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app/app_oven_controller/include/common/i2c-api.h 2.61 KB
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  //------------------------------------------------------------------------------
  // 프로젝트 : ETRI I2C AGENT
  // 파 일 : i2c_api.h
  // 설 명 : I2C DEVICE DRIVE API INCLUDE
  //
  // 작 성 : 유영창 frog@falinux.com
  //------------------------------------------------------------------------------
  
  #ifndef _I2C_API_LIB_H_
  #define _I2C_API_LIB_H_
  
  // #include <linux/i2c.h>
  
  #define I2C_RETRIES	0x0701	/* number of times a device address      */
  				/* should be polled when not            */
                                  /* acknowledging 			*/
  #define I2C_TIMEOUT	0x0702	/* set timeout - call with int 		*/
  
  
  /* this is for i2c-dev.c	*/
  #define I2C_SLAVE	0x0703	/* Change slave address			*/
  				/* Attn.: Slave address is 7 or 10 bits */
  #define I2C_SLAVE_FORCE	0x0706	/* Change slave address			*/
  				/* Attn.: Slave address is 7 or 10 bits */
  				/* This changes the address, even if it */
  				/* is already taken!			*/
  #define I2C_TENBIT	0x0704	/* 0 for 7 bit addrs, != 0 for 10 bit	*/
  
  #define I2C_FUNCS	0x0705	/* Get the adapter functionality */
  #define I2C_RDWR	0x0707	/* Combined R/W transfer (one stop only)*/
  #define I2C_PEC		0x0708	/* != 0 for SMBus PEC                   */
  
  #define I2C_SMBUS	0x0720	/* SMBus-level access */
  
  /* ... algo-bit.c recognizes */
  #define I2C_UDELAY	0x0705	/* set delay in microsecs between each	*/
  				/* written byte (except address)	*/
  #define I2C_MDELAY	0x0706	/* millisec delay between written bytes */
  
  #define __u32       unsigned long
  
  
  
  #define I2C_NO_ERROR             		    0000 // 에러가 없다.
  #define I2C_UNKONW_COMMAND       		    7001 // 알수 없는 프로토콜 명령이다.
  #define I2C_NOT_FIND_MAJOR	                7002 // I2C 디바이스 드라이버 주번호 획득 실패
  #define I2C_NOT_FIND_BUS   		            7003 // I2C 버스를 발견할수 없다.
  #define I2C_NOT_FIND_DEVICE  		        7004 // I2C 디바이스를 발견할수 없다.
  #define I2C_READ_DEVICE             		7005 // 읽기 실패
  #define I2C_WRITE_DEVICE            		7006 // 쓰기 실패
  
  
  typedef struct 
  {
      int            fd;
      char           node_fname[128];
  } i2c_bus_t;
  
  struct i2c_rdwr_ioctl_data 
  {
          struct i2c_msg *msgs;    /* pointers to i2c_msgs */
          __u32 nmsgs;                    /* number of i2c_msgs */
  };
  
  typedef struct 
  {
      int           bus;
      unsigned int  addr;
      int           size;
      unsigned char data[512];
  } __attribute__ ((packed)) access_data_t;
  
  
  extern int  i2c_init               ( void );
  extern int  i2c_get_bus_count      ( void );
  extern int  i2c_read_data( access_data_t* access_data );
  extern int  i2c_write_data( access_data_t* access_data );
  
  #endif  // _I2C_API_LIB_H_