Hi,
I can't decode IR signals from a certain remote.
I am trying to decode signals from my ceiling fan's remote. But when I try to decode signals I am not getting any hexadecimal codes from the remote. The code that I am using is certainly working because when I used my speaker's remote, it showed the hexadecimal codes. And, I am sure that the fan's remote is working because my fan is responding to the remote.
An interesting thing that I noted was that the pins of IR emitter on the fan's remote is shorted. Please help.
Here is the code that I used
/*
* ReceiveDump.cpp
*
* Dumps the received signal in different flavors.
* Since the printing takes so much time (200 ms @115200 for NEC protocol, 70ms for NEC repeat),
* repeat signals may be skipped or interpreted as UNKNOWN.
*
* This file is part of Arduino-IRremote https://github.com/Arduino-IRremote/Arduino-IRremote.
*
************************************************************************************
* MIT License
*
* Copyright (c) 2020-2022 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.
*
************************************************************************************
*/
#include <Arduino.h>
#include "PinDefinitionsAndMore.h" // Define macros for input and output pin etc.
#if !defined(RAW_BUFFER_LENGTH)
# if RAMEND <= 0x4FF || RAMSIZE < 0x4FF
#define RAW_BUFFER_LENGTH 180 // 750 (600 if we have only 2k RAM) is the value for air condition remotes. Default is 112 if DECODE_MAGIQUEST is enabled, otherwise 100.
# elif RAMEND <= 0x8FF || RAMSIZE < 0x8FF
#define RAW_BUFFER_LENGTH 600 // 750 (600 if we have only 2k RAM) is the value for air condition remotes. Default is 112 if DECODE_MAGIQUEST is enabled, otherwise 100.
# else
#define RAW_BUFFER_LENGTH 750 // 750 (600 if we have only 2k RAM) is the value for air condition remotes. Default is 112 if DECODE_MAGIQUEST is enabled, otherwise 100.
# endif
#endif
/*
* MARK_EXCESS_MICROS is subtracted from all marks and added to all spaces before decoding,
* to compensate for the signal forming of different IR receiver modules. See also IRremote.hpp line 142.
*
* You can change this value accordingly to the receiver module you use.
* The required value can be derived from the timings printed here.
* Keep in mind that the timings may change with the distance
* between sender and receiver as well as with the ambient light intensity.
*/
#define MARK_EXCESS_MICROS 20 // Adapt it to your IR receiver module. 20 is recommended for the cheap VS1838 modules.
//#define RECORD_GAP_MICROS 12000 // Default is 5000. Activate it for some LG air conditioner protocols
//#define DEBUG // Activate this for lots of lovely debug output from the decoders.
#include <IRremote.hpp>
//+=============================================================================
// Configure the Arduino
//
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200); // Status message will be sent to PC at 9600 baud
#if defined(__AVR_ATmega32U4__) || defined(SERIAL_PORT_USBVIRTUAL) || defined(SERIAL_USB) /*stm32duino*/|| defined(USBCON) /*STM32_stm32*/|| defined(SERIALUSB_PID) || defined(ARDUINO_attiny3217)
delay(4000); // To be able to connect Serial monitor after reset or power up and before first print out. Do not wait for an attached Serial Monitor!
#endif
// Just to know which program is running on my Arduino
Serial.println(F("START " __FILE__ " from " __DATE__ "\r\nUsing library version " VERSION_IRREMOTE));
// Start the receiver and if not 3. parameter specified, take LED_BUILTIN pin from the internal boards definition as default feedback LED
IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK);
Serial.print(F("Ready to receive IR signals of protocols: "));
printActiveIRProtocols(&Serial);
Serial.println(F("at pin " STR(IR_RECEIVE_PIN)));
// infos for receive
Serial.print(RECORD_GAP_MICROS);
Serial.println(F(" us is the (minimum) gap, after which the start of a new IR packet is assumed"));
Serial.print(MARK_EXCESS_MICROS);
Serial.println();
Serial.println(F("Because of the verbose output (>200 ms at 115200), repeats are probably not dumped correctly!"));
Serial.println();
}
//+=============================================================================
// The repeating section of the code
//
void loop() {
if (IrReceiver.decode()) { // Grab an IR code
// At 115200 baud, printing takes 200 ms for NEC protocol and 70 ms for NEC repeat
Serial.println(); // blank line between entries
Serial.println(); // 2 blank lines between entries
IrReceiver.printIRResultShort(&Serial);
// Check if the buffer overflowed
if (IrReceiver.decodedIRData.flags & IRDATA_FLAGS_WAS_OVERFLOW) {
Serial.println(F("Try to increase the \"RAW_BUFFER_LENGTH\" value of " STR(RAW_BUFFER_LENGTH) " in " __FILE__));
// see also https://github.com/Arduino-IRremote/Arduino-IRremote#compile-options--macros-for-this-library
} else {
if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
Serial.println(F("Received noise or an unknown (or not yet enabled) protocol"));
}
Serial.println();
IrReceiver.printIRSendUsage(&Serial);
Serial.println();
Serial.println(F("Raw result in internal ticks (50 us) - with leading gap"));
IrReceiver.printIRResultRawFormatted(&Serial, false); // Output the results in RAW format
Serial.println(F("Raw result in microseconds - with leading gap"));
IrReceiver.printIRResultRawFormatted(&Serial, true); // Output the results in RAW format
Serial.println(); // blank line between entries
Serial.print(F("Result as internal 8bit ticks (50 us) array - compensated with MARK_EXCESS_MICROS="));
Serial.println(MARK_EXCESS_MICROS);
IrReceiver.compensateAndPrintIRResultAsCArray(&Serial, false); // Output the results as uint8_t source code array of ticks
Serial.print(F("Result as microseconds array - compensated with MARK_EXCESS_MICROS="));
Serial.println(MARK_EXCESS_MICROS);
IrReceiver.compensateAndPrintIRResultAsCArray(&Serial, true); // Output the results as uint16_t source code array of micros
IrReceiver.printIRResultAsCVariables(&Serial); // Output address and data as source code variables
IrReceiver.compensateAndPrintIRResultAsPronto(&Serial);
/*
* Example for using the compensateAndStorePronto() function.
* Creating this String requires 2210 bytes program memory and 10 bytes RAM for the String class.
* The String object itself requires additional 440 bytes RAM from the heap.
* This values are for an Arduino UNO.
*/
// Serial.println(); // blank line between entries
// String ProntoHEX = F("Pronto HEX contains: "); // Assign string to ProtoHex string object
// if (int size = IrReceiver.compensateAndStorePronto(&ProntoHEX)) { // Dump the content of the IReceiver Pronto HEX to the String object
// // Append compensateAndStorePronto() size information to the String object (requires 50 bytes heap)
// ProntoHEX += F("\r\nProntoHEX is "); // Add codes size information to the String object
// ProntoHEX += size;
// ProntoHEX += F(" characters long and contains "); // Add codes count information to the String object
// ProntoHEX += size / 5;
// ProntoHEX += F(" codes");
// Serial.println(ProntoHEX.c_str()); // Print to the serial console the whole String object
// Serial.println(); // blank line between entries
// }
}
IrReceiver.resume(); // Prepare for the next value
}
}
