Diff: OneWire/MAX31850.cpp

Revision:

4:031e71e61e80

Parent:

3:b4277f7c538e

--- a/OneWire/MAX31850.cpp	Mon Jun 02 13:17:18 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,125 +0,0 @@
-/**
-* @file MAX31850.cpp
-* @brief library of MAX31850  1-Wire Thermocouple-to-Digital Converters,Cold-Junction Compensated  (http://www.maximintegrated.com/datasheet/index.mvp/id/7953)
-* @author Frederic BLANC
-* @date 2014_01_15
-*/
-#include "mbed.h"
-#include "onewire.h"
-#include "MAX31850.h"
-#include "crc8.h"
-#include "Horner_ITS90.h"
-int MAX31850_Read_Scratch(uint8_t id[],uint8_t sp[],uint8_t n)
-{
-    if (id[0] == MAX31850_ID) {
-        if (ow_reset(n))                 //reset OW
-            return OW_SHORT_CIRCUIT;
-        sp[0]=MAX31850_READ;   // command
-        ow_command(n,sp[0], &id[0]);
-        for ( int i=0 ; i< MAX31850_SP_SIZE; i++ ) { //read 8xdata + CRC16
-            sp[i]=ow_byte_rd(n);
-        }
-        if(sp[8]!=crc8(sp,8))
-            return OW_ERROR_CRC;
-        return OW_OK;
-    }
-    return OW_ERROR_BAD_ID;
-}
-
-int MAX31850_Temp_TRUE(uint8_t *sp,double *temp)
-{
-
-
-    float temp_cj,temp_tc;
-    double vtc;
-    int err; 
-    
-    err = MAX31850_Temp_TC(sp,&temp_tc);
-    if(err) {
-        return err;
-    }
-    MAX31850_Temp_CJ(sp,&temp_cj);
-
-    vtc = MAX31850_K * temp_tc ;
-    *temp=0;
-    if(temp_tc < 0.0) {
-        for(int i=0;i<10;++i)
-        {
-        
-        *temp+=ITS90_TCK_subzero[i]*pow(vtc,i);
-        }
-    } else if(temp_tc < 500.0) {
-        for(int i=0;i<10;++i)
-        {
-        
-        *temp+=ITS90_TCK_sub500[i]*pow(vtc,i);
-        }
-    } else {
-        for(int i=0;i<10;++i)
-        {
-        
-        *temp+=ITS90_TCK_sub1372[i]*pow(vtc,i);
-        }
-    }
-    return OW_OK;
-}
-
-
-int MAX31850_Temp_TC(uint8_t *sp,float *temp)
-{
-
-    uint8_t *ptr_meas;
-    uint16_t meas;
-
-    if(sp[0]& 1)
-        return MAX31850_ERR_FAULT;
-    if(sp[2]& (1<<1))
-        return MAX31850_ERR_OPEN_CIRCUIT;
-    if(sp[2]& (1<<2))
-        return MAX31850_ERR_SHORT2GND;
-    if(sp[2]& (1<<3))
-        return MAX31850_ERR_SHORT2VDD;
-    ptr_meas=(uint8_t*) &meas;
-    *ptr_meas = sp[0]  ;  // LSB
-    *++ptr_meas = sp[1]; // MSB
-    if ( meas & 0x8000 )  {
-
-        meas ^= 0xffff;  // convert to positive => (twos complement)++
-        meas++;
-        *temp= -1.0 * MAX31850_ADC_TEMP_TC_UNIT * (float)(meas>>2);
-    } else {
-        *temp=  MAX31850_ADC_TEMP_TC_UNIT * (float)(meas>>2);
-    }
-
-    return OW_OK;
-}
-
-int MAX31850_Temp_CJ(uint8_t *sp,float *temp)
-{
-    uint8_t *ptr_meas;
-    uint16_t meas;
-
-    ptr_meas=(uint8_t*) &meas;
-    *ptr_meas = sp[2]  ;  // LSB
-    *++ptr_meas = sp[3]; // MSB
-    if ( meas & 0x8000 )  {
-
-        meas ^= 0xffff;  // convert to positive => (twos complement)++
-        meas++;
-        *temp= -1.0 * MAX31850_ADC_TEMP_CJ_UNIT * (float)(meas>>4);
-    } else {
-        *temp=  MAX31850_ADC_TEMP_CJ_UNIT * (float)(meas>>4);
-    }
-    return OW_OK;
-}
-
-int MAX31850_Start_meas(uint8_t id[],uint8_t n=0)
-{
-    if (id[0] == MAX31850_ID) {
-        if (ow_reset(n))                 //reset OW
-            return OW_SHORT_CIRCUIT;
-        ow_command(n,MAX31850_CONVERT_T, &id[0]);
-        return OW_OK;
-    }
-    return OW_ERROR_BAD_ID;
-}
\ No newline at end of file