Alibaba open sources four RISC-V cores: XuanTie E902, E906, C906 and C910

Alibaba open source RISC-V cores

Alibaba introduces a range of RISC-V processors in the last few years with the Xuantie family ranging from the E902 micro-controller class core to the C910 core for servers in data centers. This also includes the XuanTie C906 core found in the Allwinner D1 single-core RISC-V processor. While RISC-V is an open standard and there’s a fair share of open-source RISC-V cores available, many commercial RISC-V cores are closed source, but Zhang Jianfeng, President of Alibaba Cloud Intelligence speaking at the 2021 Apsara Conference, announced that T-Head had open-sourced four RISC-V-based Xuantie series processor cores, namely Xuantie E902, E906, C906, and C910, as well as related software and tools. Those are not empty words as we can find the RTL for the four cores released on T-Head Semiconductor’s Github account with the first commits having taken place yesterday. Each repository contains the code and instructions to get started, all under […]

OpenBSD 7.0 adds 64-bit RISC-V, improves Apple Arm silicon support

OpenBSD 7.0

OpenBSD 7.0, the 51st release of the UNIX-like operating system, was outed on October 14, 2021, with the introduction of 64-bit RISC-V support for HiFive Unmatched and PolarFire SoC Icicle Kit boards, as well as further improvements to ARM64 targets, notably for Apple Silicon Macs, although it’s not quite ready for general use yet. You’ll find the complete list of new features and updates on the OpenBSD website, but here are some of the highlights: New platforms – OpenBSD 7.0 add 64-bit RISC-V support Extended platforms arm64 Improvements to Apple Silicon Macs support USB 3, NVMe storage, GPIO driver, power management, etc… Enabled LEDs for the LAN7800 chip as found on the Raspberry Pi 3 Model B+. Added Type-C PHY controller found on the Rockchip RK3399. Implemented multicast support to Marvell ARMADA chips Various other changes to mips64, amd64, armv7, powerpc64 Kernel improvements Enabled dynamic tracker (dt) for GENERIC kernels […]

Android 12 source code pushed to AOSP

Android 12 source code AOSP

Google has now pushed Android 12 source code to AOSP (Android Open Source Project), after introducing Android 12 new features and the developer preview in February, and the first Android 12 Beta in May. The latest version of the mobile operating system should become available on recent Google Pixel phones in the next few weeks, followed by phones from Samsung, OnePlus, Oppo, Realme, Tecno, Vivo, and Xiaomi. You can download the code with the following command :

Eventually, there should be an Android 12 tag in the manifest similar to android- But that still means developers can start retrieving the source code to adapt the operating system to their needs, for example, to implement support for single board computers or TV boxes that do not use Android TV OS. The release notes for the source code list of the changes made to Android 12 OS including: Support for Android […]

Open-source Allwinner V3 ISP driver to enable blob-free camera support in mainline Linux

Allwinner V3 ISP Linux driver

Bootlin has just submitted the first patchset for the Allwinner V3 image signal processor (ISP) driver in mainline Linux which should pave the way for a completely open-source, blob-free camera support in Linux using V4L2. There are several blocks in an SoC for camera support including a camera input interface such as MIPI CSI 2 and an ISP to process the raw data into a usable image. Add to this the need to implement the code for sensors, and there’s quite a lot of work to get it all working. Allwinner SDK comes with several binary blobs, aka closed-source binary, but Bootlin is working on making those obsolete, having first worked on Allwinner A31, V3s/V3/S3, and A83T MIPI CSI-2 support for the camera interface driver in the V4L2 framework (and Rockchip PX30, RK1808, RK3128 and RK3288 processors), as well as implemented support for Omnivision OV8865 and OV5648 image sensors earlier […]

Bangle.js 2 JavaScript smartwatch gets an nRF52840 MCU, a new design (Crowdfunding)

