mcu News - Page 49 of 54 - CNX Software

April 16, 2013March 11, 2014 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

Texas Instruments Announces Tiva Cortex M4 MCUs and $12.99 LaunchPad Evaluation Kit

Texas Instruments has just announced the Tiva ARM MCU platform, and specifically the Tiva C Series TM4C123x ARM Cortex-M4 MCUs, which are the first Cortex-M MCUs to be built on 65 nanometer flash process technology. The Tiva C Series TM4C123x MCUs, formerly known as Stellaris LM4F MCUs, are available now and target home, building and industrial automation. Key features and benefits of Tiva C Series MCUs: MCU Core – ARM Cortex-M4 floating-point core, operating at up to 80 MHz. Mixed-signal applications with high-performance analog integration – 2×12-bit ADC and 3 comparators.12-bit ADC accuracy is achievable at the full 1 MSPS rating without any hardware averaging. On-chip connectivity options – USB (host, device and On-The-Go), UARTs, I2C, SSI/SPI, CAN, etc.. Non-volatile storage of user interface or configuration parameters to reduce system cost – Thanks to integrated EEPROM. Low power – Standby currents as low as 1.6 uA. Large choice of MCU […]

April 12, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Keil RTX RTOS is Now Available for Energy Micro EFM32 MCUs

Energy Micro has recently announced the availability of the Keil RTX real-time operating system (RTOS) as part of its Simplicity Studio tool suite. The Keil RTX has been optimized for ARM Cortex-M processors to provide flexible scheduling and high-speed operation, and has been improved to enable an ultra-low power, deep-sleep mode between tasks. Energy Micro has implemented a tickless mode in Keil RTX. This mode allows the EFM32 Cortex M3 MCUs to wake up only when needed, either at a scheduled time or on an interrupt event. This results in much lower power consumption in sleep mode compared to other SysTick implementations. The video below shows the difference between SYSTICK mode where the system consumes about 2.7mA in active mode, and 830 uA in sleep mode to the new tickless mode where the MCU still consume the same amount of energy in Active mode, but only 1uA in sleep mode, […]

March 20, 2013 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

$19 RFDuino is a Coin-sized Bluetooth Arduino-compatible Board

RFDuino is a tiny board, about the size of a coin, powered by Nordic nRF51822 Cortex M0 SoC including bluetooth 4.0 LE support, and software compatible with Arduino UNO and DUE board, so you can just use Arduino sketches with the board. Bluetooth allows it to communicate with your smartphone (iPhone for now, but Android support is coming) to control motors & relays, monitor sensors, turn LEDs on/off, and more. Key features of RFDuino board: MCU – Nordic nRF51822 Cortex M0 @ 16 MHz Memory – 16 KB on-chip SRAM Storage – 256 KB on-chip Flash Connectivity – Bluetooth 4.0 Low Energy built in MCU GPIO – 7 pin software configurable as digital IO, analog ADC, SPI, I2C, UART and PWM. The company currently offers several stackable shields for RFDuino including battery shields (1x AAA, 2x AAA, and CR2032 coin battery), a servo shield, a USB shield, a prototype shield […]

March 20, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Thingsquare Mist – Open Source Firmware for The Internet of Things

Thingsquare recently released the source code for the Thingsquare Mist firmware, an ultra lightweight router software (<4 kB memory) for the Internet of Things based on open Internet standards such as IPv6, RPL (Routing Protocol for Lossy networks), and 6lowpan. Thingsquare Mist allows to connect battery-powered wireless micro-controllers to the Internet, and is currently used in applications such as smart light bulbs, connected home appliances, and connected cities. The IPv6 mesh network is composted of nodes with a low power radio that communicate with the Mist router (Green), which in turn connect to the Internet and Thingsquare Cloud backend (Thingsquare Haven) to store the data, and/or receive control commands via Ethernet or Wi-Fi. The end users can then use an App to monitor, and/or control the devices remotely. Thingsquare Mist uses IETF RPL IPv6 mesh routing protocol (pronounced “ripple”) for IPv6 nodes communications. Thingsquare Mist runs on several low-power wireless […]

