[SaSa]

thanks @skovarik

we will thank you to inform us in the case you added this option because that’s really necessary for us.

sincerely

• This reply was modified 1 year, 5 months ago by SaSa.

[SaSa]

Dear @jreissmultitech-com,

could you please answer my question above,

thanks,

[SaSa]

dear @david-heitzmanmultitech-com

We are trying to find a way to Pair/Unpair end-devices with an API via DeviceHQ,
Could you please to help us if it’s doable at first ? if yes do you have some examples ?

Thanks,
SaSa

• This reply was modified 1 year, 6 months ago by SaSa.

[SaSa]

Thanks @skovarik, I’ll try with that.

[SaSa]

Thanks @skovarik for your complete answer. I’ll base my researches on model that you proposed us, and let me please to ask you if I had another question,

[SaSa]

@jason fortunately I found something which helped me to command the end-device, I’m not at all sure if it’s logic or not but it works literally and by now : `downlinks = [];

for (var i = 0; i < msg.payload.length; i++) {

downlink = {};
var pay = msg.payload[i].System_Activated;
// let rx_wnd = 1;

if (pay === null ) {
//downlink.payload = new Buffer(“00”, “hex”);
} else {
downlink.payload = new Buffer( “21”+pay, “hex”);
downlink.eui = msg.payload[i].valve_EUI;
downlink.port = 2;
downlink.ack = true;
downlink.delay = 1;
}

downlinks.push(downlink);
}

return [downlinks];`

I think this line of code downlink.delay = 1; changes RX window value to 1

• This reply was modified 1 year, 9 months ago by SaSa.
• This reply was modified 1 year, 9 months ago by SaSa.

[SaSa]

thanks Jason, I’ll try to get by with Mqtt method since I know it’s not so easy.

• This reply was modified 1 year, 9 months ago by SaSa.

[SaSa]

Yes of course. Because in a downlink sent by my function, Rx value is 0 by default (which I try to change) and my valve doesn’t apply command. since when I sent manually exactly the same payload, port, eui, ack but Rx = 1 the valve act exactly what it should.

• This reply was modified 1 year, 9 months ago by SaSa.
• This reply was modified 1 year, 9 months ago by SaSa.

[SaSa]

Thanks Jason,

I check the MQTT method explained in the link but I didn’t get really how I should to adapt this node with a function node. Can I ask you please to propose me an alternative way that I could change it in function ?

[SaSa]

Thanks Jaosn as always. I tested rx_wnd but it didn’t change.

[SaSa]

hi Nada, I don’t think that you could reach it in 0.15.3 version. generally I couldn’t install any node to node-red deployed on gateway.

Cordially.

[SaSa]

do you know please how I should put Rx Window = 1 in a downlink message ?

[SaSa]

so I found the problem and I’ll share it here in case. so easily instead return downlinks,I put return [downlinks]. this lets me to sort them in diferentes messages.

• This reply was modified 1 year, 9 months ago by SaSa.

[SaSa]

ok, I’ll try to better explain you my issue,

first of all this is exactly the format of data that I receive from my database using http request :

[{"ID_Inter":1980,"lumiere":62,"Date_Inter":"2022-06-23T09:31:33.000Z","System_Activated":null,"valve_EUI":"xx-xx-xx-xx-xx-xx-xx-xx"},
{"ID_Inter":1981,"lumiere":62,"Date_Inter":"2022-06-23T09:34:33.000Z","System_Activated":null,"valve_EUI":"xx-xx-xx-xx-xx-xx-xx-xx"},
{"ID_Inter":1982,"lumiere":62,"Date_Inter":"2022-06-23T09:37:33.000Z","System_Activated":10,,"valve_EUI":"xx-xx-xx-xx-xx-xx-xx-xx"}]

Using the code that you sent me, I mean this :

downlinks = [];

for (var i = 0; i < msg.payload.length; i++) {
    
    downlink = {};
    downlink.eui = msg.payload[i].valve_EUI;

    if (msg.payload[i].System_Activated) {
        downlink.payload = new Buffer("01", "hex");
    } else {
        downlink.payload = new Buffer("00", "hex");
    }

    downlink.port = 1;
    downlink.ack = true;
    downlinks.push(downlink);
}

return downlinks;

In result, I see just a downlink sent to the first eui where ID_Inter”:1980. since it should be sent to all devices.

could you help me please to solve this problem, I can’t really understand the logic of this version of node-red.

thanks in advance.

