attachInterrupt not called

[mamartins]

Hello,

I'm trying to run this code on an ESP32, I can upload it without any trouble, but no output is presented when I press a remote button.
If I add this: Serial.println("handleInterrupt");
to the loop()function I can see 0 being printed indefinitely and when I press my remote some 10's are printed, so the receiver is working. But for some reason the code isn't calling the attachInterrupt function, I've tried to change the 0 to 2 or to digitalPinToInterrupt(2) because according to the docs the number should be the pin we want to track but that actually breaks the app with the error Guru Meditation Error: Core 1 panic'ed (Coprocessor exception).

Any idea of why is it not hitting the function?

Thanks

[Peterkn2001]

If you were running this on an ESP8266 with the latest ESP core installed then it would complain about ISR not in IRAM.
The fix for this is to add ‘ICACHE_RAM_ATTR’ in the interrupt function call name like this:

void ICACHE_RAM_ATTR handleInterrupt() {

and to move the interrupt function up the code to before the void setup (to avoid a ‘not declared in scope’ compilation error).

I’m not sure if the ESP32 core is also as fussy about this now, but this is where I’d start looking.

Pete.

[mamartins]

Hello @Peterkn2001 sorry for my late reply. I tried adding that but it didn't fix the problem, I'll continue to dig

I think that the problem is that the code uses:
attachInterrupt(0, handleInterrupt, CHANGE);
as
attachInterrupt(interrupt, ISR, mode) which is not recommended

[Goeste]

are there any news? I am also not able to sniff any codes with the nodeMCU esp 12e (8266).

My serial monitor just throws errors... over and over... however, it seems that 'ISR not in IRAM!' but how to fix this?

