Programming Category - Page 15 of 43 - CNX Software

November 10, 2016November 15, 2016 by Jean-Luc Aufranc (CNXSoft) - 24 Comments

Allwinner H2 Linux & Android SDK, and Allwinner XR819 WiFi Driver Released

Orange Pi Zero is an interesting little ARM Linux board thanks to its low price, but also because it features a new Allwinner H2 / H2+ quad core Cortex A7 processor very similar to Allwinner H3 minus the 4K video decoding part, as well as Allwinner XR819 WiFi module, which I have not seen on any other boards so far. But hardware without software is pretty much useless, so developers will be happy to find out that Allwinner H2 SDK with Linux (lichee) and Android has been released or leaked, and it also includes the Allwinner XR819 WiFi driver. You’ll find the SDK on Zoobab server with three main directory / files: Android folder – Android 4.4.2 SDK lichee folder – Linux 3.4.39 source code. However you’d probably better use Linux 3.4.113 currently released by sunxi-linux, or Linux mainline. The latter does have some limitations, and may or may not […]

October 25, 2016October 25, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

NXP Unveils MCUXpresso Development Tools for LPC and Kinetis Microcontrollers

After NXP bought Freescale, you had development tools for Freescale Kinetis MCUs such as Design Studio or Kenetis SDK, and others such as LPCXpresso for NXP LPC microcontrollers. The company has worked to unifying software and tools support between its ARM Cortex-M MCU families, and has now announced MCUXPresso software and tools for both NXP Kinetis and LPC MCUs. MCUXpresso unifies thousands of Kinetis and LPC microcontrollers under a set of compatible tools including MCUXpresso SDK – Open-source software MISRA-compliant development kit (SDK) with peripherals drivers, wireless & wired connectivity stacks, middleware, real-time OS, getting started guides, API documentation, and application examples. MCUXpresso IDE – Integrated development environment (IDE) for editing, compiling and debugging. It also integrates MCU-specific debugging views, code trace and profiling, multicore debugging, etc… Both free and professional edition of the IDE will be available, and LPCXpressor and previously Freescale Freedom & Tower platforms will be supported. […]

October 15, 2016February 8, 2023 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

HMP, Real-Time Linux and Xenomai – A Look at Three Options to Develop Real-Time Linux Systems on Application Processors

This is a guest post about Heterogeneous Multicore Processing (HMP), Real-Time Linux, and Xenomai to develop real-time Linux systems written by Guilherme Fernandes, Raul Muñoz, Leonardo Veiga, Brandon Shibley, all working for Toradex. Introduction Application processor usage continues to broaden. System-on-Chips, usually powered by ARM Cortex-A cores, are taking over several spaces where small ARM Cortex-M, and other microcontroller devices, have traditionally dominated. This trend is driven by several facts, such as: The strong requirements for connectivity, often related to IoT and not only from a hardware point of view but also related to software, protocols, and security The need for highly interactive interfaces such as multi-touch, high-resolution screens, and elaborate graphical user interfaces; The decreasing price of SoCs, a consequence of its volume gain and new production capabilities. Typical cases exemplifying the statement above are the customers we see every day starting a product redesign upgrading from a microcontroller […]

September 5, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

Tizen Studio 1.0 Replaces Tizen SDK for Smartphones, Wearables and TVs

Tizen has converged all Tizen SDK for mobile, wearables, and TV to Tizen Studio since the beginning of the month, and released Tizen Studio 1.0 for developers interested in developing app for Tizen smartphones, TVs and/or smartwatches such as the latest Samsung Gear S3. So instead, you’ll now be able to select the targets platform and profiles within Tizen Studio. Some of the key changes made to the development environment in Tizen Studio 1.0 include: Launching tools: Installer, Uninstaller, and Package Manager Developing tools: IDE perspective theme, Project Wizard, Certificate Manager, and Menu and tool icons UI tools: UI Builder, Component Designer, and EDC Editor Testing tools: Emulator Testing tools: Dynamic Analyzer for memory and CPU profiling Other improvements in Tizen application development environment Tizen Studio is available for the 32-bit and 64-bit version of Windows, and Ubuntu, as well as for Mac OS with one version with the graphics […]

