79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
/*
|
|
* DS2438.h
|
|
*
|
|
* by Joe Bechter
|
|
*
|
|
* (C) 2012, bechter.com
|
|
*
|
|
* All files, software, schematics and designs are provided as-is with no warranty.
|
|
* All files, software, schematics and designs are for experimental/hobby use.
|
|
* Under no circumstances should any part be used for critical systems where safety,
|
|
* life or property depends upon it. You are responsible for all use.
|
|
* You are free to use, modify, derive or otherwise extend for your own non-commercial purposes provided
|
|
* 1. No part of this software or design may be used to cause injury or death to humans or animals.
|
|
* 2. Use is non-commercial.
|
|
* 3. Credit is given to the author (i.e. portions © bechter.com), and provide a link to the original source.
|
|
*
|
|
*/
|
|
|
|
#ifndef DS2438_h
|
|
#define DS2438_h
|
|
|
|
#include <Arduino.h>
|
|
#include <OneWire.h>
|
|
|
|
#define DS2438_TEMPERATURE_CONVERSION_COMMAND 0x44
|
|
#define DS2438_VOLTAGE_CONVERSION_COMMAND 0xb4
|
|
#define DS2438_WRITE_SCRATCHPAD_COMMAND 0x4e
|
|
#define DS2438_COPY_SCRATCHPAD_COMMAND 0x48
|
|
#define DS2438_READ_SCRATCHPAD_COMMAND 0xbe
|
|
#define DS2438_RECALL_MEMORY_COMMAND 0xb8
|
|
|
|
#define PAGE_MIN 0
|
|
#define PAGE_MAX 7
|
|
|
|
#define DS2438_CHA 0
|
|
#define DS2438_CHB 1
|
|
|
|
#define DS2438_MODE_CHA 0x01
|
|
#define DS2438_MODE_CHB 0x02
|
|
#define DS2438_MODE_TEMPERATURE 0x04
|
|
|
|
#define DS2438_TEMPERATURE_DELAY 10
|
|
#define DS2438_VOLTAGE_CONVERSION_DELAY 8
|
|
|
|
typedef uint8_t DeviceAddress[8];
|
|
|
|
class DS2438 {
|
|
public:
|
|
DS2438(OneWire *ow, float currentShunt);
|
|
DS2438(OneWire *ow, uint8_t *address);
|
|
|
|
void begin();
|
|
void update();
|
|
double getTemperature();
|
|
float getVoltage(int channel=DS2438_CHA);
|
|
float getCurrent();
|
|
boolean isError();
|
|
boolean isFound();
|
|
private:
|
|
bool validAddress(const uint8_t*);
|
|
bool validFamily(const uint8_t* deviceAddress);
|
|
|
|
bool deviceFound = false;
|
|
OneWire *_ow;
|
|
DeviceAddress _address;
|
|
uint8_t _mode;
|
|
double _temperature;
|
|
float _voltageA;
|
|
float _voltageB;
|
|
float _current;
|
|
float _currentShunt;
|
|
boolean _error;
|
|
boolean startConversion(int channel, boolean doTemperature);
|
|
boolean selectChannel(int channel);
|
|
void writePage(int page, uint8_t *data);
|
|
boolean readPage(int page, uint8_t *data);
|
|
};
|
|
|
|
#endif |