IRMP crashes when trying to transmit if using ESP32 board manager v 2.6 or greater

[danthepilotman]

Greetings,

While using Arduino IDE V. 2.1.0 I'm seeing an issue where I get a CPU timer_isr_callback fault when trying to transmit IR using an ESP32 Dev Kit 1 board with ESP32 Board Manager version 2.6 or greater. If I revert the board version to 2.5 it works fine. Code snippet below.

Any help in debugging would be appreciated. Might also call for a bug fix in the next library release version.

---

Error Message:
timer_group: timer_isr_callback_add(236): register interrupt service failed

---

Version: 2.1.0
Date: 2023-04-19T15:31:10.185Z
CLI Version: 0.32.2

Copyright © 2023 Arduino SA

---

EPS32 Board Manager version 2.0.5

---

IRMP Library Version 3.6.

---

/* Web_Server_IR_Remote_2.ino

• PinDefinitionsAndMore.h

/* NOTE: Requires combination of ESP32 Board Manager Version 2.5 & IRMP Library Version 3.6.2 */

#include <Arduino.h>
#include <WiFi.h>
#include <WebServer.h>
#include "webpageCode.h"

/*

• Set library modifiers first to set output pin etc.
  */
  #include "PinDefinitionsAndMore.h"
  //#define IR_OUTPUT_IS_ACTIVE_LOW
  #define IRSND_IR_FREQUENCY 38000
  #define IRSND_PROTOCOL_NAMES 1 // Enable protocol number mapping to protocol strings - requires some FLASH.
  #define IRSND_SUPPORT_KASEIKYO_PROTOCOL 1

/*

• After setting the definitions we can include the code and compile it.
  */
  #include <irsnd.hpp>

IRMP_DATA irsnd_data;
WebServer server(80);

const char* ssid = "Bobo";
const char* wifi_password = "ryrie9219";

//===============================================================
// This prints out Wi-Fi settings
//===============================================================
void printWifiStatus() {

// print the SSID of the network you're attached to:
Serial.print("\r\nSSID: ");
Serial.println(WiFi.SSID());

// print your WiFi shield's IP address:
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());

// print the received signal strength:
Serial.print("signal strength (RSSI):");
Serial.print(WiFi.RSSI());
Serial.println(" dBm");
}

//===============================================================
// This routine is executed when changing the operating mode
//===============================================================
void buttonPress() {

irsnd_data.command = (unsigned long) server.arg("CMD_SEL").toInt();

irsnd_send_data(&irsnd_data, true);
irsnd_data_print(&Serial, &irsnd_data);

server.send(200, "text/plain", "");
}

void SendWebsite() {
server.send(200, "text/html",webpageCode);
}

void setup() {
Serial.begin(115200);
#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_IRMP));

irsnd_init();
irmp_irsnd_LEDFeedback(true); // Enable send signal feedback at LED_BUILTIN

Serial.println(F("Ready to send IR signals at pin " STR(IRSND_OUTPUT_PIN)));


/*
 * Send NEC
 */
irsnd_data.protocol = IRMP_KASEIKYO_PROTOCOL;
irsnd_data.address = 0x2002;
irsnd_data.command = 0x8320; // The required inverse of the 8 bit command is added by the send routine.
irsnd_data.flags = 1; // repeat frame 1 time


// true = wait for frame and trailing space/gap to end. This stores timer state and restores it after sending.
if (!irsnd_send_data(&irsnd_data, true)) {
    Serial.println(F("Protocol not found")); // name of protocol is printed by irsnd_data_print()
}
irsnd_data_print(&Serial, &irsnd_data);

WiFi.begin(ssid, wifi_password);

while(WiFi.status()!=WL_CONNECTED) {
delay(500);
Serial.print("."); }

printWifiStatus();

server.on("/", SendWebsite);
server.on("/BTN_PRESS", buttonPress);
server.begin(); //Start server
Serial.println("HTTP server started");

}

void loop() {
server.handleClient();
}

/*

• PinDefinitionsAndMore.h
• Contains pin definitions for IRremote examples for various platforms
• as well as definitions for feedback LED and tone() and includes
• Copyright (C) 2020-2021 Armin Joachimsmeyer
• armin.joachimsmeyer@gmail.com
• This file is part of IRMP https://github.com/ukw100/IRMP.
• IRMP 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 Core/Pin schema

