/*
 *  PinDefinitionsAndMore.h
 *
 *  Contains pin definitions for IRremote examples for various platforms
 *  as well as definitions for feedback LED and tone() and includes
 *
 *  Copyright (C) 2021  Armin Joachimsmeyer
 *  armin.joachimsmeyer@gmail.com
 *
 *  This file is part of IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.
 *
 *  Arduino-IRremote is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/gpl.html>.
 *
 */

/*
 * Pin mapping table for different platforms
 *
 * Platform     IR input    IR output   Tone
 * -----------------------------------------
 * DEFAULT/AVR  2           3           4
 * ATtinyX5     0           4           3
 * ATtiny167    9           8           5 // Digispark pro number schema
 * ATtiny167    3           2           7
 * ATtiny3217   10          11          3 // TinyCore schema
 * ATtiny1604   2           PA5/3       %
 * SAMD21       3           4           5
 * ESP8266      14 // D5    12 // D6    %
 * ESP32        15          4           27
 * BluePill     PA6         PA7         PA3
 * APOLLO3      11          12          5
 */

#define LED_BUILTIN 4 // !!!
 
//#define _IR_MEASURE_TIMING // For debugging purposes.

#if defined(ESP8266)
#define FEEDBACK_LED_IS_ACTIVE_LOW // The LED on my board (D4) is active LOW
#define IR_RECEIVE_PIN          14 // D5
#define IR_RECEIVE_PIN_STRING   "D5"
#define IR_SEND_PIN             12 // D6 - D4/pin 2 is internal LED
#define IR_SEND_PIN_STRING      "D6"
#define _IR_TIMING_TEST_PIN     13 // D7
#define APPLICATION_PIN          0 // D3

#define tone(...) void()      // tone() inhibits receive timer
#define noTone(a) void()
#define TONE_PIN                42 // Dummy for examples using it


#elif defined(ESP32)
#include <Arduino.h>
#define TONE_LEDC_CHANNEL        1  // Using channel 1 makes tone() independent of receiving timer -> No need to stop receiving timer.

void tone(uint8_t _pin, unsigned int frequency){
  ledcAttachPin(_pin, TONE_LEDC_CHANNEL);
  ledcWriteTone(TONE_LEDC_CHANNEL, frequency);
}

void tone(uint8_t _pin, unsigned int frequency, unsigned long duration){
  ledcAttachPin(_pin, TONE_LEDC_CHANNEL);
  ledcWriteTone(TONE_LEDC_CHANNEL, frequency);
  delay(duration);
  ledcWriteTone(TONE_LEDC_CHANNEL, 0);
}

void noTone(uint8_t _pin){
  ledcWriteTone(TONE_LEDC_CHANNEL, 0);
}

#define IR_RECEIVE_PIN       39  // !!!
#define IR_SEND_PIN          12  // !!!
#define TONE_PIN             27  // D27 25 & 26 are DAC0 and 1
#define APPLICATION_PIN      34  // !!!


#elif defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_STM32F1)
// BluePill in 2 flavors
// Timer 3 blocks PA6, PA7, PB0, PB1 for use by Servo or tone()
#define IR_RECEIVE_PIN          PA6
#define IR_RECEIVE_PIN_STRING   "PA6"
#define IR_SEND_PIN             PA7
#define IR_SEND_PIN_STRING      "PA7"
#define TONE_PIN                PA3
#define _IR_TIMING_TEST_PIN      PA5
#define APPLICATION_PIN         PA2

#elif defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
#include "ATtinySerialOut.hpp" // Available as Arduino library "ATtinySerialOut". saves 370 bytes program space and 38 bytes RAM for digistump core
#define IR_RECEIVE_PIN  0
#define IR_SEND_PIN     4 // Pin 2 is serial output with ATtinySerialOut. Pin 1 is internal LED and Pin3 is USB+ with pullup on Digispark board.
#define TONE_PIN        3
#define _IR_TIMING_TEST_PIN 3

