Is the splitter mandatory?

[jameslouiz]

Im in the process of setup but I don't have a splitter yet. Is the splitter absolutely mandatory? Can the boiler be controlled by plugging the esp32-LIN adapter directly or does the control panel have to be connected?

I've also configured it to use different pins from RX/TX as I was having issues with logging over USB when using those pins.

Currently the control panel is not connected but im not seeing any errors from my LINbus setup. Here are my logs:

  [logger:185]: Logger:
  [14:43:51][C][logger:186]:   Level: DEBUG
  [14:43:51][C][logger:188]:   Log Baud Rate: 115200
  [14:43:51][C][logger:189]:   Hardware UART: UART0
  [14:43:51][C][uart.arduino_esp32:137]: UART Bus 1:
  [14:43:51][C][uart.arduino_esp32:138]:   TX Pin: GPIO27
  [14:43:51][C][uart.arduino_esp32:139]:   RX Pin: GPIO25
  [14:43:51][C][uart.arduino_esp32:141]:   RX Buffer Size: 256
  [14:43:51][C][uart.arduino_esp32:143]:   Baud Rate: 9600 baud
  [14:43:51][C][uart.arduino_esp32:144]:   Data Bits: 8
  [14:43:51][C][uart.arduino_esp32:145]:   Parity: NONE
  [14:43:51][C][uart.arduino_esp32:146]:   Stop bits: 2
  [14:43:51][C][gpio.output:010]: GPIO Binary Output:
  [14:43:51][C][gpio.output:011]:   Pin: GPIO2
  [14:43:51][C][light:103]: Light 'status_led'
  [14:43:51][C][truma_inetbox.LinBusListener:032]: LinBusListener:
  [14:43:51][C][truma_inetbox.LinBusListener:035]:   Update Interval: 0.5s
  [14:43:51][C][truma_inetbox.LinBusListener:036]:   LIN checksum Version: 2
  [14:43:51][C][truma_inetbox.LinBusListener:037]:   Observer mode: NO
  [14:43:51][C][truma_inetbox.cpplus_binary_sensor:019]: Truma CP Plus Binary Sensor 'CP Plus alive'
  [14:43:51][C][truma_inetbox.sensor:049]: Truma Sensor 'Current Room Temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   Device Class: 'temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   State Class: 'measurement'
  [14:43:51][C][truma_inetbox.sensor:049]:   Unit of Measurement: '°C'
  [14:43:51][C][truma_inetbox.sensor:049]:   Accuracy Decimals: 1
  [14:43:51][C][truma_inetbox.sensor:049]:   Icon: 'mdi:thermometer'
  [14:43:51][C][truma_inetbox.sensor:050]:   Type 'CURRENT_ROOM_TEMPERATURE'
  [14:43:51][C][truma_inetbox.sensor:049]: Truma Sensor 'Current Water Temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   Device Class: 'temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   State Class: 'measurement'
  [14:43:51][C][truma_inetbox.sensor:049]:   Unit of Measurement: '°C'
  [14:43:51][C][truma_inetbox.sensor:049]:   Accuracy Decimals: 0
  [14:43:51][C][truma_inetbox.sensor:049]:   Icon: 'mdi:thermometer'
  [14:43:51][C][truma_inetbox.sensor:050]:   Type 'CURRENT_WATER_TEMPERATURE'
  [14:43:51][C][truma_inetbox.sensor:049]: Truma Sensor 'Target Room Temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   Device Class: 'temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   State Class: 'measurement'
  [14:43:51][C][truma_inetbox.sensor:049]:   Unit of Measurement: '°C'
  [14:43:51][C][truma_inetbox.sensor:049]:   Accuracy Decimals: 0
