Troubleshooting ESP32 OTA updating

ESPHome
1

My HA setup has a Olimex ESP32-POE-ISO-EA that I flashed the ESPHome firmware onto to use as a Bluetooth (BLE) Proxy. But I have not been able to update it since through OTA.

The error I get is Connection refused. It’s on a different network subnet (192.168.1.0/24) than Home Assistant (192.168.0.0/24) with a firewall in between, but I’m after allowing all traffic between both, I’m not able to figure out what the problem is. I’m thinking there’s a different reason why it can’t connect.

This is the log from the ESPHome update feature’s console screen:

U

pdating /config/esphome/olimex-esp32-poe-iso-039e18.yaml
------------------------------------------------------------

INFO ESPHome 2024.11.1
INFO Reading configuration /config/esphome/olimex-esp32-poe-iso-039e18.yaml...
WARNING GPIO12 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.html#why-am-i-getting-a-warning-about-strapping-pins
INFO Generating C++ source...
INFO Compiling app...
Processing olimex-esp32-poe-iso-039e18 (board: esp32-poe-iso; framework: espidf; platform: platformio/[email protected])
--------------------------------------------------------------------------------
HARDWARE: ESP32 240MHz, 320KB RAM, 4MB Flash
 - framework-espidf @ 3.40408.0 (4.4.8) 
 - tool-cmake @ 3.16.4 
 - tool-ninja @ 1.7.1 
 - toolchain-esp32ulp @ 2.35.0-20220830 
 - toolchain-xtensa-esp32 @ 8.4.0+2021r2-patch5
Reading CMake configuration...
Dependency Graph
|-- noise-c @ 0.1.6
RAM:   [==        ]  15.5% (used 50632 bytes from 327680 bytes)
Flash: [======    ]  58.9% (used 1080621 bytes from 1835008 bytes)
========================= [SUCCESS] Took 14.48 seconds =========================
INFO Successfully compiled program.
INFO Resolving IP address of olimex-esp32-poe-iso-039e18.local in mDNS
INFO Connecting to 192.168.1.104 port 3232...
ERROR Connecting to 192.168.1.104 port 3232 failed: [Errno 111] Connection refused
ERROR Connection failed.
= [ERROR] /config/esphome/olimex-esp32-poe-iso-039e18.yaml =



======================== [SUMMARY] ========================
  - /config/esphome/olimex-esp32-poe-iso-039e18.yaml: FAILED

The only info I have in the secrets yaml is the wifi password, which it shouldn’t even use as it should use the LAN (with POE) connection.

2

The POE ethernet port needs to be specified in YAML

esphome:
  name: esp32-evb
  platform: ESP32
  board: esp32-evb

# Enable logging
logger:

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

ethernet:
  type: LAN8720
  mdc_pin: GPIO23
  mdio_pin: GPIO18
  clk_mode: GPIO0_IN
  phy_addr: 0
  manual_ip:
    static_ip: 192.168.1.10
    gateway: 192.168.1.1
    subnet: 255.255.252.0

~~~~~

PS: not sue if I have exactly the same (i use it in the office and went home for the weekend), but I do have an ESP olimex with POE, I think it is the EVB :thinking:

And, as it says…it is OTA…meaning Over The Air (=not wifi)
The only way you can update is downloading the bins and then upload it on the web-interface (or use serial)

1 Like
3

Thanks for the advice but I’m not sure which YAML I need to adjust for this. When I click “Update All”, it doesn’t ever mention it.

If I click on Edit on the “card”, I get this config (excluding key):

substitutions:
  name: olimex-esp32-poe-iso-039e18
  friendly_name: Bluetooth Proxy 039e18
packages:
  esphome.bluetooth-proxy: github://esphome/bluetooth-proxies/olimex/olimex-esp32-poe-iso.yaml@main
esphome:
  name: ${name}
  name_add_mac_suffix: false
  friendly_name: ${friendly_name}
api:
  encryption:
    key:
4

This is the yaml I used months ago to flash the firmware before I had it connected over the network. To be clear, it works, I just can’t update it using OTA:

esphome:
  project:
    name: esphome.bluetooth-proxy
    version: dev
  friendly_name: Bluetooth Proxy
  min_version: 2024.6.0
  name_add_mac_suffix: true
  name: olimex-esp32-poe-iso

esp32:
  board: esp32-poe-iso
  framework:
    type: esp-idf

ethernet:
  type: LAN8720
  mdc_pin: GPIO23
  mdio_pin: GPIO18
  clk_mode: GPIO17_OUT
  phy_addr: 0
  power_pin: GPIO12

api:
  encryption:
    key:
logger:

esp32_ble_tracker:
  scan_parameters:
    interval: 1100ms
    window: 1100ms
    active: true

bluetooth_proxy:
  active: true

button:
  - platform: safe_mode
    id: button_safe_mode
    name: Safe Mode Boot

  - platform: factory_reset
    id: factory_reset_btn
    name: Factory reset

ota:
  - platform: http_request
    id: ota_http_request

update:
  - platform: http_request
    id: update_http_request
    name: Firmware
    source: https://firmware.esphome.io/bluetooth-proxy/olimex-esp32-poe-iso/manifest.json

http_request:

dashboard_import:
  package_import_url: github://esphome/bluetooth-proxies/olimex/olimex-esp32-poe-iso.yaml@main
5

Add this to yaml:

web_server:
  port: 80

Compile using manual download
image
Then use web server on http://192.168.1.x to upload the compiled bins
image

1 Like
6

Thanks for the tip, but the web server doesn’t seem to respond. I get a “connection refused” error using Developer Options → Network, in the web browser. I’ve disabled HTTPS-mode to make sure it doesn’t redirect but it doesn’t matter.