Issue while change Bord

[Zeusur]

Hello,

I changed the Bord and CAN definition like this:

esphome:
  name: esp32-poe-technik
  friendly_name: ESP32-PoE Technik

esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: esp-idf

# Enable logging
logger:
  level: INFO
  baud_rate: 0
  hardware_uart: UART1

# Enable Home Assistant API
api:
  encryption:
    key: !secret api_encryption_key

ota:
  platform: esphome
  password: !secret ota_password

substitutions:
  entity_room_temperature: "sensor.durchschnittstemperatur_haus_ohne_keller"
  entity_humidity: "sensor.durchschnitt_luftfeuchtigkeit_haus"
  timezone: "Europe/Berlin"

#########################################
#                                       #
#   SPI configuration                   #
#                                       #
#########################################
# spi:
#   id: McpSpi
#   clk_pin: GPIO14
#   mosi_pin: GPIO13
#   miso_pin: GPIO4

#########################################
#                                       #
#   CAN configuration                   #
#                                       #
#########################################
# canbus:
#   - id: !extend wp_can
#     platform: mcp2515
#     spi_id: McpSpi
#     cs_pin: GPIO15
#     bit_rate: 20kbps
#     clock: 8MHz        # 8MHz or 16MHz depending on the value of the crystal on your MCP2515
#     data_rate: 4MHz    # 8Mhz (4MHz, 2MHz or 1MHz in case you get CAN bus errors)

canbus:
  - platform: esp32_can
    id: my_can
    tx_pin: GPIO15
    rx_pin: GPIO16
    # can_id: 0x680
    use_extended_id: false
    bit_rate: 20kbps

#########################################
#                                       #
#   Buttons                             #
#                                       #
#########################################
button:
  - platform: restart
    name: "Restart ESP32-PoE Technik"

#########################################
#                                       #
#   WiFi Configuration                  #
#                                       #
#########################################
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "ESP32-PoE Fallback Hotspot"
    password: !secret fallback_password

#########################################
#                                       #
#   Ethernet Konfiguration              #
#                                       #
#########################################
#ethernet:
#  type: LAN8720
#  mdc_pin: GPIO23
#  mdio_pin: GPIO18
#  clk:
#    pin: GPIO0
#    mode: CLK_OUT
#  phy_addr: 0
#  power_pin: GPIO12

#########################################
#                                       #
#   Packages                            #
#                                       #
#########################################
packages:
# thz304: !include OneESP32ToRuleThemAll/yaml/thz304.yaml
# thz404: !include OneESP32ToRuleThemAll/yaml/thz404.yaml
  thz504: !include OneESP32ToRuleThemAll/yaml/thz504.yaml
# thz55eco: !include OneESP32ToRuleThemAll/yaml/thz5_5_eco.yaml
# ttf07: !include OneESP32ToRuleThemAll/yaml/ttf07.yaml
# wpl13: !include OneESP32ToRuleThemAll/yaml/wpl13.yaml
# energymeter: !include OneESP32ToRuleThemAll/yaml/features/energymeter.yaml
# evu: !include OneESP32ToRuleThemAll/yaml/features/evu.yaml
# watermeter: !include OneESP32ToRuleThemAll/yaml/features/watermeter.yaml
# kondensatpumpe: !include OneESP32ToRuleThemAll/yaml/features/kondensatpumpe.yaml
# sgready: !include OneESP32ToRuleThemAll/yaml/features/sg_ready.yaml

# To opt-in to community stats, uncomment the line below.
# This sends anonymous data to an MQTT server:
# - Events: Triggered by switch/setting changes.
# - Telemetry: Every 15 minutes for standard sensors (custom sensors are NEVER exposed!).
# A unique Device ID will be visible as a sensor. This can be used to access the Grafana dashboard and compare your data with the community.
# analytics: !include { file: OneESP32ToRuleThemAll/yaml/features/analytics.yaml, vars: { district: '"Landkreis"' }} <-- remember to change the district

I got this Issue while compiling:

INFO ESPHome 2026.2.4
INFO Reading configuration /config/esphome/esp32-poe-technik.yaml...
Failed config

canbus.unknown: [source /config/esphome/OneESP32ToRuleThemAll/yaml/core.yaml:120]

