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0.1.05 2015-07-12 refactor robust constructor

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rob tillaart 2015-12-06 16:40:51 +01:00
parent 1f3495a4b2
commit 7993100516
3 changed files with 17 additions and 11 deletions
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6
libraries/MAX31855/MAX31855.cpp
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@ -1,12 +1,13 @@
//
// FILE: MAX31855.cpp
// AUTHOR: Rob Tillaart
// VERSION: 0.1.04
// VERSION: 0.1.05
// PURPOSE: MAX31855 - Thermocouple
// DATE: 2014-01-01
// URL:
//
// HISTORY:
// 0.1.05 2015-07-12 refactor robust constructor
// 0.1.04 2015-03-09 replaced float -> double (ARM support)
// 0.1.03 fixed negative temperature
// 0.1.02 added offset
@ -24,6 +25,9 @@ MAX31855::MAX31855(uint8_t sclk, uint8_t cs, uint8_t miso)
_cs = cs;
_miso = miso;
_offset = 0;
_status = STATUS_NOREAD;
_temperature = -999;
_internal = -999;
}
void MAX31855::begin()

19
libraries/MAX31855/MAX31855.h
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@ -1,7 +1,7 @@
//
// FILE: MAX31855.h
// AUTHOR: Rob Tillaart
// VERSION: 0.1.04
// VERSION: 0.1.05
// PURPOSE: MAX31855 - Thermocouple
// DATE: 2014-01-01
// URL:
@ -17,12 +17,14 @@
#include "Arduino.h"
#endif
#define MAX31855_VERSION "0.1.04"
#define MAX31855_VERSION "0.1.05"
#define STATUS_OK 0x00
#define STATUS_OPEN_CIRCUIT 0x01
#define STATUS_SHORT_TO_GND 0x02
#define STATUS_SHORT_TO_VCC 0x04
#define STATUS_NOREAD 0x80
class MAX31855
{
@ -32,15 +34,16 @@ public:
uint8_t read();
double getInternal(void) { return _internal; };
double getTemperature(void) { return _temperature; };
uint8_t getStatus(void) { return _status; };
double getInternal(void) const { return _internal; };
double getTemperature(void) const { return _temperature; };
void setOffset(double t) { _offset = t; };
double getOffset() { return _offset; };
uint8_t getStatus(void) const { return _status; };
void setOffset(const double t) { _offset = t; };
double getOffset() const { return _offset; };
private:
uint32_t _read();
uint32_t _read();
double _internal;
double _temperature;
uint8_t _status;

3
libraries/MAX31855/readme.txt
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@ -20,11 +20,10 @@ bit 0 set = thermocouple open circuit
bit 1 set = thermocouple short to GND
bit 2 set = thermocouple short to VCC
After a tc.read() you can do tc.getTemperature() and tc.getInternal().
repeated getTemperature() will give the same value until a new tc.read();
The reason for this is that it allows the object holds its last known temperature.
The reason for this is that it allows the object to hold its last known temperature.
Now one can do:
float last = tc.getTemperature();