• ---

• DEFAULT/AVR 2 3 4
• ATtinyX5 0|PB0 4|PB4 3|PB3
• ATtiny167 3|PA3 2|PA2 7|PA7 ATTinyCore
• ATtiny167 9|PA3 8|PA2 5|PA7 Digispark pro
• ATtiny3217 18|PA1 19|PA2 0|PA4 MegaTinyCore
• SAMD21 3 4 5
• ESP8266 14|D5 12|D6 %
• ESP32 15 4 %
• BluePill PA6 PA7 PA3
• APOLLO3 11 12 5
• RP2040 3|GPIO15 4|GPIO16 5|GPIO17
  */
  //#define IRMP_MEASURE_TIMING // For debugging purposes.
  //
  #if defined(ESP8266)
  #define FEEDBACK_LED_IS_ACTIVE_LOW // The LED on my board is active LOW
  #define IRMP_INPUT_PIN 14 // D5
  #define IRSND_OUTPUT_PIN 12 // D6 - D4/2 is internal LED
  #define IR_TIMING_TEST_PIN 13 // D7

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

#elif defined(ESP32)
#define IRMP_INPUT_PIN 15 // D15
#define IRSND_OUTPUT_PIN 4 // D4
#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 TONE_PIN 27 // D27 25 & 26 are DAC0 and 1

#elif defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_ARCH_STM32F1)
// BluePill in 2 flavors
// Timer 3 of IRMP blocks PA6, PA7, PB0, PB1 for use by Servo or tone()
#define FEEDBACK_LED_IS_ACTIVE_LOW // The LED on the BluePill is active LOW
#define IRMP_INPUT_PIN PA6
#define IRMP_INPUT_PIN_STRING "PA6"
#define IRSND_OUTPUT_PIN PA7
#define IRSND_OUTPUT_PIN_STRING "PA7"
#define TONE_PIN PA3
#define IR_TIMING_TEST_PIN PA5

#elif defined(AVR_ATtiny25) || defined(AVR_ATtiny45) || defined(AVR_ATtiny85)
#include "ATtinySerialOut.hpp" // Available as Arduino library "ATtinySerialOut"
#define IRMP_INPUT_PIN 0
#define IRSND_OUTPUT_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 IRMP_INPUT_PIN 9 // PA3 - on Digispark board labeled as pin 9
//#define IRMP_INPUT_PIN 14 // PB6 / INT0 is connected to USB+ on DigisparkPro boards
#define IRSND_OUTPUT_PIN 8 // PA2 - on Digispark board labeled as pin 8
#define TONE_PIN 5 // PA7
#define IR_TIMING_TEST_PIN 10 // PA4

else

#define IRMP_INPUT_PIN 3
#define IRSND_OUTPUT_PIN 2
#define TONE_PIN 7

endif

#elif defined(AVR_ATtiny88) // MH-ET Tiny88 board
#include "ATtinySerialOut.hpp" // Available as Arduino library "ATtinySerialOut"
// Pin 6 is TX pin 7 is RX
#define IRMP_INPUT_PIN 3 // INT1
#define IRSND_OUTPUT_PIN 4
#define TONE_PIN 9
#define IR_TIMING_TEST_PIN 8

#elif defined(AVR_ATtiny1616) || defined(AVR_ATtiny3216) || defined(AVR_ATtiny3217)
#define IRMP_INPUT_PIN 18
#define IRSND_OUTPUT_PIN 19
#define TONE_PIN 0

#elif defined(ARDUINO_ARCH_APOLLO3)
#define IRMP_INPUT_PIN 11
#define IRSND_OUTPUT_PIN 12
#define TONE_PIN 5

#elif defined(ARDUINO_ARCH_MBED) && defined(ARDUINO_ARCH_MBED_NANO) // Arduino Nano 33 BLE, Arduino Nano RP2040 Connect
#define IRMP_INPUT_PIN 3 // GPIO15 Start with pin 3 since pin 2|GPIO25 is connected to LED on Pi pico
#define IRSND_OUTPUT_PIN 4 // GPIO16
#define TONE_PIN 5

#elif defined(ARDUINO_ARCH_RP2040) // Pi Pico with arduino-pico core https://github.com/earlephilhower/arduino-pico
#define IRMP_INPUT_PIN 15 // to be compatible with the Arduino Nano RP2040 Connect (pin3)
#define IRSND_OUTPUT_PIN 16
#define TONE_PIN 17

