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RE: Development and production programmers for AES-MS-MT3620-M-G-2-TR

bwilless — Fri, 09 Jul 2021 10:20:00 GMT

When you're planning your Azure Sphere production work flow you need to plan for manufacturing tasks/tests that require accessing the Azure Sphere device from a Windows10 PC. The Azure Sphere PC software tools require the use of a USB-to-UART interface chip that exposes these interfaces to a PC in a way that allows the tools to recognize and interact with the Azure Sphere device. Additionally, these tools require that the interface be implemented with the FTDI T4232HQ UART-to-USB interface chip. Microsoft has some documentation on this interface here.

There are two approaches to consider . . .

Approach #1: Include the FTDI device on your final product

With this approach the FTDI interface is included on the final production unit. The connector could be external to the unit or hidden inside the unit.

Pros:

Provides the interface for production activities
Provides the interface for field technicians if needed

Cons:

Adds BOM cost for all units
Exposes the interface for non-authorized technicians
- Note unless the user had access to the devices Azure Sphere Tenant, there not much they could do with the unit other than wipe it clean or manage wifi networks.

Approach #2: Provide connectivity (connector/socket) on the product for an external FTDI programming board

Pros:

Reduces BOM cost for all units
Does not expose the interface for non-authorized technicians, of course clever engineers will always find a way!

Cons:

Requires additional board design with FTDI device and some type of interface cable or socket to connect to production units

Alternative approach

I guess you could also develop a test fixture that you could drop one of the Avnet Azure Sphere modules into that connects to the correct pins to connect a FTDI device on the test fixture. I don't see this as a preferred option because you'll want to run functional tests on your final production units so you would likely still need to implement one of the first two approaches.

Development and production programmers for AES-MS-MT3620-M-G-2-TR

pjschoenke — Tue, 22 Jun 2021 14:05:23 GMT

Hello! One of my customers is developing a product with the Avnet Azure Sphere module: AES-MS-MT3620-M-G-2-TR

What would be the recommended programmers for development and debug initially and then for production of a product for 5000+/year?

Any feedback or input is welcomed and appreciated!

Thanks in advance!

Paul

RE: Development and production programmers for AES-MS-MT3620-M-G-2-TR

pjschoenke — Fri, 09 Jul 2021 02:56:21 GMT

Thanks Brian! That helps and is appreciated!

Can you elaborate more on a suggested solution for a production programmer? Our customer is looking to do about 25K/year of these in production.

Thanks again!

Paul

RE: Development and production programmers for AES-MS-MT3620-M-G-2-TR

bwilless — Thu, 08 Jul 2021 20:36:02 GMT

Hi Paul,

Sorry I did not see this question earlier. The most direct path to developing a product that will leverage the Avnet Azure Sphere Module is to use the Avnet Azure Sphere Starter Kit. The Starter Kit uses the same Azure Sphere Module, and code developed on the Starter Kit can run on the final production unit (assuming you use the same hardware interfaces) with zero changes. Additionally, the Starter Kit has flexible expansion slots that make connecting external sensors and other hardware easy to accomplish.

Check out our Blog with all the Avnet Azure Sphere content here on E14: Avnet Azure Sphere Resources | element14 | Azure Sphere

Let me know if I can help in any way,

Brian

Development and production programmers for AES-MS-MT3620-M-G-2-TR

pjschoenke — Mon, 28 Jun 2021 16:08:25 GMT

Hello! One of my customers is developing a product with the Avnet Azure Sphere module: AES-MS-MT3620-M-G-2-TR

What would be the recommended programmers for development and debug initially and then for production of a product for 5000+/year?

Any feedback or input is welcomed and appreciated!

Thanks in advance!

Paul

Error attempting to link personal account

Sean_Miller — Thu, 25 Jul 2019 21:31:06 GMT

When attempting to set up my Azure account per the Microsoft startup guide, I go to the Azure Portal, click Azure Active Directory-->Users as instructed. Unfortunately, it says "Error, an error occured. Unable to complete due to service connection error, please try again later." It then doesn't provide the necessary +User Add button I need.

