ERROR Could not find auto generated code begin in file, either delete the main sketch file or insert the comment again.

[spitfire]

The problem

I'm getting: ERROR Could not find auto generated code begin in file, either delete the main sketch file or insert the comment again. I used to be able to compile it with versions <= 2023.4.0, but now it is failing.

Which version of ESPHome has the issue?

2023.4.1

What type of installation are you using?

Home Assistant Add-on

Which version of Home Assistant has the issue?

2023.4.6

What platform are you using?

ESP32

Board

esp32dev

Component causing the issue

No response

Example YAML snippet

esphome:
  name: foxess-inverter
  includes:
    - foxess_t_series.h

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:
  level: VERBOSE
  baud_rate: 0

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

ota:
  password: !secret esphome_ota

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  domain: !secret domain

  ap:
    ssid: "Inverter Fallback Hotspot"
    password: !secret esphome_ota

captive_portal:

#bluetooth_proxy:
  #active: true

uart:
  id: uart_bus
  tx_pin: 16
  rx_pin: 17
  baud_rate: 9600
  debug:

button:
  - platform: restart
    name: "Foxess inverter restart"

switch:
  - platform: gpio
    pin: 4
    name: "T-Series sending mode" #if "on" reading from inverter doesn't work!
    internal: true #switch is not exposed to HA frontend, should you ever need to write to the inverter, just comment this line

text_sensor:
  - platform: template
    name: "T-Series Inverter Mode"
    id: "inverter_mode_text_sensor"
    icon: mdi:solar-power-variant

sensor:
- platform: custom
  lambda: |-
    auto foxesssensors = new foxesscomponent(id(uart_bus));
    App.register_component(foxesssensors);
    return {\
    foxesssensors->grid_power, \
    foxesssensors->generation_power, \
    foxesssensors->loads_power, \
    foxesssensors->grid_voltage_r, \
    foxesssensors->grid_current_r, \
    foxesssensors->grid_frequency_r, \
    foxesssensors->grid_power_r, \
    foxesssensors->grid_voltage_s, \
    foxesssensors->grid_current_s, \
    foxesssensors->grid_frequency_s, \
    foxesssensors->grid_power_s, \
    foxesssensors->grid_voltage_T, \
    foxesssensors->grid_current_T, \
    foxesssensors->grid_frequency_T, \
    foxesssensors->grid_power_T, \
    foxesssensors->pv1_voltage, \
    foxesssensors->pv1_current, \
    foxesssensors->pv2_voltage, \
    foxesssensors->pv2_current, \
    foxesssensors->pv3_voltage, \
    foxesssensors->pv3_current, \
    foxesssensors->pv4_voltage, \
    foxesssensors->pv4_current, \
    foxesssensors->boost_temperature, \
    foxesssensors->inverter_temperature, \
    foxesssensors->ambient_temperature, \
    foxesssensors->today_yield, \
    foxesssensors->generation_total, \
    foxesssensors->pv1_power, \
    foxesssensors->pv2_power, \
    foxesssensors->pv3_power, \
    foxesssensors->pv4_power, \
    foxesssensors->inverter_state\
    };

  sensors:
  - name: "T-Series Grid Power"
    id: "grid_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt

  - name: "T-Series Generation Power"
    id: "generation_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt

  - name: "T-Series loads Power"
    id: "loads_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt

  - name: "T-Series Grid Voltage R"
    id: "grid_voltage_r"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1
    - throttle: 1h

  - name: "T-Series Grid Current R"
    id: "grid_current_r"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1
    - throttle: 1h

  - name: "T-Series Grid Frequency R"
    id: "grid_Frequency_r"
    unit_of_measurement: Hz
    accuracy_decimals: 2
    icon: mdi:sine-wave
    filters:
    - multiply: 0.01
    - throttle: 1h

  - name: "T-Series Grid Power R"
    id: "grid_power_r"
    unit_of_measurement: W
    icon: mdi:lightning-bolt

  - name: "T-Series Grid Voltage S"
    id: "grid_voltage_s"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1
    - throttle: 1h

  - name: "T-Series Grid Current S"
    id: "grid_current_s"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1
    - throttle: 1h

  - name: "T-Series Grid Frequency S"
    id: "grid_Frequency_s"
    unit_of_measurement: Hz
    accuracy_decimals: 2
    icon: mdi:sine-wave
    filters:
    - multiply: 0.01
    - throttle: 1h

  - name: "T-Series Grid Power S"
    id: "grid_power_s"
    unit_of_measurement: W
    icon: mdi:lightning-bolt

  - name: "T-Series Grid Voltage T"
    id: "grid_voltage_T"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1
    - throttle: 1h

  - name: "T-Series Grid Current T"
    id: "grid_current_t"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1
    - throttle: 1h

