samtwi.h

来自「At91sam7s64+ucosII+pid温度控制」· C头文件 代码 · 共 41 行

#ifndef _SAMTWI_H_
#define _SAMTWI_H_

#define TWI_1BYTE_SUBADDR  1
#define TWI_2BYTE_SUBADDR  1
#define EEROM_ADDR 0XA1			//lsb  1 is 1byte subaddr.0 is 2byte subaddr
#define EEPOT_ADDR0 0X50
#define EEPOT_ADDR1 0X51
#define EEPOT_RWCR 0X90
#define EEPOT_WWCR 0XA0
#define EEPOT_RREG 0XB0
#define EEPOT_WREG 0XC0
#define EEPOT_SKIP 0X20
#define SDA		1<<3
#define SCL		1<<4

#define I2C_SETOUT	(unsigned int) (SCL | SDA)
#define I2C_SETIN	(unsigned int) (SDA)
#define SDA_IS_H	AT91F_PIO_SetOutput(AT91C_BASE_PIOA,SDA)
#define SDA_IS_L	AT91F_PIO_ClearOutput(AT91C_BASE_PIOA,SDA)
#define SCL_IS_H	AT91F_PIO_SetOutput(AT91C_BASE_PIOA,SCL)
#define SCL_IS_L	AT91F_PIO_ClearOutput(AT91C_BASE_PIOA,SCL)
#define SDA_IS_IN   AT91F_PIO_CfgInput(AT91C_BASE_PIOA,SDA)
#define SDA_IS_OUT	AT91F_PIO_CfgOutput(AT91C_BASE_PIOA,SDA)
void TWIinit(void);
void TWIsend(unsigned char mode,unsigned short addr,unsigned char *dat,unsigned char size);
void TWIread(unsigned char mode,unsigned short addr,unsigned char *dat,unsigned char size);
void ADCsend_By_TWI(unsigned char mode,unsigned short addr,unsigned char *dat,unsigned char size);
void ADCread_By_TWI(unsigned char mode,unsigned short addr,unsigned char *dat,unsigned char size);

void I2C_IOinit();			//改iic外设由io控制
void I2C_Start();
void I2C_Stop();
char I2C_WrByte(char x);
char I2C_ReByte(char ask);


#endif