what is the procedure for getting data from NIBE VVM320

[maxusaurelius]

Hi,

Sorry for the stupid question, but I don't have much experience in this area yet.
What is the procedure for getting data from NIBE
1.) connecting NIBEVM320 via RS485 adapter to miniPC with linux (hardwired - PINs 9,10,11)
2.) installation/compilation of NibeGW (for linux) - "gcc -std=gnu99 -o nibegw nibegw.c"
3.) NIBE library installation - "pip install nibe"
4.) how do I now display the data from NIBE in JSON format??

please advise point 4 and possibly correct points 1-3

[yozik04]

2. Probably... I use arduino.
3. pip3 ...
4. how you will consume that json?

[maxusaurelius]

Node-red runs a python script that generates JSON output and then Node-red processes (parses) this output

[yozik04]

you will then need to use my example, update it to read coils sequentially, add results to a dict and then encode it as a json.
The library is meant to be used in a daemon, not like a one-off script. So you maybe want to change your approach. InfluxDB has some connectors that are able to save data from MQTT.

[maxusaurelius]

and default output is to MQTT? that's a good way for me too :)
I'm sorry where I found examles?

[yozik04]

MQTT is here: https://github.com/yozik04/nibe-mqtt

[maxusaurelius]

perfect! thank you!

[maxusaurelius]

I have still problem with getting data from NIBE VM320 :(

Could you help me please?

nibe-mqtt -c config.yaml
2023-02-28 09:36:43,731 - INFO - MainThread - root - Running Nibe MQTT 0.3.3 service with Nibe 1.6.0 lib
2023-02-28 09:36:43,741 - INFO - MainThread - nibe.nibe.connection.nibegw - Starting UDP server on port 9999
2023-02-28 09:36:48,748 - INFO - MainThread - nibe.nibe_mqtt.service - Polling coil bt50-room-temp-s1-40033: last_update = None
2023-02-28 09:37:03,767 - WARNING - MainThread - nibe.nibe_mqtt.service - Poll bt50-room-temp-s1-40033 failed: Timeout waiting for read response for bt50-room-temp-s1-40033
2023-02-28 09:37:03,767 - INFO - MainThread - nibe.nibe_mqtt.service - Polling coil bt1-outdoor-temperature-40004: last_update = None
2023-02-28 09:37:18,781 - WARNING - MainThread - nibe.nibe_mqtt.service - Poll bt1-outdoor-temperature-40004 failed: Timeout waiting for read response for bt1-outdoor-temperature-40004
2023-02-28 09:37:18,781 - INFO - MainThread - nibe.nibe_mqtt.service - Polling coil bt7-hw-top-40013: last_update = None
2023-02-28 09:37:33,797 - WARNING - MainThread - nibe.nibe_mqtt.service - Poll bt7-hw-top-40013 failed: Timeout waiting for read response for bt7-hw-top-40013
2023-02-28 09:37:33,797 - INFO - MainThread - nibe.nibe_mqtt.service - Polling coil bt6-hw-load-40014: last_update = None
2023-02-28 09:37:48,813 - WARNING - MainThread - nibe.nibe_mqtt.service - Poll bt6-hw-load-40014 failed: Timeout waiting for read response for bt6-hw-load-40014

output from nibegw:

./nibegw -v -d /dev/ttyUSB0 -a 192.168.0.104
NibeGW version: 1.23
Verbose level: 1
Test mode: FALSE
Serial port: /dev/ttyUSB0
Flow control: HW
remote UDP address: 192.168.0.104:9999
server UDP address for read cmds: 10000
server UDP address for write cmds: 10001
RS-485 address to listen: 0x20
Send all messages by UDP: FALSE
Send acknowledge: TRUE
Send acknowledge to all addresses: FALSE
Open serial port: /dev/ttyUSB0
Initialize UDP server
Initialize UDP server

2023.2.28 9:40:06:848086: 47
2023.2.28 9:40:06:848226: 7D
2023.2.28 9:40:06:848246: 6D
2023.2.28 9:40:06:848261: 46
2023.2.28 9:40:06:848277: 09
2023.2.28 9:40:06:848294: F3
2023.2.28 9:40:06:848310: FF
2023.2.28 9:40:06:848327: 47
2023.2.28 9:40:06:848343: 7D
2023.2.28 9:40:06:848359: 6D
2023.2.28 9:40:06:848375: 09
2023.2.28 9:40:06:848392: 35
2023.2.28 9:40:06:848409: FF
2023.2.28 9:40:06:848426: BE
2023.2.28 9:40:06:848443: 47
2023.2.28 9:40:06:848459: 7D
2023.2.28 9:40:06:848476: 6D
2023.2.28 9:40:06:848492: 24