ANT Forum

Thank you very very much!      

Now I have a question.

For standard Windows UWP (Development Only!! because there are no signed UWP drivers):

Will a signed UWP driver available in the future? I currently develop app on RPi and another standard PC UWP app to release it on Store.      

My app use some of UWP component. (e.g. ads, MediaElement) And I want the app to release on Windows Store to easy to handle about license.      

Ok, that makes sense too. Maybe Project Centennial (Desktop App Converter) can help me doing it (old desktop SDK running in UWP). Or in case that it didn't work I will just develop another desktop app as ANT connector. It should be easier for user than replace the driver.

By the way. I still need this SDK for RPi. I try the demo yesterday without a problem. I will try connect it to ANT+ sensor today. Thank you for your hard word.      

Ok. It was a bit late (than that time -> https://www.thisisant.com/forum/viewreply/7285/ ) because of my other work (and all of them have a ANT+. Why? I don't know. LOL). But now I can get realtime HR from HRM. The SDK was doing fine. I don't found any problem for now. Thank you.      

Since the download page say "ANT SDK Win UWP [BETA] - Beta release for customer testing and feedback" I think that I should post about what I found with it. Is it okay to post here? or I should do it somewhere else?

I still use ANT dongle with Intel Compute Stick as IoT device (with my old code) for a past month because of some work. But yesterday I manage to do a stress test for UWP ANT SDK with 8 sensors receiver on Raspberry Pi 3 (1 ANT dongle with 8 channels). It work fine with those 4 HRM + 4 cadence sensors without any problem for over a few hours.

This test was really important because I have a problem with python-ant (https://github.com/mvillalba/python-ant) on Raspberry Pi that it can't handle 8 sensors at a time. It will crash within a short time. (and it was the cause that I have to move to Intel Compute Stick as temporary solution) And, not only happen with 8 sensors, sometime it crash with only 2 sensors.

I have a plan to develop the headless mode app. So that maybe the next test. Maybe I will try to connect 2 ANT dongle too 1 RPi at a time. But I didn't have a real use case for multi-dongle now.      

Forgot about this thing. I still can't create new project and add a reference by myself. All I can do now is copy a demo project then edit all the code from it. When I try it with new project it will crash with the command device0 = new ANT_Device(); (it not crash when call ANT_Device device0;) I try to make it look like the demo project by only add ANT_NET_UWP as reference and after a build I see ANT_NET_UWP.dll, ANT.UWPWrappedLib.dll and ANT.UWPWrappedLib.winmd as it should be but still not get what I missed.

Sorry. But I got what I missed. I notice this right after I post it. I have to manually add this capability to Package.appxmanifest. And I didn't see this in readme so it got a lot of time.

     

I short update about those 2 test I post before.

I have a plan to develop the headless mode app. So that maybe the next test. Maybe I will try to connect 2 ANT dongle too 1 RPi at a time. But I didn't have a real use case for multi-dongle now.

I create all new UWP ANT+ headless app and it work fine. It also support multi-dongle too but there some problem. With the first dongle you can just use this code.

but it will crash when you call this one after the first.

I didn't remember if I ever use multi-dongle in one app on my old .net code. But it work with multi-app for sure.
There was some workaround about this problem for now. Maybe you can use try-catch to fix it. But I chose this code.

With this code you can just create any number of ANT_Device. But you have to make sure there is none other headless app (and, if you app was headless app, the running headed app) using ANT dongle run in the same time. With that maybe the try-catch will be the last solution.      

hisoft - 25 July 2016 03:50 PM

I short update about those 2 test I post before.

I have a plan to develop the headless mode app. So that maybe the next test. Maybe I will try to connect 2 ANT dongle too 1 RPi at a time. But I didn't have a real use case for multi-dongle now.

I create all new UWP ANT+ headless app and it work fine. It also support multi-dongle too but there some problem. With the first dongle you can just use this code.

ANT_Device ant1 = new ANT_Device() 

but it will crash when you call this one after the first.

