ESP32C6 Zigbee Analog example - Crash

[oli-the-kitty]

Board

ESP32-C6 dev module

Device Description

ESP32-C6-WROOM-1 module on a generic ebay development board with 2 USB-C ports.

Hardware Configuration

There is no other hardware attached to the board.

Version

latest development Release Candidate (RC-X)

IDE Name

Arduino IDE v1.8.19

Operating System

Windows 11

Flash frequency

80MHz

PSRAM enabled

no

Upload speed

921600

Description

I wanted to try out the Zigbee analog input output example. The code compiled okay, was flashed to the board, paired up with zigbee network (Home Assistant via Sonoff dongle) and crashed. Since then it keeps crashing as soon as it connects to the network. The example was completely unmodified.

Sketch

// Copyright 2025 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @brief This example demonstrates Zigbee analog input / output device.
 *
 * The example demonstrates how to use Zigbee library to create a end device analog device.
 *
 * Proper Zigbee mode must be selected in Tools->Zigbee mode
 * and also the correct partition scheme must be selected in Tools->Partition Scheme.
 *
 * Please check the README.md for instructions and more detailed description.
 *
 * Created by Jan Procházka (https://github.com/P-R-O-C-H-Y/)
 * Modified by Pat Clay
 */

#ifndef ZIGBEE_MODE_ED
#error "Zigbee end device mode is not selected in Tools->Zigbee mode"
#endif

#include "Zigbee.h"

/* Zigbee analog device configuration */
#define ANALOG_DEVICE_ENDPOINT_NUMBER 1

uint8_t analogPin = A0;
uint8_t button = BOOT_PIN;

ZigbeeAnalog zbAnalogDevice = ZigbeeAnalog(ANALOG_DEVICE_ENDPOINT_NUMBER);

void onAnalogOutputChange(float analog_output) {
  Serial.printf("Received analog output change: %.1f\r\n", analog_output);
}

void setup() {
  Serial.begin(115200);
  Serial.println("Starting...");

  // Init button switch
  pinMode(button, INPUT_PULLUP);

  // Set analog resolution to 10 bits
  analogReadResolution(10);

  // Optional: set Zigbee device name and model
  zbAnalogDevice.setManufacturerAndModel("Espressif", "ZigbeeAnalogDevice");

  // Add analog clusters to Zigbee Analog according your needs
  zbAnalogDevice.addAnalogInput();
  zbAnalogDevice.addAnalogOutput();

  // If analog output cluster is added, set callback function for analog output change
  zbAnalogDevice.onAnalogOutputChange(onAnalogOutputChange);

  // Add endpoints to Zigbee Core
  Zigbee.addEndpoint(&zbAnalogDevice);

  Serial.println("Starting Zigbee...");
  // When all EPs are registered, start Zigbee in End Device mode
  if (!Zigbee.begin()) {
    Serial.println("Zigbee failed to start!");
    Serial.println("Rebooting...");
    ESP.restart();
  } else {
    Serial.println("Zigbee started successfully!");
  }
  Serial.println("Connecting to network");
  while (!Zigbee.connected()) {
    Serial.print(".");
    delay(100);
  }
  Serial.println("Connected");

  // Optional: Add reporting for analog input
  zbAnalogDevice.setAnalogInputReporting(0, 30, 10);  // report every 30 seconds if value changes by 10
}

void loop() {
  static uint32_t timeCounter = 0;

  // Read ADC value and update the analog value every 2s
  if (!(timeCounter++ % 20)) {  // delaying for 100ms x 20 = 2s
    float analog = (float)analogRead(analogPin);
    Serial.printf("Updating analog input to %.1f\r\n", analog);
    zbAnalogDevice.setAnalogInput(analog);

