i2cPacket.h

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/****************************************************************************/
#ifndef _I2CPACKET_H
#define _I2CPACKET_H

/******************************************************************************
                   Includes section
******************************************************************************/
// \cond
#include <halClkCtrl.h>
#include <types.h>
// \endcond

/******************************************************************************
                   Define(s) section
******************************************************************************/
#define HAL_I2C_PRESCALER 0ul
// \cond
#if defined(AT91SAM7X256)
  /* AT91C_TWI_IADRSZ_NO */
  #define  HAL_NO_INTERNAL_ADDRESS   (0x0 << 8)
  /* AT91C_TWI_IADRSZ_1_BYTE */
  #define  HAL_ONE_BYTE_SIZE         (0x1 << 8)
  /* AT91C_TWI_IADRSZ_2_BYTE */
  #define  HAL_TWO_BYTE_SIZE         (0x2 << 8)
  /* AT91C_TWI_IADRSZ_3_BYTE */
  #define  HAL_THREE_BYTE_SIZE       (0x3 << 8)
#elif defined(ATMEGA1281) || defined(ATMEGA2561) || defined(ATMEGA1284) || defined(AT90USB1287)
  #define  HAL_NO_INTERNAL_ADDRESS   0x0
  #define  HAL_ONE_BYTE_SIZE         0x1
  #define  HAL_TWO_BYTE_SIZE         0x2
  #define  HAL_THREE_BYTE_SIZE       0x3
#endif
// \endcond

/******************************************************************************
                   Types section
******************************************************************************/
#if defined(AT91SAM7X256)
  typedef enum
  {
    I2C_CLOCK_RATE_250 = F_CPU/(2*250000) - 3, // 200 Kb/s clock rate
    I2C_CLOCK_RATE_125 = F_CPU/(2*125000) - 3, // 125 Kb/s clock rate
    I2C_CLOCK_RATE_100 = F_CPU/(2*100000) - 3, // 100 Kb/s clock rate
    I2C_CLOCK_RATE_62  = F_CPU/(2*62500) - 3   // 62.5 Kb/s clock rate
  } I2cClockRate_t;
#elif defined(ATMEGA1281) || defined(ATMEGA2561) || defined(ATMEGA1284) || defined(AT90USB1287)
  typedef enum
  {
    I2C_CLOCK_RATE_250 = ((F_CPU/250000ul) - 16ul)/(2ul * (1ul << HAL_I2C_PRESCALER) * (1ul << HAL_I2C_PRESCALER)), // 250 Kb/s clock rate
    I2C_CLOCK_RATE_125 = ((F_CPU/125000ul) - 16ul)/(2ul * (1ul << HAL_I2C_PRESCALER) * (1ul << HAL_I2C_PRESCALER)), // 125 Kb/s clock rate
    I2C_CLOCK_RATE_62  = ((F_CPU/62500ul) - 16ul)/(2ul * (1ul << HAL_I2C_PRESCALER) * (1ul << HAL_I2C_PRESCALER))   // 62.5 Kb/s clock rate
  } I2cClockRate_t;
#endif

typedef struct
{
  I2cClockRate_t clockrate; // clock rate
} HAL_i2cMode_t;

/**************************************************************************/
typedef struct
{
  uint8_t id;
  uint16_t length;
  uint8_t *data;
#if defined(AT91SAM7X256)
  uint32_t lengthAddr;
#elif defined(ATMEGA1281) || defined(ATMEGA2561) || defined(ATMEGA1284) || defined(AT90USB1287)
  uint8_t lengthAddr;
#endif

  uint32_t internalAddr;
  void (*f)(bool result);
} HAL_I2cParams_t;

/******************************************************************************
                   Prototypes section
******************************************************************************/
/**************************************************************************/
int HAL_OpenI2cPacket(HAL_i2cMode_t *i2cMode);

/**************************************************************************/
int HAL_CloseI2cPacket(void);

/**************************************************************************/
int HAL_WriteI2cPacket(HAL_I2cParams_t *param);

/**************************************************************************/
int HAL_ReadI2cPacket(HAL_I2cParams_t *param);

#endif /* _I2CPACKET_H */
// eof i2cPacket.h

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