Refresh UI avoiding msg loops

Dashboard
1

Hi all ,

I'm developing a simple interface for home automation which has some logic behind , internal updates and calls to AI routines though APIs. I'm having problems probably cause a lack of knowledge in general javascript msg processing and how to avoid msg loops.-

The question is :
· How can I change the input of a dashboard component without get into an endless loop?

Example :
· UI slider for setting the temp of a heater manually.
· UI switch for enable/disable Automode.
· Internal Logic Function : When Automode is ON , a call to AI API will get temperature value and update the output heater , but I also want to update the slider , and this become into a enless loop.

What I tried :
· Keep the status in a State node between UI Dashboard , and Internal Logic function.
· Use MQTT to subscribe to changes.

Result :
· Allways endless loop or undesired behaviour .-

Thank you in advance .-

Here is the code :

 [
    {
        "id": "f1210038.8be3d",
        "type": "tab",
        "label": "AIDomotics_CONTROL",
        "disabled": false,
        "info": ""
    },
    {
        "id": "635efa24.63c424",
        "type": "ui_switch",
        "z": "f1210038.8be3d",
        "name": "AT HOME",
        "label": "AT HOME",
        "tooltip": "Indicanos si estas en casa.",
        "group": "e30fbbe1.4b2f68",
        "order": 0,
        "width": "2",
        "height": "1",
        "passthru": false,
        "decouple": "false",
        "topic": "athome",
        "style": "",
        "onvalue": "{\"athome\":1}",
        "onvalueType": "json",
        "onicon": "",
        "oncolor": "",
        "offvalue": "{\"athome\":0}",
        "offvalueType": "json",
        "officon": "",
        "offcolor": "",
        "x": 120,
        "y": 280,
        "wires": [
            [
                "c3ae7fc7.bb29f",
                "e6699a51.498b18",
                "69d0bdc2.08a544"
            ]
        ],
        "icon": "font-awesome/fa-male"
    },
    {
        "id": "c8d96722.8c5e58",
        "type": "ui_switch",
        "z": "f1210038.8be3d",
        "name": "AUTO MODE",
        "label": "AUTO MODE",
        "tooltip": "",
        "group": "e30fbbe1.4b2f68",
        "order": 1,
        "width": "2",
        "height": "1",
        "passthru": false,
        "decouple": "false",
        "topic": "automode",
        "style": "",
        "onvalue": "{\"automode\":1}",
        "onvalueType": "json",
        "onicon": "",
        "oncolor": "",
        "offvalue": "{\"automode\":0}",
        "offvalueType": "json",
        "officon": "",
        "offcolor": "",
        "x": 140,
        "y": 340,
        "wires": [
            [
                "c3ae7fc7.bb29f",
                "e6699a51.498b18",
                "69d0bdc2.08a544"
            ]
        ],
        "icon": "node-red/cog.svg"
    },
    {
        "id": "c9ae096d.2ceef8",
        "type": "inject",
        "z": "f1210038.8be3d",
        "name": "5_MINS_SCHEDULER",
        "topic": "",
        "payload": "scheduller",
        "payloadType": "flow",
        "repeat": "300",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 170,
        "y": 140,
        "wires": [
            [
                "aeed1f62.35c4b"
            ]
        ]
    },
    {
        "id": "aeed1f62.35c4b",
        "type": "http request",
        "z": "f1210038.8be3d",
        "d": true,
        "name": "PREDICTOR_API",
        "method": "GET",
        "ret": "obj",
        "paytoqs": false,
        "url": "aidomgw51.local:11000/api/1.0/prediction?time=15",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "",
        "x": 470,
        "y": 580,
        "wires": [
            [
                "c2d0b145.77584"
            ]
        ]
    },
    {
        "id": "6850a2dc.88f19c",
        "type": "http request",
        "z": "f1210038.8be3d",
        "d": true,
        "name": "SET_TEMPERATURE",
        "method": "POST",
        "ret": "txt",
        "paytoqs": false,
        "url": "10.254.254.1:5000/api/1.0/therm",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "",
        "x": 1600,
        "y": 720,
        "wires": [
            []
        ]
    },
    {
        "id": "c3ae7fc7.bb29f",
        "type": "debug",
        "z": "f1210038.8be3d",
        "name": "USER INPUT MONITOR",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 750,
        "y": 260,
        "wires": []
    },
    {
        "id": "4563ce00.eb65a",
        "type": "http request",
        "z": "f1210038.8be3d",
        "d": true,
        "name": "VENTILATION",
        "method": "POST",
        "ret": "txt",
        "paytoqs": false,
        "url": "10.254.254.1:5000/api/1.0/therm",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "",
        "x": 1540,
        "y": 840,
        "wires": [
            []
        ]
    },
    {
        "id": "cf061b07.e64808",