#elif defined(__AVR_ATtiny87__) || defined(__AVR_ATtiny167__)
#include "ATtinySerialOut.hpp" // Available as Arduino library "ATtinySerialOut"
// For ATtiny167 Pins PB6 and PA3 are usable as interrupt source.
#  if defined(ARDUINO_AVR_DIGISPARKPRO)
#define IR_RECEIVE_PIN   9 // PA3 - on Digispark board labeled as pin 9
//#define IR_RECEIVE_PIN  14 // PB6 / INT0 is connected to USB+ on DigisparkPro boards
#define IR_SEND_PIN      8 // PA2 - on Digispark board labeled as pin 8
#define TONE_PIN         5 // PA7
#define _IR_TIMING_TEST_PIN 10 // PA4
#  else
#define IR_RECEIVE_PIN  3
#define IR_SEND_PIN     2
#define TONE_PIN        7
#  endif

#elif defined(__AVR_ATtiny88__) // MH-ET Tiny88 board
#include "ATtinySerialOut.hpp" // Available as Arduino library "ATtinySerialOut". Saves 128 bytes program space
// Pin 6 is TX pin 7 is RX
#define IR_RECEIVE_PIN   3 // INT1
#define IR_SEND_PIN      4
#define TONE_PIN         9
#define _IR_TIMING_TEST_PIN 8

#elif defined(__AVR_ATtiny3217__)
#define IR_RECEIVE_PIN  10
#define IR_SEND_PIN     11
#define TONE_PIN         3
#define APPLICATION_PIN  5

#elif defined(__AVR_ATtiny1604__)
#define IR_RECEIVE_PIN   2 // To be compatible with interrupt example, pin 2 is chosen here.
#define IR_SEND_PIN      3
#define APPLICATION_PIN  5

#define tone(...) void()      // Define as void, since TCB0_INT_vect is also used by tone()
#define noTone(a) void()
#define TONE_PIN        42 // Dummy for examples using it

#  elif defined(__AVR_ATmega1284__) || defined(__AVR_ATmega1284P__) \
|| defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__) \
|| defined(__AVR_ATmega324P__) || defined(__AVR_ATmega324A__) \
|| defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega164A__) \
|| defined(__AVR_ATmega164P__) || defined(__AVR_ATmega32__) \
|| defined(__AVR_ATmega16__) || defined(__AVR_ATmega8535__) \
|| defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) \
|| defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__) \
|| defined(__AVR_ATmega8515__) || defined(__AVR_ATmega162__)
#define IR_RECEIVE_PIN      2
#define IR_SEND_PIN        13
#define TONE_PIN            4
#define APPLICATION_PIN     5
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#define _IR_TIMING_TEST_PIN  7

#elif defined(ARDUINO_ARCH_APOLLO3)
#define IR_RECEIVE_PIN  11
#define IR_SEND_PIN     12
#define TONE_PIN         5

#elif defined(ARDUINO_ARCH_MBED) // Arduino Nano 33 BLE
#define IR_RECEIVE_PIN      2
#define IR_SEND_PIN         3
#define TONE_PIN            4
#define APPLICATION_PIN     5
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#define _IR_TIMING_TEST_PIN  7

#elif defined(TEENSYDUINO)
#define IR_RECEIVE_PIN      2
#define IR_SEND_PIN         3
#define TONE_PIN            4
#define APPLICATION_PIN     5
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#define _IR_TIMING_TEST_PIN  7

#elif defined(__AVR__) // Default as for ATmega328 like on Uno, Nano etc.
#define IR_RECEIVE_PIN      2 // To be compatible with interrupt example, pin 2 is chosen here.
#define IR_SEND_PIN         3
#define TONE_PIN            4
#define APPLICATION_PIN     5
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#define _IR_TIMING_TEST_PIN  7

