Meadow F7v2 Feather STM32F7 MCU board supports .NET, C# programing

STM32 Microsoft .Net

Wilderness Labs Meadow F7v2 Feather is an STM32F7 Arm Cortex-M7 development board following the Adafruit Feather form factor and programmable with C# through a lightweight implementation of the .NET framework. We had previously seen the .NET Framework running on Android and Linux thanks to Xamarin’s Mono, but I don’t think I had ever a microcontroller-class board supporting the .NET framework and C# programming. But that’s exactly what the Meadow F7v2 Feather does. Meadow F7v2 Feather specifications: MCU – STMicro STM32F7 Arm Cortex-M7 microcontroller @ 216 MHz with 2D graphics and JPEG accelerators Memory – 32MB RAM Storage – 64MB flash Connectivity – 2.4 GHz WiFi and BLE (ESP32) with onboard and external u.FL antennas USB – 1x Micro USB port for power and programming Expansion with through and castellated holes with up to 25x GPIO, 12x PWM, 6x analog inputs, 2x DAC, I2C, I2S input/output, SPI, UART, CAN Bus Misc […]

Using Raspberry Pi Pico as a logic analyzer

Raspberry Pi Pico Logic Analyzer

MCU boards, including the $1.5 BluePill board, have been used as cheap logic analyzers for years, notably with Sigrok open-source software. So it should come as no surprise the $4 Raspberry Pi Pico board can also be used as a logic analyzer, with one developer claiming it can deliver 100 Msps, or the performance obtained with a 1.6 GHz CPU, thanks to the PIOs from the Raspberry Pi RP2040. Hackaday reported about a Sigrok driver for the Pico last March, but the topic was brought to our attention via a post on Hackster.io about an open-source Windows program developed from scratch to transform the Raspberry Pi Pico board into a logic analyzer capable of 100 Msps. Agustín Gimenez Bernad (aka gusmanb)’s LogicAnalyzer program offers up to 24 digital channels, pre, and post-trigger sampling, edge trigger and pattern trigger up to 16 bits. It can work with the Raspberry Pi Pico […]

Samsung Unveils Tizen 4.0 with .NET Framework, Low End IoT Devices Support

We’ve already seen the announcement of Samsung ARTIK 053 WiFi module with Tizen RT this morning, but it appears that Tizen RT (Real Time) is part of a Tizen 4.0 that will add support to IoT devices, as well as introduce changes from the developers’ perspective. Samsung Electronics talked a bit more about Tizen Next (Tizen 4.0) at the Tizen Developer Conference (TDC) 2017 taking in place on May 16-17 in San Francisco. Few details are provided in the press released, but we could learn that “the Tizen 4.0 platform has been extended to Tizen RT (Real-Time) to involve high-end products such as TVs and mobile devices as well as low-end products such as thermostats, scales, bulbs, and more”. Tizen RT page explains that the real-time operating system is designed to run on Cortex M/R MCU with less than 2 MB RAM, less than 16 MB flash, and consists of […]

Xibo Digital Signage Version 1.4.0 Released

Xibo has just announced the release of Xibo 1.4.0 (codename: “Brorsen”). Contrary to version 1.3.0 which was a development release, Xibo 1.4.0 is a stable release and you should consider updating your current installations if you want to take advantage of some of the 27 new features and/or 108 bug fixes. This version replaces the previous stable version (1.2.2) released 18 months ago. If you are not familiar with Xibo, it is an open source Client/Server digital signage framework that can run in Windows (.NET implementation) and Linux (Client: Python, Server: LAMP). For some more details, you can read my introduction to Xibo and/or a “getting started” tutorial I wrote some time ago. Main new features in Xibo 1.4.0 Significant improvements to permissions – View, Edit and Delete permissions can now be set on the following items: Library Media Layouts Regions in Layouts Media on Region Timelines DataSets Display Groups […]

Artila M-506 and M-606 ARM9 Industrial Single Board Computers

Artila Electronics announced 2 new single board computers (SBC) based on Atmel SAM9G45 ARM9 Processor: Artila M-506 running Linux 2.6.38 Artila M-606 running Wince 6.0 Both models features the same hardware with a standard 3.5” form factor, Atmel AT91SAM9G45 Processor, 128MB DDR2 RAM, 128MB NAND Flash and 2MB DataFlash and only differ by the operating system and software used. The company explains that the board targets industrial application such as intelligent transportation system (ITS), building automation, energy-saving system, and scenario control systems. Here are the hardware specifications for both devices: CPU – ATMEL AT91SAM9G45 @ 400MHz Memory – 128MB SDRAM Flash – 128MB NAND & 2MB DataFlash for system recovery On-board TTL/LVDS LCD interface Supports 5V/12V TFT LCD panels, up to 1280 x 860 pixels Ethernet: 1x, 10/100Mbps COM port – 3x RS-232, 1x RS-422/485 USB Host – 4x USB 2.0 HS ports. Micro-SD Card – 16GB max. GPIO – […]

Detect Mobile Devices with WURFL in Websites and Mobile Apps

When designing a mobile application or webpage, you may want to know exactly to know what devices access your site or run your application for example to differentiate automatically between desktops, laptops, tablets and smartphones and provide a user interface which is appropriate for a given screen size. This can be achieved with WURFL (Wireless Universal Resource FiLe), a Device Description Repository (DDR). This software component maps HTTP Request headers to the profile of the HTTP client (Desktop, Mobile Device, Tablet, etc.) and provides a description of the capability of the device that made the request. WURFL repository is an xml file (wurfl.xml – Direct links to version 2.3.1:  wurfl-2.3.1.zip or wurfl-2.3.1.xml.tar) containing the definition of thousand of devices which can be access using the WURFL APIs.  Several large Internet companies such as Facebook and Google are using WURFL, and ScientiaMobile, the company behind WURFL, claims that it is the […]

Xamarin Ported Android to C#. Results: Massive Performance Improvements over Dalvik

Xamarin has been providing Mono, a C# framework that can work on Linux for some years, and more recently they have also launched Mono for Android and iOS so that you can write or re-use existing C# application on the most common samrtphone platforms. But their latest project “XobotOS Research Project” goes much further, as they have entirely re-written Android Dalvik engine based on Java with C#. Considering the million of lines of code in Android, they have found a tool to automatize the Java to C# conversion. This tool is an Eclipse plugin called is Sharpen, and Xamarin has made further improvements to Sharpen which are available on Github. They already have ported Android 2.x and Android 4.0 to C#. If you wonder why they would do that, look at the “benchmarks” below showing Mono vs. Dalvik implementation of Android for binary tree, jovian and hashtags. Since the company […]

Mono for Android 4.0 (.NET Framework)

Xamarin has provided .NET support for Linux via the Mono project for a while. It has recently announced the availability of an Android 4.0 version of its Mono software in order to let .NET and C# developers use Microsoft Visual Studio to build Android applications. Mono for Android follows upon Xamarin’s MonoTouch framework for iOS (iPhone and iPad development)  and consists of a plug-in for Microsoft Visual Studio, a core Mono runtime, a Software development and bindings for native Android APIs. Such software is designed to leverage existing .NET applications, libraries and tools for Android development. With Mono for Android, developers can also call upon their native skills in .NET and the C# programming language in developing Android apps. Xamarin says that Mono for Android 4.0 provides access to all the new features, native APIs and UI toolkits in Android 4.0. Mono for Android 4.0 brings those key improvements and […]

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