        "type": "http request",
        "z": "f1210038.8be3d",
        "d": true,
        "name": "DRY-HUMIDIFY",
        "method": "POST",
        "ret": "txt",
        "paytoqs": false,
        "url": "10.254.254.1:5000/api/1.0/therm",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "",
        "x": 1580,
        "y": 780,
        "wires": [
            []
        ]
    },
    {
        "id": "100a5123.6d199f",
        "type": "ui_slider",
        "z": "f1210038.8be3d",
        "name": "TEMP SET",
        "label": "SET MANUAL",
        "tooltip": "",
        "group": "e30fbbe1.4b2f68",
        "order": 2,
        "width": "6",
        "height": "1",
        "passthru": true,
        "outs": "end",
        "topic": "temperature",
        "min": "0",
        "max": "35",
        "step": "0.5",
        "x": 130,
        "y": 460,
        "wires": [
            [
                "b1af509c.63849",
                "e6699a51.498b18"
            ]
        ]
    },
    {
        "id": "2daa4254.3302de",
        "type": "function",
        "z": "f1210038.8be3d",
        "name": "THERM_ENCODER",
        "func": "var temperature = parseFloat(msg.payload.temperature);\n\nmsg.payload.temp = 2*temperature.toFixed(0);\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 1340,
        "y": 620,
        "wires": [
            [
                "6850a2dc.88f19c"
            ]
        ]
    },
    {
        "id": "8e2bbf11.0cc92",
        "type": "http request",
        "z": "f1210038.8be3d",
        "d": true,
        "name": "NOISE_THRESHOLD",
        "method": "POST",
        "ret": "txt",
        "paytoqs": false,
        "url": "10.254.254.1:5000/api/1.0/therm",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "",
        "x": 1560,
        "y": 960,
        "wires": [
            []
        ]
    },
    {
        "id": "2cc58dff.6c6332",
        "type": "ui_switch",
        "z": "f1210038.8be3d",
        "name": "ECO MODE",
        "label": "ECO MODE",
        "tooltip": "",
        "group": "e30fbbe1.4b2f68",
        "order": 1,
        "width": "2",
        "height": "1",
        "passthru": false,
        "decouple": "false",
        "topic": "ecomode",
        "style": "",
        "onvalue": "{\"ecomode\":1}",
        "onvalueType": "json",
        "onicon": "",
        "oncolor": "",
        "offvalue": "{\"ecomode\":0}",
        "offvalueType": "json",
        "officon": "",
        "offcolor": "",
        "x": 130,
        "y": 400,
        "wires": [
            [
                "c3ae7fc7.bb29f",
                "e6699a51.498b18",
                "69d0bdc2.08a544"
            ]
        ],
        "icon": "node-red/white-globe.svg"
    },
    {
        "id": "c2d0b145.77584",
        "type": "function",
        "z": "f1210038.8be3d",
        "name": "AIDOMOTICS_LOGIC",
        "func": "var athome = msg.payload.athome;\nvar automode = msg.payload.automode;\nvar ecomode = msg.payload.ecomode;\nvar temperature = msg.payload.temperature;\n\nvar msg2 = {payload : {}};\n\nif(ecomode ===1)\n{\n    msg.payload.temperature=\"18\";\n    msg2.payload.uitemperature=\"18\";\n    msg2.payload.uiautomode=\"0\";\n}\n\nreturn [msg,msg2];\n",
        "outputs": 2,
        "noerr": 0,
        "x": 760,
        "y": 440,
        "wires": [
            [
                "57933940.1d0518",
                "34734116.d2d0ee"
            ],
            [
                "da7f3c94.98112"
            ]
        ],
        "inputLabels": [
            "IN"
        ],
        "outputLabels": [
            "GENERAL",
            ""
        ]
    },
    {
        "id": "6d3315fa.2834ac",
        "type": "ui_gauge",
        "z": "f1210038.8be3d",
        "name": "CURRENT TEMP",
        "group": "e30fbbe1.4b2f68",
        "order": 4,
        "width": "3",
        "height": "3",
        "gtype": "gage",
        "title": "CURRENT TEMP",
        "label": "ºC",
        "format": "{{msg.payload[0].last.toFixed(2)}}",
        "min": "-10",
        "max": "50",
        "colors": [
            "#00b500",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 1570,
        "y": 80,
        "wires": [],
        "inputLabels": [
            "last"
        ]
    },
    {
        "id": "f5776efb.ffe21",
        "type": "ui_gauge",
        "z": "f1210038.8be3d",
        "name": "DESIRED_TEMP",
        "group": "e30fbbe1.4b2f68",
        "order": 4,
        "width": "3",
        "height": "3",
        "gtype": "gage",
        "title": "DESIRED TEMP",
        "label": "ºC",
        "format": "{{msg.payload.temperature}}",
        "min": "-10",
        "max": "50",
        "colors": [
            "#00b500",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 1570,
        "y": 240,
        "wires": []
    },
    {
        "id": "b3ac5890.ed3408",
        "type": "http request",
        "z": "f1210038.8be3d",
        "d": true,
        "name": "NOTIFICATION",