  - name: "T-Series Grid Frequency T"
    id: "grid_Frequency_t"
    unit_of_measurement: Hz
    accuracy_decimals: 2
    icon: mdi:sine-wave
    filters:
    - multiply: 0.01
    - throttle: 1h

  - name: "T-Series Grid Power T"
    id: "grid_power_t"
    unit_of_measurement: W
    icon: mdi:lightning-bolt

  - name: "T-Series PV1 Voltage"
    id: "pv1_voltage"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1

  - name: "T-Series PV1 Current"
    id: "pv1_current"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1

  - name: "T-Series PV2 Voltage"
    id: "pv2_voltage"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1

  - name: "T-Series PV2 Current"
    id: "pv2_current"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1

  - name: "T-Series PV3 Voltage" #only relevant for models T8dual-T12dual and T15-T25
    id: "pv3_voltage"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1

  - name: "T-Series PV3 Current" #only relevant for models T8dual-T12dual and T15-T25
    id: "pv3_current"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1

  - name: "T-Series PV4 Voltage" #only relevant for models T8dual-T12dual and T15-T25
    id: "pv4_voltage"
    unit_of_measurement: V
    accuracy_decimals: 1
    icon: mdi:flash
    filters:
    - multiply: 0.1

  - name: "T-Series PV4 Current" #only relevant for models T8dual-T12dual and T15-T25
    id: "pv4_current"
    unit_of_measurement: A
    accuracy_decimals: 1
    icon: mdi:current-ac
    filters:
    - multiply: 0.1

  - name: "T-Series Boost Temperature" #boost temperature and inverter temperature seem to be always the same
    id: "boost_temperature"
    unit_of_measurement: °C
    filters:
    - throttle: 10min

  - name: "T-Series Inverter Temperature" #boost temperature and inverter temperature seem to be always the same
    id: "inverter_temperature"
    unit_of_measurement: °C
    filters:
    - throttle: 10min

  - name: "T-Series Ambient Temperature"
    id: "ambient_temperature"
    unit_of_measurement: °C
    filters:
    - throttle: 10min

  - name: "T-Series Today Yield"
    id: "today_yield"
    unit_of_measurement: kWh
    accuracy_decimals: 1
    icon: mdi:solar-power
    filters:
    - multiply: 0.1

  - name: "T-Series Generation Total"
    id: "generation_total"
    unit_of_measurement: kWh
    device_class: energy #for use in energy dashboard
    state_class: total_increasing #for use in energy dashboard
    accuracy_decimals: 1
    icon: mdi:solar-power
    filters:
    - multiply: 0.1

  - name: "T-Series PV1 Power" #rs485 comm says this is always 0W, so this is calculated in the .h file by voltage*current
    id: "pv1_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt
    accuracy_decimals: 1

  - name: "T-Series PV2 Power" #rs485 comm says this is always 0W, so this is calculated in the .h file by voltage*current
    id: "pv2_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt
    accuracy_decimals: 1

  - name: "T-Series PV3 Power" #rs485 comm says this is always 0W, so this is calculated in the .h file by voltage*current
    id: "pv3_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt
    accuracy_decimals: 1

  - name: "T-Series PV4 Power" #rs485 comm says this is always 0W, so this is calculated in the .h file by voltage*current
    id: "pv4_power"
    unit_of_measurement: W
    icon: mdi:lightning-bolt
    accuracy_decimals: 1

  - name: "T-Series Inverter State"
    id: "inverter_state"
    internal: true
    on_value:
      then:
        - lambda: |-
            if(x==0) {
              id(inverter_mode_text_sensor).publish_state("Offline");
            }
            else if(x==1) {
              id(inverter_mode_text_sensor).publish_state("Online");
            }
            else if(x==2) {
              id(inverter_mode_text_sensor).publish_state("Error");
            }
            else {
              id(inverter_mode_text_sensor).publish_state("Waiting for response...");
            }

Anything in the logs that might be useful for us?

No response

Additional information

The referenced/included .h file can be found at https://github.com/assembly12/Foxess-T-series-ESPHome-Home-Assistant/blob/main/foxess_t_series.h and also has not been changed.

[ssieb]

You didn't include the logs. If you haven't modified the main.cpp file, then try a clean build.

[spitfire]

@ssieb which logs should I include? How do I start a clean build?

[ssieb]

The compile logs, wherever you're seeing that error message. In the menu, there's an option to clean the build files.

[spitfire]

Tried cleaning build files, the issue persists. Here's the log output for installation:

INFO Reading configuration /config/esphome/foxess-inverter.yaml...
WARNING GPIO4 is a Strapping PIN and should be avoided.
Attaching external pullup/down resistors to strapping pins can cause unexpected failures.
See https://esphome.io/guides/faq.html#why-am-i-getting-a-warning-about-strapping-pins
INFO Generating C++ source...
ERROR Could not find auto generated code begin in file, either delete the main sketch file or insert the comment again.

