/*

* TinyIRReceiver.hpp

*

* Receives IR data of NEC protocol using pin change interrupts.

* NEC is the protocol of most cheap remote controls for Arduino.

*

* Parity check is done for address and data.

* On a completely received IR command, the user function handleReceivedIRData(uint8_t aAddress, uint8_t aCommand, uint8_t aFlags)

* is called in interrupt context but with interrupts being enabled to enable use of delay() etc.

* !!!!!!!!!!!!!!!!!!!!!!

* Functions called in interrupt context should be running as short as possible,

* so if you require longer action, save the data (address + command) and handle them in the main loop.

* !!!!!!!!!!!!!!!!!!!!!

* aFlags can contain one of IRDATA_FLAGS_EMPTY, IRDATA_FLAGS_IS_REPEAT and IRDATA_FLAGS_PARITY_FAILED bits

*

* The FAST protocol is a proprietary modified JVC protocol without address, with parity and with a shorter header.

* FAST Protocol characteristics:

* - Bit timing is like NEC or JVC

* - The header is shorter, 3156 vs. 12500

* - No address and 16 bit data, interpreted as 8 bit command and 8 bit inverted command,

* leading to a fixed protocol length of (6 + (16 * 3) + 1) * 526 = 55 * 526 = 28930 microseconds or 29 ms.

* - Repeats are sent as complete frames but in a 50 ms period / with a 21 ms distance.

*

*

* This file is part of IRMP https://github.com/IRMP-org/IRMP.

* This file is part of Arduino-IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.

*

************************************************************************************

* MIT License

*

* Copyright (c) 2022-2025 Armin Joachimsmeyer

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to deal

* in the Software without restriction, including without limitation the rights

* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the Software is furnished

* to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in all

* copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,

* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE

* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

*

************************************************************************************

*/

/*

* This library can be configured at compile time by the following options / macros:

* For more details see: https://github.com/Arduino-IRremote/Arduino-IRremote#compile-options--macros-for-this-library (scroll down)

*

* - IR_RECEIVE_PIN The pin number for TinyIRReceiver IR input.

* - IR_FEEDBACK_LED_PIN The pin number for TinyIRReceiver feedback LED.

* - NO_LED_FEEDBACK_CODE Disables the feedback LED function for send and receive. Saves 14 bytes program memory.

* - NO_LED_RECEIVE_FEEDBACK_CODE Disables the LED feedback code for receive.

* - NO_LED_SEND_FEEDBACK_CODE Disables the LED feedback code for send.

* - DISABLE_PARITY_CHECKS Disable parity checks. Saves 48 bytes of program memory.

* - USE_EXTENDED_NEC_PROTOCOL Like NEC, but take the 16 bit address as one 16 bit value and not as 8 bit normal and 8 bit inverted value.

* - USE_ONKYO_PROTOCOL Like NEC, but take the 16 bit address and command each as one 16 bit value and not as 8 bit normal and 8 bit inverted value.

* - USE_FAST_PROTOCOL Use FAST protocol (no address and 16 bit data, interpreted as 8 bit command and 8 bit inverted command) instead of NEC.

* - ENABLE_NEC2_REPEATS Instead of sending / receiving the NEC special repeat code, send / receive the original frame for repeat.

* - USE_CALLBACK_FOR_TINY_RECEIVER Call the user provided function "void handleReceivedTinyIRData()" each time a frame or repeat is received.

*/

#ifndef _TINY_IR_RECEIVER_HPP

#define _TINY_IR_RECEIVER_HPP

#include <Arduino.h>

/*

* Protocol selection

*/

//#define DISABLE_PARITY_CHECKS // Disable parity checks. Saves 48 bytes of program memory.

//#define USE_EXTENDED_NEC_PROTOCOL // Like NEC, but take the 16 bit address as one 16 bit value and not as 8 bit normal and 8 bit inverted value.

//#define USE_ONKYO_PROTOCOL // Like NEC, but take the 16 bit address and command each as one 16 bit value and not as 8 bit normal and 8 bit inverted value.