        "method": "POST",
        "ret": "txt",
        "paytoqs": false,
        "url": "10.254.254.1:5000/api/1.0/therm",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "",
        "x": 1540,
        "y": 900,
        "wires": [
            []
        ]
    },
    {
        "id": "55ce0abe.3427f4",
        "type": "influxdb in",
        "z": "f1210038.8be3d",
        "influxdb": "ce36c9f.c159138",
        "name": "SENSOR1",
        "query": "SELECT last(temperature) FROM SENSOR1 WHERE time > now() - 1h LIMIT 1",
        "rawOutput": false,
        "precision": "s",
        "retentionPolicy": "",
        "x": 790,
        "y": 80,
        "wires": [
            [
                "6d3315fa.2834ac"
            ]
        ]
    },
    {
        "id": "34734116.d2d0ee",
        "type": "debug",
        "z": "f1210038.8be3d",
        "name": "LOGIC MONITOR",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 1030,
        "y": 240,
        "wires": []
    },
    {
        "id": "ef3c2d6.a363ed",
        "type": "inject",
        "z": "f1210038.8be3d",
        "name": "5_SECONDS_SCHEDULER",
        "topic": "",
        "payload": "scheduller",
        "payloadType": "flow",
        "repeat": "5",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "x": 180,
        "y": 80,
        "wires": [
            [
                "55ce0abe.3427f4",
                "6e572061.38222"
            ]
        ]
    },
    {
        "id": "b1af509c.63849",
        "type": "template",
        "z": "f1210038.8be3d",
        "name": "ENCODER",
        "field": "payload",
        "fieldType": "msg",
        "format": "handlebars",
        "syntax": "mustache",
        "template": "{\"temperature\":{{payload}}}",
        "output": "json",
        "x": 330,
        "y": 460,
        "wires": [
            [
                "69d0bdc2.08a544"
            ]
        ]
    },
    {
        "id": "6e572061.38222",
        "type": "influxdb in",
        "z": "f1210038.8be3d",
        "influxdb": "ce36c9f.c159138",
        "name": "SENSOR2",
        "query": "SELECT last(temperature) FROM SENSOR2 WHERE time > now() - 1h LIMIT 1",
        "rawOutput": false,
        "precision": "s",
        "retentionPolicy": "",
        "x": 790,
        "y": 140,
        "wires": [
            [
                "c361c291.ac2a6"
            ]
        ]
    },
    {
        "id": "c361c291.ac2a6",
        "type": "ui_gauge",
        "z": "f1210038.8be3d",
        "name": "OUTSIDE TEMP",
        "group": "e30fbbe1.4b2f68",
        "order": 4,
        "width": "6",
        "height": "3",
        "gtype": "gage",
        "title": "OUTSIDE TEMP",
        "label": "ºC",
        "format": "{{msg.payload[0].last.toFixed(2)}}",
        "min": "-10",
        "max": "50",
        "colors": [
            "#00b500",
            "#e6e600",
            "#ca3838"
        ],
        "seg1": "",
        "seg2": "",
        "x": 1570,
        "y": 140,
        "wires": [],
        "inputLabels": [
            "last"
        ]
    },
    {
        "id": "ff8b7618.fe0c48",
        "type": "function",
        "z": "f1210038.8be3d",
        "name": "THERM_ENCODER",
        "func": "var temp = parseFloat(msg.payload.temperature);\n\nmsg.payload.temperature = temp.toFixed(1);\n\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "x": 1340,
        "y": 500,
        "wires": [
            [
                "f5776efb.ffe21"
            ]
        ]
    },
    {
        "id": "cbbbee0b.b5173",
        "type": "ui_toast",
        "z": "f1210038.8be3d",
        "position": "bottom left",
        "displayTime": "3",
        "highlight": "",
        "sendall": true,
        "outputs": 0,
        "ok": "OK",
        "cancel": "",
        "raw": false,
        "topic": "Notify : ",
        "name": "SCREEN NOTIFICATION",
        "x": 1590,
        "y": 360,
        "wires": []
    },
    {
        "id": "82c10355.dd5de",
        "type": "debug",
        "z": "f1210038.8be3d",
        "name": "NOTIFICATION MONITOR",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 1300,
        "y": 240,
        "wires": []
    },
    {
        "id": "e4e4820a.a71fb",
        "type": "comment",
        "z": "f1210038.8be3d",
        "name": "SCHEDULERS",
        "info": "",
        "x": 140,
        "y": 20,
        "wires": []
    },
    {
        "id": "f1c68e40.5a044",
        "type": "comment",
        "z": "f1210038.8be3d",
        "name": "USER INPUT",
        "info": "",
        "x": 130,
        "y": 200,
        "wires": []
    },
    {
        "id": "93290370.5b384",
        "type": "comment",
        "z": "f1210038.8be3d",
        "name": "INFLUXDB INPUTS",
        "info": "",
        "x": 790,
        "y": 20,
        "wires": []
    },
    {
        "id": "20253cb5.c4b1f4",
        "type": "comment",
        "z": "f1210038.8be3d",
        "name": "DASHBOARD",
        "info": "",
