Calling enableIRIn() triggers ESP32 kernel error message

[mottibz]

Hello,

I would first like to say a big thank you for a great library!!!

The issue I am facing is that in my code, I initially call enableIRIn() and all is fine but during execution, I need to disable that and later re-enable. After I disable it (calling disableIRIn), I later call enableIRIn, and I then I get the following message on the terminal:
[E][esp32-hal-cpu.c:93] addApbChangeCallback(): duplicate func=400814C4 arg=3FFBDFC4

The code I am using is there for a while and I did not encounter this error message previously. I suspect that one of the updates done since all worked fine is causing that.

I am developing using VSCode + PlatformIO, and have the latest updates installed.
PlatformIO: Core 5.1.1, Home 3.3.4
VSCode 1.54.3
Espressif 3.1.0

I will very highly appreciate your help in resolving this.

Thanks a lot, Motti

[crankyoldgit]

What version of this library are you using?
Can you please reduce your code to the smallest possible size that reproduces the issue you're reporting? Please include that code here so we can duplicate the problem.

[mottibz]

Hi, I am using the latest 2.7.15, upgraded from 2.7.13.
I tried going back to 2.7.13 (forcing using that rev in platformio.ini) but getting the same issue.
It may be related to the latest Espressif32 update?
I will try to reduce the code and see what happens.
Thanks!

[mottibz]

More info:
I took the IRrecvDumpV2 example code and just added disableIR and enableIR after the initial enableIR:

 Serial.println("setup: enable IR");
  irrecv.setTolerance(kTolerancePercentage);  // Override the default tolerance.
  irrecv.enableIRIn();  // Start the receiver

  delay(500);
  Serial.println("setup: disable IR");
  irrecv.disableIRIn();

  delay(500);
  Serial.println("setup: enable IR");
  irrecv.enableIRIn();

I got the same issue:

setup: disable IR
setup: enable IR
[E][esp32-hal-cpu.c:93] addApbChangeCallback(): duplicate func=400813C0 arg=3FFBDE74

Will highly appreciate your help in resolving this! Thanks!!!

[crankyoldgit]

Just confirming, you're using GPIO 14, correct?
e.g.

IRremoteESP8266/examples/IRrecvDumpV2/IRrecvDumpV2.ino

Lines 38 to 41 in c818091

	// An IR detector/demodulator is connected to GPIO pin 14
	// e.g. D5 on a NodeMCU board.
	// Note: GPIO 16 won't work on the ESP8266 as it does not have interrupts.
	const uint16_t kRecvPin = 14;

[mottibz]

I am using GPIO 16 as it is an ESP32: "const uint16_t kRecvPin = 16;"
And as I previously wrote, it worked fine until recently so I guess that it relates to the Espressif32 update, or maybe I am wrong...

[crankyoldgit]

Hmm. My existing setup doesn't seem to reproduce the problem.

e.g.

Here is the output:

IRrecvDump is now running and waiting for IR input on Pin 14
setup: enable IR
setup: disable IR
setup: enable IR
setup: Exiting.
...

here is the modifications to the code:

--- a/examples/IRrecvDumpV2/IRrecvDumpV2.ino
+++ b/examples/IRrecvDumpV2/IRrecvDumpV2.ino
@@ -139,8 +139,18 @@ void setup() {
   // Ignore messages with less than minimum on or off pulses.
   irrecv.setUnknownThreshold(kMinUnknownSize);
 #endif  // DECODE_HASH
+  Serial.println("setup: enable IR");
   irrecv.setTolerance(kTolerancePercentage);  // Override the default tolerance.
   irrecv.enableIRIn();  // Start the receiver
+
+  delay(500);
+  Serial.println("setup: disable IR");
+  irrecv.disableIRIn();
+
+  delay(500);
+  Serial.println("setup: enable IR");
+  irrecv.enableIRIn();
+  Serial.println("setup: Exiting.");
 }
 
 // The repeating section of the code

I'll try updating the ESP core and see what happens.

[mottibz]

You are seeing exactly what I was previously seeing. All works fine.
This is why I suspect one of the updates that may cause this, such as the latest Espressif update.

[mottibz]

Do you know how I can roll back to a previous Espressif core (on VSCode+PlatformIO)? If yes, please let me know and I will try to roll back and see if it works fine. Thanks!

[crankyoldgit]

for the record, here is what I was building on/against:
Visual Studio Code:

Version: 1.53.2
Commit: 622cb03f7e070a9670c94bae1a45d78d7181fbd4
Date: 2021-02-11T11:48:44.518Z
Electron: 11.2.1
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Linux x64 5.4.0-66-generic

and 1.12.4 of "espressif32 ~ Espressif 32" (via pio platform list)

[crankyoldgit]

Yes, I haven't run pio platform update on my VSCode instance in a while. Upgrading to 3.1.1 esp32 now.