Anyone have this issue or know a workaround?

Thanks,

Sean

RE: Error attempting to link personal account

dixonselvan — Wed, 07 Aug 2019 22:11:58 GMT

Thanks for trying. Not sure why it didn’t work for you.

RE: Error attempting to link personal account

Sean_Miller — Wed, 07 Aug 2019 22:09:55 GMT

Unfortunately, with my personal accounts and iPhone, I still get the same message. I was able to create an Azure account that worked, though.

See ya',

Sean

RE: Error attempting to link personal account

dixonselvan — Wed, 07 Aug 2019 18:25:51 GMT

Hey Sean_Miller I guess you are using a new account now. Strange, but I got the same error in my PC but when I viewed the Azure Portal >> Azure Active Directory >> Users in my Phone/ Tablet it worked completely fine without an issue. I had the + New user button.

Give it a shot and let me know what you get.

In PC,

In Smart Phone,

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Tue, 06 Aug 2019 01:21:50 GMT

For the JSON Parser, I found a lightweight one is already part of the AvnetStarterKitReferenceDesign solution. Here is it's GitHub:

https://github.com/kgabis/parson

One less thing. :-)

Sean

Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 14:15:17 GMT

Does anyone have any leads on a tutorial or example code for using the Azure as an HTTP Client with C code?

In my past, I've successfully used C++ on Linux microcontrollers to act in part as an HTTP Client to hit APIs such as Darksky or Nest. I attempted to port the code to the Azure C environment and its definitely tedious - leaving me to think there are probably some Visual Studio references that could readily be used instead.

Thanks,

Sean

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 23:30:27 GMT

I’m using Dark sky. It returns a Json string that has about everything I’d ever need.

Next, I need to see if Microsoft already has a parser I can leverage.

see ya,

Sean

RE: Azure Sphere HTTP Client C Code Example?

peterfenn — Mon, 05 Aug 2019 21:48:11 GMT

Sean

You seem pretty resourceful! Good to hear you have a workaround :-)

PS: Which Weather APIs are you calling? (AccuWeather / Weatherbit / OpenWeatherMap / Dark Sky, etc?)

-Peter

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 20:47:23 GMT

Haven't heard back yet on the forum, but I found this article that talked about how to work around the certificate.

I added this line in the main where the curl is doing all its setopts:

res = curl_easy_setopt(curlHandle, CURLOPT_SSL_VERIFYPEER, false);

It allowed it to return the api. I feel I'm somewhat circumventing security, but, hey, I'm just asking for the current weather.

-Sean

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 16:52:46 GMT

Thanks! I entered a ticket.

I found one post with a similar issue that was resolved, but it was not clear on how he resolved it. So, there is light at the end of the tunnel.

After this, I hope to make it catch web socket hits on a port. Once I got this, I'll have it fully IoT tricked out ready to be an Alexa EndPoint.

See ya',

Sean

RE: Azure Sphere HTTP Client C Code Example?

peterfenn — Mon, 05 Aug 2019 16:27:57 GMT

Sean

Not sure why you are bumping into this. The most efficient way to get quick resolution on this is to:
a) Summarize the issue as succinctly as possible and
b) Post this to the Microsoft MSDN Azure Sphere forum,
...that way we can get Microsoft specialist resources in the loop to advise

Here's the link:
https://social.msdn.microsoft.com/Forums/en-US/home?forum=azuresphere

-Peter

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 16:14:55 GMT

Yes. Have it in there.

Used google and it worked. Tried IFTTT and Yahoo as well. However, they redirect out of the domain which results in a different problem. Putting in the IP addresses directly fixes that, but results in getting the same CA signer not available for verification error.

Looks like in 2015 someone had a similar issue on another platform and it was due to the certificate:

https://www.wolfssl.com/forums/topic702-solved-ca-signer-not-available-for-verification.html

My bets are that I need to change out this file: DigiCertGlobalRootCA.pem

Just don't know where to get it.