09:35:51.490 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:51.537 -> 
09:35:51.537 -> Abort called
09:35:51.537 -> 
09:35:51.537 -> >>>stack>>>
09:35:51.584 -> 
09:35:51.584 -> ctx: cont
09:35:51.584 -> sp: 3fffff00 end: 3fffffc0 offset: 0000
09:35:51.630 -> 3fffff00:  feefeffe feefeffe feefeffe 3ffef3ac  
09:35:51.677 -> 3fffff10:  000000fe 00000000 00000000 00000000  
09:35:51.724 -> 3fffff20:  00000000 00000000 00000000 00ff0000  
09:35:51.771 -> 3fffff30:  5ffffe00 5ffffe00 00002580 3ffee61c  
09:35:51.818 -> 3fffff40:  00000000 00000003 00000000 40201f52  
09:35:51.865 -> 3fffff50:  4010041d 3ffe87ea 3ffee5b4 40201f64  
09:35:51.958 -> 3fffff60:  402013ac 3ffe87ea 00000000 40202465  
09:35:51.958 -> 3fffff70:  3fffdad0 00000009 3ffee5b4 402015a0  
09:35:52.052 -> 3fffff80:  3fffdad0 00000000 3ffee5b4 40202504  
09:35:52.100 -> 3fffff90:  3fffdad0 00000000 3ffee5b4 40201285  
09:35:52.146 -> 3fffffa0:  feefeffe feefeffe 3ffee608 40201ae0  
09:35:52.194 -> 3fffffb0:  feefeffe feefeffe 3ffe85d8 40100cd9  
09:35:52.241 -> <<<stack<<<
09:35:52.241 -> 
09:35:52.241 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:52.334 -> H!⸮ԅ⸮⸮@H⸮⸮�⸮f!Bereit...
09:35:52.430 -> ISR not in IRAM!
09:35:52.430 -> 
09:35:52.430 -> User exception (panic/abort/assert)
09:35:52.478 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:52.573 -> 
09:35:52.573 -> Abort called
09:35:52.573 -> 
09:35:52.573 -> >>>stack>>>
09:35:52.573 -> 
09:35:52.573 -> ctx: cont
09:35:52.573 -> sp: 3fffff00 end: 3fffffc0 offset: 0000
09:35:52.621 -> 3fffff00:  feefeffe feefeffe feefeffe 3ffef3ac  
09:35:52.714 -> 3fffff10:  000000fe 00000000 00000000 00000000  
09:35:52.714 -> 3fffff20:  00000000 00000000 00000000 00ff0000  
09:35:52.808 -> 3fffff30:  5ffffe00 5ffffe00 00002580 3ffee61c  
09:35:52.808 -> 3fffff40:  00000000 00000003 00000000 40201f52  
09:35:52.902 -> 3fffff50:  4010041d 3ffe87ea 3ffee5b4 40201f64  
09:35:52.949 -> 3fffff60:  402013ac 3ffe87ea 00000000 40202465  
09:35:52.996 -> 3fffff70:  3fffdad0 00000009 3ffee5b4 402015a0  
09:35:53.043 -> 3fffff80:  3fffdad0 00000000 3ffee5b4 40202504  
09:35:53.089 -> 3fffff90:  3fffdad0 00000000 3ffee5b4 40201285  
09:35:53.136 -> 3fffffa0:  feefeffe feefeffe 3ffee608 40201ae0  
09:35:53.183 -> 3fffffb0:  feefeffe feefeffe 3ffe85d8 40100cd9  
09:35:53.277 -> <<<stack<<<
09:35:53.277 -> 
09:35:53.277 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:53.324 -> ⸮⸮܆�⸮⸮D�⸮�⸮�⸮Bereit...
09:35:53.418 -> ISR not in IRAM!
09:35:53.418 -> 
09:35:53.418 -> User exception (panic/abort/assert)
09:35:53.511 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:53.558 -> 
09:35:53.558 -> Abort called
09:35:53.558 -> 
09:35:53.558 -> >>>stack>>>
09:35:53.605 -> 
09:35:53.605 -> ctx: cont
09:35:53.605 -> sp: 3fffff00 end: 3fffffc0 offset: 0000
09:35:53.651 -> 3fffff00:  feefeffe feefeffe feefeffe 3ffef3ac  
09:35:53.697 -> 3fffff10:  000000fe 00000000 00000000 00000000  
09:35:53.745 -> 3fffff20:  00000000 00000000 00000000 00ff0000  
09:35:53.792 -> 3fffff30:  5ffffe00 5ffffe00 00002580 3ffee61c  
09:35:53.838 -> 3fffff40:  00000000 00000003 00000000 40201f52  
09:35:53.885 -> 3fffff50:  4010041d 3ffe87ea 3ffee5b4 40201f64  
09:35:53.981 -> 3fffff60:  402013ac 3ffe87ea 00000000 40202465  
09:35:53.981 -> 3fffff70:  3fffdad0 00000009 3ffee5b4 402015a0  
09:35:54.075 -> 3fffff80:  3fffdad0 00000000 3ffee5b4 40202504  
09:35:54.122 -> 3fffff90:  3fffdad0 00000000 3ffee5b4 40201285  
09:35:54.169 -> 3fffffa0:  feefeffe feefeffe 3ffee608 40201ae0  
09:35:54.216 -> 3fffffb0:  feefeffe feefeffe 3ffe85d8 40100cd9  
09:35:54.263 -> <<<stack<<<
09:35:54.263 -> 
09:35:54.263 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:54.356 -> ⸮⸮⸮⸮�
09:35:54.356 -> ⸮d⸮10�⸮⸮Bereit...
09:35:54.449 -> ISR not in IRAM!
09:35:54.449 -> 
09:35:54.449 -> User exception (panic/abort/assert)
09:35:54.497 -> --------------- CUT HERE FOR EXCEPTION DECODER ---------------
09:35:54.590 -> 
09:35:54.590 -> Abort called
09:35:54.590 -> 
09:35:54.590 -> >>>stack>>>
09:35:54.637 -> 
09:35:54.637 -> ctx: cont
09:35:54.637 -> sp: 3fffff00 end: 3fffffc0 offset: 0000
09:35:54.637 -> 3fffff00:  feefeffe feefeffe feefeffe 3ffef3ac  
09:35:54.731 -> 3fffff10:  000000fe 00000000 00000000 00000000  
09:35:54.731 -> 3fffff20:  00000000 00000000 00000000 00ff0000  
09:35:54.825 -> 3fffff30:  5ffffe00 5ffffe00 00002580 3ffee61c  
09:35:54.871 -> 3fffff40:  00000000 00000003 00000000 40201f52  
09:35:54.918 -> 3fffff50:  4010041d 3ffe87ea 3ffee5b4 40201f64  
09:35:54.965 -> 3fffff60:  402013ac 3ffe87ea 00000000 40202465  
09:35:55.010 -> 3fffff70:  3fffdad0 00000009 3ffee5b4 402015a0  
09:35:55.104 -> 3fffff80:  3fffdad0 00000000 3ffee5b4 40202504  
09:35:55.104 -> 3fffff90:  3fffdad0 00000000 3ffee5b4 40201285  
09:35:55.199 -> 3fffffa0:  feefeffe feefeffe 3ffee608 40201ae0  
09:35:55.199 -> 3fffffb0:  feefeffe feefeffe 3ffe85d8 40100cd9  
09:35:55.293 -> <<<stack<<<
09:35:55.293 -> 
09:35:55.293 -> --------------- CUT HERE FOR EXCEPTION DECODER ------------