  [14:43:51][C][truma_inetbox.sensor:049]:   Icon: 'mdi:thermometer'
  [14:43:51][C][truma_inetbox.sensor:050]:   Type 'TARGET_ROOM_TEMPERATURE'
  [14:43:51][C][truma_inetbox.sensor:049]: Truma Sensor 'Target Water Temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   Device Class: 'temperature'
  [14:43:51][C][truma_inetbox.sensor:049]:   State Class: 'measurement'
  [14:43:51][C][truma_inetbox.sensor:049]:   Unit of Measurement: '°C'
  [14:43:51][C][truma_inetbox.sensor:049]:   Accuracy Decimals: 0
  [14:43:51][C][truma_inetbox.sensor:049]:   Icon: 'mdi:thermometer'
  [14:43:51][C][truma_inetbox.sensor:050]:   Type 'TARGET_WATER_TEMPERATURE'
  [14:43:51][C][truma_inetbox.room_climate:048]: truma_inetbox.room_climateTruma Room Climate 'Truma Room'
  [14:43:51][C][truma_inetbox.water_climate:020]: truma_inetbox.water_climateTruma Climate 'Truma Water'
  [14:43:51][C][captive_portal:088]: Captive Portal:
  [14:43:51][C][web_server:173]: Web Server:
  [14:43:51][C][web_server:174]:   Address: truma.local:80
  [14:43:51][C][mdns:115]: mDNS:
  [14:43:51][C][mdns:116]:   Hostname: truma
  [14:43:51][C][esphome.ota:073]: Over-The-Air updates:
  [14:43:51][C][esphome.ota:074]:   Address: truma.local:3232
  [14:43:51][C][esphome.ota:075]:   Version: 2
  [14:43:51][C][safe_mode:018]: Safe Mode:
  [14:43:51][C][safe_mode:020]:   Boot considered successful after 60 seconds
  [14:43:51][C][safe_mode:021]:   Invoke after 10 boot attempts
  [14:43:51][C][safe_mode:023]:   Remain in safe mode for 300 seconds
  [14:43:51][C][api:139]: API Server:
  [14:43:51][C][api:140]:   Address: truma.local:6053
  [14:43:51][C][api:144]:   Using noise encryption: NO
  [14:44:10][I][safe_mode:041]: Boot seems successful; resetting boot loop counter
  [14:44:10][D][esp32.preferences:114]: Saving 1 preferences to flash...
  [14:44:10][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
  [14:44:29][W][api.connection:104]: ESPHome Logs 2024.6.6 (192.168.1.199): Connection closed
  [14:44:30][W][component:157]: Component api set Warning flag: unspecified
  [14:46:50][D][api:102]: Accepted 192.168.1.199
  [14:46:50][W][component:170]: Component api cleared Warning flag
  [14:46:50][D][api.connection:197]: aioesphomeapi (192.168.1.199) requested disconnected
  [14:46:50][D][api:102]: Accepted 192.168.1.199
  [14:46:50][D][api.connection:1375]: Home Assistant 2024.7.1 (192.168.1.199): Connected successfully
  [14:48:02][D][climate:011]: 'Truma Room' - Setting
  [14:48:02][D][climate:015]:   Mode: HEAT
  [14:48:02][W][truma_inetbox.TrumaiNetBoxAppHeater:059]: Cannot update Truma.
  [14:48:06][D][climate:011]: 'Truma Room' - Setting
  [14:48:06][D][climate:024]:   Fan: MEDIUM
  [14:48:06][W][truma_inetbox.TrumaiNetBoxAppHeater:059]: Cannot update Truma.
  [14:48:22][D][climate:011]: 'Truma Room' - Setting
  [14:48:22][D][climate:015]:   Mode: HEAT
  [14:48:22][W][truma_inetbox.TrumaiNetBoxAppHeater:059]: Cannot update Truma.
  [14:48:59][D][climate:011]: 'Truma Room' - Setting
  [14:48:59][D][climate:015]:   Mode: HEAT
  [14:48:59][W][truma_inetbox.TrumaiNetBoxAppHeater:059]: Cannot update Truma.