ds1621.h

#ifndef _AVRIO_DS1621_H_
#define _AVRIO_DS1621_H_

#include <avrio/twi.h>

__BEGIN_C_DECLS
  /* ======================================================================== */
/* macros =================================================================== */
/* constants ================================================================ */
#define DS1621_BASE 0x90 
#define DS1621_TEMP_ERROR -32768

typedef enum {
  DONE    = _BV(7), 
  THF     = _BV(6), 
  TLF     = _BV(5), 
  NVB     = _BV(4), 
  POL     = _BV(1), 
  ONESHOT = _BV(0), 
  TAF     = THF | TLF, 
  DS1621_DEFAULT_CONFIG = 0 
} eDs1621Cmd;

/* internal public functions ================================================ */

#if defined(__DOXYGEN__)
/*
 * __DOXYGEN__ defined
 * Partie documentation ne devant pas être compilée.
 * =============================================================================
 */
void vDs1621Init (xTwiDeviceAddr xDeviceAddr, uint8_t ucConfig);

inline void vDs1621Start (xTwiDeviceAddr xDeviceAddr);

inline void vDs1621Stop (xTwiDeviceAddr xDeviceAddr);

inline eTwiStatus eDs1621LastError (void);

inline int16_t iDs1621Temp (xTwiDeviceAddr xDeviceAddr);

inline int16_t iDs1621RawTemp(xTwiDeviceAddr xDeviceAddr);

double dDs1621HiResTemp (xTwiDeviceAddr xDeviceAddr);

inline bool xDs1621IsDone (xTwiDeviceAddr xDeviceAddr);

inline bool xDs1621MemIsBusy (xTwiDeviceAddr xDeviceAddr);

void vDs1621SetTh (xTwiDeviceAddr xDeviceAddr, int16_t iTh);

inline int16_t iDs1621Th (xTwiDeviceAddr xDeviceAddr);

inline int16_t iDs1621RawTh(xTwiDeviceAddr xDeviceAddr);

void vDs1621SetTl (xTwiDeviceAddr xDeviceAddr, int16_t iTl);

inline int16_t iDs1621Tl (xTwiDeviceAddr xDeviceAddr);

inline int16_t iDs1621RawTl(xTwiDeviceAddr xDeviceAddr);

inline uint8_t ucDs1621Status (xTwiDeviceAddr xDeviceAddr);

void vDs1621ClrFlags (xTwiDeviceAddr xDeviceAddr, uint8_t ucFlags);

inline uint8_t ucDs1621Counter (xTwiDeviceAddr xDeviceAddr);

inline uint8_t ucDs1621Slope (xTwiDeviceAddr xDeviceAddr);

#else
/*
 * __DOXYGEN__ not defined
 * Partie ne devant pas être documentée.
 * =============================================================================
 */
/* macros =================================================================== */
/* Commandes DS1621 */
#define DS1621_RDTEMP 0xAA
#define DS1621_RWTH   0xA1
#define DS1621_RWTL   0xA2
#define DS1621_RWCONF 0xAC
#define DS1621_RDCNT  0xA8
#define DS1621_RDSLOP 0xA9
#define DS1621_STARTC 0xEE
#define DS1621_STOPC  0x22

/* internal public functions ================================================ */
/* Fonctions de haut niveau */
void vDs1621Init (xTwiDeviceAddr xDeviceAddr, uint8_t ucConfig);
void vDs1621SetTh (xTwiDeviceAddr xDeviceAddr, int16_t iTh);
void vDs1621SetTl (xTwiDeviceAddr xDeviceAddr, int16_t iTl);
void vDs1621ClrFlags (xTwiDeviceAddr xDeviceAddr, uint8_t ucFlags);
double dDs1621HiResTemp (xTwiDeviceAddr xDeviceAddr);