    // Analog input supports reporting
    zbAnalogDevice.reportAnalogInput();
  }

  // Checking button for factory reset and reporting
  if (digitalRead(button) == LOW) {  // Push button pressed
    // Key debounce handling
    delay(100);
    int startTime = millis();
    while (digitalRead(button) == LOW) {
      delay(50);
      if ((millis() - startTime) > 3000) {
        // If key pressed for more than 3secs, factory reset Zigbee and reboot
        Serial.println("Resetting Zigbee to factory and rebooting in 1s.");
        delay(1000);
        Zigbee.factoryReset();
      }
    }
  }
  delay(100);
}

Debug Message

ESP-ROM:esp32c6-20220919
Build:Sep 19 2022
rst:0xc (SW_CPU),boot:0xc (SPI_FAST_FLASH_BOOT)
Saved PC:0x4001975a
SPIWP:0xee
mode:DIO, clock div:2
load:0x40875720,len:0x1260
load:0x4086c110,len:0xdc4
load:0x4086e610,len:0x300c
entry 0x4086c110
[     1][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x420068e2
[    12][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x420068a6
[    23][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_CTS (4) successfully set to 0x4200686a
[    34][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RTS (5) successfully set to 0x4200682e
[    46][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x420068e2
[    57][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x420068a6
[    68][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_CTS (4) successfully set to 0x4200686a
[    80][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RTS (5) successfully set to 0x4200682e
[    91][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RX (2) successfully set to 0x420068e2
[   102][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_TX (3) successfully set to 0x420068a6
[   114][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_CTS (4) successfully set to 0x4200686a
[   125][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type UART_RTS (5) successfully set to 0x4200682e
[   137][V][ZigbeeEP.cpp:18] ZigbeeEP(): Endpoint: 1
[   153][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 17 successfully set to type UART_RX (2) with bus 0x4080e164
[   164][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 16 successfully set to type UART_TX (3) with bus 0x4080e164
=========== Before Setup Start ===========
Chip Info:
------------------------------------------
  Model             : ESP32-C6
  Package           : 0
  Revision          : 0.01
  Cores             : 1
  CPU Frequency     : 160 MHz
  XTAL Frequency    : 40 MHz
  Features Bitfield : 0x00000052
  Embedded Flash    : No
  Embedded PSRAM    : No
  2.4GHz WiFi       : Yes
  Classic BT        : No
  BT Low Energy     : Yes
  IEEE 802.15.4     : Yes
------------------------------------------
INTERNAL Memory Info:
------------------------------------------
  Total Size        :   451312 B ( 440.7 KB)
  Free Bytes        :   412672 B ( 403.0 KB)
  Allocated Bytes   :    31960 B (  31.2 KB)
  Minimum Free Bytes:   412672 B ( 403.0 KB)
  Largest Free Block:   385012 B ( 376.0 KB)
------------------------------------------
Flash Info:
------------------------------------------
  Chip Size         :  8388608 B (8 MB)
  Block Size        :    65536 B (  64.0 KB)
  Sector Size       :     4096 B (   4.0 KB)
  Page Size         :      256 B (   0.2 KB)
  Bus Speed         : 40 MHz
  Bus Mode          : QIO
------------------------------------------
Partitions Info:
------------------------------------------
