Bit Fields
Bit Fields
Bit Fields are unsigned int members of structures that occupy a specified number of adjacent bits from one to sizeof(int). They may be used as an ordinary int variable in arithmetic and logical operations.

Bit Fields are ordinary members of a structure and have a specific bit width. They are often used in conjunction with unions to provide bit access to a variable without masking operations.

Creating a Bit Field

Syntax

struct structName
{
unsigned int memberName1: bitWidth;

unsigned int memberNamen:bitWidth
}

Example

bitfield struct may be declared normally or as a typedef

Using a Bit Field

Example

BitFields.png

20th Annual
Microchip MASTERs Conference 2016
Register now - Deadline: July 29

JW Marriott Desert Ridge Resort-Phoenix, AZ

© 2016 Microchip Technology, Inc.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.