February 27, 2013 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Freescale Unveils Kinetis KL02, an Ultra Small (1.9×2.0mm) ARM Cortex M0+ Microcontroller

Freescale Semiconductor introduced the Kinetis KL02, the world’s smallest ARM MCU, at Embedded World 2013. KL02 is an ARM Cortex M0+ micro-controller designed to address the miniaturization needs of the Internet of things, and its size (1.9×2.0mm) makes it suitable for applications such as ingestible healthcare sensing, portable consumer devices, remote sensing nodes, and wearable devices. Kinetis KL02 MCU features include: 48 MHz ARM Cortex-M0+ core, 1.71-3.6V operation Bit manipulation engine for faster, more code-efficient handling of peripheral registers 32 KB flash memory, 4 KB RAM High-speed 12-bit analog-to-digital converter High-speed analog comparator Low-power UART, SPI, 2x IICI2C Powerful timers for a broad range of applications including motor control Power Efficiency – 15.9 CM/mA (Coremark 1.0) -40 °C to +85 °C operation The MCU is manufactured using chip-scale package (CSP) technology that allows to connect the die directly to the solder ball interconnects and, in turn, to the printed […]

February 11, 2013February 11, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

Infineon Hexagon Application Kit (XMC4500 Enterprise Edition) Overview and Quick Start Guide

A few months ago, Infineon sent me XMC4500 Relax Lite Kit for review, and I wrote a short Getting Started Guide about this 10 Euros Cortex M4 devkit. This month, I’ve received another XMC4500 kit with more features and expansion abilities: XMC4500 Enterprise Edition which is one of their Hexagon Application Kit. I received two packages: CPU Board XMC4500 General Purpose (CPU_45A-V2) with accessories (55 Euros) – This is what you get when you order to Basic Kit. J-Link Lite Cortex-M Debugger (40 Euros) Let’s open the packages and see what’s inside. In the first package, we’ve got XMC4500 CPU board, a pin extension board that can be used on any of the 3 extension connectors of the CPU board to access the signals easily, and a microUSB to USB cable for power. The JLink debugger comes with a 10-pin ribbon cable, and a microUSB to USB cable to connect to the […]

January 31, 2013March 21, 2013 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

ARM MCU Development in Linux with Energy Micro’s Simplicity Studio, Eclipse, and CodeSourcery Toolchain

Quite a few months ago, I received an Energy Micro EFM32 Tiny Gecko Starter Kit, but I haven’t done much with it. But recently I saw a tweet from EnergyMicro about Simplicity Studio supports for Ubuntu, and I know it can be problematic to find proper tools for ARM MCU development in Linux, so I decided to give it a try. The first part is about Simplicity Studio, and energyAwareTools which are specific to Energy Micro, but the second part deals with setting up Eclipse and CodeSourcery ARM toolchain for MCU development which should be reusable for other MCUs from vendors such as Texas Instruments, NXP and STMicro. I’ve used a PC running Ubuntu 12.04 64-bit with the instructions below. Installing Simplicity Studio and energyAwareTools in Ubuntu Simplicity Studio is part of the 4 steps of the getting started guide with EFM32 MCUs. It has been available for Linux for […]

December 13, 2012December 13, 2012 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

Getting Started with Infineon XMC4500 Relax Lite Kit and DAVE 3 IDE

Infineon Relax Lite Kit is a 10 Euros development kit based on Infineon XMC4500 Cortex M4 MCU with 160 KB SRAM and 1 MB flash, and featuring 2 USB OTG ports for debugging and powering up the board, 3 buttons (including reset), 2 LEDs, and 2 headers (through holes) giving access to the signals from the MCU such SPI, I2C, I2S, UART, CAN, ADC, DAC and PMW. The kit if available online via Hitec, but unless you live in Germany, this is not an interesting option, as international shipping costs over 100 Euros. So you’d better check local distributors in your country. The package only comes with the board, and you’ll need a USB to microUSB to power the board. To get started, simply connect the board via the USB cable to one of the USB OTG connectors, and to a Windows PC. The power LED (green) should lit up, […]