iic.h

LPC213x系列启动代码,支持ADS1.2编译器,已成功运行

#define bSCL				(1 << 2)		// P0.2
#define bSDA				(1 << 3)		// P0.3

#define SET_SDA_OUT()	(IODIR0 |= bSDA)
#define SET_SDA_IN()		(IODIR0 &= ~bSDA)
#define READ_SDA_DATA()	(IOPIN0 & bSDA)
#define SET_SDA_HIGH()	(IOSET0 = bSDA)
#define SET_SDA_LOW()	(IOCLR0 = bSDA)

#define SET_SCL_HIGH()	(IOSET0 = bSCL)
#define SET_SCL_LOW()	(IOCLR0 = bSCL)

void IIC_Start(void);
void IIC_Stop(void);
void IIC_SendByte(UCHAR data);
UCHAR IIC_ReceByte(void);
UCHAR IIC_ReplyBit(void);
void IIC_Answer(void);
void IIC_NoAnswer(void);