best, goeste

[Peterkn2001]

'ISR not in IRAM!' but how to fix this?

Have you tried what I suggested...

The fix for this is to add ‘ICACHE_RAM_ATTR’ in the interrupt function call name like this:

void ICACHE_RAM_ATTR handleInterrupt() {

and to move the interrupt function up the code to before the void setup (to avoid a ‘not declared in scope’ compilation error).

Pete.

[Goeste]

Hi Pete,
Yh I tried that. but than I get an error that there is no header file (.h) available...
Also, I don't get any feedback from "sniffing" my DC90

[eporsche]

Hi - I have the same question.
I am not completely sure to which pin I should assign the interrupt handler. Using pin 2 will give me the error:
Core 1 panic'ed (Interrupt wdt timeout on CPU1).
I also tried to put the code from the interrupt function into the main loop - but without success.

Any ideas?

The code I am using looks like this:

#include <ELECHOUSE_CC1101_SRC_DRV.h>

int logfile[40];
int i = 0;
float lastTime = 0;
boolean capturing = false;
boolean checking = false;
boolean dataIncoming = false;


void setup() {

  Serial.begin(9600);
  
  //byte ssck byte miso, byte mosi, byte ss
  ELECHOUSE_cc1101.setSpiPin(14, 12, 13, 15);

  if (ELECHOUSE_cc1101.getCC1101()) {      // Check the CC1101 Spi connection.
    //Serial.println("Connection OK");
  } else {
    //Serial.println("Connection Error");
  }

  //CC1101 Settings:                (Settings with "//" are optional!)
  ELECHOUSE_cc1101.Init();            // must be set to initialize the cc1101!
  ELECHOUSE_cc1101.setMHZ(433.92); // Here you can set your basic frequency. The lib calculates the frequency automatically (default = 433.92).The cc1101 can: 300-348 MHZ, 387-464MHZ and 779-928MHZ. Read More info from datasheet.
  ELECHOUSE_cc1101.SetRx();  // set Receive on

  pinMode(2, INPUT);
  
  attachInterrupt(2, handleInterrupt, CHANGE);

}

void loop() {
// put your main code here, to run repeatedly:

