mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
35 lines
781 B
Plaintext
35 lines
781 B
Plaintext
|
|
Working is as follows:
|
|
|
|
first is to instantiate a constructor:
|
|
|
|
#include "MAX31855.h"
|
|
|
|
const int doPin = 7;
|
|
const int csPin = 6;
|
|
const int clPin = 5;
|
|
|
|
MAX31855 tc(clPin, csPin, doPin);
|
|
|
|
|
|
To get a reading one must call tc.read()
|
|
|
|
This is the workhorse, it returns the status of the last read which is 0..7
|
|
0 = OK
|
|
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.
|
|
Now one can do:
|
|
|
|
float last = tc.getTemperature();
|
|
tc.read();
|
|
float new = tc.getTemperature();
|
|
float delta = new - last;
|
|
|