twowire.h

T112 MCU源程码,用于T112外接MCU篇程,用来驱动模拟屏

#ifndef  __TWOWIREPARMS_H__
#define  __TWOWIREPARMS_H__

uCHAR I2CWriteByte  (uCHAR cDevAddr, uCHAR cReg, uCHAR cData);
uCHAR I2CReadByte   (uCHAR cDevAddr, uCHAR cReg);
uCHAR twdWr_Burst_A (uCHAR cReg);
void  twdWr_Burst_D (uCHAR cReg);
void  twdWr_Burst_P (void);

void  twdDelay      (uWORD wLoops);
void  twdDelay1      (uWORD wLoops);
void  OSDCfgWr(uCHAR index,uCHAR dat);

sbit	SDA = P1^7;//P2^7; 
sbit    SCL = P1^6;//P2^6; 
//sbit 	P_SCK=P1^6;
//sbit	P_SDA=P1^7;

#define Set_SDA2High  SDA = 1
#define Set_SDA2Low   SDA = 0
#define Set_SCL2High  SCL = 1
#define Set_SCL2Low   SCL = 0

#define Set_SDA_High  SDA = 1,SDA = 1
#define Set_SDA_Low   SDA = 0,SDA = 0
#define Set_SCL_High  SCL = 1,SCL = 1
#define Set_SCL_Low   SCL = 0,SCL = 0
#define SDA_High      SDA!=0
#define SDA_Low       SDA==0
#define SCL_High      SCL!=0
#define SCL_Low       SCL==0

#define	TWD_SPEED       0x01	
#define	TWD_LONG_TIME	(TWD_SPEED*10)//8
#define	TWD_SHORT_TIME	(TWD_SPEED*4)//2

#endif