RE: Implementing Direct Methods in Azure Sphere

Fred27 — Mon, 23 Sep 2019 14:28:03 GMT

Agreed - another very nice article. I'm already using Direct Methods in my project so had to work all this out myself.

If you have used Direct Methods to implement features or functionalities in your own IoT deployment, please add a comment with a high level overview of what you did. This will help other developers generate ideas.

My project is based around Azure AD B2C for user authentication. This then calls through an Azure Function and Azure IoT Hub (using a direct method) to get extra security information from the Azure Sphere device.

RE: Implementing Direct Methods in Azure Sphere

juli15 — Sun, 22 Sep 2019 21:20:25 GMT

Hi! This article is incredible, it's giving me a lot of hints to achieve a little bit more of level with C and IoT! I've implemented your code typed by hand (I say it because I'm afraid this could be the error..). But when I try to compile the code, it's giving me an error which says

" Error implicit declaration of function 'AzureIoT_SetDirectMethodCallback'; did you mean 'DirectMethodCall'? [-Werror=implicit-function-declaration]

AzureIoT_SetDirectMethodCallback(&DirectMethodCall);"

As I've been reading through other websites, it has something to do with being executing functions before declarating them, but in this case, 'AzureIoT_SetDirectMethodCallback' is where we are declaring the function, right? I don't clearly understand what VS is trying to tell... I'm declaring it as you said, in InitPeripheralsAndHandlers

Thank you for all your good work!