????283354????????????????????19