Documentation
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@ -648,6 +648,8 @@ Click on the receiver while simulation is running to specify individual NEC IR c
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#### UnitTest
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ReceiveDemo + SendDemo in one program. Demonstrates **receiving while sending**.
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Here you see the delay of the receiver output (blue) from the IR diode input (yellow).
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# WOKWI online examples
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- [Simple receiver](https://wokwi.com/projects/338611596994544210)
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@ -846,7 +848,7 @@ Since each hardware timer has its dedicated output pin(s), you must change timer
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**Exeptions** are currently [ESP32, ARDUINO_ARCH_RP2040, PARTICLE and ARDUINO_ARCH_MBED](https://github.com/Arduino-IRremote/Arduino-IRremote/blob/39bdf8d7bf5b90dc221f8ae9fb3efed9f0a8a1db/examples/SimpleSender/PinDefinitionsAndMore.h#L273), where **PWM generation does not require a timer**.
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## Why do we use 30% duty cycle for sending
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We do it according to the statement in the [Vishay datasheet](https://www.vishay.com/docs/80069/circuit.pdf):
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We [do it](https://github.com/Arduino-IRremote/Arduino-IRremote/blob/master/src/IRSend.hpp#L1192) according to the statement in the [Vishay datasheet](https://www.vishay.com/docs/80069/circuit.pdf):
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- Carrier duty cycle 50 %, peak current of emitter IF = 200 mA, the resulting transmission distance is 25 m.
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- Carrier duty cycle 10 %, peak current of emitter IF = 800 mA, the resulting transmission distance is 29 m. - Factor 1.16
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The reason is, that it is not the pure energy of the fundamental which is responsible for the receiver to detect a signal.
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@ -859,7 +861,7 @@ The IR signal is sampled at a **50 µs interval**. For a constant 525 &micr
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And believe me, if you send a 525 µs signal, your receiver will output something between around 400 and 700 µs!<br/>
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Therefore **we decode by default with a +/- 25% margin** using the formulas [here](https://github.com/Arduino-IRremote/Arduino-IRremote/blob/master/src/IRremoteInt.h#L376-L399).<br/>
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E.g. for the NEC protocol with its 560 µs unit length, we have TICKS_LOW = 8.358 and TICKS_HIGH = 15.0. This means, we accept any value between 8 ticks / 400 µs and 15 ticks / 750 µs (inclusive) as a mark or as a zero space. For a one space we have TICKS_LOW = 25.07 and TICKS_HIGH = 45.0.<br/>
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And since the receivers generated marks are longer or shorter than the spaces, we have introduced the [`MARK_EXCESS_MICROS` value]/https://github.com/Arduino-IRremote/Arduino-IRremote#protocolunknown)
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And since the receivers generated marks are longer or shorter than the spaces, we have introduced the [`MARK_EXCESS_MICROS` value](https://github.com/Arduino-IRremote/Arduino-IRremote#compile-options--macros-for-this-library)
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to compensate for this receiver (and signal strength as well as ambient light dependent :disappointed: ) specific deviation.<br/>
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Welcome to the world of **real world signal processing**.
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@ -57,9 +57,6 @@
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IRCommandDispatcher IRDispatcher;
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#if defined(USE_TINY_IR_RECEIVER)
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#include "TinyIRReceiver.hpp" // included in "IRremote" library
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#if defined(LOCAL_INFO)
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#define CD_INFO_PRINT(...) Serial.print(__VA_ARGS__);
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#define CD_INFO_PRINTLN(...) Serial.println(__VA_ARGS__);
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@ -68,6 +65,10 @@ IRCommandDispatcher IRDispatcher;
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#define CD_INFO_PRINTLN(...) void();
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#endif
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#if defined(USE_TINY_IR_RECEIVER)
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#define USE_CALLBACK_FOR_TINY_RECEIVER // Call the fixed function "void handleReceivedTinyIRData()" each time a frame or repeat is received.
