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jefffhaynes / XBee

A .NET library for XBee wireless controllers
MIT License
40 stars 17 forks source link

Broadcast Message #56

Closed koopermark closed 5 years ago

koopermark commented 5 years ago

Hi, Is there a way to broadcast a message so all modules receive it?

I am using XTCU to send messages and picking them up by using controller.DataReceived but I would like to be able to do it the other way round.

Send from the PI to XTCU (multiple xbee's connected) using broadcast so that each Xbee would receive a message - I will then handle the message and send back a response.

Kind Regards

koopermark commented 5 years ago

Hi, Any information on this would be greatly appreciated, I would gladly send a donation if you can help.

jefffhaynes commented 5 years ago

Sorry I’ve been swamped but I believe there is an XBeeAddress.Broadcast value you can use.

From: Mark Cooper notifications@github.com Sent: Tuesday, February 26, 2019 10:11 AM To: jefffhaynes/XBee Cc: Subscribed Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

Hi, Any information on this would be greatly appreciated, I would gladly send a donation if you can help.

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koopermark commented 5 years ago

No worries, on being busy ;-)

I am struggling to understand how to use it XBeeAddress.Broadcast after the following XBeeController controller = controllers.First();

jefffhaynes commented 5 years ago

I think something like await controller.SendDataAsync, no?

From: Mark Cooper notifications@github.com Sent: Tuesday, February 26, 2019 11:56 AM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

No worries, on being busy ;-)

I am struggling to understand how to use it XBeeAddress.Broadcast after the following XBeeController controller = controllers.First();

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koopermark commented 5 years ago

I was trying await controller.Local.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!")); but i seem to get Exception thrown: 'System.InvalidOperationException' in System.Private.CoreLib.ni.dll

jefffhaynes commented 5 years ago

Hm. How are you getting controllers?

From: Mark Cooper notifications@github.com Sent: Tuesday, February 26, 2019 1:50 PM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

I was trying await controller.Local.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!")); but i seem to get Exception thrown: 'System.InvalidOperationException' in System.Private.CoreLib.ni.dll

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koopermark commented 5 years ago

Like this

`namespace test {

public sealed class StartupTask : IBackgroundTask
{

    private BackgroundTaskDeferral deferral;

    public async void Run(IBackgroundTaskInstance taskInstance)
    {
        // 
        // TODO: Insert code to perform background work
        //
        // If you start any asynchronous methods here, prevent the task
        // from closing prematurely by using BackgroundTaskDeferral as
        // described in http://aka.ms/backgroundtaskdeferral
        //

        Debug.WriteLine("Starting Connection");
        deferral = taskInstance.GetDeferral();
        List<XBeeController> controllers = await XBeeController.FindControllersAsync(9600);
        XBeeController controller = controllers.First();
        Debug.WriteLine("Connection Done");

        await controller.Local.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!"));

    }
}

}`

jefffhaynes commented 5 years ago

Looks right to me. That exception is fishy. It seems like a system device issue. Is there any message to go with it?

From: Mark Cooper notifications@github.com Sent: Tuesday, February 26, 2019 4:46 PM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

Like this

`namespace test {

public sealed class StartupTask : IBackgroundTask {

private BackgroundTaskDeferral deferral;

public async void Run(IBackgroundTaskInstance taskInstance)
{
    //
    // TODO: Insert code to perform background work
    //
    // If you start any asynchronous methods here, prevent the task
    // from closing prematurely by using BackgroundTaskDeferral as
    // described in http://aka.ms/backgroundtaskdeferral
    //

    Debug.WriteLine("Starting Connection");
    deferral = taskInstance.GetDeferral();
    List<XBeeController> controllers = await XBeeController.FindControllersAsync(9600);
    XBeeController controller = controllers.First();
    Debug.WriteLine("Connection Done");

    await controller.Local.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!"));

}

}

}`

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koopermark commented 5 years ago

I will check and let you know in the morning. Thank you for your help.

koopermark commented 5 years ago

The error message I get is Can't send data to local device.

jefffhaynes commented 5 years ago

Oh of course. Maybe that should default to broadcast...

I guess there might not be a great way to broadcast right now, which is unfortunate. What happens if you do

await controller.GetNodeAsync(XBeeAddress.Broadcast, ... etc)

and then transmit data to that node?

