need some help with pimatic-mysensors error Serialport not open

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I have a mysensors serial gateway connected to RPi ttyUSB0 and connected to 1 node with radios NRF24L01+ and they are communicating correctly.

The gateway receives the data from node 10 but produces a “Oops Serialport not open” error when I close or open the switch from the pimatic GUI, my remote node has a DHT sensor and a switch.

I have spent quite a bit of time researching this issue but to no avail other than maybe timing issue with the serial port, I am not a programmer I am a hardware and OS specialist, time to ask for help.

If there is anything else I can provide you, let me know, I am very excited to use pimatic, it really looks good!

My Config.json

{
  "settings": {
    "httpServer": {
      "enabled": true,
      "port": 80
    },
    "database": {
      "deviceAttributeLogging": [
        {
          "deviceId": "*",
          "attributeName": "*",
          "type": "*",
          "interval": "0",
          "expire": "7d"
        },
        {
          "deviceId": "*",
          "attributeName": "*",
          "type": "continuous",
          "interval": "5min",
          "expire": "7d"
        },
        {
          "deviceId": "*",
          "attributeName": "temperature",
          "type": "number",
          "expire": "1y"
        },
        {
          "deviceId": "*",
          "attributeName": "humidity",
          "type": "number",
          "expire": "1y"
        }
      ],
      "messageLogging": [
        {
          "level": "*",
          "tags": [],
          "expire": "7d"
        },
        {
          "level": "debug",
          "tags": [],
          "expire": "1d"
        }
      ]
    },
    "authentication": {
      "secret": "xxxxxxxxxx"
    },
    "httpsServer": {},
    "gui": {}
  },
  "plugins": [
    {
      "plugin": "cron"
    },
    {
      "plugin": "mobile-frontend",
      "theme": "graphite/royal",
      "flat": false,
      "debug": false,
      "mode": "production"
    },
    {
      "plugin": "mysensors",
      "driver": "serialport",
      "protocols": "1.4.1",
      "driverOptions": {
        "//": "'/dev/ttyUSB0' if using serial Gateway",
        "serialDevice": "/dev/ttyMySensorsGateway",
        "baudrate": 115200
      }
    },
    {
      "plugin": "shell-execute"
    }
  ],
  "devices": [
    {
      "id": "DHT22",
      "name": "Temp Office",
      "class": "MySensorsDHT",
      "nodeid": 10,
      "sensorid": [
        0,
        1
      ]
    },
    {
      "id": "Switch",
      "name": "Switch",
      "class": "MySensorsSwitch",
      "nodeid": 10,
      "sensorid": 2
    }
  ],
  "rules": [],
  "pages": [
    {
      "id": "favourite",
      "name": "Favourites",
      "devices": [
        {
          "deviceId": "Switch"
        },
        {
          "deviceId": "DHT22"
        }
      ]
    }
  ],
  "groups": [
    {
      "id": "test",
      "name": "Test",
      "devices": [],
      "rules": [],
      "variables": []
    },
    {
      "id": "fromradio",
      "name": "FromRadio",
      "devices": [
        "DHT22",
        "Switch"
      ],
      "rules": [],
      "variables": []
    }
  ],
  "users": [
    {
      "username": "admin",
      "password": "xxxxxxxxxx",
      "role": "admin"
    }
  ],
  "roles": [
    {
      "name": "admin",
      "permissions": {
        "pages": "write",
        "rules": "write",
        "variables": "write",
        "messages": "write",
        "events": "write",
        "devices": "write",
        "groups": "write",
        "plugins": "write",
        "updates": "write",
        "database": "write",
        "config": "write",
        "controlDevices": true,
        "restart": true
      }
    }
  ],
  "variables": []
}