        "x": 1550,
        "y": 20,
        "wires": []
    },
    {
        "id": "6f2b35e0.0a0f2c",
        "type": "comment",
        "z": "f1210038.8be3d",
        "name": "ACTUATORS OUTPUT",
        "info": "",
        "x": 1600,
        "y": 620,
        "wires": []
    },
    {
        "id": "d3483f7f.c3d2d",
        "type": "comment",
        "z": "f1210038.8be3d",
        "name": "AI INPUTS",
        "info": "",
        "x": 440,
        "y": 520,
        "wires": []
    },
    {
        "id": "e6699a51.498b18",
        "type": "function",
        "z": "f1210038.8be3d",
        "name": "NOTIFICATIONS_LOGIC",
        "func": "var athome = msg.payload.athome;\nvar automode = msg.payload.automode;\nvar ecomode = msg.payload.ecomode;\nvar aitemp = msg.payload.temperature;\nvar mtemp = msg.payload.mtemperature;\n\nif (athome === 1)\n{\n    msg.payload.notification = {\"text\":\"Wellcome Home! \"}\n}\nif (athome === 0)\n{\n    msg.payload.notification = {\"text\":\"GoodBye !\"}\n}\nif (automode === 1)\n{\n    msg.payload.notification = {\"text\":\"Auto Mode ON\"}\n}   \nif (automode === 0)\n{\n    msg.payload.notification = {\"text\":\"Auto Mode OFF\"}\n}      \nif (ecomode === 1)\n{\n    msg.payload.notification = {\"text\":\"Eco Mode ON\"}\n}   \nif (ecomode === 0)\n{\n    msg.payload.notification = {\"text\":\"Eco Mode OFF\"}\n}   \n\n\nreturn msg\n",
        "outputs": 1,
        "noerr": 0,
        "x": 770,
        "y": 340,
        "wires": [
            [
                "5dfab07a.f2751"
            ]
        ],
        "inputLabels": [
            "IN"
        ],
        "outputLabels": [
            "GENERAL"
        ]
    },
    {
        "id": "eebca861.150638",
        "type": "template",
        "z": "f1210038.8be3d",
        "name": "TO_TEXT",
        "field": "payload",
        "fieldType": "msg",
        "format": "handlebars",
        "syntax": "mustache",
        "template": "{{payload.notification.text}}",
        "output": "str",
        "x": 1340,
        "y": 340,
        "wires": [
            [
                "cbbbee0b.b5173",
                "82c10355.dd5de"
            ]
        ]
    },
    {
        "id": "5dfab07a.f2751",
        "type": "switch",
        "z": "f1210038.8be3d",
        "name": "EMPTYCHECK",
        "property": "payload.notification.text",
        "propertyType": "msg",
        "rules": [
            {
                "t": "nempty"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 1,
        "x": 1020,
        "y": 340,
        "wires": [
            [
                "eebca861.150638"
            ]
        ]
    },
    {
        "id": "f563c064.2ce2f",
        "type": "debug",
        "z": "f1210038.8be3d",
        "name": "CUSTOM",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "x": 740,
        "y": 580,
        "wires": []
    },
    {
        "id": "69d0bdc2.08a544",
        "type": "set-shared-state",
        "z": "f1210038.8be3d",
        "state": "4a3b385a.53beb8",
        "name": "USER_INPUT",
        "triggerOnInit": true,
        "provideOutput": false,
        "outputs": 0,
        "x": 440,
        "y": 160,
        "wires": []
    },
    {
        "id": "34e3358e.39f77a",
        "type": "get-shared-state",
        "z": "f1210038.8be3d",
        "state": "4a3b385a.53beb8",
        "name": "USER_INPUT",
        "triggerOnInit": true,
        "x": 430,
        "y": 220,
        "wires": [
            [
                "f19d235b.0ff4"
            ]
        ]
    },
    {
        "id": "57933940.1d0518",
        "type": "function",
        "z": "f1210038.8be3d",
        "name": "MSG_SPLITTER",
        "func": "// MQTT Parser\n// This script will extract 6 properties of a JSON Object\n// And generate 6 outputs one with each value\n\nvar temperature = msg.payload.temperature;\nvar humidity = msg.payload.humidity;\nvar co2 = msg.payload.co2;\nvar tvoc = msg.payload.tvoc;\nvar luminosity = msg.payload.luminosity;\nvar noise = msg.payload.noise;\n\nvar msg1 = {payload : {}};\nvar msg2 = {payload : {}};\nvar msg3 = {payload : {}};\nvar msg4 = {payload : {}};\nvar msg5 = {payload : {}};\nvar msg6 = {payload : {}};\n\nmsg1.payload.temperature = temperature;\nmsg2.payload.humidity = humidity;\nmsg3.payload.co2 = co2;\nmsg4.payload.tvoc = tvoc;\nmsg5.payload.luminosity = luminosity;\nmsg6.payload.noise = noise;\n\nreturn [msg1,msg2,msg3,msg4,msg5,msg6];",
        "outputs": 6,
        "noerr": 0,
        "x": 1010,
        "y": 440,
        "wires": [
            [
                "ff8b7618.fe0c48",
                "2daa4254.3302de"
            ],
            [],
            [],
            [],
            [],
            []
        ]
    },
    {
        "id": "f19d235b.0ff4",
        "type": "mqtt out",
        "z": "f1210038.8be3d",
        "name": "CONTROL",
        "topic": "control/ui/",
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2