//#define USE_FAST_PROTOCOL // Use FAST protocol instead of NEC / ONKYO.

//#define ENABLE_NEC2_REPEATS // Instead of sending / receiving the NEC special repeat code, send / receive the original frame for repeat.

//#define IR_RECEIVE_PIN 2

//#define NO_LED_RECEIVE_FEEDBACK_CODE // Disables the LED feedback code for receive.

//#define IR_FEEDBACK_LED_PIN 12 // Use this, to disable use of LED_BUILTIN definition for IR_FEEDBACK_LED_PIN

#include "TinyIR.h"

#include "digitalWriteFast.h"

/** \addtogroup TinyReceiver Minimal receiver for NEC and FAST protocol

* @{

*/

#if defined(DEBUG)

#define LOCAL_DEBUG

#define LOCAL_DEBUG_ATTACH_INTERRUPT

#else

//#define LOCAL_DEBUG // This enables debug output only for this file

//#define LOCAL_DEBUG_ATTACH_INTERRUPT // To see if attachInterrupt() or static interrupt (by register tweaking) is used and no other debug output

#endif

#if defined(TRACE)

#define LOCAL_TRACE_STATE_MACHINE

#else

//#define LOCAL_TRACE_STATE_MACHINE // to see the state of the ISR (Interrupt Service Routine) state machine

#endif

//#define _IR_MEASURE_TIMING // Activate this if you want to enable internal hardware timing measurement.

//#define _IR_TIMING_TEST_PIN 7

TinyIRReceiverStruct TinyIRReceiverControl;

volatile TinyIRReceiverCallbackDataStruct TinyIRReceiverData;

/*

* Set input pin and output pin definitions etc.

*/

#if defined(IR_INPUT_PIN)

#warning "IR_INPUT_PIN is deprecated, use IR_RECEIVE_PIN"

#define IR_RECEIVE_PIN IR_INPUT_PIN

#endif

#if !defined(IR_RECEIVE_PIN)

# if defined(__AVR_ATtiny1616__) || defined(__AVR_ATtiny3216__) || defined(__AVR_ATtiny3217__)

#warning "IR_RECEIVE_PIN is not defined, so it is set to 10"

#define IR_RECEIVE_PIN 10

# elif defined(__AVR_ATtiny816__)

#warning "IR_RECEIVE_PIN is not defined, so it is set to 14"

#define IR_RECEIVE_PIN 14

# else

#warning "IR_RECEIVE_PIN is not defined, so it is set to 2"

#define IR_RECEIVE_PIN 2

# endif

#endif

#if !( \

(defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)) /* ATtinyX5 */ \

|| defined(__AVR_ATtiny88__) /* MH-ET LIVE Tiny88 */ \

|| defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__) \

|| defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) \

|| defined(__AVR_ATmega8__) || defined(__AVR_ATmega48__) || defined(__AVR_ATmega48P__) || defined(__AVR_ATmega48PB__) || defined(__AVR_ATmega88P__) || defined(__AVR_ATmega88PB__) \

|| defined(__AVR_ATmega168__) || defined(__AVR_ATmega168PA__) || defined(__AVR_ATmega168PB__) || defined(__AVR_ATmega328__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328PB__) \

/* ATmegas with ports 0,1,2 above and ATtiny167 only 2 pins below */ \

|| ( (defined(__AVR_ATtiny87__) || defined(__AVR_ATtiny167__)) && ( (defined(ARDUINO_AVR_DIGISPARKPRO) && ((IR_RECEIVE_PIN == 3) || (IR_RECEIVE_PIN == 9))) /*ATtinyX7(digisparkpro) and pin 3 or 9 */\

|| (! defined(ARDUINO_AVR_DIGISPARKPRO) && ((IR_RECEIVE_PIN == 3) || (IR_RECEIVE_PIN == 14)))) ) /*ATtinyX7(ATTinyCore) and pin 3 or 14 */ \

)

#define TINY_RECEIVER_USE_ARDUINO_ATTACH_INTERRUPT // Cannot use any static ISR vector here. In other cases we have code provided for generating interrupt on pin change.

