STMicro STM32 Category - Page 34 of 40 - CNX Software

December 8, 2016December 9, 2016 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

STMicro SensorTile is a Tiny STM32 Module with Bluetooth 4.1 LE and Four Sensor Chips

STMicroelectronics SensorTile is a 13.5 x 13.5mm sensor board based on STM32L4 ARM Cortex-M4 microcontroller, a MEMS accelerometer, gyroscope, magnetometer, pressure sensor, a MEMS microphone, as well as a 2.4Ghz radio chip for Bluetooth 4.1 Low Energy connectivity for wearables, smart home, and IoT projects. SensorTile hardware specifications: MCU – STMicro STM32L476 ARM Cortex-M4 microcontroller@ up to 80 MHz with 128 KB RAM, 1MB flash Connectivity – Bluetooth 4.1 Smart/LE via BlueNRG-MS network processor with integrated 2.4GHz radio compliant with Sensors LSM6DSM 3D accelerometer + 3D gyroscope LSM303AGR 3D Magnetometer + 3D accelerometer LPS22HB pressure sensor/barometer MP34DT04 digital MEMS microphone I/Os – 2x 9 half holes with access to UART, SPI, SAI (Serial Audio Interface), I2C, DFSDM, USB, OTG, ADC, and GPIOs signals Debugging – SWD interface (multiplexed with GPIOs) Power Supply Range – 2V to 5.5 V Dimensions – 13.5 x 13.5 mm Software development can be done through […]

November 12, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

V-Bridge Muses DTV Modulator and Video Encoder Review – Part 2: Muses-β Turnkey Solution Demo

V-Bridge Muses-α and Muses-β boards can be used to respectively broadcast video to DTV standard from your PC, and as a turnkey solution taking any HDMI, CVBS, or USB inputs. The VATek SoC used in those board support various DTV standards including DVB-T, DVB-C, ATSC/QAM, DTMB, ISDB-T/TB up to full HD resolution. I’ve received an early prototype for each, and I’ve already taken pictures and show how to assemble both Muses-α and Muses-β kits in the first part of the review. Today, I’ll show a demo with Muses-β turnkey solution taking HDMI input from an Android TV box (R-Box Pro), encoding and modulating the video to DVB-T, before broadcast it to an Android STB with a DVB-T/T2 tuner (U4 Quad Hybrid). This tool could be useful to test STB featuring ATSC or ISDB-T too, as those two standards are not supported in my country, and I could instead generate signals […]

October 19, 2016 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

MUSES-α & MUSES-β DVB-T/C, ISDB-T, DTMB & ATSC Modulator Boards Review – Part 1: The Hardware

V-Bridge Muses digital TV modulator boards launched on Kickstarter earlier this month, with the cheaper $200 MUSES-α board modulating video from a PC, and $600 MUSES-β turnkey solution capable of broadcasting HDMI or AV + stereo input to various digital TV standards including DVB-T/C, ATSC/QAM, DTMB, and ISDB-T/TB without the help of a computer. The company sent me the two hardware kits for evaluation and review on CNX Software, and today I’ll start by showing off the hardware I received. I got 3 packages and a F-female to F-female cable, which means you can connect the board directly to your TV tuner without having to rely on actual RF signals, and potential legal issues that goes with it. The first package I open if for the PC modulator kit that include MUSES-α board, an “RF” board, as a USB cable to connect to your computer. MUSES-α board features Vatek A1 […]

September 27, 2016 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

BLE Carbon 96Boards IoT Edition Board Runs Zephyr OS

Linaro Connect Las Vegas 2016 is taking place right now, and the organization has some very interesting development, with a new focus on the Internet of Things thanks to the creation of LITE (Linaro IoT and Embedded) segment group that will work on “delivering end to end open source reference software for more secure connected products, ranging from sensors and connected controllers to smart devices and gateways, for the industrial and consumer markets”. The first LITE IoT Reference Platform release to be made in December 2016, but in the meantime, Linaro introduced 96Board IoT specifications, as well as the first compliant board with the launch of Carbon board (aka BLE Carbon) running Zephyr OS. Carbon 96Boards IoT Edition board specifications: MCU – STMicro STM32F401 ARM Cortex M4 microcontroller @ up to 84 MHz with 512kB Flash, 96kB ram Connectivity – Bluetooth 4.0 LE via Nordic Semi nRF51822 SoC + chip […]