Welcome to the forum @woiptcs.

When you want to post a flow or code or a log or anything similar then it is best to use the </> button at the top of the forum text entry window when pasting it. That stops the forum from messing with it. I will correct your post and have a look at your flow.

3

Thanks so much Colin, sorry about pasting "formated code" .-

4

Also when posting a flow it is best just to select the particular nodes that are needed to show the problem and export just those, that makes it easier for us to see what is going on.

It isn't clear in your flow where the loop is, I don't see any loops. Can you select just those nodes required to show one of the loops and export just those please. If you have left some of the wires off to prevent the loop then you can join them up and export the flow without actually deploying it.
If the loop is going through the switch then, since you have disabled message pass through, then that should not be happening. I will check how the slider is supposed to perform while waiting for your next post.

5

Hi Colin ,

If you have the chance to RUN the FLOW , you will see there is a conditional expression inside AIDOMOTICS Logic.

When the user change EcoMode to ON "1" , this will automatically update temperature in DESIRED TEMP (Gauge) wich works nice but I want to Update the slider as well .

Another example could be , when the user change AT_HOME to OFF "0" , I want to automatically change Eco Mode to ON .

When I try those kind of things I allways end in a endless loop , and I can't get ride from this .-

Please send me some documentation link wich can clarify this problem and I'll find the way to fix it .-

Thank you very much ,

6

Ok , activating the loops and sending you an update .-

7

With the slider if you deselect the If Message Arrives on Input ... box then that will still set the slider position but won't send a message, so that should stop a loop through the slider. I think the text in the setup is confusing, I will open a new thread about that.

I don't see how the AT_HOME/Eco mode requirement causes a loop, can you explain the route the messages take that causes a loop?

[Edit] See Slider - If msg arrives on input ... misleading for my question about the wording on the slider dialog.

8

Hello Colin ,

Again many thanks for your help , I thik I get rid from the looping problem at the slider deselecting "If message arrives on Input" , Great!