August 10, 2016 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Google QUIC is a Secure UDP Protocol Aiming to Replace TCP + TLS

A lot of traffic over the Internet goes through secure https connections. Under the hood this requires a 3-way handshake to establish a TCP connection, followed by even more packets exchanged between the client and server to negotiate TLS in order to establish a secure connection. Google is now working one the new experimental QUIC protocol that uses the “send and forget” UDP protocol, together with its own crypto, and its own way to making sure the connection is properly establish. The whole idea about QUIC is to reduce the effect of latency (e.g. ping time) by exchanging less messages to achieve the same secure connectivity. For example, if there’s a 200ms latency between a server and a client, and if a TCP connection requires 4 packets, while a QUIC/UDP connection requires only 1 packet, you’ll save about 600ms. One downside with UDP according to Jim Roskind, designer of QUIC, […]

August 1, 2016August 23, 2016 by Jean-Luc Aufranc (CNXSoft) - 22 Comments

Development Resources for Realtek “Ameba” RTL8710, RTL8711, and RTL8195 WiFi SoCs

We were made aware of a potential ARM based ESP8266 competitor last week with Realtek RTL8710 WiFi modules selling for about $3.5 shipped per unit, and under $2 per unit for larger orders (100+ pieces). Hardware is good, but for a platform to be successful, or even just useful, you also need software support. So I started doing some research into IoT-Tech BBS and asked ICStation for an “SDK” for the module they sold. I ended up on this forum post providing an “Realtek RTL8710 SDK” via Baidu (password: brwp), which turned out to be about the same as the Google Drive link provided by ICStation, and only contain minimal documents, as well as cracked Windows IAR Embedded Workshop and JLink tools. There are also some more technical details in Chinese only in another forum post, and well as B&T RTL8710 module datasheet (PDF). However, if you don’t read Chinese […]

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

Top 10 Programming Languages in 2016 for Embedded Software Development

IEEE Spectrum has published a list of the top programming languages in 2016 for Web, Mobile, Enterprise, and Embedded sectors with rankings created by weighting and combining 12 metrics from 10 sources. So I thought it would be fun to have a look at the top 10 of languages used for embedded software, and the results are: As expected, C and C++ are at the top, but I’m quite surprised that “Arduino” is now considered a programming language, as it is simply based on C/C++. When I worked as an embedded software engineer a few years ago, I personally used C, and Assembly, and to a lesser extend C++ and VHDL. I only recently started to play with Arduino code, and while I’ve heard of most other languages in the list, it’s the first time I’ve ever seen Ladder Logic, probably because it’s designed to program PLCs in industrial control […]

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

Dragino LoRa/GPS HAT Board for Raspberry Pi Sells for $32

There are several ways to play with LoRaWAN protocol on the Raspberry Pi including RisingHF Discovery kit or Cooking Hacks LoRa Shield for Raspberry Pi, but the latter requires you to spend close to $100 just for the shield, the complete Lora discovery kit costs close to $400. Dragino Tech LoRa/GPS HAT board should be a more cost effective way to get started with LoRa on Raspberry Pi, as it sells for $32 + shipping on Tindie. Dragino LoRa/GPS HAT specifications: Connectivity LoRa Semtech SX1276/SX1278 transceiver @ 433/868, or 915 MHz (Country dependent, pre-configured in the factory) 168 dB maximum link budget. +20 dBm – 100 mW constant RF output vs. +14 dBm high efficiency PA. Programmable bit rate up to 300 kbps. GPS L80 GPS module based on Mediatek MT3339 SoC Horizontal Position Accuracy: autonomous <2.5 m CEP. TTFF@-130dBm with EASY (AGPS): Cold Start <15s,Warm Start <5s,Hot start <1s; […]