#endif

/**

* Declaration of the callback function provided by the user application.

* It is called every time a complete IR command or repeat was received.

*/

extern void handleReceivedTinyIRData();

uint32_t sMicrosOfGap; // The length of the gap before the start bit, used for trace

/**

* The ISR (Interrupt Service Routine) of TinyIRRreceiver.

* It handles the NEC protocol decoding and calls the user callback function on complete.

* 5 us + 3 us for push + pop for a 16MHz ATmega

*/

#if defined(ESP8266) || defined(ESP32)

IRAM_ATTR

#endif

void IRPinChangeInterruptHandler(void) {

#if defined(_IR_MEASURE_TIMING) && defined(_IR_TIMING_TEST_PIN)

digitalWriteFast(_IR_TIMING_TEST_PIN, HIGH); // 2 clock cycles

#endif

/*

* Save IR input level

* Negative logic, true / HIGH means inactive / IR space, LOW / false means IR mark.

*/

uint_fast8_t tIRLevel = digitalReadFast(IR_RECEIVE_PIN);

#if !defined(NO_LED_RECEIVE_FEEDBACK_CODE) && defined(IR_FEEDBACK_LED_PIN)

# if defined(FEEDBACK_LED_IS_ACTIVE_LOW)

digitalWriteFast(IR_FEEDBACK_LED_PIN, tIRLevel);

# else

digitalWriteFast(IR_FEEDBACK_LED_PIN, !tIRLevel);

# endif

#endif

/*

* 1. compute microseconds after last change

*/

// Repeats can be sent after a pause, which is longer than 64000 microseconds, so we need a 32 bit value for check of repeats

uint32_t tCurrentMicros = micros();

uint32_t tMicrosOfMarkOrSpace32 = tCurrentMicros - TinyIRReceiverControl.LastChangeMicros;

uint16_t tMicrosOfMarkOrSpace = tMicrosOfMarkOrSpace32;

TinyIRReceiverControl.LastChangeMicros = tCurrentMicros;

uint8_t tState = TinyIRReceiverControl.IRReceiverState;

#if defined(LOCAL_TRACE_STATE_MACHINE)

Serial.print(tState);

Serial.print(F(" D="));

Serial.print(tMicrosOfMarkOrSpace);

// Serial.print(F(" I="));

// Serial.print(tIRLevel);

Serial.print('|');

#endif

if (tIRLevel == LOW) {

/*

* We have a mark here

*/

if (tMicrosOfMarkOrSpace > 2 * TINY_RECEIVER_HEADER_MARK) {

// timeout -> must reset state machine

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

if (tState == IR_RECEIVER_STATE_WAITING_FOR_START_MARK) {

// We are at the beginning of the header mark, check timing at the next transition

tState = IR_RECEIVER_STATE_WAITING_FOR_START_SPACE;

TinyIRReceiverControl.Flags = IRDATA_FLAGS_EMPTY; // If we do it here, it saves 4 bytes

#if defined(TRACE) // Do not use LOCAL_TRACE here since sMicrosOfGap is read in a cpp file at TRACE

sMicrosOfGap = tMicrosOfMarkOrSpace32;

#endif

#if defined(ENABLE_NEC2_REPEATS)

// Check for repeat, where full frame is sent again after TINY_RECEIVER_REPEAT_PERIOD ms

// Not required for NEC, where repeats are detected by a special header space duration

// Must use 32 bit arithmetic here!

if (tMicrosOfMarkOrSpace32 < TINY_RECEIVER_MAXIMUM_REPEAT_DISTANCE) {

TinyIRReceiverControl.Flags = IRDATA_FLAGS_IS_REPEAT;

}

#endif

}

else if (tState == IR_RECEIVER_STATE_WAITING_FOR_FIRST_DATA_MARK) {

if (tMicrosOfMarkOrSpace >= lowerValue25Percent(TINY_RECEIVER_HEADER_SPACE)

