m5::unit::ir::RawCodec Class Reference

Raw mark/space pass-through codec. More...

#include <raw_codec.hpp>

Inheritance diagram for m5::unit::ir::RawCodec:

Public Member Functions
	RawCodec (uint32_t carrier_hz=38000)
	Constructor.
item_container_type	encode (uint16_t, uint16_t, bool) override
	encode() is not meaningful for Raw; returns empty
bool	decode (const gpio::m5_rmt_item_t *items, uint32_t num, DecodeResult &result) override
	decode() stores raw item count in bits and tags protocol as Raw
uint32_t	carrierFrequencyHz () const override
	Carrier frequency configured at construction.
item_container_type	encodeRaw (const uint16_t *mark_space_us, uint32_t count)
	Encode raw mark/space pairs into RMT items.
Public Member Functions inherited from m5::unit::ir::IRCodec
	IRCodec (CodecType t)
CodecType	type () const
	Get codec type for safe downcasting.
virtual float	carrierDuty () const
	Carrier duty cycle (0.0 - 1.0)
virtual uint8_t	minFrames () const
	Number of frames that should be transmitted per keypress for this protocol.
virtual uint16_t	frameGapUs () const
	Inter-frame gap (microseconds) when transmitting multiple frames in one burst.
virtual bool	decode (const m5::unit::gpio::m5_rmt_item_t *items, uint32_t num, DecodeResult &result)=0
	Try to decode RMT items into an IR command.

Detailed Description

Raw mark/space pass-through codec.

Encodes/decodes raw mark/space timing pairs without protocol interpretation. Use for unknown protocols or direct RMT item manipulation.

Constructor & Destructor Documentation

RawCodec()

m5::unit::ir::RawCodec::RawCodec ( uint32_t carrier_hz = 38000 )

inlineexplicit

Constructor.

Parameters

carrier_hz

Carrier frequency in Hz for transmission (default 38 kHz)

Member Function Documentation

carrierFrequencyHz()

uint32_t m5::unit::ir::RawCodec::carrierFrequencyHz ( ) const

inlineoverridevirtual

Carrier frequency configured at construction.

Returns

Frequency in Hz

Implements m5::unit::ir::IRCodec.

decode()

bool m5::unit::ir::RawCodec::decode ( const gpio::m5_rmt_item_t * items, uint32_t num, DecodeResult & result )

inlineoverride

decode() stores raw item count in bits and tags protocol as Raw

Parameters

	items	RMT items from receiver
	num	Number of items
[out]	result	Populated with CodecType::Raw and bits = min(num, 255) on success

Returns

True when items is non-null and num > 0; false otherwise

encode()

item_container_type m5::unit::ir::RawCodec::encode ( uint16_t , uint16_t , bool  )

inlineoverridevirtual

encode() is not meaningful for Raw; returns empty

Implements m5::unit::ir::IRCodec.

encodeRaw()

item_container_type m5::unit::ir::RawCodec::encodeRaw ( const uint16_t * mark_space_us, uint32_t count )

inline

Encode raw mark/space pairs into RMT items.

Parameters

mark_space_us	Array of alternating mark/space durations (microseconds)
count	Number of entries. Pairs (count/2) become full (mark, space) items; an odd trailing entry is emitted as a terminator (mark, 0).

Returns

Packed RMT items