Hoymiles HMS-800-2T - no connection

[comgen89]

Hello everyone,
I bought the kit from blinkyparts (https://shop.blinkyparts.com/de/OpenDTU-CMT-Deine-Auswertung-fuer-deine-Balkonsolaranlage-kompatibel-zu-Hoymiles-HMS-und-HMT-Serie-CMT-Modul/blink238342). The SMD component was already soldered.

The Hoymiles HMS-800-2T runs and supplies power. Unfortunately, I cannot establish a connection with the openDTU.

I have updated the firmware.

Do you need more information

Can anyone help me?

[ms49434]

For hardware related issues, contact shop@blinkyparts.com,
For software related issues, provide more information, i.e. which software variant / version / pin-mapping / radio information.
It is always better to provide more information than needed instead of playing the need more information game.

[comgen89]

I actually don't know where the error lies. either software or hardware. :-(

[comgen89]

Systeminformation

Hardwaresetting
Here I have selected CMT, LED und Display.
I have found this pin-mapping for blinkypart. Link: (OpenDTU/docs/DeviceProfiles/blinkyparts_esp32.json at master · tbnobody/OpenDTU · GitHub)

[comgen89]

@ms49434: I hope this are the right informations

[ms49434]

If the correct pin-mapping is loaded, the issue is caused by a wiring or a hardware fault. Your CMT2300A is reported as not connected -> check wiring. If the check returns nothing, check again.

[comgen89]

Hi,
I measured the solder joints and replaced some of them.

I noticed that the antenna connection (five connections) has contact to all connections. Is this normal?

[Solarteur]

Two comments/questions:

1. Between which "antenna connection" and "all connections" is there contact? Can you perhaps upload a picture of this?
2. In the pin mapping, GPIO 18 is selected twice, once for "CMT clk" and once for "Eth mdio". Since "Eth" is not active, this probably doesn't matter.

[comgen89]

The pin-mapping is the official for this board :/

[comgen89]

I have read out the boot process. Here is the log:

`rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DOUT, clock div:2
load:0x3fff0030,len:1184
load:0x40078000,len:13192
load:0x40080400,len:3028
entry 0x400805e4
E (731) esp_core_dump_flash: No core dump ▒f&ѥѥ▒▒ found!
E (731) esp_core_dump_flash: No core dump partition found!

Starting OpenDTU
Initialize FS... done
Reading configuration... Check for default DTU serial... done
done
Reading language pack... done
Reading PinMapping... found valid mapping done
Initialize Network... done
Setting Hostname... Configuring WiFi STA using new credentials... done
Initialize NTP... done
Initialize SunPosition... done
Initialize MqTT... done
Initialize WebApi... done
Initialize Display... done
Initialize LEDs... done
Initialize Hoymiles interface... CMT: Connection error!!
Setting country mode...
Setting CMT target frequency...
Setting radio PA level...
Setting DTU serial...
Setting poll interval...
Adding inverter: 114483...... - SolarModulGartenhaus done
done
Switch to WiFi mode
Setting Hostname... done
Configuring WiFi STA using new credentials... done
Configuring WiFi STA DHCP IP... done
WiFi connected
WiFi got ip: 192.168.90.83
Network connected
There are some connection problems to the cmt module:Initialize Hoymiles interface... CMT: Connection error!`

[ghost]

• Between which "antenna connection" and "all connections" is there contact? Can you perhaps upload a picture of this?
  -->> -->> Take a photo of it!!

The ESP32 Dev board is socketed. Pull out the ESP, unplug everything that is plugged in and check the contacts next to each other for a short circuit.

Is the wiring correct?
Did you follow these instructions? de, en; Board
If you made mistakes and turned the kit on, it could cause unpredictable damage.

Load a pin mapping only with the settings for the CMT onto the ESP and only connect this.