#elif defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_SAM)
#define IR_RECEIVE_PIN      2
#define IR_SEND_PIN         3
#define TONE_PIN            4
#define APPLICATION_PIN     5
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#define _IR_TIMING_TEST_PIN  7

// On the Zero and others we switch explicitly to SerialUSB
#define Serial SerialUSB

// Definitions for the Chinese SAMD21 M0-Mini clone, which has no led connected to D13/PA17.
// Attention!!! D2 and D4 are switched on these boards!!!
// If you connect the LED, it is on pin 24/PB11. In this case activate the next two lines.
//#undef LED_BUILTIN
//#define LED_BUILTIN 24 // PB11
// As an alternative you can choose pin 25, it is the RX-LED pin (PB03), but active low.In this case activate the next 3 lines.
//#undef LED_BUILTIN
//#define LED_BUILTIN 25 // PB03
//#define FEEDBACK_LED_IS_ACTIVE_LOW // The RX LED on the M0-Mini is active LOW

#elif defined (NRF51) // BBC micro:bit
#define IR_RECEIVE_PIN      2
#define IR_SEND_PIN         3
#define APPLICATION_PIN     1
#define _IR_TIMING_TEST_PIN  4

#define tone(...) void()    // no tone() available
#define noTone(a) void()
#define TONE_PIN           42 // Dummy for examples using it

#else
#warning Board / CPU is not detected using pre-processor symbols -> using default values, which may not fit. Please extend PinDefinitionsAndMore.h.
// Default valued for unidentified boards
#define IR_RECEIVE_PIN      2
#define IR_SEND_PIN         3
#define TONE_PIN            4
#define APPLICATION_PIN     5
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#define _IR_TIMING_TEST_PIN  7
#endif // defined(ESP8266)

#if !defined (FLASHEND)
#define FLASHEND 0xFFFF // Dummy value for platforms where FLASHEND is not defined
#endif
/*
 * Helper macro for getting a macro definition as string
 */
#define STR_HELPER(x) #x
#define STR(x) STR_HELPER(x)

/*
  OLIMEX ESP32-EVB IR example

 * ReceiveAndSend.cpp
 * 
 *
 * Record and play back last received IR signal at button press.
 * The logic is:
 * If the button is pressed, send the IR code.
 * If an IR code is received, record it.
 *
 * An example for simultaneous receiving and sending is in the UnitTest example.
 *
 * An IR detector/demodulator must be connected to the input IR_RECEIVE_PIN.
 *
 * A button must be connected between the input SEND_BUTTON_PIN and ground.
 * A visible LED can be connected to STATUS_PIN to provide status.
 *
 * Initially coded 2009 Ken Shirriff http://www.righto.com
 *
 *  This file is part of Arduino-IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.
 *
 */

#include <Arduino.h>
#include "PinDefinitionsAndMore.h"

//#define EXCLUDE_EXOTIC_PROTOCOLS // saves around 900 bytes program space

#include <IRremote.hpp>

int SEND_BUTTON_PIN = APPLICATION_PIN;
int STATUS_PIN = LED_BUILTIN;

int DELAY_BETWEEN_REPEAT = 50;

// On the Zero and others we switch explicitly to SerialUSB
#if defined(ARDUINO_ARCH_SAMD)
#define Serial SerialUSB
#endif

struct storedIRDataStruct { // Storage for the recorded code
  IRData receivedIRData;
  // extensions for sendRaw
  uint8_t rawCode[RAW_BUFFER_LENGTH]; // durations if raw
  uint8_t rawCodeLength;              // length of code
} sStoredIRData;

int lastButtonState;

void storeCode(IRData *aIRReceivedData);
void sendCode(storedIRDataStruct *aIRDataToSend);

void setup() {
  Serial.begin(115200);
  Serial.println();
  Serial.println(F("Start OLIMEX ESP32-EVB IR example..."));
  
  // Just to know which program is running on my Arduino
  //Serial.println(F("START " __FILE__ " from " __DATE__ "\r\nUsing library version " VERSION_IRREMOTE));

  IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK); // Start the receiver, enable feedback LED, take LED feedback pin from the internal boards definition
  IrSender.begin(IR_SEND_PIN, ENABLE_LED_FEEDBACK); // Specify send pin and enable feedback LED at default feedback LED pin

  pinMode(STATUS_PIN, OUTPUT);
  pinMode(SEND_BUTTON_PIN, INPUT); // !!!

