Azure Sphere SDK error when developing on Visual Studio project

Owen Atkinson 41

Hello,

I've been developing with the Seeed MT3620 Azure Sphere and working to attach an ArduCAM SPI camera to the board and upload images to an Azure Blob.

It's been going great so far, but I have encountered an error which is being flagged from within a file in the Azure Sphere SDK (Scrt1.o function '_start_c') when I attempt to build the project in Visual Studio 2019.

Full error message: C:/Program Files (x86)/Microsoft Azure Sphere SDK/Sysroots/6/tools/gcc/real-ld.exe: C:/Program Files (x86)/Microsoft Azure Sphere SDK/Sysroots/6/usr/lib/Scrt1.o: in function _start_c': /usr/src/debug/musl/1.1.20+gitAUTOINC+c50985d5c8-r0/git/crt/crt1.c:18: undefined reference to main'

If anyone has seen a similar issue or knows about this error, please get in touch.

Thanks,
Owen

AshokPeddakotla-MSFT 34,016 Reputation points

2020-11-06T15:27:38.833+00:00

@Owen Atkinson Did you get a chance to see the below response? Do let us know the requested information to help you further.

1 answer

AshokPeddakotla-MSFT 34,016 Reputation points

2020-11-04T06:58:33.663+00:00

@Owen Atkinson Thanks for reaching out to us!
Can you please share the documentation you are following for the steps? Does it work before without any errors?

As per the error it appears to be reference is missing or undefined to main method. Please check the code once again and try. It would be great if you can share the code to understand better.
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Owen Atkinson 41 Reputation points

2020-11-10T13:30:42.607+00:00

Hi Ashok, thanks for getting in touch.

You can view my code here: https://github.com/owenatkinson/Azure-Sphere-Arducam.

I've been tinkering with this repository (https://github.com/xiongyu0523/azure-sphere-rtcore-arducam) as I would like to not only extract an image buffer from the device but upload the image buffer to azure blob storage too.

As a result, I've also been referencing this repository (https://github.com/xiongyu0523/azure-sphere-arducam-mini-2mp-plus) as it includes details on uploading the image buffer to azure blob storage.

I need to combine both of these repositories to make it function properly, these are the only examples of this type of work which I can find online.

I hope this has helped to explain the matter.

Thanks,
Owen

AshokPeddakotla-MSFT 34,016 Reputation points

2020-11-18T09:51:29.65+00:00

@Owen Atkinson Thanks for sharing the details. I'm enquiring at the moment and will update you as earliest.

António Sérgio Azevedo 7,666 Reputation points Microsoft Employee

2020-11-24T12:56:33.587+00:00

Hi @Owen Atkinson , we synced internally with @neo xiong and a new commit was done to the repo yesterday: https://github.com/xiongyu0523/azure-sphere-arducam-mini-2mp-plus/commits/master

Can you please checkout the latest release and try it with Azure Sphere SDK 20.04 or later?

Thank you!

Owen Atkinson 41 Reputation points

2020-11-25T14:51:52.577+00:00

Thanks António, this helps a lot.

However, I'm having difficulty detecting the camera even after following hardware instructions on the GitHub page. I'm starting to think perhaps it is a fault in the camera itself. Do you know of any easy ways to debug the camera whilst it's attached to Azure Sphere?

Thanks,
Owen

AshokPeddakotla-MSFT 34,016 Reputation points

2020-11-30T07:35:11.287+00:00

@Owen Atkinson I haven't found any other debugging ways other than what specified on the Github page. I would suggest you, kindly create an issue on the same Github repo and tag Neo for further assistance.
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Azure Sphere SDK error when developing on Visual Studio project

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