init!

Adafruit_MAX31855.cpp

@@ -0,0 +1,110 @@
+/*************************************************** 
+  This is a library for the Adafruit Thermocouple Sensor w/MAX31855K
+
+  Designed specifically to work with the Adafruit Thermocouple Sensor
+  ----> https://www.adafruit.com/products/269
+
+  These displays use SPI to communicate, 3 pins are required to  
+  interface
+  Adafruit invests time and resources providing this open source code, 
+  please support Adafruit and open-source hardware by purchasing 
+  products from Adafruit!
+
+  Written by Limor Fried/Ladyada for Adafruit Industries.  
+  BSD license, all text above must be included in any redistribution
+ ****************************************************/
+
+#include "Adafruit_MAX31855.h"
+#include <avr/pgmspace.h>
+#include <util/delay.h>
+#include <stdlib.h>
+
+
+Adafruit_MAX31855::Adafruit_MAX31855(int8_t SCLK, int8_t CS, int8_t MISO) {
+  sclk = SCLK;
+  cs = CS;
+  miso = MISO;
+
+  //define pin modes
+  pinMode(cs, OUTPUT);
+  pinMode(sclk, OUTPUT); 
+  pinMode(miso, INPUT);
+
+  digitalWrite(cs, HIGH);
+}
+
+
+double Adafruit_MAX31855::readInternal(void) {
+  uint32_t v;
+
+  v = spiread32();
+
+  float internal = (v >> 4) & 0x1FF;
+  internal *= 0.0625;
+  if ((v >> 4) & 0x200) 
+    internal *= -1;
+  //Serial.print("Internal Temp: "); Serial.println(internal);
+  return internal;
+}
+
+double Adafruit_MAX31855::readCelsius(void) {
+
+  uint32_t v;
+
+  v = spiread32();
+
+  //Serial.print("0x"); Serial.println(v, HEX);
+
+  float internal = (v >> 4) & 0x1FF;
+  internal *= 0.0625;
+  if ((v >> 4) & 0x200) 
+    internal *= -1;
+  //Serial.print("Internal Temp: "); Serial.println(internal);
+  if (v & 0x7) {
+    // uh oh, a serious problem!
+    return NAN; 
+  }
+
+  v >>= 18;
+  //Serial.println(v, HEX);
+
+  double temp = v & 0x7FF;
+  if (v & 0x800) temp *= -1;
+  temp *= 0.25;
+  return temp;
+}
+
+uint8_t Adafruit_MAX31855::readError() {
+  return spiread32() & 0x7;
+}
+
+double Adafruit_MAX31855::readFarenheit(void) {
+  return readCelsius() * 9.0/5.0 + 32;
+}
+
+uint32_t Adafruit_MAX31855::spiread32(void) { 
+  int i;
+  uint32_t d = 0;
+
+  digitalWrite(sclk, LOW);
+  _delay_ms(1);
+  digitalWrite(cs, LOW);
+  _delay_ms(1);
+
+  for (i=31; i>=0; i--)
+  {
+    digitalWrite(sclk, LOW);
+    _delay_ms(1);
+    d <<= 1;
+    if (digitalRead(miso)) {
+      d |= 1;
+    }
+
+    digitalWrite(sclk, HIGH);
+    _delay_ms(1);
+  }
+
+  digitalWrite(cs, HIGH);
+  //Serial.println(d, HEX);
+  return d;
+}

Adafruit_MAX31855.h

@@ -0,0 +1,36 @@
+/*************************************************** 
+  This is a library for the Adafruit Thermocouple Sensor w/MAX31855K
+
+  Designed specifically to work with the Adafruit Thermocouple Sensor
+  ----> https://www.adafruit.com/products/269
+
+  These displays use SPI to communicate, 3 pins are required to  
+  interface
+  Adafruit invests time and resources providing this open source code, 
+  please support Adafruit and open-source hardware by purchasing 
+  products from Adafruit!
+
+  Written by Limor Fried/Ladyada for Adafruit Industries.  
+  BSD license, all text above must be included in any redistribution
+ ****************************************************/
+
+
+#if (ARDUINO >= 100)
+ #include "Arduino.h"
+#else
+ #include "WProgram.h"
+#endif
+
+class Adafruit_MAX31855 {
+ public:
+  Adafruit_MAX31855(int8_t SCLK, int8_t CS, int8_t MISO);
+
+  double readInternal(void);
+  double readCelsius(void);
+  double readFarenheit(void);
+  uint8_t readError();
+
+ private:
+  int8_t sclk, miso, cs;
+  uint32_t spiread32(void);
+};

keywords.txt

@@ -0,0 +1,21 @@
+#######################################
+# Syntax Coloring Map for NewSoftSerial
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+max6675	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+readCelsius	KEYWORD2
+readFarenheit	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+