ANT_Device ant2 = new ANT_Device() 

I didn't remember if I ever use multi-dongle in one app on my old .net code. But it work with multi-app for sure.
There was some workaround about this problem for now. Maybe you can use try-catch to fix it. But I chose this code.

static int opennedDevicesNum = 0;
antDevice = new ANT_Device((byte)opennedDevicesNum++, (uint)57600); 

With this code you can just create any number of ANT_Device. But you have to make sure there is none other headless app (and, if you app was headless app, the running headed app) using ANT dongle run in the same time. With that maybe the try-catch will be the last solution.

Hi, could you give me some info about this crash when it happens? For instance, there should be some message string embedded in the ANT_Exception class that tells us what failed during the creation of an ANT_Device object. Can you also share with me any exceptions/warnings/errors thrown by your IDE when the multi-dongle code is run? This will be very helpful in resolving the issue/error.
     

michael.ong - 27 July 2016 08:58 AM

Hi, could you give me some info about this crash when it happens? For instance, there should be some message string embedded in the ANT_Exception class that tells us what failed during the creation of an ANT_Device object. Can you also share with me any exceptions/warnings/errors thrown by your IDE when the multi-dongle code is run? This will be very helpful in resolving the issue/error.

I recreate a crash with this code

The app was pause at breakpoint b1 and b2 then it crash with this output in VS.

The program '[2492] backgroundTaskHost.exe' has exited with code -1073740791 (0xc0000409).

It didn't break at b3 or even b4. It just close itself. And it work fine when I change a code to this.


Sorry. I missed the output it send with send(e). the send(e) was forward a e.toString() over network to me. This is what it say.

ANT_Managed_Library.ANT_Exception: ANTLibrary Exception: Unable to initialize USB:2 at Baud:57600, probably device not present or already in use, or drivers not installed\r\n at ANT_Managed_Library.ANT_Device.startUp(Byte USBDeviceNum, UInt32 baudRate, FramerType frameType, PortType portType, Boolean calledByAutoInit)\r\n at ANT_Managed_Library.ANT_Device..ctor(PortType portType, Byte USBDeviceNum, UInt32 baudRate, FramerType frameType)\r\n at ANT_Managed_Library.ANT_Device..ctor(Byte USBDeviceNum, UInt32 baudRate)\r\n at NetworkANT.Ant..ctor()

     

hisoft - 27 July 2016 09:34 AM

michael.ong - 27 July 2016 08:58 AM

Hi, could you give me some info about this crash when it happens? For instance, there should be some message string embedded in the ANT_Exception class that tells us what failed during the creation of an ANT_Device object. Can you also share with me any exceptions/warnings/errors thrown by your IDE when the multi-dongle code is run? This will be very helpful in resolving the issue/error.

I recreate a crash with this code

try
            {
b1>                ANT_Device antDevice1 = new ANT_Device();
b2>                ANT_Device antDevice2 = new ANT_Device();
            }
            catch (Exception e)
            {
b3>                send(e);
            }
            catch (Exception e)
            {
b4>                send(e);
            } 

The app was pause at breakpoint b1 and b2 then it crash with this output in VS.

The program '[2492] backgroundTaskHost.exe' has exited with code -1073740791 (0xc0000409).

It didn't break at b3 or even b4. It just close itself. And it work fine when I change a code to this.

ANT_Device antDevice1 = new ANT_Device((byte)1, (uint)57600);
ANT_Device antDevice2 = new ANT_Device((byte)2, (uint)57600); 

Thanks I see. I will look into this issue.      

After a few PoC project on Raspberry Pi. Now I start a new one. And this one was my main that running on desktop and I target it to publish on Windows Store.

The question is how can I access ANT_Device from it? In this case I have to use normal driver (not a libusb version in this beta). Can I use the normal Windows library with it? I tried and it cause System.DllNotFoundException with ANT_WrappedLib.dll even I make sure it was there. Or I have to wait for a new release of ANT UWP SDK that support normal driver? Will it support in the future?