                nvs : addr: 0x00009000, size:    20.0 KB, type: DATA, subtype: NVS
            otadata : addr: 0x0000E000, size:     8.0 KB, type: DATA, subtype: OTA
               app0 : addr: 0x00010000, size:  3328.0 KB, type:  APP, subtype: OTA_0
               app1 : addr: 0x00350000, size:  3328.0 KB, type:  APP, subtype: OTA_1
             spiffs : addr: 0x00690000, size:  1388.0 KB, type: DATA, subtype: SPIFFS
         zb_storage : addr: 0x007EB000, size:    16.0 KB, type: DATA, subtype: FAT
             zb_fct : addr: 0x007EF000, size:     4.0 KB, type: DATA, subtype: FAT
           coredump : addr: 0x007F0000, size:    64.0 KB, type: DATA, subtype: COREDUMP
------------------------------------------
Software Info:
------------------------------------------
  Compile Date/Time : Mar  6 2025 14:49:34
  Compile Host OS   : windows
  ESP-IDF Version   : v5.4-561-gbcb3c32d3a-dirty
  Arduino Version   : 3.2.0
------------------------------------------
Board Info:
------------------------------------------
  Arduino Board     : ESP32C6_DEV
  Arduino Variant   : esp32c6
  Arduino FQBN      : esp32:esp32:esp32c6:JTAGAdapter=default,CDCOnBoot=default,PartitionScheme=zigbee_8MB,CPUFreq=160,FlashMode=qio,FlashFreq=80,FlashSize=8M,UploadSpeed=921600,DebugLevel=verbose,EraseFlash=all,ZigbeeMode=ed
============ Before Setup End ============
[   505][V][esp32-hal-uart.c:552] uartBegin(): UART0 baud(115200) Mode(800001c) rxPin(17) txPin(16)
[   513][V][esp32-hal-uart.c:656] uartBegin(): UART0 not installed. Starting installation
[   521][V][esp32-hal-uart.c:666] uartBegin(): UART0 RX FIFO full threshold set to 120 (value requested: 120 || FIFO Max = 128)
[   533][V][esp32-hal-uart.c:683] uartBegin(): Setting UART0 to use XTAL clock
[   540][V][esp32-hal-uart.c:738] uartBegin(): UART0 initialization done.
[   547][V][esp32-hal-uart.c:785] uartSetRxFIFOFull(): UART0 RX FIFO Full value set to 120 from a requested value of 120
Starting...
[   558][V][esp32-hal-periman.c:235] perimanSetBusDeinit(): Deinit function for type GPIO (1) successfully set to 0x42003aa0
[   570][V][esp32-hal-periman.c:160] perimanSetPinBus(): Pin 9 successfully set to type GPIO (1) with bus 0xa
[   580][D][ZigbeeCore.cpp:83] addEndpoint(): Endpoint: 1, Device ID: 0x000c
Starting Zigbee...
[   587][D][ZigbeeCore.cpp:126] zigbeeInit(): Initialize Zigbee stack
[   668][D][ZigbeeCore.cpp:133] zigbeeInit(): Register all Zigbee EPs in list
[   676][I][ZigbeeCore.cpp:141] zigbeeInit(): List of registered Zigbee EPs:
[   683][I][ZigbeeCore.cpp:143] zigbeeInit(): Device type: Simple Sensor device, Endpoint: 1, Device ID: 0x000c
[   701][V][ZigbeeCore.cpp:355] esp_zb_app_signal_handler(): ZDO signal: ZDO Config Ready (0x17), status: ESP_FAIL
[   712][I][ZigbeeCore.cpp:222] esp_zb_app_signal_handler(): Zigbee stack initialized
[  3071][I][ZigbeeCore.cpp:228] esp_zb_app_signal_handler(): Device started up in non factory-reset mode
[  3080][I][ZigbeeCore.cpp:241] esp_zb_app_signal_handler(): Device rebooted
[  3087][D][ZigbeeCore.cpp:482] searchBindings(): Requesting binding table for address 0xbf38
[  3096][D][ZigbeeCore.cpp:422] bindingTableCb(): Binding table callback for address 0xbf38 with status 0
[  3106][D][ZigbeeCore.cpp:425] bindingTableCb(): Binding table info: total 0, index 0, count 0
[  3114][D][ZigbeeCore.cpp:428] bindingTableCb(): No binding table entries found
Zigbee started successfully!
Connecting to network
Connected
Guru Meditation Error: Core  0 panic'ed (Load access fault). Exception was unhandled.