} // setup

// Stores the code for later playback in sStoredIRData

void storeCode(IRData *aIRReceivedData) {
  if (aIRReceivedData->flags & IRDATA_FLAGS_IS_REPEAT)      {Serial.println(F("Ignore repeat")); return;}
  if (aIRReceivedData->flags & IRDATA_FLAGS_IS_AUTO_REPEAT) {Serial.println(F("Ignore autorepeat")); return;}
  if (aIRReceivedData->flags & IRDATA_FLAGS_PARITY_FAILED)  {Serial.println(F("Ignore parity error")); return;}

  sStoredIRData.receivedIRData = *aIRReceivedData; // Copy decoded data

  if (sStoredIRData.receivedIRData.protocol == UNKNOWN) {
    Serial.print(F("Received unknown code and store "));
    Serial.print(IrReceiver.decodedIRData.rawDataPtr->rawlen - 1);
    Serial.println(F(" timing entries as raw "));
    
    IrReceiver.printIRResultRawFormatted(&Serial, true); // output the results in RAW format
    
    sStoredIRData.rawCodeLength = IrReceiver.decodedIRData.rawDataPtr->rawlen - 1;
    IrReceiver.compensateAndStoreIRResultInArray(sStoredIRData.rawCode); // store current raw data in dedicated array for later usage
  } else {
    IrReceiver.printIRResultShort(&Serial);
    sStoredIRData.receivedIRData.flags = 0; // clear flags -esp. repeat- for later sending
    Serial.println();
  }
} // storeCode( )

void sendCode(storedIRDataStruct *aIRDataToSend) {
  if (aIRDataToSend->receivedIRData.protocol == UNKNOWN) { // raw
    IrSender.sendRaw(aIRDataToSend->rawCode, aIRDataToSend->rawCodeLength, 38); // 38 KHz
    Serial.print(F("Sent raw "));
    Serial.print(aIRDataToSend->rawCodeLength);
    Serial.println(F(" marks or spaces"));
  } else {
    IrSender.write(&aIRDataToSend->receivedIRData, NO_REPEATS); // write func switch for different protocols
    Serial.print(F("Sent: "));
    printIRResultShort(&Serial, &aIRDataToSend->receivedIRData);
  }
}

void loop() {
  int buttonState = digitalRead(SEND_BUTTON_PIN); // active LOW
  // Serial.print(F("=>")); Serial.println(buttonState); !!!
  if (lastButtonState == LOW && buttonState == HIGH) {
    Serial.println(F("Button released"));
    IrReceiver.start(); // re-enable receiver
  }

  // Check for static button state

  if (buttonState == LOW) {
    IrReceiver.stop();
    
    // Button pressed send stored data or repeat
    Serial.println(F("Button pressed, now sending"));
    digitalWrite(STATUS_PIN, HIGH);
    if (lastButtonState == buttonState) {
      sStoredIRData.receivedIRData.flags = IRDATA_FLAGS_IS_REPEAT;
    }
    sendCode(&sStoredIRData);
    digitalWrite(STATUS_PIN, LOW);
    delay(DELAY_BETWEEN_REPEAT); // Wait a bit between retransmissions
  } else if (IrReceiver.available()) { // Button is not pressed, check for incoming data
    storeCode(IrReceiver.read());
    IrReceiver.resume();
  }

  lastButtonState = buttonState;
} // loop