ir_Xmp.cpp File Reference

Support for XMP protocols. More...

Namespaces
namespace	IRXmpUtils

Functions
uint8_t	IRXmpUtils::getSectionChecksum (const uint32_t data, const uint16_t nbits)
	Get the current checksum value from an XMP data section.
uint8_t	IRXmpUtils::calcSectionChecksum (const uint32_t data, const uint16_t nbits)
	Calculate the correct checksum value for an XMP data section.
uint64_t	IRXmpUtils::updateChecksums (const uint64_t data, const uint16_t nbits)
	Recalculate a XMP message code ensuring it has the checksums valid.
uint16_t	IRXmpUtils::calcRepeatOffset (const uint16_t nbits)
	Calculate the bit offset the repeat nibble in an XMP code.
bool	IRXmpUtils::isRepeat (const uint64_t data, const uint16_t nbits)
	Test if an XMP message code is a repeat or not.
uint64_t	IRXmpUtils::adjustRepeat (const uint64_t data, const uint16_t nbits, const uint8_t repeat_code)
	Adjust an XMP message code to make it a valid repeat or non-repeat code.

Variables
const uint16_t	kXmpMark = 210
	uSeconds.
const uint16_t	kXmpBaseSpace = 760
	uSeconds
const uint16_t	kXmpSpaceStep = 135
	uSeconds
const uint16_t	kXmpFooterSpace = 13000
	uSeconds.
const uint32_t	kXmpMessageGap = 80400
	uSeconds.
const uint8_t	kXmpWordSize = kNibbleSize
	nr. of Bits in a word.
const uint8_t	kXmpMaxWordValue = (1 << kXmpWordSize) - 1
const uint8_t	kXmpSections = 2
	Nr. of Data sections.
const uint8_t	kXmpRepeatCode = 0b1000
const uint8_t	kXmpRepeatCodeAlt = 0b1001

Detailed Description

Support for XMP protocols.

See also

https://github.com/crankyoldgit/IRremoteESP8266/issues/1414

http://www.hifi-remote.com/wiki/index.php/XMP

Variable Documentation

kXmpBaseSpace

const uint16_t kXmpBaseSpace = 760

uSeconds

kXmpFooterSpace

const uint16_t kXmpFooterSpace = 13000

uSeconds.

kXmpMark

const uint16_t kXmpMark = 210

uSeconds.

kXmpMaxWordValue

const uint8_t kXmpMaxWordValue = (1 << kXmpWordSize) - 1

kXmpMessageGap

const uint32_t kXmpMessageGap = 80400

uSeconds.

kXmpRepeatCode

const uint8_t kXmpRepeatCode = 0b1000

kXmpRepeatCodeAlt

const uint8_t kXmpRepeatCodeAlt = 0b1001

kXmpSections

const uint8_t kXmpSections = 2

Nr. of Data sections.

kXmpSpaceStep

const uint16_t kXmpSpaceStep = 135

uSeconds

kXmpWordSize

const uint8_t kXmpWordSize = kNibbleSize

nr. of Bits in a word.