• This reply was modified 1 year, 9 months ago by SaSa.

[SaSa]

thanks Jason,

the code that you sent me works but doesn’t result what I want exactly, It applies just for the first array.

thanks in advance.

[SaSa]

Thanks Jason,
so with your help I could resolve the problem of payload and it sends correctly now.

For the second part, we have some data which arrive from our database using a API request. the aim of this function is just to sort and analyse theses data and redirect them to our End-devices.

data format:

[{"ID":10132,"Humidity":53,"Date_Interpreted":"2022-07-12T04:38:42.000Z","System_Activated":null,,,"valve_EUI":"XX-XX-XX-XX-XX-XX-XX-XX"},{"ID":1970,"Humidity":61,"Date_Interpreted":"2022-06-23T09:01:33.000Z","System_Activated":null,"valve_EUI":"XX-XX-XX-XX-XX-XX-XX-XX"}]

By using this function, we want just to send "system_activated" as "payload" to an end-device with eui : "valve-eui" in a message containing "port = 1", and "ack: true"

Thanks in advance for your help.

[SaSa]

I have another probleme also, when I send a payload to an end-device, but it add something that doesn’t existe in patload.

could you please help me ?

using this code :

msg.eui = "XXXXXXXXXXXXX";
msg.payload = "31";
port = "1" ;
ack = "1";
return msg;

[SaSa]

hello Jason,

hope you are doing great,

In fact I got a question, I’m running a code to aim to recive data from an API and to sort them.

The probleme is that I can see the resulte of this function in node-red v.2.2.2 but not in 0.15.3 ?

var data = [];
for (var i = 0; i < msg.payload.length; i++) {
var Pay = msg.payload[i].System_Activated;
let Dev_eui = msg.payload[i].valve_EUI;

if (msg.payload === null) {
data.push({ payload: “Don’t action”, Dev_eui: Dev_eui, port : “1”, ack: “1” });
} else {
data.push({ payload: Pay, Dev_eui: Dev_eui, port : “1”, ack: “1” });
}
}
data = JSON.stringify(data);
console.log (msg.data);
return {data}`

[SaSa]

Hello Jason,

To be honest i saw your answer which is for 21 jan 2020, and I wanted to ask you pls if any upgrade has released till today for node-red ?

thanks in advance,

[SaSa]

thanks @Miha, I solved this problem. Actually I have another issue. simply I Registered an end-device and we are receiving payloads from correctly. so I tried to add an 2nd end-device. the problem is that I can see both end-device in whitelist and also in config page but any payload in packets.

thank in advance for your help.

[SaSa]

hello Jason Reiss,

I have exactly the same issue. I see end-device s in whitelist and also in config part. I did a restart in LoRa network server but I only have packets from one end-device since I have 3.

Can I ask you what could be the main problem ?

Thanks in advance.

[SaSa]

@jason Reiss, Thank you so much for your help. I’m receving datas now

[SaSa]

Hello @JasonReiss

I wanted ask you pls to help me, to be honest I’m doing exactly the same thing as Tom, but I could not get data using MQTT in node-red. my question is that we should put which server in mqtt ?

thank you in advance for your answer.

[SaSa]

hello all,

I have literally the same problem as you. but I know that my sensor has not a On/Off button. so I put my server identifiers in “payload broker” (as shown in the screenshot).

first of all I wanted to know if the identifiers are in the pertinent place? wjat could be exactly the problem in our case

thank you in advance for your supports and your helps

[Author]

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