August 2, 2016August 2, 2016 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Samsung JerryScript is a Lightweight Open Source JavaScript Engine for the Internet of Things

In the old days, micro-controller programming was all done in assembly or C, but in recent years higher level languages, included interpreted ones such as Python and JavaScript, have made their ways into MCUs with projects such as MicroPython or Espruino (JS) often running on STMicro STM32 ARM Cortex M micro-controllers, but also other platforms such as ESP8266. As I browsed through the Embedded Linux Conference Europe 2016 schedule, I discovered that Samsung worked on it own implementation of a JavaScript engine for the Internet of Things: JerryScript. It is a full implementation of ECMAScript 5.1 standard written in C that can run on micro-controllers with less than 64KB RAM, and less than 200KB storage (160KB footprint with ARM Thumb-2 compilation). JerryScript is comprised of two main components: Parser and Virtual Machine (VM), with the parser performing translation of input ECMAScript application into byte-code than is then executed by the Virtual […]

July 8, 2016February 27, 2022 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

STMicro STM32 ARM Cortex M3 Boards List and Wiki

STMicro STM32 has popular Cortex-M micro-controller found in the $2 “Blue Pill” board, STMicro’s own Nucleo Board, as well as many other variants. Olavi Kamppari (OliviliK), working on hard real-time control with EmBitz IDE, has created a detailed Wiki for STMicro STM32 on Github with lots of information, including an interesting comparison table of various STM32 Cortex M3 boards (and one GD32 board). I’ve reproduced the table in his wiki below, made is sortable & filterable, and added links to Aliexpress store found in other parts of the wiki. You can find much more details about each board in the Wiki. Thanks to Zoobab for the tip. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011. www.cnx-software.com

June 15, 2016June 15, 2016 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Apache Mynewt RTOS for IoT Includes an Open Source Bluetooth 4.2 LE Stack for MCUs

The Apache Software Foundation has recently released version 0.9 Apache Mynewt open source real-time operating systems for micro-controllers under… an Apache 2.0 license. The RTOS works on STMicro STM32 Cortex-M4, and Arduino Zero / M0 Cortex-M0 boards, but they’ve also implemented the first open source Bluetooth Low Energy stack for MCUs, starting with support for Nordic Semi nRF52 Cortex-M4 and nRF51 Cortex-M1 evaluation boards, and acting as a replacement for Nordic SoftDevice Bluetooth Smart / LE solution. The operating system competes with ARM mbed, the Zephyr Project, and RIoT, but the foundation claims it is the only one that’s both community driven and permissively licensed (Apache 2.0) project in the embedded space. The OS is modular and can be configured with a Go-like build and package management tool with components such as secure boot loader, flash file system and TLV storage mechanism, rich logging infrastructure, circular buffering schemes, and Bluetooth […]

June 9, 2016June 9, 2016 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Frosted OS is an Open Source POSIX Operating System for Cortex-M Micro-controllers

Frosted, which stands for “Free Operating Systems for Tiny Embedded Devices”, is an OS with a POSIX-compliant system call API, borrowing the Linux kernel kconfig for configuration, and currently supporting ARM Cortex M0,M3,M4, and M7 MCU including Texas Instruments Stellaris LM3S, STMicro STM32F4/F7, and NXP LPC17XX micro-controllers. The developers are focusing on IoT applications, as well as porting retro-games such as Doom. The kernel relies on libopencm3 for hardware abstraction, and the operating system can be built with GCC ARM for Frosted using the source code released under a GNU GPLv2 license. The Wiki explains how to build and run the OS on either Qemu (in a Linux computer) used LM3S target, or an STM32F4 Cortex -M4 or STM32F7 Cortex-M7 board. The team also uploaded showing a video of Doom (fdoom) running on STM32F7 board, and possibly adapted from stm32doom port. If you are interested in joining the project you can […]