&& tMicrosOfMarkOrSpace <= upperValue25Percent(TINY_RECEIVER_HEADER_SPACE)) {

/*

* We had a valid data header space here -> initialize data

*/

TinyIRReceiverControl.IRRawDataBitCounter = 0;

#if (TINY_RECEIVER_BITS > 16)

TinyIRReceiverControl.IRRawData.ULong = 0;

#else

TinyIRReceiverControl.IRRawData.UWord = 0;

#endif

TinyIRReceiverControl.IRRawDataMask = 1;

tState = IR_RECEIVER_STATE_WAITING_FOR_DATA_SPACE;

#if !defined(ENABLE_NEC2_REPEATS)

// Check for NEC repeat header

} else if (tMicrosOfMarkOrSpace >= lowerValue25Percent(NEC_REPEAT_HEADER_SPACE)

&& tMicrosOfMarkOrSpace <= upperValue25Percent(NEC_REPEAT_HEADER_SPACE)

&& TinyIRReceiverControl.IRRawDataBitCounter >= TINY_RECEIVER_BITS) {

/*

* We have a repeat header here and no broken receive before -> set repeat flag

*/

TinyIRReceiverControl.Flags = IRDATA_FLAGS_IS_REPEAT;

tState = IR_RECEIVER_STATE_WAITING_FOR_DATA_SPACE;

#endif

} else {

// This parts are optimized by the compiler into jumps to one code :-)

// Wrong length -> reset state

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

}

else if (tState == IR_RECEIVER_STATE_WAITING_FOR_DATA_MARK) {

// Check data space length

if (tMicrosOfMarkOrSpace >= lowerValue50Percent(TINY_RECEIVER_ZERO_SPACE)

&& tMicrosOfMarkOrSpace <= upperValue50Percent(TINY_RECEIVER_ONE_SPACE)) {

// We have a valid bit here

tState = IR_RECEIVER_STATE_WAITING_FOR_DATA_SPACE;

if (tMicrosOfMarkOrSpace >= 2 * TINY_RECEIVER_UNIT) {

// we received a 1

#if (TINY_RECEIVER_BITS > 16)

TinyIRReceiverControl.IRRawData.ULong |= TinyIRReceiverControl.IRRawDataMask;

#else

TinyIRReceiverControl.IRRawData.UWord |= TinyIRReceiverControl.IRRawDataMask;

#endif

} else {

// we received a 0 - empty code for documentation

}

// prepare for next bit

TinyIRReceiverControl.IRRawDataMask = TinyIRReceiverControl.IRRawDataMask << 1;

TinyIRReceiverControl.IRRawDataBitCounter++;

} else {

// Wrong length -> reset state

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

} else {

// error wrong state for the received level, e.g. if we missed one change interrupt -> reset state

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

}

else {

/*

* We have a space here

*/

if (tState == IR_RECEIVER_STATE_WAITING_FOR_START_SPACE) {

/*

* Check length of header mark here

*/

if (tMicrosOfMarkOrSpace >= lowerValue25Percent(TINY_RECEIVER_HEADER_MARK)

&& tMicrosOfMarkOrSpace <= upperValue25Percent(TINY_RECEIVER_HEADER_MARK)) {

tState = IR_RECEIVER_STATE_WAITING_FOR_FIRST_DATA_MARK;

} else {

// Wrong length of header mark -> reset state

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

}

else if (tState == IR_RECEIVER_STATE_WAITING_FOR_DATA_SPACE) {

// Check data mark length

if (tMicrosOfMarkOrSpace >= lowerValue50Percent(TINY_RECEIVER_BIT_MARK)

&& tMicrosOfMarkOrSpace <= upperValue50Percent(TINY_RECEIVER_BIT_MARK)) {

/*

* We have a valid mark here, check for transmission complete, i.e. the mark of the stop bit