/* Fonctions de bas niveau */
int16_t iDs1621ReadTemp (xTwiDeviceAddr xDeviceAddr, uint8_t ucCmd);
int16_t iDs1621ReadRawTemp (xTwiDeviceAddr xDeviceAddr, uint8_t ucCmd);
void vDs1621WriteTemp (xTwiDeviceAddr xDeviceAddr, uint8_t ucCmd, int16_t iTemp);
uint8_t ucDs1621ReadByte(xTwiDeviceAddr xDeviceAddr, uint8_t ucCmd);
void vDs1621SendCmd (xTwiDeviceAddr xDeviceAddr, uint8_t ucCmd);

/* public variables ========================================================= */
extern eTwiStatus eDs1621LastErrorValue;

/* inline public functions ================================================== */
// -----------------------------------------------------------------------------
INLINE uint8_t
ucDs1621Status(xTwiDeviceAddr xDeviceAddr) {

  return ucDs1621ReadByte(xDeviceAddr, DS1621_RWCONF);
}

// -----------------------------------------------------------------------------
INLINE bool
xDs1621IsDone (xTwiDeviceAddr xDeviceAddr) {

  return ((ucDs1621Status (xDeviceAddr) & DONE) != 0);
}

// -----------------------------------------------------------------------------
INLINE bool
xDs1621MemIsBusy (xTwiDeviceAddr xDeviceAddr) {

  return ((ucDs1621Status (xDeviceAddr) & NVB) != 0);
}

// -----------------------------------------------------------------------------
INLINE void
vDs1621Start(xTwiDeviceAddr xDeviceAddr) {

  vDs1621SendCmd (xDeviceAddr, DS1621_STARTC);
}

// -----------------------------------------------------------------------------
INLINE void
vDs1621Stop(xTwiDeviceAddr xDeviceAddr) {

  vDs1621SendCmd (xDeviceAddr, DS1621_STOPC);
}

// -----------------------------------------------------------------------------
INLINE int16_t
iDs1621Temp(xTwiDeviceAddr xDeviceAddr) {

  return iDs1621ReadTemp(xDeviceAddr, DS1621_RDTEMP);
}

// -----------------------------------------------------------------------------
INLINE int16_t
iDs1621Th(xTwiDeviceAddr xDeviceAddr) {

  return iDs1621ReadTemp(xDeviceAddr, DS1621_RWTH);
}

// -----------------------------------------------------------------------------
INLINE int16_t
iDs1621Tl(xTwiDeviceAddr xDeviceAddr) {

  return iDs1621ReadTemp(xDeviceAddr, DS1621_RWTL);
}

// -----------------------------------------------------------------------------
INLINE int16_t
iDs1621RawTemp(xTwiDeviceAddr xDeviceAddr) {

  return iDs1621ReadRawTemp(xDeviceAddr, DS1621_RDTEMP);
}

// -----------------------------------------------------------------------------
INLINE int16_t
iDs1621RawTh(xTwiDeviceAddr xDeviceAddr) {

  return iDs1621ReadRawTemp(xDeviceAddr, DS1621_RWTH);
}

// -----------------------------------------------------------------------------
INLINE int16_t
iDs1621RawTl(xTwiDeviceAddr xDeviceAddr) {

  return iDs1621ReadRawTemp(xDeviceAddr, DS1621_RWTL);
}

// -----------------------------------------------------------------------------
INLINE uint8_t
ucDs1621Counter(xTwiDeviceAddr xDeviceAddr) {

  return ucDs1621ReadByte(xDeviceAddr, DS1621_RDCNT);
}

// -----------------------------------------------------------------------------
INLINE uint8_t
ucDs1621Slope(xTwiDeviceAddr xDeviceAddr) {

  return ucDs1621ReadByte(xDeviceAddr, DS1621_RDSLOP);
}

// -----------------------------------------------------------------------------
INLINE eTwiStatus
eDs1621LastError (void) {

  return eDs1621LastErrorValue;
}

#endif /* __DOXYGEN__ not defined */
/* ========================================================================== */
__END_C_DECLS
#endif  /* _AVRIO_DS1621_H_ defined */