Output from the serial gateway

0;0;3;0;14;Gateway startup complete.
0;0;3;0;9;read: 10-10-0 s=255,c=0,t=17,pt=0,l=5:1.4.1
10;255;0;0;17;1.4.1
0;0;3;0;9;read: 10-10-0 s=255,c=3,t=6,pt=1,l=1:0
10;255;3;0;6;0
0;0;3;0;9;read: 10-10-0 s=255,c=3,t=11,pt=0,l=8:Humidity
10;255;3;0;11;Humidity
0;0;3;0;9;read: 10-10-0 s=255,c=3,t=12,pt=0,l=3:1.0
10;255;3;0;12;1.0
0;0;3;0;9;read: 10-10-0 s=0,c=0,t=7,pt=0,l=5:1.4.1
10;0;0;0;7;1.4.1
0;0;3;0;9;read: 10-10-0 s=1,c=0,t=6,pt=0,l=5:1.4.1
10;1;0;0;6;1.4.1
0;0;3;0;9;read: 10-10-0 s=4,c=0,t=3,pt=0,l=5:1.4.1
10;4;0;0;3;1.4.1
0;0;3;0;9;read: 10-10-0 s=1,c=1,t=0,pt=7,l=5:23.6
10;1;1;0;0;23.6
0;0;3;0;9;read: 10-10-0 s=0,c=1,t=1,pt=7,l=5:39.0
10;0;1;0;1;39.0
0;0;3;0;9;read: 10-10-0 s=4,c=1,t=2,pt=2,l=2:1
10;4;1;0;2;1
0;0;3;0;9;read: 10-10-0 s=4,c=1,t=2,pt=2,l=2:1
10;4;1;0;2;1

Output from node 10

sensor started, id 10
send: 10-10-0-0 s=255,c=0,t=17,pt=0,l=5,st=ok:1.4.1
send: 10-10-0-0 s=255,c=3,t=6,pt=1,l=1,st=ok:0
send: 10-10-0-0 s=255,c=3,t=11,pt=0,l=8,st=ok:Humidity
send: 10-10-0-0 s=255,c=3,t=12,pt=0,l=3,st=ok:1.0
send: 10-10-0-0 s=0,c=0,t=7,pt=0,l=5,st=ok:1.4.1
send: 10-10-0-0 s=1,c=0,t=6,pt=0,l=5,st=ok:1.4.1
send: 10-10-0-0 s=4,c=0,t=3,pt=0,l=5,st=ok:1.4.1
send: 10-10-0-0 s=1,c=1,t=0,pt=7,l=5,st=ok:23.6
T: 23.60
send: 10-10-0-0 s=0,c=1,t=1,pt=7,l=5,st=ok:39.0
H: 39.00
send: 10-10-0-0 s=4,c=1,t=2,pt=2,l=2,st=ok:1

Log file
info [pimatic]: Listening for HTTP-request on port 80…
10:52:55info [pimatic-mobile-frontend]: rendering html finished
10:52:47info [pimatic-mobile-frontend]: rendering html
10:52:47info [pimatic-mobile-frontend]: packing static assets finished
10:52:46info [pimatic-mobile-frontend]: packing static assets
10:52:46info [pimatic]: New device “Switch”…
10:52:46info [pimatic-mysensors]: MySensorsSwitch Switch Switch undefined
10:52:46info [pimatic]: New device “Temp Office”…
10:52:46info [pimatic-mysensors]: MySensorsDHT DHT22 Temp Office
10:52:45info [pimatic-cron]: the time is: Thu May 21 2015 10:52:45 GMT-0400 (EDT)
10:52:45info [pimatic]: Loading plugin: “pimatic-shell-execute” (0.8.10)
10:52:45info [pimatic]: Loading plugin: “pimatic-mysensors” (0.8.17)
10:52:43info [pimatic]: Loading plugin: “pimatic-mobile-frontend” (0.8.64)
10:52:42info [pimatic]: Loading plugin: “pimatic-cron” (0.8.5)

And thank you in advance for your help, If there is anything else I can provide you, let me know.