*/

if (TinyIRReceiverControl.IRRawDataBitCounter >= TINY_RECEIVER_BITS

#if !defined(ENABLE_NEC2_REPEATS)

|| (TinyIRReceiverControl.Flags & IRDATA_FLAGS_IS_REPEAT) // Do not check for full length received, if we have a short repeat frame

#endif

) {

/*

* Code complete -> optionally check parity

*/

// Reset state for new start

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

#if !defined(DISABLE_PARITY_CHECKS) && (TINY_RECEIVER_ADDRESS_BITS == 16) && TINY_RECEIVER_ADDRESS_HAS_8_BIT_PARITY

/*

* Check address parity

* Address is sent first and contained in the lower word

*/

if (TinyIRReceiverControl.IRRawData.UBytes[0] != (uint8_t)(~TinyIRReceiverControl.IRRawData.UBytes[1])) {

#if defined(ENABLE_NEC2_REPEATS)

TinyIRReceiverControl.Flags |= IRDATA_FLAGS_PARITY_FAILED; // here we can have the repeat flag already set

#else

TinyIRReceiverControl.Flags = IRDATA_FLAGS_PARITY_FAILED; // here we do not check anything, if we have a repeat

#endif

}

#endif

#if !defined(DISABLE_PARITY_CHECKS) && (TINY_RECEIVER_COMMAND_BITS == 16) && TINY_RECEIVER_COMMAND_HAS_8_BIT_PARITY

/*

* Check command parity

*/

#if (TINY_RECEIVER_ADDRESS_BITS > 0)

if (TinyIRReceiverControl.IRRawData.UBytes[2] != (uint8_t)(~TinyIRReceiverControl.IRRawData.UBytes[3])) {

#if defined(ENABLE_NEC2_REPEATS)

TinyIRReceiverControl.Flags |= IRDATA_FLAGS_PARITY_FAILED;

#else

TinyIRReceiverControl.Flags = IRDATA_FLAGS_PARITY_FAILED;

#endif

# if defined(LOCAL_DEBUG)

Serial.print(F("Parity check for command failed. Command="));

Serial.print(TinyIRReceiverControl.IRRawData.UBytes[2], HEX);

Serial.print(F(" parity="));

Serial.println(TinyIRReceiverControl.IRRawData.UBytes[3], HEX);

# endif

#else

// No address, so command and parity are in the lowest bytes

if (TinyIRReceiverControl.IRRawData.UBytes[0] != (uint8_t) (~TinyIRReceiverControl.IRRawData.UBytes[1])) {

TinyIRReceiverControl.Flags |= IRDATA_FLAGS_PARITY_FAILED;

# if defined(LOCAL_DEBUG)

Serial.print(F("Parity check for command failed. Command="));

Serial.print(TinyIRReceiverControl.IRRawData.UBytes[0], HEX);

Serial.print(F(" parity="));

Serial.println(TinyIRReceiverControl.IRRawData.UBytes[1], HEX);

# endif

#endif

}

#endif

/*

* Call user provided callback here

* The parameter size is dependent of the code variant used in order to save program memory.

* We have 6 cases: 0, 8 bit or 16 bit address, each with 8 or 16 bit command

*/

#if !defined(ARDUINO_ARCH_MBED) && !defined(ESP32) // no Serial etc. in callback for ESP -> no interrupt required, WDT is running!

interrupts(); // enable interrupts, so delay() etc. works in callback

#endif

TinyIRReceiverData.justWritten = true;

TinyIRReceiverData.Flags = TinyIRReceiverControl.Flags;

#if (TINY_RECEIVER_ADDRESS_BITS > 0)

# if TINY_RECEIVER_ADDRESS_HAS_8_BIT_PARITY

// Here we have 8 bit address

TinyIRReceiverData.Address = TinyIRReceiverControl.IRRawData.UBytes[0];

# else

// Here we have 16 bit address

TinyIRReceiverData.Address = TinyIRReceiverControl.IRRawData.UWord.LowWord;

# endif

# if TINY_RECEIVER_COMMAND_HAS_8_BIT_PARITY

// Here we have 8 bit command

TinyIRReceiverData.Command = TinyIRReceiverControl.IRRawData.UBytes[2];

