Henry Herman / MAX31855

Fork the MAX31855 library. Allows a fxn to be called to select and unselect the TC. Now using a shift register array we can multiplex a great number of these TC chips!

Dependents:   elixys

Fork of MAX31855 by Joe Staton

max31855.h@2:b978f1503c27, 2013-10-30 (annotated)

Committer:
henryeherman
Date:
Wed Oct 30 07:05:34 2013 +0000
Revision:
2:b978f1503c27
Parent:
1:5eeee89cb281 
Fork the MAX31855 library and allow functions to be called before reading the TC values, instead of a digital pin. Allows a shift register to be used to select the TC and a VERY large number of TC can be multiplexed!

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Stavlin 0:656c522152d4 1 #ifndef MAX31855_h
Stavlin 0:656c522152d4 2 #define MAX31855_h
Stavlin 0:656c522152d4 3
Stavlin 0:656c522152d4 4 #include "mbed.h"
Stavlin 0:656c522152d4 5
Stavlin 0:656c522152d4 6 class max31855
Stavlin 0:656c522152d4 7 {
Stavlin 0:656c522152d4 8 SPI& spi;
henryeherman 2:b978f1503c27 9 void(*selectfxn)(void);
henryeherman 2:b978f1503c27 10 void(*unselectfxn)(void);
henryeherman 2:b978f1503c27 11 //DigitalOut ncs;
Stavlin 0:656c522152d4 12 Timer pollTimer;
Stavlin 0:656c522152d4 13 public:
Stavlin 0:656c522152d4 14
henryeherman 2:b978f1503c27 15 max31855(SPI& _spi, void(*sel)(void), void(*usel)(void));
Stavlin 0:656c522152d4 16 void select();
Stavlin 0:656c522152d4 17 void deselect();
Stavlin 1:5eeee89cb281 18 void initialise(int setType=0);
henryeherman 2:b978f1503c27 19
Stavlin 1:5eeee89cb281 20 int faultCode;
Stavlin 0:656c522152d4 21
Stavlin 0:656c522152d4 22 float chipTemp;
Stavlin 0:656c522152d4 23 float read_temp();
Stavlin 0:656c522152d4 24 private:
Stavlin 0:656c522152d4 25 PinName _CS_pin;
Stavlin 0:656c522152d4 26 PinName _SO_pin;
Stavlin 0:656c522152d4 27 PinName _SCK_pin;
Stavlin 0:656c522152d4 28 int _units;
Stavlin 0:656c522152d4 29 float _error;
Stavlin 0:656c522152d4 30 };
Stavlin 0:656c522152d4 31
Stavlin 0:656c522152d4 32 #endif