Changes between Version 18 and Version 19 of MAX6675

Timestamp:

Jul 26, 2009 10:21:16 PM (15 years ago)

Author:

sgk

Comment:

--

MAX6675

@@ -76 +76 @@
 サンプルでいただいたチップは、商売に使っちゃいけないのがルール。
 上記のプレゼントで使用しているチップは、別途購入した物です。ご安心下さい。
-
-== MAX6675.pde ==
-{{{
-#!c
-#include "SPI.h"
-
-#define VCC  8
-#define GND  9
-#define SLAVE  10
-
-void
-setup()
-{
-#ifdef GND
-  pinMode(GND, OUTPUT);
-  digitalWrite(GND, LOW); 
-#endif
-#ifdef VCC
-  pinMode(VCC, OUTPUT);
-  digitalWrite(VCC, HIGH);
-#endif
-
-  Serial.begin(9600);
-  SPI_Master.begin(SLAVE);
-}
-
-void
-loop()
-{
-  int value;
-
-  delay(500);
-  SPI_Master.enable(SLAVE);
-  value = SPI_Master.read() << 8;
-  value |= SPI_Master.read();
-  SPI_Master.disable();
-  
-  if ((value & 0x0004) != 0)
-    Serial.println("Error");
-  else
-    Serial.println((value >> 3) * 0.25);
-}
-}}}
-
-== SPI.cpp ==
-{{{
-#!c
-#include "SPI.h"
-
-boolean SPI_Master_Class::initialized_ = false;
-int SPI_Master_Class::enabled_ = -1;
-
-void
-SPI_Master_Class::begin(int slaveselecter) {
-  if (!initialized_) {
-    initialized_ = true;
-    enabled_ = -1;
-    pinMode(SS, OUTPUT);  // Must be set as OUTPUT before SPE is asserted.
-    pinMode(MOSI, OUTPUT);
-    pinMode(MISO, INPUT);
-    digitalWrite(MISO, HIGH);  // Pull-up
-    pinMode(SCK, OUTPUT);
-    SPCR = (1<<SPE)|(1<<MSTR);  // SPE: SPI Enable; MSTR: Master
-    byte garbage;
-    garbage = SPSR;
-    garbage = SPDR;
-  }
-
-  if (slaveselecter != SS)
-    pinMode(slaveselecter, OUTPUT);
-  digitalWrite(slaveselecter, HIGH);  // Disable
-}
-
-void
-SPI_Master_Class::enable(int slaveselecter) {
-  disable();
-  digitalWrite(slaveselecter, LOW);
-  enabled_ = slaveselecter;
-}
-
-void
-SPI_Master_Class::disable() {
-  if (enabled_ >= 0) {
-    digitalWrite(enabled_, HIGH);
-    enabled_ = -1;
-  }
-}
-
-byte
-SPI_Master_Class::write_and_read(byte data) const {
-  SPDR = data;
-  while (!(SPSR & (1<<SPIF)))
-    ;
-  return SPDR;
-}
-
-void
-SPI_Master_Class::write(byte data) const {
-  write_and_read(data);
-}
-
-byte
-SPI_Master_Class::read() const {
-  return write_and_read(0x00);
-}
-
-SPI_Master_Class SPI_Master;
-}}}
-
-== SPI.h ==
-{{{
-#!c
-#ifndef __SPI_H__
-#define __SPI_H__
-
-#include "WProgram.h"
-
-class SPI_Master_Class {
-public:
-  static void begin(int slaveselecter);
-  void enable(int slaveselecter);
-  void disable();
-  byte write_and_read(byte data) const;
-  void write(byte data) const;
-  byte read() const;
-
-private:
-  static boolean initialized_;
-  static const int SS = 10;
-  static const int MOSI = 11;
-  static const int MISO = 12;
-  static const int SCK = 13;
-  static int enabled_;
-};
-
-extern SPI_Master_Class SPI_Master;
-
-#endif //__SPI_H__
-}}}