[spitfire]

@ssieb Any idea what that is? my other ESPHome devices seem to be updating fine, so it's probably a matter of some component used in this one.

[huenemeca]

I have 2 devices doing this now.

[ssieb]

@spitfire do you use the custom component in any other devices? Can you attach the main.cpp here if you can find it? I think the data directory is accessible from the HA base OS. @huenemeca are you using any custom components in those devices? Same request as well for the main.cpp file.

[spitfire]

@spitfire do you use the custom component in any other devices? Can you attach the main.cpp here if you can find it? I think the data directory is accessible from the HA base OS. @huenemeca are you using any custom components in those devices? Same request as well for the main.cpp file.

All that I have in that project is the yaml file with content pasted in bug description along with the header (.h) file (from https://github.com/assembly12/Foxess-T-series-ESPHome-Home-Assistant/blob/main/foxess_t_series.h) next to it, there is no .cpp file in there (the only C++ code is in the yaml, which I'm attaching here: foxess-inverter.yaml.zip). This project used to compile with ESPHome 2023.4.*

[ssieb]

You have to get it from the build directory.

[spitfire]

It doesn't even create one. After I've cleaned last build files (as suggested earlier) it doesn't create a new one. All other projects' files are there:

homeassistant01# pwd
/usr/share/hassio/addons/data/5c53de3b_esphome
homeassistant01# ls -l
total 4
drwxr-xr-x 1 root root 20 Apr 26 16:10 cache
drwxr-xr-x 1 root root 38 May 25 13:13 esp32-gabinet
drwxr-xr-x 1 root root 38 May 25 13:13 esp32-kotlownia
-rw------- 1 root root  2 May 29 03:24 options.json
drwxr-xr-x 1 root root 38 May 25 13:14 poziomwody-test
drwxr-xr-x 1 root root 38 May 25 13:14 t-can485-foxess
drwxr-xr-x 1 root root 38 May 29 09:41 ttgo01
drwxr-xr-x 1 root root 38 May 25 13:14 ttgo-dongle01
drwxr-xr-x 1 root root 38 May 29 09:42 ttgo-tdisplay-s3-01
drwxr-xr-x 1 root root 38 Apr 27 13:29 wodomierz

I guess it fails when generating source.

[spitfire]

Anything else I can check?

[JohnBaumb]

I am also getting this error with this very simple config:

substitutions:
  device_name: porch-light

esphome:
  name: porch-light
  platform: ESP8266
  board: esp01_1m

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  manual_ip:
    static_ip: 10.0.0.208
    gateway: 10.0.0.1
    subnet: 255.255.255.0
    dns1: 10.0.0.60
    dns2: 8.8.8.8
  #fast_connect: true
  ap:
    ssid: "Porch-Light Fallback Hotspot"
    password: !secret wifi_password

# Enable logging
logger:
  # default is DEBUG
  #level: VERBOSE

# Enable Home Assistant API
api:

ota:

web_server:

switch:
  - platform: restart
    name: "Porch Light Restart"

  - name: "Porch Light"
    platform: gpio
    pin: GPIO4
    id: relay
    #restore_mode: ALWAYS_OFF

sensor:
  - platform: uptime
    name: "Porch Light Uptime"
    update_interval: 60s

  - platform: wifi_signal
    name: "Porch Light WiFi Signal"
    update_interval: 60s

binary_sensor:
  - platform: gpio
    name: Porch Light Switch
    pin: GPIO5
    on_press:
      then:
        - switch.turn_on: relay
    on_release:
      then:
        - switch.turn_off: relay

I've deleted all additional files besides the yaml in an effort to diagnose, and clean build as well, no change.

EDIT: Renaming Hostname in the UI allowed me to compile and flash, but cannot rename back to the old name afterwards.

[spitfire]

Still doesn't work, and hasn't been for 3 months now. Anything else I can try?

[1nterlud3]

I also got this error. Any fixes or causes? It seams that the generation crashes.

> INFO ESPHome 2023.10.0
> INFO Reading configuration /config/esphome/inside-garage.yaml...
> INFO Generating C++ source...
> ERROR Could not find auto generated code begin in file, either delete the main sketch file or insert the comment again.

[spitfire]

While cleaning the build files didn't help renaming hostname in ESPHome did ¯_(ツ)_/¯

[noispe]

Now I also got this error, but I was able to fix it without changing the hostname. I think my problem started with switching different versions of ESP-IDF.

Cleaning the build files has left some remains inside the build directory. Deleting the whole subdirectory of the device inside the build directory did the magic - my device now compiles fine again.

e.g.: build path: esphome/.esphome/build device name: foxess-inverter

-> delete directory (and everything inside): esphome/.esphome/build/foxess-inverter