// If you program the Nano RP2040 Connect with this core, then you must redefine LED_BUILTIN
// and use the external reset with 1 kOhm to ground to enter UF2 mode
#undef LED_BUILTIN
#define LED_BUILTIN 6

#elif defined(TEENSYDUINO)
#define IRMP_INPUT_PIN 2
#define IRSND_OUTPUT_PIN 3
#define TONE_PIN 4
#if !defined(ALTERNATIVE_IR_FEEDBACK_LED_PIN)
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#endif
#define IR_TIMING_TEST_PIN 7

#elif defined(AVR)
#define IRMP_INPUT_PIN 2 // To be compatible with interrupt example, pin 2 is chosen here.
#define IRSND_OUTPUT_PIN 3
#define TONE_PIN 4
#if !defined(ALTERNATIVE_IR_FEEDBACK_LED_PIN)
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#endif
#define IR_TIMING_TEST_PIN 7
// You can alternatively specify the input pin with port and bit number if you do not have the Arduino pin number at hand
//#define IRMP_PORT_LETTER D
//#define IRMP_BIT_NUMBER 2

#elif defined(ARDUINO_ARCH_SAMD)
#define IRMP_INPUT_PIN 2
#define IRSND_OUTPUT_PIN 3
#define TONE_PIN 4
#if !defined(ALTERNATIVE_IR_FEEDBACK_LED_PIN)
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#endif
#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

#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 IRMP_INPUT_PIN 2
#define IRSND_OUTPUT_PIN 3
#define TONE_PIN 4
#if !defined(ALTERNATIVE_IR_FEEDBACK_LED_PIN)
#define ALTERNATIVE_IR_FEEDBACK_LED_PIN 6 // E.g. used for examples which use LED_BUILDIN for example output.
#endif
#define IR_TIMING_TEST_PIN 7
#endif // defined(ESP8266)

#if defined(AVR_ATmega4809) // for standard AVR we manage hardware directly in void enablePCIInterrupt()
#define IRMP_USE_ARDUINO_ATTACH_INTERRUPT
#endif

/*

• Helper macro for getting a macro definition as string
  */
  #if !defined(STR_HELPER)
  #define STR_HELPER(x) #x
  #define STR(x) STR_HELPER(x)
  #endif

[ArminJo]

I compiled SendAllProtocols and AllProtocols (#define USE_NO_LCD) with the latest versions and had no errors!

[danthepilotman]

Let me try the SendAllProtocols in my configuration and see what happens.

[danthepilotman]

Okay, so I updated my ESP32 Board manager to V 2.9 and compiled the 3.6.2 version of the IRMP SendAllProtocols example. As expected I get the following serial port output:

START C:\Users\sapy4\AppData\Local\Temp.arduinoIDE-unsaved2023429-17796-5avady.4tprj\SendAllProtocols\SendAllProtocols.ino from May 29 2023
Using library version 3.6.2
Send sample frequency=19000 Hz
Ready to send IR signals at pin 4
Protocol=SIRCS Address=0x1 Command=0x1
E (3135) timer_group: timer_isr_callback_add(236): register interrupt service failed

[ArminJo]

Please change lines 251 ff. in IRTimer.hpp to:

// Use timer with 1 microsecond resolution, main clock is 80MHZ
    if(sReceiveAndSendInterruptTimer == 0) {
        sReceiveAndSendInterruptTimer = timerBegin(3, 80, true);
        timerAttachInterrupt(sReceiveAndSendInterruptTimer, irmp_timer_ISR, false); // false -> level interrupt, true -> edge interrupt, but this is not supported :-(
        timerAlarmWrite(sReceiveAndSendInterruptTimer, ((getApbFrequency() / 80) + (IR_INTERRUPT_FREQUENCY / 2)) / IR_INTERRUPT_FREQUENCY, true);
    }
    timerAlarmEnable(sReceiveAndSendInterruptTimer);

[danthepilotman]

Modified the IRTimer.hpp file as per you instructions above. Compiled and ran program using IRMP v 3.6.2 and ESP32 Board Manager v 2.9.

Happy to report that all works correctly now !

Thank you so much for assisting me with this issue.

So will the fix you recommended be merged in to the next IRMP library release ?

[ArminJo]

Thanks for reporting 🥇

So will the fix you recommended be merged in to the next IRMP library release ?

Done!
I opened issue #83 for this bug and will delete this discussion in a few days.