MAX31850.h

00001 /* DS2450 specific values (see datasheet http://www.maximintegrated.com/datasheet/index.mvp/id/7953) */
00002 #ifndef __MAX31850_H__
00003 #define __MAX31850_H__
00004 #define MAX31850_ID 0x3B
00005 #define MAX31850_SP_SIZE 9
00006 
00007 #define MAX31850_CONVERT_T    0x44   //  0x44
00008 #define MAX31850_READ_POWER_SUPPLY    0xB4
00009 #define MAX31850_READ           0xBE
00010 
00011 #define MAX31850_ADC_TEMP_TC_UNIT   0.25
00012 #define MAX31850_ADC_TEMP_CJ_UNIT   0.0625
00013 #define MAX31850_K               41.276//41.276µV/C
00014 
00015 #define MAX31850_ERR_FAULT -10;
00016 #define MAX31850_ERR_SHORT2VDD -12;
00017 #define MAX31850_ERR_SHORT2GND -13;
00018 #define MAX31850_ERR_OPEN_CIRCUIT -14;
00019 /**
00020  *    @brief  lecture  registre MAX31850
00021  *    @param  [in] uint8_t id[] tableau d'identifiant OW
00022  *    @param  [out] uint8_t  sp[] tableau de registre
00023  *    @param  [in] uint8_t n bus ow
00024  *    @return OW_OK si erreur retourne OW_ERROR_CRC
00025  *    @date 02/12/2013
00026  *
00027  */
00028 int MAX31850_Read_Scratch(uint8_t id[],uint8_t sp[],uint8_t n) ;
00029 
00030 /**
00031  *    @brief  lecture  temperature thermocouple Linearized MAX31850
00032  *    @param  [in] uint8_t sp[] tableau registre MAX31850
00033  *    @param  [out] float temperature thermocouple Linearized degre Celsuis
00034  *    @return OW_OK si erreur retourne ERROR
00035  *    @date 04/12/2013
00036  *
00037  */
00038  int MAX31850_Temp_TRUE(uint8_t *sp,double *temp);
00039  
00040 /**
00041  *    @brief  lecture  temperature thermocouple MAX31850
00042  *    @param  [in] uint8_t sp[] tableau registre MAX31850
00043  *    @param  [out] float temperature thermocouple degre Celsuis
00044  *    @return OW_OK si erreur retourne ERROR
00045  *    @date 04/12/2013
00046  *
00047  */
00048  int MAX31850_Temp_TC(uint8_t *sp,float *temp) ;
00049  
00050 /**
00051  *    @brief  lecture  temperature cold junction MAX31850
00052  *    @param  [in] uint8_t sp[] tableau registre MAX31850
00053  *    @param  [out] float temperature cold junction degre Celsuis
00054  *    @return OW_OK si erreur retourne ERROR
00055  *    @date 04/12/2013
00056  *
00057  */
00058 int MAX31850_Temp_CJ(uint8_t *sp,float *temp) ;
00059 
00060 /**
00061  *    @brief  start convertion MAX31850
00062  *    @param  [in] uint8_t id[] tableau d'identifiant OW
00063  *    @param  [in] uint8_t n bus ow
00064  *    @return OW_OK 
00065  *    @date 02/12/2013
00066  *
00067  */
00068 int MAX31850_Start_meas(uint8_t id[],uint8_t n);
00069 #endif