  'canbus' requires a 'platform' key but it was not specified.
  id: wp_can
  can_id: 0x6a2
  use_extended_id: False
  on_frame: 
    - can_id: 0
      can_id_mask: 0
      then: 
        - lambda: |-
            ESP_LOGD("CAN", "Can message received with CANId 0x%04lx", can_id);
            const auto [property, value] = processCanMessage(x);
            const auto canMember = getCanMemberByCanId(can_id);
            if(canMember) {

[Sulik7761]

Hello
I think the canbus declaration is wrong here mine:

[Nebnenut]

I think there's something wrong with the indentation. This is how it looks for me.

[Zeusur]

First error while building that bit_rate is not allowed.

Without I can build but while working I got the followin Error:

INFO ESPHome 2026.2.4
INFO Reading configuration /config/esphome/esp32-poe-technik.yaml...
WARNING GPIO15 is a strapping PIN and should only be used for I/O with care.
Attaching external pullup/down resistors to strapping pins can cause unexpected failures.
See https://esphome.io/guides/faq/#why-am-i-getting-a-warning-about-strapping-pins
WARNING WiFi AP is configured but neither captive_portal nor web_server is enabled. The AP will not be usable for configuration or monitoring. Add 'captive_portal:' or 'web_server:' to your configuration.
INFO Starting log output from 192.168.188.105 using esphome API
INFO Successfully resolved esp32-poe-technik @ 192.168.188.105 in 0.000s
INFO Successfully connected to esp32-poe-technik @ 192.168.188.105 in 0.085s
INFO Successful handshake with esp32-poe-technik @ 192.168.188.105 in 0.058s
[09:53:01.996][I][app:215]: ESPHome version 2026.2.4 compiled on 2026-03-14 12:22:26 +0100
[09:53:02.046][I][app:222]: ESP32 Chip: ESP32-S3 rev0.2, 2 core(s)
[09:53:02.055][E][component:255]: canbus is marked FAILED: unspecified

My Bord is the Waveshare Industrial ESP32-S3 Control Board with RS485 and CAN Communication [https://amzn.to/4scTlDk from the article.

[Nebnenut]

Are you using subfolders to test this? If so, I made that mistake too. The board is working.

It's best to download everything again. Perhaps a file isn't up to date.

[Nebnenut]

Clear your cache!! Try again!

[Sulik7761]

I use also this board without issues.

clear built files
git pull ti check you have latest
check your yaml configuration indentation

Gpio 15 is not straping pin on this board i think you have the wrong template maybe.

[Zeusur]

Clear your cache!! Try again!

Everything cleared but no change.

with Baudrate:

INFO ESPHome 2026.2.4
INFO Reading configuration /config/esphome/esp32-poe-technik.yaml...
WARNING GPIO15 is a strapping PIN and should only be used for I/O with care.
Attaching external pullup/down resistors to strapping pins can cause unexpected failures.
See https://esphome.io/guides/faq/#why-am-i-getting-a-warning-about-strapping-pins
Failed config

canbus.esp32_can: [source /config/esphome/esp32-poe-technik.yaml:48]
  id: wp_can
  can_id: 0x6a2
  use_extended_id: False
  on_frame: 
    - can_id: 0
      can_id_mask: 0
      then: 
        - lambda: |-
            ESP_LOGD("CAN", "Can message received with CANId 0x%04lx", can_id);
            const auto [property, value] = processCanMessage(x);
            const auto canMember = getCanMemberByCanId(can_id);
            if(canMember) {
              auto callback = CallbackHandler::instance().getCallback(std::make_pair(canMember->get(),property));
              callback(value);
            } else {
              ESP_LOGD("CAN", "No CANMember with CANId 0x%04lx available.", can_id);
            }
  platform: esp32_can
  tx_pin: GPIO15
  rx_pin: GPIO16
  
  Bit rate 20KBPS is not supported on ESP32.
  bit_rate: 20kbps
  rx_queue_len: 512
  tx_queue_len: 64

Without CAN is not working.

Bord and wiring are ok, because https://github.com/bullitt186/ha-stiebel-control is working. but I want to change to this project.