# else

// Here we have 16 bit command

TinyIRReceiverData.Command = TinyIRReceiverControl.IRRawData.UWord.HighWord;

# endif

#else

// Here we have NO address

# if TINY_RECEIVER_COMMAND_HAS_8_BIT_PARITY

// Here we have 8 bit command

TinyIRReceiverData.Command = TinyIRReceiverControl.IRRawData.UBytes[0];

# else

// Here we have 16 bit command

TinyIRReceiverData.Command = TinyIRReceiverControl.IRRawData.UWord;

# endif

#endif

#if defined(USE_CALLBACK_FOR_TINY_RECEIVER)

handleReceivedTinyIRData();

#endif

} else {

// not finished yet

tState = IR_RECEIVER_STATE_WAITING_FOR_DATA_MARK;

}

} else {

// Wrong length -> reset state

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

} else {

// error wrong state for the received level, e.g. if we missed one change interrupt -> reset state

tState = IR_RECEIVER_STATE_WAITING_FOR_START_MARK;

}

}

TinyIRReceiverControl.IRReceiverState = tState;

#ifdef _IR_MEASURE_TIMING

digitalWriteFast(_IR_TIMING_TEST_PIN, LOW); // 2 clock cycles

#endif

}

bool isTinyReceiverIdle() {

return (TinyIRReceiverControl.IRReceiverState == IR_RECEIVER_STATE_WAITING_FOR_START_MARK);

}

/*

* Function to be used as drop in for IrReceiver.decode()

*/

bool TinyReceiverDecode() {

}

/*

* Checks if IR_RECEIVE_PIN is connected and high

* @return true, if IR Receiver is attached

*/

bool isIRReceiverAttachedForTinyReceiver() {

}

/**

* Sets IR_RECEIVE_PIN mode to INPUT, and if IR_FEEDBACK_LED_PIN is defined, sets feedback LED output mode.

* Then call enablePCIInterruptForTinyReceiver()

*/

bool initPCIInterruptForTinyReceiver() {

}

void printTinyReceiverResultMinimal(Print *aSerial) {

}

#if defined (LOCAL_DEBUG_ATTACH_INTERRUPT) && !defined(STR)

// Helper macro for getting a macro definition as string

#define STR_HELPER(x) #x

#define STR(x) STR_HELPER(x)

#endif

/**************************************************

* Pin to interrupt mapping for different platforms

**************************************************/

#if defined(__AVR_ATtiny816__) || defined(__AVR_ATtiny1616__) || defined(__AVR_ATtiny3216__) || defined(__AVR_ATtiny3217__)

#define USE_ATTACH_INTERRUPT_DIRECT

#elif !defined(__AVR__) || defined(TINY_RECEIVER_USE_ARDUINO_ATTACH_INTERRUPT)

// Default for all NON AVR platforms

#define USE_ATTACH_INTERRUPT

#else

# if defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)

#define USE_PCIE

# elif defined(__AVR_ATtiny87__) || defined(__AVR_ATtiny167__)

# if defined(ARDUINO_AVR_DIGISPARKPRO)

# if (IR_RECEIVE_PIN == 3)

#define USE_INT0

# elif (IR_RECEIVE_PIN == 9)

#define USE_INT1

# else

# error "IR_RECEIVE_PIN must be 9 or 3."

# endif // if (IR_RECEIVE_PIN == 9)

# else // defined(ARDUINO_AVR_DIGISPARKPRO)

# if (IR_RECEIVE_PIN == 14)

#define USE_INT0

# elif (IR_RECEIVE_PIN == 3)

#define USE_INT1

# else

# error "IR_RECEIVE_PIN must be 14 or 3."

# endif // if (IR_RECEIVE_PIN == 14)

# endif

# elif (defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__))

# if (IR_RECEIVE_PIN == 21)

#define USE_INT0

# elif (IR_RECEIVE_PIN == 20)

#define USE_INT1

# else

#warning "No pin mapping for IR_RECEIVE_PIN to interrupt found -> attachInterrupt() is used now."

