CRC error when trying any php

[Heldenmar]

i have a nodemcu v3 and installed esplink.

when i connect the esp to the calenta 40c the esp turns on and i can reach the webpage of esp-link. but in the Microcontroller Console i dont see anything, i have set the baud rate to 4800 and fmt 8N1. when i try the hex code for the identification i dont get a response. i also installed the repo to my raspberry pi and tried to run the php but i get the next error code: />PHP version: 7.1.33-64+ubuntu24.04.1+deb.sury.org+1
Connected to 10.0.0.37:80
Sending request...
ID-01 read:
ID-02 read:
ID-03 read:
Identification used: 02
Data written to log: /var/log/remeha_identification_data.log

************** CRC ERROR!!!! *********** in the log i find this: **** CRC Error **** | 2024-10-06 16:21:10 | 02 03 | 02 03 | 02 03 | did i miss a step?

[rjblake]

From memory, I used Baud Rate of 9600. Did you try this? I'm not longer using the ESP-Link solution, but have installed ESP Home version to integrate with Home Assistant so unable to check. Also worth checking that the TX & RX are not swapped maybe (although from what I can make out from photos look correct)

[Heldenmar]

Do you have the link for the esphome version? Thank you

[rjblake]

Do you have the link for the esphome version? Thank you

I've got a branch here in my repos with a few changes I needed to make

[Heldenmar]

thank you, the esphome part is up and connected to homeassistant but i still get a crc error. does the boiler has to be in a specific setting?

[rjblake]

I did not make any changes to my boiler for this to work. I have noticed that with ESPHome version, there are some odd readings, but mostly reads correctly. Enabling the Web Server on ESP Home:

web_server:
  port: 80

Allows me to check and everything is normal. There are different readings taken, so some info should be populated as 2 different CRC checks from memory. If none, may be something else.

I have very short cable between the Boiler and ESP (btw have also used an ESP32 for this) so not sure if this has impact. Also, there is potential for a problem with the 5V signal and the expected 3V on the ESP (although many will say this should not be an issue).

[Heldenmar]

sorry for the late response, This is what the consoles says on the web page:

22:56:56	[E]	[custom:234]	CRC ERROR
22:56:56	[I]	[custom:238]	Sample Data: C64B0000000000004409FF3FFEFFFFFF00000000FCC6FF3F00000000641FFF3F712901006420FF3F641FFF3F30000000000000005C60FF3F580EFF3F00000000000000002A0372011886FE3F6A0F1040
22:56:56	[W]	[component:237]	Component took a long time for an operation (303 ms).
22:56:56	[W]	[component:238]	Components should block for at most 30 ms.
22:57:26	[E]	[custom:234]	CRC ERROR
22:57:26	[I]	[custom:238]	Sample Data: A6C921403C22FF3F746B234002000000C64B00000000000000000000FEFFFFFF00000000FCC6FF3F000000004009FF3F020000007060FF3F3C22FF3F0000000000000000910E0102741AFF3F00000000
22:57:26	[W]	[component:237]	Component took a long time for an operation (303 ms).
22:57:26	[W]	[component:238]	Components should block for at most 30 ms.
22:57:56	[E]	[custom:234]	CRC ERROR
22:57:56	[I]	[custom:238]	Sample Data: C64B00000000000000000000FEFFFFFF00000000FCC6FF3F000000004009FF3F020000006460FF3F2823FF3F30000000F0FEFF3F0471FF3F0471FF3F00000000A96110406E259002741AFF3F00000000
22:57:56	[W]	[component:237]	Component took a long time for an operation (303 ms).
22:57:56	[W]	[component:238]	Components should block for at most 30 ms.
22:58:26	[E]	[custom:234]	CRC ERROR
22:58:26	[I]	[custom:238]	Sample Data: 01000000D454FF3F0200000070F22140000000003CEC2140FBA9F1D2F36CE3023CEC2140010000000100000002000000F0FEFF3F0471FF3F0471FF3F000000000000000040271F03741AFF3F00000000
22:58:26	[W]	[component:237]	Component took a long time for an operation (303 ms).
22:58:26	[W]	[component:238]	Components should block for at most 30 ms.
22:58:56	[E]	[custom:234]	CRC ERROR
22:58:56	[I]	[custom:238]	Sample Data: 8FFC02009FFC02007C22FF3F30000000000000003CEC2140F1D24DA28BEE6A033CEC2140010000000100000001000000F0FEFF3F0471FF3F0471FF3F00000000A9611040FB3AAE03741AFF3F00000000
22:58:56	[W]	[component:237]	Component took a long time for an operation (303 ms).
22:58:56	[W]	[component:238]	Components should block for at most 30 ms.
22:59:26	[E]	[custom:234]	CRC ERROR
22:59:26	[I]	[custom:238]	Sample Data: A6C921404421FF3F146B234002000000C64B00000000000000000000FEFFFFFF00000000FCC6FF3F000000004009FF3F020000006860FF3F4421FF3F000000000000000051393D0410000000FFFFFFFF
22:59:26	[W]	[component:237]	Component took a long time for an operation (302 ms).
22:59:26	[W]	[component:238]	Components should block for at most 30 ms.
22:59:56	[E]	[custom:234]	CRC ERROR
22:59:56	[I]	[custom:238]	Sample Data: D002320F5C60FF3F641FFF3F30000000000000003CEC2140C420B0D29BEC79043CEC2140010000000100000001000000F0FEFF3F0471FF3F0471FF3F0000000000000000A641CC04741AFF3F00000000
22:59:56	[W]	[component:237]	Component took a long time for an operation (302 ms).
22:59:56	[W]	[component:238]	Components should block for at most 30 ms.
23:00:26	[I]	[custom:269]	Counter1 Data: F0FEFF3F0471FF3F0471FF3F00000000A9611040DF615B05741AFF3F
23:00:27	[I]	[custom:288]	Counter2 Data: F0FEFF3F0471FF3F0471FF3F00000000A9611040DF615B05741AFF3F
23:00:27	[W]	[component:237]	Component took a long time for an operation (604 ms).
23:00:27	[W]	[component:238]	Components should block for at most 30 ms.

[Heldenmar]

i bought a esp 32 devboard but again with crc error. could you send me your yaml code for your esp32?

[R-dehaan]

@Heldenmar did you solve the issue in the end? I have exactly the same behaviour