Forum - Recent Threads

Azure Sphere Starter Kit Availability

koe14 — Wed, 04 Mar 2026 08:26:03 GMT

Hi there, is there any plan to release an Azure Sphere Starter Kit v3 or is Azure Sphere development completely discontinued?

RE: Azure Sphere Starter Kit Availability

iksevas — Thu, 12 Mar 2026 23:01:40 GMT

https://www.avnet.com/americas/products/avnet-boards/avnet-board-families/ms-azure-sphere/

Looking on this page it appears discontinued.

BLE MOD

ehubels — Tue, 29 Aug 2023 19:35:03 GMT

I've bought a couple of BLE MOD's for the AVNET Azure Sphere Developemnt Baord V2. I need to programm the BLE MOD, the Laird documentation tell me I need at least RTS, TXD, RXD, CTS, and RTD exposed. I don't see a USB/TTL programmer that actually exposes all of those, any suggestions?

Erik

RE: BLE MOD

ehubels — Mon, 04 Sep 2023 15:57:20 GMT

Hi Brian,

Got the J-Link EDU Mini, it unfortuntely doesn't support VCOM's, so I don't see it from voor example UwTerminal, have no clou how to make this work, any suggestions would be welcome.

Regards,

Erik

RE: BLE MOD

ehubels — Thu, 31 Aug 2023 15:15:01 GMT

Hi Brian,

Yeap, that's what I figured out, hence the first thing to do is build an example app, yours, so I ordered the J-Link, still cheaper than building one.

RE: BLE MOD

bwilless — Wed, 30 Aug 2023 13:09:44 GMT

ehubels

The Avnet BLE PMOD has a JTAG (mini 10-pin header) that can be used to flash firmware onto the Nordic nRF52840 using a J-Link debugger like the J-Link EDU Mini (segger.com).

I had to flash new firmware onto my BLE PMOD when I developed this blog: (1) Azure Sphere BLE Sensor Monitoring using Laird BT510 devices - element14 Community, however I conveniently glossed over the BLE flashing step.

Hope this helps,

Brian

RE: BLE MOD

ehubels — Wed, 30 Aug 2023 06:54:08 GMT

That is really helpfull, thank you, really appreciate.

Erik

RE: BLE MOD

shabaz — Wed, 30 Aug 2023 02:19:12 GMT

Hi,

If you mean DTR, then you could DIY one:

Building a USB-C USB-UART Board

That one has RXD, TXD, RTS, CTS and DTR. The PCB files are at that link, and Farnell has the Cypress chip in-stock. There may be ready-made USB UART boards with that chip, but I don't know if they expose the pins, whereas that DIY board does. I use that board regularly, although I don't often need the additional flow control pins, and it has been reliable.

I don't know what voltage you need, but that board supports 5V and 3.3V, and 1.8V is possible too, although the 1.8V option needs a wire link patched on the board.

However, perhaps you can use SWD (i.e. using any J-Link programmer, or alternatively use the Laird development kit for that BLE module, which contains an on-board J-Link). I've not used these Laird devices, but I think that SWD may work.

RE: BLE MOD

baldengineer — Tue, 29 Aug 2023 21:17:07 GMT

RTD or DTR?

I don’t know what RTD is.

RE: Azure Sphere Board interrupt

bwilless — Fri, 03 Mar 2023 15:09:49 GMT

There are a few items that may slow you down when developing/debugging real time applications on the MT3620. The recorded webinar at this link element14 Community, can help you understand the nuances of real time development.

Azure Sphere Board interrupt

FrankSteven8877 — Fri, 03 Mar 2023 00:03:33 GMT

Hi.

I am trying to create a program for GPIO interrupt. Seems the High-level application code will not support IRQ. So I created a Real-time applicable application. When I try to run the HelloWorld example code(https://github.com/Azure/azure-sphere-samples/tree/main/Samples/HelloWorld/HelloWorld_RTApp_MT3620_BareMetal), I got an error saying "libusb_open() failed with LIBUSB_ERROR_NOT_FOUND". Is this error because I didn't connect an usb-to-serial adaptor or I don't install the software LIBUSB? Is it possible debug the real-time applicable application code without the usb-to-serial adaptor? Thanks.

RE: Azure Sphere Board interrupt

bwilless — Fri, 03 Mar 2023 00:59:06 GMT

Did you run the enable development command with the enable rt debugging option, as admin?

> azsphere device enable-development --enable-rt-core-debugging

RE: Azure Sphere - How to read and write 16-bit register using I2C

bwilless — Mon, 27 Feb 2023 15:34:51 GMT

shabaz is correct, you need to look at the device datasheet to understand what to send to your device. What device are you using? Have you looked at any of the i2c examples that are available? Once you understand what the device requires, you create the message in your code and send it to the device.

Simple example by MSFT: azure-sphere-samples/Samples/I2C at main · Azure/azure-sphere-samples (github.com).

Look at the ResetAndSetSampleRange() function in main.c line 251 for a working example. Note that a i2c command gets created in a uint8_t array, and the command gets sent to the device.

Azure Sphere - How to read and write 16-bit register using I2C

FrankSteven8877 — Fri, 24 Feb 2023 21:19:53 GMT

I am new to this field. I saw an example of read and write 8-bit register using I2C. How to read and write a 16-bit address register?

Example: the register address is 0x0158, how to use I2CMaster_Read to read the value

Example: the register address is 0x0158, and I want to write 0x01 to this register. How to use I2CMaster_Write to change the value.

