Arduino入門：ビットとバイトの操作

//Arduino Sketch Example: lowByte
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
lowByte(x)

//Parameters
//x: a value of any type

//Returns: byte

//Description
//Extracts the low-order (rightmost) byte of a variable (e.g. a word).

//Arduino Sketch Example: highByte()
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
highByte(x)

//Parameters
//x: a value of any type

//Returns: byte

//Description
//Extracts the high-order (leftmost) byte of a word (or the second lowest byte of a larger data type).

//Arduino Sketch Example: bitRead
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
bitRead(x, n)

//Parameters
//x: the number from which to read
//n: which bit to read, starting at 0 for the least-significant (rightmost) bit

//Returns
//the value of the bit (0 or 1).

//Description
//Reads a bit of a number.

//Arduino Sketch Example: bitWrite
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
bitWrite(x, n, b)

//Parameters
//x: the numeric variable to which to write
//n: which bit of the number to write, starting at 0 for the least-significant (rightmost) bit
//b: the value to write to the bit (0 or 1)

//Description
//Writes a bit of a numeric variable.

//Arduino Sketch Example: bitSet
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
bitSet(x, n)

//Parameters
//x: the numeric variable whose bit to set
//n: which bit to set, starting at 0 for the least-significant (rightmost) bit

//Description
//Sets (writes a 1 to) a bit of a numeric variable.

//Arduino Sketch Example: bitClear
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
bitClear(x, n)

//Parameters
//x: the numeric variable whose bit to clear
//n: which bit to clear, starting at 0 for the least-significant (rightmost) bit

//Description
//Clears (writes a 0 to) a bit of a numeric variable.

//Arduino Sketch Example: bit
//Date: 2015.1.18
//Edited and Modified by: easy labo
//Original Source: Arduino Reference (http://arduino.cc/en/Reference/HomePage)

//Syntax
bit(n)

//Parameters
//n: the bit whose value to compute

//Returns
//the value of the bit

//Description
//Computes the value of the specified bit (bit 0 is 1, bit 1 is 2, bit 2 is 4, etc.).