From: Mark Cooper notifications@github.com Sent: Wednesday, February 27, 2019 6:01 AM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

The error message I get is Can't send data to local device.

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koopermark commented 5 years ago

I get - The name 'XBeeAddress' does not exist in the current context If i change it to await controller.GetNodeAsync(LongAddress.Broadcast);

then I get - cannot convert from 'XBee.LongAddress' to 'XBee.NodeAddress'

jefffhaynes commented 5 years ago

Sorry, I only have my phone here. Can you construct a NodeAddress from a LongAddress?

From: Mark Cooper notifications@github.com Sent: Wednesday, February 27, 2019 7:40 AM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

I get - The name 'XBeeAddress' does not exist in the current context If i change it to await controller.GetNodeAsync(LongAddress.Broadcast);

then I get - cannot convert from 'XBee.LongAddress' to 'XBee.NodeAddress'

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koopermark commented 5 years ago

I added the following ` XBeeNode localNode = controller.Local;

        NodeAddress BroadcastNodeAddress = new NodeAddress(LongAddress.Broadcast);
        Debug.WriteLine(BroadcastNodeAddress);

        try
        {
            await controller.GetNodeAsync(BroadcastNodeAddress);
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
        }

        try
        {
            await localNode.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!"));
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
        }

` and get the following output 000000000000FFFF, FFFE Exception thrown: 'System.InvalidOperationException' in System.Private.CoreLib.ni.dll Can't send data to local device.

jefffhaynes commented 5 years ago

You need to use the returned node.

var remoteNode = await controller.GetNodeAsync(BroadcastNodeAddress);

remoteNode.Transmit...

From: Mark Cooper notifications@github.com Sent: Wednesday, February 27, 2019 8:03 AM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

I added the following ` XBeeNode localNode = controller.Local;

    NodeAddress BroadcastNodeAddress = new NodeAddress(LongAddress.Broadcast);
    Debug.WriteLine(BroadcastNodeAddress);

    try
    {
        await controller.GetNodeAsync(BroadcastNodeAddress);
    }
    catch (Exception ex)
    {
        Debug.WriteLine(ex.Message);
    }

    try
    {
        await localNode.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!"));
    }
    catch (Exception ex)
    {
        Debug.WriteLine(ex.Message);
    }

` and get the following output 000000000000FFFF, FFFE Exception thrown: 'System.InvalidOperationException' in System.Private.CoreLib.ni.dll Can't send data to local device.

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koopermark commented 5 years ago

ok so using the following `NodeAddress BroadcastNodeAddress = new NodeAddress(LongAddress.Broadcast);
Debug.WriteLine(BroadcastNodeAddress);

        var remoteNode = await controller.GetNodeAsync(BroadcastNodeAddress);
        Debug.WriteLine(remoteNode);

        try
        {
            await remoteNode.TransmitDataAsync(Encoding.UTF8.GetBytes("Hello!"));
        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
        }
    Debug.WriteLine("Sent I guess");`

I get the following Connection Done 000000000000FFFF, FFFE XBee.Devices.XBeeSeries2 Sent I guess

There is noting showing in XCTU as being received so i'm not sure if it did - but there are no errors

koopermark commented 5 years ago

scratch that last comment, reloaded XCTU and its working :-) :-) thank you soooo much

A face full of smiles and a tear in the eye

jefffhaynes commented 5 years ago

Phew. Glad to hear it :)

From: Mark Cooper notifications@github.com Sent: Wednesday, February 27, 2019 8:25:03 AM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

scratch that last comment, reloaded XCTU and its working :-) :-) thank you soooo much

A face full of smiles and a tear in the eye

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koopermark commented 5 years ago

How can I repay your effort - buy you a beer / Pizza - PayPal donation

jefffhaynes commented 5 years ago

Ha, thanks. No need, it’s an enjoyable hobby for me.

I’ll probably look at making broadcast a little easier too. Seems confusing as designed.

From: Mark Cooper notifications@github.com Sent: Wednesday, February 27, 2019 9:42 AM To: jefffhaynes/XBee Cc: Jeff Haynes; Comment Subject: Re: [jefffhaynes/XBee] Broadcast Message (#56)

How can I repay your effort - buy you a beer / Pizza - PayPal donation

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koopermark commented 5 years ago

Thanks again, its very much appreciated.