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#ifndef _TWI_SLAVE_H_
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#define _TWI_SLAVE_H_
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#include <inttypes.h>
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#define I2C_SLAVE_ADDRESS               0x50
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#define I2C_PROTOCOL_COMP               1
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#define I2C_CMD_VERSION                 0x01
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#define I2C_CMD_READ_MAG        0x02
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#define I2C_CMD_READ_HEADING    0x03
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#define I2C_CMD_WRITE_CAL       0x04
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#define I2C_CMD_WRITE_EEPROM    0x0A
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#define I2C_CMD_READ_EEPROM     0x0B
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struct I2C_Version_t
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{
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        uint8_t Major;
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        uint8_t Minor;
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        uint8_t Compatible;
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} ;
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struct I2C_Mag_t
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{
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        int16_t MagX;
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        int16_t MagY;
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        int16_t MagZ;
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} ;
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struct I2C_WriteAttitude_t
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{
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        int16_t Nick;
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        int16_t Roll;
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} ;
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struct I2C_WriteCal_t
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{
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        uint8_t CalByte;
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        uint8_t Dummy1;
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        uint8_t Dummy2;
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} ;
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struct I2C_Heading_t
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{
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        int16_t Heading;
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} ;
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extern uint8_t NC_Connected;
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extern struct I2C_Heading_t             I2C_Heading;
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extern struct I2C_WriteAttitude_t       I2C_WriteAttitude;
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extern struct I2C_Mag_t                 I2C_Mag;
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extern struct I2C_Version_t             I2C_Version;
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extern struct I2C_WriteCal_t            I2C_WriteCal;
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void I2C_Init(void);
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#endif // _TWI_SLAVE_H_
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