Core  0 register dump:
MEPC    : 0x420272d8  RA      : 0x4202e8f4  SP      : 0x4081d800  GP      : 0x4080e7d4  
TP      : 0x4081d8c0  T0      : 0x40030dca  T1      : 0x0000000f  T2      : 0x40822a54  
S0/FP   : 0x0000001e  S1      : 0x4081d828  A0      : 0x00000000  A1      : 0x00000000  
A2      : 0x0000ffff  A3      : 0x0000000d  A4      : 0x40822a64  A5      : 0x0000000d  
A6      : 0x00000004  A7      : 0x00000004  S2      : 0x00000001  S3      : 0x40810310  
S4      : 0x00000000  S5      : 0x00000000  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x00000014  T4      : 0x40815000  T5      : 0x40815000  T6      : 0x00000001  
MSTATUS : 0x00001881  MTVEC   : 0x40800001  MCAUSE  : 0x00000005  MTVAL   : 0x00000005  
MHARTID : 0x00000000  

Stack memory:
4081d800: 0x41200000 0x00000000 0x0000001e 0x4200ae18 0x00000001 0x420734f8 0x4080e164 0x4200375a
4081d820: 0x00000000 0x00000000 0x04020100 0x00000001 0x00000000 0x00000000 0x00000000 0x00000000
4081d840: 0x001e0000 0x0000000a 0x00000000 0x00000000 0x00000000 0x001e0000 0x00000000 0xffff0104
4081d860: 0x00000014 0x40815000 0x40815000 0x00000000 0x00000000 0x00000000 0x40815000 0x42005a96
4081d880: 0x00000000 0x00000000 0x00000000 0x4080836c 0x00000000 0x00000000 0x00000000 0x00000000
4081d8a0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5
4081d8c0: 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678 0x00000168 0xabba1234 0x0000015c 0x4081d760
4081d8e0: 0x00007757 0x40812ee4 0x40812ee4 0x4081d8dc 0x40812edc 0x00000018 0x408161cc 0x408161cc
4081d900: 0x4081d8dc 0x00000000 0x00000001 0x4081b8cc 0x706f6f6c 0x6b736154 0x00000000 0x00000000
4081d920: 0x4081d8c0 0x00000005 0x00000000 0x00000001 0x00000001 0x00000000 0x00000000 0x0006b9eb
4081d940: 0x00000000 0x40815c24 0x40815c8c 0x40815cf4 0x00000000 0x00000000 0x00000001 0x00000000
4081d960: 0x00000000 0x4081da48 0x42049b3c 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081d980: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081d9a0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081d9c0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081d9e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081da00: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081da20: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0xbaad5678 0x0000001c
4081da40: 0xabba1234 0x00000010 0x4081db28 0x00000000 0x00000000 0x4081da68 0xbaad5678 0x00000090
4081da60: 0xabba1234 0x00000084 0x00000000 0x4081dafc 0x00000000 0x00000000 0x00000000 0x00000000
4081da80: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081daa0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081dac0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081dae0: 0x00000000 0x00000000 0x00000000 0xbaad5678 0x00000028 0xabba1234 0x0000001c 0x4081db50
4081db00: 0x00000001 0x00000002 0x00000000 0x00000001 0x00000001 0x00000000 0xbaad5678 0x00000024
4081db20: 0xabba1234 0x00000018 0x00303436 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000
4081db40: 0xbaad5678 0x00000028 0xabba1234 0x0000001c 0x4081db7c 0x00000001 0x00000002 0x00000000
4081db60: 0x00000001 0x08000000 0x00000000 0xbaad5678 0x00000028 0xabba1234 0x0000001c 0x00000000
4081db80: 0x00000001 0x00000002 0x00000000 0x00000001 0x04000000 0x00000000 0xbaad5678 0x0000348c
4081dba0: 0xabba1234 0x00003480 0x00000000 0x00480008 0x00000001 0x00000000 0x00000000 0x00000000
4081dbc0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
4081dbe0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000



ELF file SHA256: dd417934c

Other Steps to Reproduce

Steps that led to this are:

• Connect ESP32C6 to the laptop
• Open the Analog Input Output example from the examples menu
• Compile and flash
• Add the device in Home Assistant

Here are my IDE settings

Tried this with an ESP32H2 and the same thing happened.
I'm using ZHA in HA and running Silicon Labs Multiprotocol firmware on the dongle.
I could not get the exception decoded using the decoder - I pasted it in and no output appeared.