}

void ICACHE_RAM_ATTR handleInterrupt() {
    if (!capturing) {  //wenn keine Aufnahme läuft
      if (!checking) {  //wenn nicht gerade auf "Start-Signal" geprüft wird
        if (digitalRead(2) == HIGH) {  //wenn Wechsel von LOW nach (jetzt) HIGH
          lastTime = micros();
          checking = true;
        }
      } else {    //wenn gerade auf Start-Signal geprüft wird
        if ((micros() - lastTime > 4000) && (digitalRead(2) == LOW)) {    //wenn HIGH-Phase länger als 4ms war und wir jetzt LOW sind
          //das war das Start-Signal
          Serial.println("Start Signal");
          
          checking = false;
          capturing = true;
          lastTime = micros();
        } else {
          //das war nicht das Start-Signal
          checking = false;
        }
      }
    } else {  //es läuft eine Aufnahme
      if (!dataIncoming) {  //bisher noch keine Nutzdaten empfangen
        if ((micros() - lastTime > 1000) && digitalRead(2) == HIGH) {  //das war die lange LOW-Phase vor Beginn der Übertragung
          dataIncoming = true; //ab jetzt kommen Daten  
          lastTime = micros();
        }
      } else {  //jetzt wird es interessant, jetzt kommen die Daten
        //wenn steigene Flanke (also jetzt HIGH)
        if (digitalRead(2) == HIGH) {
          //Beginn der HIGH-Phase merken
          lastTime = micros();
        } else if (digitalRead(2) == LOW) { //wenn fallende Flanke (also jetzt LOW)
        //=> prüfe wie lange HIGH war
          if (micros() - lastTime > 500) {
            //long
            logfile[i] = 1;
          } else {
          //short
            logfile[i] = 0;
          }
          
          if (i < 39) {
            //solange noch nicht alle Bits empfangen wurden
            i++;
          } else {
            //wir sind fertig
            noInterrupts();  //Interrupts aus damit Ausgabe nicht gestört wird
            Serial.println("Empfangene Daten:");
            //Ausgabe als "quad-bit"
            for (i = 0; i <= 38; i = i + 2) {
              if ((logfile[i] == 0) && (logfile[i+1] == 0))
                Serial.print("0");
  
              else if ((logfile[i] == 0) && (logfile[i+1] == 1))
                Serial.print("F");
  
              else if ((logfile[i] == 1) && (logfile[i+1] == 0))
                Serial.print("Q");
  
              else if ((logfile[i] == 1) && (logfile[i+1] == 1))
                Serial.print("1");
            }
            Serial.println();
            i = 0;
            dataIncoming = false;
            capturing = false;
            interrupts();  //Interrupts wieder an
            return;  //und alles auf Anfang
          }
        }
      }
    }
}

[eporsche]

It might be a timing issue - when I put everything into the loop and add some debug serial.println lines into the code. I start getting some output:

Empfangene Daten:
00F1111111Q001111111
Empfangene Daten:
1111F111111111111111
Empfangene Daten:
000011111Q0F1111111Q
Empfangene Daten:
F111Q00Q0111111F1F11
Empfangene Daten:
000111111110F1111111
Empfangene Daten:
11111111111111111000
Empfangene Daten:
000F1111111111110001
Empfangene Daten:
111111110000F1111111

Hoewever I think this is just noise...

[eporsche]

Via https://github.com/pimatic/RFControl I get the following raw data. But I am not able to decode it..

4852 1524 352 724 720 380 700 372 348 752 700 376 728 372 720 352
728 372 344 728 376 720 720 352 376 720 348 732 720 376 356 724
372 720 352 372 720 348 728 720 376 728 348 720 380 352 724 720
380 352 720 376 732 348 720 380 728 344 724 728 372 344 728 728
372 348 728 372 720 352 728 720 372 352 728 372 724 352 724 744
7836 4876

4860 1504 348 748 700 400 696 372 352 728 720 380 728 372 696 380
728 348 372 728 348 744 724 352 372 720 356 728 720 380 352 724
720 380 728 348 368 732 348 744 724 348 720 380 728 344 372 720
728 348 368 728 376 724 344 728 372 720 372 704 748 348 424 448
224 272 400 200 148 124 400 272 248 324 124 576 148 224 348 172
200 1100

[eporsche]

Nevermind! Found the sendByTimings function in the referenced repository and it is working now!