#define USE_ATTACH_INTERRUPT

# endif

# else // defined(__AVR_ATtiny25__)

/*

* ATmegas + ATtiny88 here

*/

# if (IR_RECEIVE_PIN == 2)

#define USE_INT0

# elif (IR_RECEIVE_PIN == 3)

#define USE_INT1

# elif IR_RECEIVE_PIN == 4 || IR_RECEIVE_PIN == 5 || IR_RECEIVE_PIN == 6 || IR_RECEIVE_PIN == 7

//ATmega328 (Uno, Nano ) etc. Enable pin change interrupt 20 to 23 for port PD4 to PD7 (Arduino pin 4 to 7)

#define USE_PCINT2

# elif IR_RECEIVE_PIN == 8 || IR_RECEIVE_PIN == 9 || IR_RECEIVE_PIN == 10 || IR_RECEIVE_PIN == 11 || IR_RECEIVE_PIN == 12 || IR_RECEIVE_PIN == 13

//ATmega328 (Uno, Nano ) etc. Enable pin change interrupt 0 to 5 for port PB0 to PB5 (Arduino pin 8 to 13)

#define USE_PCINT0

# elif IR_RECEIVE_PIN == A0 || IR_RECEIVE_PIN == A1 || IR_RECEIVE_PIN == A2 || IR_RECEIVE_PIN == A3 || IR_RECEIVE_PIN == A4 || IR_RECEIVE_PIN == A5

//ATmega328 (Uno, Nano ) etc. Enable pin change interrupt 8 to 13 for port PC0 to PC5 (Arduino pin A0 to A5)

#define USE_PCINT1

# else

#warning "No pin mapping for IR_RECEIVE_PIN to interrupt found -> attachInterrupt() is used now."

#define USE_ATTACH_INTERRUPT

# endif // if (IR_RECEIVE_PIN == 2)

# endif // defined(__AVR_ATtiny25__)

#endif // ! defined(__AVR__) || defined(TINY_RECEIVER_USE_ARDUINO_ATTACH_INTERRUPT)

/**

* Initializes hardware interrupt generation according to IR_RECEIVE_PIN or use attachInterrupt() function.

* @return true if interrupt was successfully enabled

*/

bool enablePCIInterruptForTinyReceiver() {

}

void disablePCIInterruptForTinyReceiver() {

}

/*

* Specify the right INT0, INT1 or PCINT0 interrupt vector according to different pins and cores.

* The default value of TINY_RECEIVER_USE_ARDUINO_ATTACH_INTERRUPT is set in TinyIRReceiver.h

*/

#if !(defined(USE_ATTACH_INTERRUPT) || defined(USE_ATTACH_INTERRUPT_DIRECT))

# if defined(USE_INT0)

ISR(INT0_vect)

# elif defined(USE_INT1)

ISR(INT1_vect)

# elif defined(USE_PCIE) // For ATtiny85 etc.

// on ATtinyX5 we do not have a INT1_vect but we can use the PCINT0_vect

ISR(PCINT0_vect)

# elif defined(USE_PCINT0)

ISR(PCINT0_vect)

# elif defined(USE_PCINT1)

ISR(PCINT1_vect)

# elif defined(USE_PCINT2)

ISR(PCINT2_vect)

# else

void dummyFunctionToAvoidCompilerErrors()

}

#endif // !(defined(USE_ATTACH_INTERRUPT) || defined(USE_ATTACH_INTERRUPT_DIRECT))

/** @}*/

#if defined(LOCAL_DEBUG_ATTACH_INTERRUPT)

#undef LOCAL_DEBUG_ATTACH_INTERRUPT

#endif

#if defined(LOCAL_TRACE_STATE_MACHINE)

#undef LOCAL_TRACE_STATE_MACHINE

#endif

#if defined(LOCAL_DEBUG)

#undef LOCAL_DEBUG

#endif

#endif // _TINY_IR_RECEIVER_HPP