RE: Azure Sphere - How to read and write 16-bit register using I2C

shabaz — Fri, 24 Feb 2023 22:36:31 GMT

Hi,

I2C low-level protocol doesn't have a concept of 16-bit registers. If you're new to the field, you really do need to read the I2C specification, it is not very long, or at least the I2C Wikipedia page. That's a good start, because it would have shown you that there are no 16-bit register procedures in the I2C spec itself.

You need to check the datasheet of the device you're trying to communicate to, in order to see what data bytes (yes, 8-bit data bytes) you can send to the device in order for the device to interpret it as a 16-bit register address, if that is what the device needs.

Then, you need to look at the Azure Sphere API and select the best API call to achieve that. Bear in mind, that you don't have 100% flexibility, and not all I2C devices are supported by the API (or at least, that was the case in the past). The API works with many devices, but some devices require certain I2C sequences, that the API might not support. You can check the documentation to pick the appropriate API call after you've determined your requirement (from the device datasheet as mentioned).

RE: Rust on the Azure Sphere

carnegiej — Sun, 15 Jan 2023 03:10:19 GMT

Hi Fred27 , Thank you for jogging my memory and interest in Rust programming for Azure Sphere. The blog post that you cited was published Jun 20 2022. I recall being excited last June when I read it. :-)

I am again excited to share a recent article, "Modernizing embedded development on Azure Sphere with Rust" (https://techcommunity.microsoft.com/t5/internet-of-things-blog/modernizing-embedded-development-on-azure-sphere-with-rust/ba-p/3699383) publshed Jan 11 2023.

Rust on the Azure Sphere

Workshopshed — Wed, 28 Aug 2019 13:07:16 GMT

I've been reading about the Rust language and how it is a safe language compared to C. That seemed like a great property for a secure system.

And that got me thinking about the Azure Sphere and how it might be a good candidate for that platform.

[View:/resized-image/__size/332x226/__key/communityserver-discussions-components-files/244/7612.contentimage_5F00_119409.jpg:332:226]

Gear Teeth (arbyreed) by arbyreed (flickr)

Looks like some people have already done some work on this

https://github.com/vhnatyk/rust-hello-azure-sphere

https://github.com/bjoernQ/rust_azure_sphere_advanced

RE: Rust on the Azure Sphere

Fred27 — Sat, 14 Jan 2023 19:27:56 GMT

Looks like your prediction is coming true...

techcommunity.microsoft.com/.../3494988

Azure Sphere Starter Kit

tomgschneider — Tue, 15 Nov 2022 18:44:43 GMT

Azure Sphere Starter Kit (Rev2) - what is the 5V 3V3 power budget/limit that a Click1 or Click2 module may draw? Goes to "at what load do Click modules have to supply their own power source and voltage regulators" so as not to overload the supplies on the MT3620 motherboard?

RE: Azure Sphere Starter Kit

tomgschneider — Tue, 15 Nov 2022 19:13:52 GMT

Thank you very much. The web documentation seems more of SW user guide and doesn't really address it... unless I didn't find it yet. 🙂

Much appreciated!

RE: Azure Sphere Starter Kit

misaz — Tue, 15 Nov 2022 19:03:24 GMT

I dont know about rev2 but on rev1 there were global limit (at 5V branch) of 1A enforced by protection circuit. 3v3 regulator is dimensed up to 2A, so it do not add any additional limit. To summarize, sum of currents must be less than 1A. Note that some current is consumed by module and other onboard peripherals. Wi-Fi can be very hungry at peaks, so I recoment sourcing up to 750 mA but less is better of course. Maybe there are some other restrictions (for example PCB traces) but I do not find any information about it and I guess in this case Avnet would configure current limiting to lower value.

RE: Azure Sphere STL library using

bwilless — Thu, 17 Feb 2022 13:47:39 GMT

Hi Erik,

I have not done this in any of my projects, but I did a bit of looking around to see if anyone has. I did not find a quick and easy way for you to use c++ vectors, but may have found a path to get you there. I found a couple of examples of using c++ in Azure Sphere High Level applications.

This example uses CMake and creates a c++ application
- Use this example to see how the CMakeLists.txt file defined that it was a c++ application
This example (pre-CMake) has a custom library that includes a vector.* implementation

Brian

Azure Sphere STL library using

ehubels — Wed, 16 Feb 2022 19:59:26 GMT

Need to use <vector> in Azure Sphere high-level app. Can't add with #include <vector>, which is a bit of a surprise, I now think that this is related to managed versus unmanaged in VS. Anyone a suggestion how to use configure VS correctly or how I can use <vector> in high-level app.

Erik

Azure Sphere Webinar Discussion Forum (Post questions and comments here!)

bwilless — Thu, 20 Jan 2022 20:31:27 GMT

I hope everyone that attended todays Azure Sphere Webinar (Session #1) got a lot from the session. Let's use this forum for any questions on the labs, presentations, homework or any other Azure Sphere related questions.

Brian

RE: Azure Sphere Webinar Discussion Forum (Post questions and comments here!)

bwilless — Tue, 25 Jan 2022 00:22:19 GMT

Hi Webinar attendees,

I started to work on my BBQ monitor application today, I've started a blog capturing my work and my development process. I kept it short and sweet,

Brian

(1) Azure Sphere BBQ Monitor - Blog - Azure Sphere Starter Kit - element14 Community