[Nebnenut]

I had the same error, please clean the build files from your device:

Post your results here!

After them, compile. This process takes 5-7 minutes.

[Zeusur]

I had the same error, please clean the build files from your device:

Post your results here!

After them, compile. This process takes 5-7 minutes.

I still have cleaned all files.

Do you have with or without baudrate?

[Sulik7761]

You just need this for CAN if you use the project without modification and the waveshare device. You need same order and layout.

Also check here

You should not get pin or speed issues with the proper setting of the chip.

Can you share a picture of your yaml declaration?

[kr0ner]

Problem here is that you redefine the can ... you need to extend it
By commenting the canbus out you removed half the settings in the downstream yamls ;)

# canbus:
#   - id: !extend wp_can
#     platform: mcp2515
#     spi_id: McpSpi
#     cs_pin: GPIO15
#     bit_rate: 20kbps
#     clock: 8MHz        # 8MHz or 16MHz depending on the value of the crystal on your MCP2515
#     data_rate: 4MHz    # 8Mhz (4MHz, 2MHz or 1MHz in case you get CAN bus errors)

canbus:
  - platform: esp32_can <-- -either rename to wp_can and use !extend or use the settings above
    id: my_can
    tx_pin: GPIO15
    rx_pin: GPIO16
    # can_id: 0x680
    use_extended_id: false
    bit_rate: 20kbps

[kr0ner]

20kbps is supported by your S3 board (https://github.com/esphome/esphome/blob/dev/esphome/components/esp32_can/canbus.py#L78)

CAN_SPEEDS_ESP32_S2 = {
    "1KBPS": CanSpeed.CAN_1KBPS,
    "5KBPS": CanSpeed.CAN_5KBPS,
    "10KBPS": CanSpeed.CAN_10KBPS,
    "12K5BPS": CanSpeed.CAN_12K5BPS,
    "16KBPS": CanSpeed.CAN_16KBPS,
    "20KBPS": CanSpeed.CAN_20KBPS,       <------------- here it is
    **CAN_SPEEDS_ESP32,
}

CAN_SPEEDS_ESP32_S3 = {**CAN_SPEEDS_ESP32_S2}    <-------------- this is your board
CAN_SPEEDS_ESP32_C3 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_C5 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_C6 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_C61 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_H2 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_P4 = {**CAN_SPEEDS_ESP32_S2}

CAN_SPEEDS = {
    VARIANT_ESP32: CAN_SPEEDS_ESP32,
    VARIANT_ESP32C3: CAN_SPEEDS_ESP32_C3,
    VARIANT_ESP32C5: CAN_SPEEDS_ESP32_C5,
    VARIANT_ESP32C6: CAN_SPEEDS_ESP32_C6,
    VARIANT_ESP32C61: CAN_SPEEDS_ESP32_C61,
    VARIANT_ESP32H2: CAN_SPEEDS_ESP32_H2,
    VARIANT_ESP32P4: CAN_SPEEDS_ESP32_P4,
    VARIANT_ESP32S2: CAN_SPEEDS_ESP32_S2,
    VARIANT_ESP32S3: CAN_SPEEDS_ESP32_S3,
}

What does git log show as topmost commit?

[Zeusur]

I use also this board without issues.

clear built files
git pull ti check you have latest
check your yaml configuration indentation

Gpio 15 is not straping pin on this board i think you have the wrong template maybe.

can you please post your code?

At the moment I got every time the same issues.

[kr0ner]

Please check again that you've followed the installation instructions correctly. Did you clone the repo or did you manually copy the files? The OneESP32ToRuleThemAll folder needs to be below the esphome folder and the yaml file you have posted needs to be in esphome folder. I dont know why, but the file is not used ... so even if you would empty it you will most likely get the same error. I've tried your file and it compiles.

[Zeusur]

Please check again that you've followed the installation instructions correctly. Did you clone the repo or did you manually copy the files? The OneESP32ToRuleThemAll folder needs to be below the esphome folder and the yaml file you have posted needs to be in esphome folder. I dont know why, but the file is not used ... so even if you would empty it you will most likely get the same error. I've tried your file and it compiles.

I did everything like in the Doku.

Thank you for your tries but I think everything is fine.