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#include "TinyIRReceiver.hpp" // included in "IRremote" library
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void IRCommandDispatcher::init() {
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initPCIInterruptForTinyReceiver();
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}
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@ -76,25 +77,20 @@ void IRCommandDispatcher::init() {
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* This is the TinyReceiver callback function, which is called if a complete command was received
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* It checks for right address and then call the dispatcher
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*/
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#if defined(ESP8266) || defined(ESP32)
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# if defined(ESP8266) || defined(ESP32)
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IRAM_ATTR
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#endif
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void handleReceivedTinyIRData(uint8_t aAddress, uint8_t aCommand, uint8_t aFlags) {
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IRDispatcher.IRReceivedData.address = aAddress;
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IRDispatcher.IRReceivedData.command = aCommand;
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IRDispatcher.IRReceivedData.isRepeat = aFlags & IRDATA_FLAGS_IS_REPEAT;
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# endif
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void handleReceivedTinyIRData() {
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IRDispatcher.IRReceivedData.address = TinyIRReceiverData.Address;
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IRDispatcher.IRReceivedData.command = TinyIRReceiverData.Command;
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IRDispatcher.IRReceivedData.isRepeat = TinyIRReceiverData.Flags & IRDATA_FLAGS_IS_REPEAT;
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IRDispatcher.IRReceivedData.MillisOfLastCode = millis();
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CD_INFO_PRINT(F("A=0x"));
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CD_INFO_PRINT(aAddress, HEX);
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CD_INFO_PRINT(F(" C=0x"));
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CD_INFO_PRINT(aCommand, HEX);
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if (IRDispatcher.IRReceivedData.isRepeat) {
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CD_INFO_PRINT(F("R"));
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}
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CD_INFO_PRINTLN();
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# if defined(LOCAL_INFO)
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printTinyReceiverResultMinimal(&Serial);
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# endif
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if (aAddress == IR_ADDRESS) { // IR_ADDRESS is defined in *IRCommandMapping.h
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if (TinyIRReceiverData.Address == IR_ADDRESS) { // IR_ADDRESS is defined in *IRCommandMapping.h
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IRDispatcher.IRReceivedData.isAvailable = true;
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if(!IRDispatcher.doNotUseDispatcher) {
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/*
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@ -212,7 +208,7 @@ void IRCommandDispatcher::checkAndCallCommand(bool aCallBlockingCommandImmediate
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if (tIsNonBlockingCommand) {
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// short command here, just call
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CD_INFO_PRINT(F("Run non blocking command: "));
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CD_INFO_PRINTLN (tCommandName);
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CD_INFO_PRINTLN(tCommandName);
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IRMapping[i].CommandToCall();
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} else {
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if (aCallBlockingCommandImmediately && currentBlockingCommandCalled == COMMAND_EMPTY) {
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@ -226,7 +222,7 @@ void IRCommandDispatcher::checkAndCallCommand(bool aCallBlockingCommandImmediate
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* This call is blocking!!!
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*/
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CD_INFO_PRINT(F("Run blocking command: "));
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CD_INFO_PRINTLN (tCommandName);
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CD_INFO_PRINTLN(tCommandName);
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IRMapping[i].CommandToCall();
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#if defined(TRACE)
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@ -240,7 +236,7 @@ void IRCommandDispatcher::checkAndCallCommand(bool aCallBlockingCommandImmediate
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BlockingCommandToRunNext = IRReceivedData.command;
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requestToStopReceived = true; // to stop running command
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CD_INFO_PRINT(F("Requested stop and stored blocking command "));
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CD_INFO_PRINT (tCommandName);
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CD_INFO_PRINT(tCommandName);
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CD_INFO_PRINTLN(F(" as next command to run."));
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}
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}
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@ -49,32 +49,6 @@
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#if defined(USE_TINY_IR_RECEIVER)
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//#define NO_LED_FEEDBACK_CODE // Activate this if you want to suppress LED feedback or if you do not have a LED. This saves 14 bytes code and 2 clock cycles per interrupt.
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/*
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* Set sensible receive pin for different CPU's
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*/
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#if defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__) || defined(__AVR_ATtiny87__) || defined(__AVR_ATtiny167__)
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#include "ATtinySerialOut.hpp" // Available as Arduino library "ATtinySerialOut"
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# if defined(ARDUINO_AVR_DIGISPARKPRO)
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#define IR_RECEIVE_PIN 9 // PA3 - on Digispark board labeled as pin 9
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# else
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#define IR_RECEIVE_PIN 0 // PCINT0
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# endif
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# elif defined(__AVR_ATtiny1616__) || defined(__AVR_ATtiny3216__) || defined(__AVR_ATtiny3217__)
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#define IR_RECEIVE_PIN 10
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# elif (defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__))
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#define IR_RECEIVE_PIN 21 // INT0
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# elif defined(ESP8266)
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#define IR_RECEIVE_PIN 14 // D5
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# elif defined(ESP32)
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#define IR_RECEIVE_PIN 15
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# elif defined(ARDUINO_ARCH_MBED) && defined(ARDUINO_ARCH_MBED_NANO)
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#define IR_RECEIVE_PIN 3 // GPIO15 Use pin 3 since pin 2|GPIO25 is connected to LED on Pi pico
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# elif defined(ARDUINO_ARCH_RP2040) // Pi Pico with arduino-pico core https://github.com/earlephilhower/arduino-pico
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#define IR_RECEIVE_PIN 15 // to be compatible with the Arduino Nano RP2040 Connect (pin3)
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# else
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#define IR_RECEIVE_PIN 2 // INT0
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# endif
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#elif defined(USE_IRMP_LIBRARY)
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/*
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* IRMP version
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@ -271,7 +271,7 @@ void loop() {
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}
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}
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// Check if the command was repeated for more than 1000 ms
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// Check if repeats of the IR command was sent for more than 1000 ms
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if (detectLongPress(1000)) {
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Serial.print(F("Command 0x"));
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Serial.print(IrReceiver.decodedIRData.command, HEX);
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@ -292,7 +292,9 @@ void loop() {
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unsigned long sMillisOfFirstReceive;
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bool sLongPressJustDetected;
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/**
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* @return true once after the repeated command was received for longer than aLongPressDurationMillis milliseconds, false otherwise.
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* True once we received the consecutive repeats for more than aLongPressDurationMillis milliseconds.
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* The first frame, which is no repeat, is NOT counted for the duration!
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* @return true once after the repeated IR command was received for longer than aLongPressDurationMillis milliseconds, false otherwise.
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*/
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bool detectLongPress(uint16_t aLongPressDurationMillis) {
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if (!sLongPressJustDetected && (IrReceiver.decodedIRData.flags & IRDATA_FLAGS_IS_REPEAT)) {
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