When I pulled this off in Linux on a raspberry pi, I used a package titled OpenSSL. It didn't have me do anything with a certificate in the code itself. Perhaps it handled that on its own.

See ya',

Sean

RE: Azure Sphere HTTP Client C Code Example?

peterfenn — Mon, 05 Aug 2019 15:31:43 GMT

Did you update your app_manifest.json file with the URL of the website you are accessing?

ie.

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 15:01:41 GMT

Was able to get the example HTTPS client code to work.

Had it hit www.google.com with success.

However, api.darksky.net and the Nest Thermostat API gave this error

Connected to firebase-apiserver17-tah01-iad01.dapi.production.nest.com (52.4.203.41) port 9553 (#0)
* successfully set certificate verify locations:
*   CAfile: /mnt/apps/011b3254-6b4e-4af1-bc81-22e7f677f4bf/certs/DigiCertGlobalRootCA.pem
  CApath: /etc/certs/
* ALPN, offering http/1.1
*  CA signer not available for verification
* Closing connection 0
curl_easy_perform (curl err=77, 'Problem with the SSL CA cert (path? access rights?)')

Looks like I need to read up on SSL certificates to sort this one out. Looks like I have to find a way to generate a new .pem file that will be acceptable by the nest server, in the above case. Things that make you say "hmmmm???"

See ya',

Sean

RE: Azure Sphere HTTP Client C Code Example?

Sean_Miller — Mon, 05 Aug 2019 14:28:52 GMT

Man, you are helpful and quick! I need to be building my deck today on my day off, but you keep feeding my brain distracting me.

-Sean

RE: Azure Sphere HTTP Client C Code Example?

peterfenn — Mon, 05 Aug 2019 14:25:21 GMT

Sean

There are some HTTP related projects under Microsoft Azure Sphere samples:

https://docs.microsoft.com/en-us/azure-sphere/resources/sample-links

https://github.com/Azure/azure-sphere-samples

-Peter

RE: Error attempting to link personal account

shabaz — Sat, 03 Aug 2019 16:46:45 GMT

Hi Juli,

No problem at all!

You'll be using the platform for collecting data from your device, or for sending data, and for all the processing that is better done remotely. Also for provisioning and downloading applications to the device remotely, and monitoring them. I've not done it so far with Azure, so I'm only guessing, but normally that's what Azure would be used for in these types of scenario.

RE: Error attempting to link personal account

juli15 — Sat, 03 Aug 2019 11:47:06 GMT

Really thank you!

But now the thing is, do I need this Microsoft Azure "Platform" for something? Because all that I thought I needed was to create a user but I already got it, right?

And, on the other hand, now I claimed my device with my new account being "user@mydomain.onmicrosoft.com", what it's supposed to mean that I've claimed my device? What's the whole point on do all this stuff creating accounts and claiming devices?

I've finally got it but I've spent a lot of time and I'm really feeling stupid with all these nonsense things...

Thank you all for your help!

RE: Error attempting to link personal account

Sean_Miller — Sat, 27 Jul 2019 19:33:57 GMT

That got it! I was also glad I got to snag me a domain of choice without adding a bunch of crazy digits while I was at it.

See ya',

Sean

RE: Error attempting to link personal account

shabaz — Sat, 27 Jul 2019 18:49:37 GMT

Hi Sean,

I had an existing hotmail account, but adding Azure capability to that did not allow me to use it with Azure Sphere. Instead, I had to create a totally new Azure account, using the following URL, (i.e. I didn't create the account in a popup):

https://account.azure.com/organization

It resulted in an ...onmicrosoft.com account.

Then, that was the account I used to log in (in the popup) when typing:

azsphere login

This was from the steps here:

https://docs.microsoft.com/en-us/azure-sphere/install/azure-directory-account

in the "Create a new account and directory that are not associated with any other account" section.

I hope this helps.. the instructions are for sure a bit confusing in places, but to be honest all the major cloud providers currently have this issue (and AWS IoT can be just as awkward), simply because there's a certain level of complexity in such large XaaS systems, using today's CLIs for provisioning (and often with browser-based provisioning too).