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[MikaFromTheRoof]

I got exactly the same problem. Same Zigbee error "Guru Meditation Error: Core 0 panic'ed (Load access fault). Exception was unhandled." and same example I am using.

But my board is a DFRobot Beetle ESP32-C6

I found out, that everything works fine as soon as I comment out the line for the reporting configuration:

zbAnalogDevice.setAnalogInputReporting(0, 30, 10);

but I have no clue why this function call doesn't work. I would really like to keep it and use the reporting configuration.

Someone any ideas? Why is this function call even located after establishing zigbee connection? Does zigbee need to be connected for that?

[oli-the-kitty]

I can confirm that commenting this line out does prevent the crash. Decided to dig a little deeper.

In the Zigbee library, in the file src/ep/ZigbeeAnalog.cpp, in the function setAnalogInputReporting crash seems to occur on this line:

esp_zb_zcl_update_reporting_info(&reporting_info);

Just a few lines above, where the reporting_info is being prepared, I found what looks like a copy-paste error. Changing the line

reporting_info.cluster_id = ESP_ZB_ZCL_CLUSTER_ID_TEMP_MEASUREMENT;

to

reporting_info.cluster_id = ESP_ZB_ZCL_CLUSTER_ID_ANALOG_INPUT;

has fixed the crashing and reporting seems to work okay for me

[P-R-O-C-H-Y]

@oli-the-kitty Thank you for investigation and also for posting a fix. I am sorry for that copy-paste error.

[MikaFromTheRoof]

Changing the line

reporting_info.cluster_id = ESP_ZB_ZCL_CLUSTER_ID_TEMP_MEASUREMENT;

to

reporting_info.cluster_id = ESP_ZB_ZCL_CLUSTER_ID_ANALOG_INPUT;

has fixed the crashing and reporting seems to work okay for me

@oli-the-kitty May I ask you how you managed to test it with the changed line right away? I am guite new to github and would like to get it to work correctly in my Arduino IDE. Is that possible?

[oli-the-kitty]

Hi @MikaFromTheRoof, I just edited the local file on my laptop without doing editing in github. The library, in my case, was located under the following path:

%USERPROFILE%\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.2.0-RC1\libraries\Zigbee

but this will depend on your Arduino installation. Once I got it working, I made the change in github.

BTW welcome to github, I'm very new is well, this is literally the first issue and first pull request I ever did.

[MikaFromTheRoof]

@oli-the-kitty nice, then welcome to you too :-)

I am desperately looking for a community of other people tinkering with ESP32, zigbee and the arduino-esp32 library. Did you find any yet? Or is there just Github? I would really love to go deeper into those topics, but the code examples are few and as soon as you deviate too far from them stuff stops working quite often. Whenever I need help, I don't know where I could turn to...
In addition to that I couldn't find any good documentation for the zigbee part of the arduino-esp32 library.

How are you testing your selfmade zigbee devices? I integrate them into my Home Assistant via Zigbee2MQTT and always wonder, if my code / the zigbee on the ESP32 or Zigbee2MQTT is the problem, whenever something isn't working properly.
Which ESP32 / zigbee projects are you currently working on? How do you get along?

At the moment I am trying to combine two zigbee endpoints into one device: a dimmable light endpoint and a analog value endpoint to expose the sensor values of a simple photoresistor (light measure). But I can't even get the analog value example code working... Zigbee2MQTT finds the endpoint, but does not receive or "understand" any values...

Apart from that, a quick question: do you know if there is a function for sending personal messages on Github?