TMP42x.h

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#ifndef __TMP42x_H_
#define __TMP42x_H_
 
#include "main.h"
#include "i2c.h"
 
#define LOCAL_TEMP_MSB                      0x00
#define REMOTE1_TEMP_MSB                    0x01
#define REMOTE2_TEMP_MSB                    0x02
#define REMOTE3_TEMP_MSB                    0x03
#define STATUS_REGISTER                     0x08
#define CONFIG1_REGISTER                    0x09
#define CONFIG2_REGISTER                    0x0A
#define CONVERSION_RATE_REGISTER    0x0B
#define ONE_SHOT_START_REGISTER     0x0F
#define LOCAL_TEMP_LSB                      0x10
#define REMOTE1_TEMP_LSB                    0x11
#define REMOTE2_TEMP_LSB                    0x12
#define REMOTE3_TEMP_LSB                    0x13
#define nCORRECTION1_REGISTER           0x21
#define nCORRECTION2_REGISTER           0x22
#define nCORRECTION3_REGISTER           0x23
#define SOFTWARE_RESET_REGISTER     0xFC
#define MAN_ID_REGISTER                     0xFE
#define DEVICE_ID_REGISTER              0xFF
 
typedef enum TMP42x_Type                     {TMP421, TMP422, TMP423} TMP42x_Type;
typedef enum TMP42x_Status                 {TMP42x_OK, TMP42x_TimeOut, TMP42x_Arg_Error} TMP42x_Status;
typedef enum TMP42x_Range                       {TMP42x_Normal, TMP42x_Extended} TMP42x_Range;
typedef enum TMP42x_Shutdown             {TMP42x_Run, TMP42x_ShutDown} TMP42x_Shutdown;
typedef enum TMP42x_ConversionRate {TMP42x_0_0625, TMP42x_0_125, TMP42x_0_25, TMP42x_0_5, TMP42x_1, TMP42x_2, TMP42x_4, TMP42x_8} TMP42x_ConversionRate;

typedef struct tmp42x{
    
    I2C_HandleTypeDef*  hi2c;                                       
    uint8_t                         I2C_ADDR;                               
    
    TMP42x_Type                      type;                                   
    TMP42x_Shutdown              shutdown;                           
    TMP42x_Range                    range;                             
    TMP42x_ConversionRate  conversion_rate;         
    float                                   n_eff1;                               
    float                                   n_eff2;                               
    float                                   n_eff3;                               
    
    union _reg16 {
        uint8_t raw_data[2];
        
        struct _temp_register{
            int16_t OPEN:1, PVLD:1, RESERVED:2, TEMP:12;
        } temp_register;
 
    } reg16;
    
    union _reg8 {
        uint8_t raw_data;
        
        struct _status_register{
            uint8_t RESERVED:7, BUSY:1;
        } status_register;
        
        struct _temp_int_register{
            int8_t TEMP;
        } temp_int_register;
        
        struct _temp_frac_register{
            uint8_t OPEN:1, PVLD:1, RESERVED:2, TEMP:4;
        } temp_frac_register;
        
        struct _config1_register{
            uint8_t RESERVED1:2, TEMP_RANGE:1, RESERVED2:3, SD:1, RESERVED3:1;
        } config1_register;
        
        struct _config2_register{
            uint8_t RESERVED1:2, RC:1, LEN:1, REN:1, REN2:1, REN3:1, RESERVED2:1;
        } _config2_register;
        
        struct _conversion_rate_register{
            uint8_t RESERVED:5, RATE:3;
        } conversion_rate_register;
        
        struct _n_correction_register{
            int8_t N;
        } n_correction_register;
            
        struct _man_id_register{
            uint8_t MANUFACTURE_ID;
        } man_id_register;
        
        struct _dev_id_register{
            uint8_t DEVID;
        } dev_id_register;
        
    } reg8;
 
} TMP42x;
 
// Privates ----------------------------------
TMP42x_Status __TMP42x_readByte(TMP42x* self, uint8_t MemAddress);
TMP42x_Status __TMP42x_readTwoBytes(TMP42x* self, uint8_t MemAddress);
TMP42x_Status __TMP42x_writeByte(TMP42x* self, uint8_t MemAddress);
 
// Public ------------------------------------
TMP42x_Status TMP42x_init(TMP42x* self, TMP42x_Type type, I2C_HandleTypeDef* hi2c, uint8_t I2C_ADDR, TMP42x_Shutdown shutdown, TMP42x_Range range, TMP42x_ConversionRate conversion_rate, float n_eff1, float n_eff2, float n_eff3);
double TMP42x_getLocalTemp(TMP42x* self);
int8_t TMP42x_getLocalTemp_Int(TMP42x* self);
double TMP42x_getRemoteTemp(TMP42x* self, uint8_t channel_number);
int8_t TMP42x_getRemoteTemp_Int(TMP42x* self, uint8_t channel_number);
TMP42x_Status TMP42x_oneShotStart(TMP42x* self);
TMP42x_Status TMP42x_softwareReset(TMP42x* self);
uint8_t TMP42x_getManID(TMP42x* self);
uint8_t TMP42x_getDevID(TMP42x* self);
 
#endif