Bangle.js 2

The Bangle.js 2 is an upgraded, improved version of the Bangle.js hackable, JavaScript smartwatch based on NordicSemi nRF52832 SoC that was introduced in 2019 with ESPruino open-source firmware. The new watch comes with a new rectangular design, a Nordic Semi nRF52840 SoC that offers four times the RAM, twice the on-chip and external flash, plus an always-on sunlight-readable screen with full touchscreen support, and improved Bluetooth signal strength. Bangle.js 2 specifications: MCU – Nordic Semi nRF52840 Arm Cortex-M4 MCU @ 64MHz  with Bluetooth LE, 256kB RAM, 1MB on-chip flash Storage – 8MB flash Display – 1.3-inch 176×176 always-on 3-bit color LCD display (LPM013M126) with backlight, full touchscreen Connectivity Bluetooth 5.0 LE with advertising, central and peripheral mode support GPS/Glonass receiver Sensors Heart rate monitor 3-axis accelerometer, 3-axis magnetometer Air pressure/temperature sensor Misc – Vibration motor Debugging/Programming – Full SWD debug port on the rear of the watch Battery – 200mAh […]

ANAVI Gardening uHAT adds soil and other sensors to Raspberry Pi (Crowdfunding)

ANAVI Gardening uHAT

We’ve been covering and reviewing ANAVI open-source hardware boards for several years now, either standalone boards based on ESP8266, or add-on boards for Raspberry Pi. The  ANAVI Gardening uHAT is the latest board from Leon Anavi. It is a micro HAT designed for Raspberry Pi Zero to Raspberry Pi 4 SBCs that offers interfaces for soil sensors and other environmental sensors allowing measurements of soil moisture, atmospheric pressure and humidity, temperature with a waterproof sensor, and light intensity for gardening applications. ANAVI Gardening uHAT key features and specifications: Compatibility – Any Raspberry Pi board with a 40-pin GPIO header Storage – EEPROM for uHAT compliance 2x 3-pin headers for capacitive soil moisture sensors connected to Microchip MCP3002 ADC chip 3-pin One-wire terminal block for a waterproof temperature sensor 2x 4-pin I²C headers for additional sensors 10-header with GPIO pins for controlling irrigation systems and peripherals Misc – 2x user LEDs,  […]

PiKVM v3 Raspberry Pi HAT offers KVM over IP on the cheap (Crowdfunding)

PiKVM v3

Last December, we wrote about the inexpensive DIY Pi-KVM board to add KVM over IP to the Raspberry Pi board mentioning PiKVM v3 was in the works with extra features such as onboard ATX power control. It turns out PiKVM v3 HAT has been on Kickstarter for about a month and raised close to $600,000 US from over 2,500 backers with just about two days to go at the time of writing. PiKVM v3 hardware features and specifications: Video & audio capture port – 1x HDMI input up to 1080p50 MIPI CSI-2 interface to Pi to visualize HDMI input USB 1x USB-C console port 1x USB-C power input port USB-OTG pins USB-C OTG port doing the emulation of a USB keyboard, mouse, Virtual CD-ROM or USB Flash Drive, USB-Ethernet, USB-Serial port, etc… Console – RJ45 console port Debugging – UART access pins Expansion SPI and an extra GPIO for the […]

OpenCV AI Kit Lite – A compact 4K Tri-camera kit for computer vision applications (Crowdfunding)

OpenCV AI Kit LIte

The OpenCV AI Kit “OAK-D” now has a little brother with the OpenCV AI Kit Lite equipped with the same Intel Myriad X-based DepthAI solution with three cameras, but in a much compact form factor and a price slashed to as low as $79 and up. Like its predecessor, the OpenCV AI Kit leverage the Myriad X AI accelerator’s capabilities to provide a wide range of real-time computer vision applications, and can be programmed with C++ or Python APIs, as well as graphical user interfaces. OpenCV AI Kit Lite (OAK-D Lite) specifications: Intel Myriad X-based DepthAI with 4 TOPS of AI performance Cameras (made by ArduCam) Color Camera IMX214 (PLCC) with 4208×3120 resolution,  1.348:1 aspect ratio 1/3.1 inch Lens size 81.3 degrees DFOV Focus range 8cm – ∞ Stereo Camera specifications: Omnivision OV07251-G04A-1E (COB) with  640 x 480 resolution, 1.333:1 aspect ratio 1/7.5 inch lens size DFOV: 85.6,HFOV: 72.9, VFOV: […]