Now I will open another thread , with another point that is confusing for me .-

9

Another point I noticed on your flows, with the switches you have set them to show the state of the output. If you set them to show the state of the input then when you click the switch the displayed state will not change until the confirmation comes back to the input. Normally that will be effectively instantaneous but has the advantage that the switch will always show the actual state of the system, and also, if the system state can, for example, be changed by a physical switch in the outside world, or by other bits of your flow, then the displayed state will automatically change when the actual state in the real world changes.

10

Great appointment!

11

On question regarding to this , when connecting the outputs of the logical function to the inputs of the switches , what is better to use and why ?
· Nodered Direct Link ? (filtered or no)
· MQTT publish/subscribe ?
· Status record/restore ?

Thanks!

12

I use MQTT for everything like this, with Retained topics for things like temperature setpoints and switch states so that the system restarts in the same state that it was in when node-red is restarted. That also makes it easy to partition the flows into,for instance flows that read sensors and publish current values to MQTT, flows that subscribe to system state topics and perform logic on them and output to MQTT again, flows that subscribe to MQTT topics and output to the hardware (relays and so on), and finally flows that handle the UI, so the switches and so on, and subscribe and publish to the appropriate topics. Then when, for example, you are designing the UI you don't need to worry about how a temperature is read or how the heater is driven by the hardware, you can concentrate on just getting the UI right.
This often makes flows much simpler to design and maintain.

[Edit] and another advantage, if your system is distributed across several processors (Pis for example) then the cross system communication can all be through MQTT and again when, for example, developing the UI, you don't even need to know which device the sensor is connected to, you just subscribe to the right topic.

13

Hello Colin ,
I followed your recomendation and I did the follwing :

I've moved all the nodeRed connections between blocks to MQTT.
I changed the switches to show Input state.

I'm facing still some problems :

1.- How can I translate the follwing logic structure to nodered ?

2020-10-20_20-33
2020-10-20_20-331143×221 14.3 KB

a.-) function with If-else structures
b.-) switch nodes
c.-) other

2.- My AItemp info is received every 5 minutes , when the LOGIC flow is triggered I can't see the UI values incomming , how can I save/restore the GUI settings every time , a change is done in the GUI or an AI Informations is received at the function ? Or I may trigger an UI update when I receive new AI data ?

2020-10-20_20-39
2020-10-20_20-39563×544 42.3 KB

14

For problem 1 you could look at using node-red-contrib-bool-gate or (and I would probably do it this way) use a Join node configured similar to this cookbook example to combine the inputs into one message then use a function node to drive the outputs. Import the example from the cookbook and play with it to see how it works.

Sorry, I don't know what that means. Can you be more specific about what is happening? Rather than a general description describe exactly what happens and what you want to happen. So for example, every 5 mins the Predictor API is triggered which outputs these values to this topic, and so on.

15

I'll try to explain better what happens in problem 2.

As you can see in the previous picture , the AIDOMOTICS function has 2 inputs :
MQTT AI is triggered every 5 minutes witha Scheduller.
MQTT UI is triggered allways and ony when the user do any change in the UI.

So the AIDOMOTICS function is tirggered when any of the 2 inputs is triggered , the point is I can't evaluate and expression when I don't receive any input of a variable, for example:

MQTT AI triggers the AIDOMOTICS function , but in that moment there is no user intervention , so AIDOMOTICS function will not know the state if the UI input.

I guess this could be solved using GLOBAL or FLOW variables , but I'm not sure how to do it .-

Thank you so much !

16

Do you mean you are trying to combine messages from two different wires into one message so that you can take action based on the values of both at the same time? If so then that is solved in the same way as I suggested for problem 1, using a Join node.

17

Ok , I've tried but the in the join node you must to specify how many entries you will wait till you send the output ,if you select "1" there is not join , if you select "2" , but there is only 1 user interaction , no msg will be sent to the output , the problem is the msg are sent with diferent times , and I can't wait all to pass the message , I think I would need to save the previous state of all entries and if I only receive on , I can pass the previous state of the rest ...

18

Set it to 1 with And Every Subsequent selected. Then you get a message every time with the latest values of all topics in the message. The topic of the message sent tells you which message has triggered the output.

19

Actually that might not be the best solution. It depends on the answers to two questions

  1. What do you want to do on startup if an AI message is received before the first UI message?
  2. What do you want to do on startup if a UI message is received before the first AI message.
20

Well I've seen that on startup , I need to generate click the UI and set values and trigger an AI message to be able to join all togheter and the function to work properly , is there any way to set initial values prior to do a change in the UI so the function value allready has some data to join?