David Schneider
A PC Specialist

Does Pimatic receive log info from the mysensors plug-in? It looks like you read out the gw directly. And run Pimatic, but pimatic cant open the serial port because you have opened it yourself.

@sweebee If I understand correctly I had the arduino IDE open to use the serial port just for checking function of the gw and node. The system is then restarted, It seems as if pimatic does not get the temp and humidity (all devices are null in the database) although it is reaching the gateway. When I press on the button switch to close the switch on the node I receive the “Serialport not open”. I do not receive any other debugging or log info that I am aware of.

David Schneider

@davidsfl said:

serialDevice": "/dev/ttyMySensorsGateway

This is the wrong port.

is the mysensors gateway the only device that is connected to your raspberry? if so, change it to /dev/ttyUSB0:

{
      "plugin": "mysensors",
      "driver": "serialport",
      "protocols": "1.4.1",
      "driverOptions": {
        "serialDevice": "/dev/ttyUSB0",
        "baudrate": 115200
      }
    }

@sweebee said:

“serialDevice”: “/dev/ttyUSB0”,

That absolutely fixed it, I’m not sure were I got the original, but “serialDevice”: “/dev/ttyUSB0” worked. You have all done an awesome job, everything works, the front-end is clean and looks great, easy to use and the graphing beets everyone else’s, by far. I’m in the US and for now centigrade is fine (I was actually taught it in school because the US was going to convert 35 years ago) but I would like to help in anyway I can to get Pimatic to support Imperial temperatures.

Thank you for the help

Well i think mySensors supports sending of Fahrenheit. You just need to configure metric = false.
But i don’t know about the mysensors pimatic plugin i think the °C is hard coded in there.

http://www.mysensors.org/build/humidity

There is a boolean metric. So yes, mysensors supports Fahrenheit.

@sweebee said:

@davidsfl said:

serialDevice": "/dev/ttyMySensorsGateway

This is the wrong port.

is the mysensors gateway the only device that is connected to your raspberry? if so, change it to /dev/ttyUSB0:

{
      "plugin": "mysensors",
      "driver": "serialport",
      "protocols": "1.4.1",
      "driverOptions": {
        "serialDevice": "/dev/ttyUSB0",
        "baudrate": 115200
      }
    }

For me it was not the only device connected, I have the Homeduino on ttyUSB0. My config is now updated to

{
  "plugin": "mysensors",
  "driver": "serialport",
  "protocols": "1.5.1",
  "startingNodeId": 1,
  "driverOptions": {
    "serialDevice": "/dev/ttyUSB1",
    "baudrate": 115200
  }

where at first I had just copied the info from the github page.

{
“plugin”: “mysensors”,
“driver”: “serialport”,
“protocols”: “1.5.1”,
“startingNodeId”: 1,
“driverOptions”: {
"//": “’/dev/ttyUSBx’ if using serial Gateway”,
“serialDevice”: “/dev/ttyMySensorsGateway”,
“baudrate”: 115200
}

You can easily check which device is on which USB by checking if you can still switch the lights etc after rebooting your Raspberry Pi. I couldn’t after adding the MySensors gateway, so I have just switched the positions of the homeduino and MySensors.

(I know it is not the most elegant way, but if your knowledge of linux is limited, you can debug it like a mechanical engineer)

You could check this:

ls -l /dev/serial/by-id/

If it shows 2 devices you could replace /dev/ttyUSB1 with /dev/serial/by-id/deviceid

But if the arduino’s both have th CH340 chip than it won’t work.

@sweebee

pi@raspberrypi ~ $ ls -l /dev/serial/by-id
totaal 0
lrwxrwxrwx 1 root root 13 jan 1 1970 usb-1a86_USB2.0-Serial-if00-port0 -> …/. ./ttyUSB1

As far as I know both have the CH340 chip indeed. Jammer maar helaas. Anyway, it works, so I’m happy.