risc-v

Posted on by Jean-Luc Aufranc (CNXSoft) - 22 Comments on Sipeed LicheeRV – A $16.90 Allwinner D1 Linux RISC-V board

Sipeed LicheeRV – A $16.90 Allwinner D1 Linux RISC-V board

Sipeed LicheeRV

Finally! There’s now a much more affordable Allwinner D1 RISC-V Linux board thanks to Sipeed LicheeRV Nezha CM SBC sold for $16.90 and up on Aliexpress, that’s much cheaper than the $100 asked for Nezha SBC, although still not incredibly cheap as we’ll see from the specifications below. Sipeed LicheeRV is actually both a board and a system-on-on-module with an edge connector, and is equipped with 512MB DDR3, a USB-C OTG port, a MicroSD card socket, and an SPI display interface. The dual M.2 edge connector can be plugged into a carrier board, and they will be a “86 Box” (86x86mm) for HMI display that can be used for home automation. Sipeed Lichee RV specifications: SoC – Allwinner D1 single-core XuanTie C906 64-bit RISC-V processor @ 1.0 GHz with HiFi4 DSP, G2D 2D graphics accelerators Memory – 512MB DDR3 memory @ 792 MHz Storage – MicroSD card slot Video – […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on Renesas RH850/U2B automotive SoC features RISC-V-based parallel co-processor

Renesas RH850/U2B automotive SoC features RISC-V-based parallel co-processor

Renesas RH850/U2B

Renesas Electronics RH850/U2B is an automotive SoC designed for electronic control unit (ECU) with used for hybrid ICE and xEV traction inverter, high-end zone control, connected gateways, and vehicle motion applications. The processor includes up to eight 400MHz RH850 32-bit RISC performance cores with four of them in lockstep architecture for ASIL-D and ASIL-B compliance, as well as DR1000C RISC-V-based parallel co-processor (data flow processor) with vector extension (DFP) from NSITEXE designed to support “the fast execution of complex mathematical algorithms”. Renesas RH850/U2B key features & specifications: CPU cores – 400MHz speed for up to 8+4 (LockStep) RH850 G4MH CPUs Memory – Up to 5.1MB RAM on-chip Storage Up to 32MB Flash on-chip SFMA (Serial flash memory interface), eMMC interfaces for external storage Co-Processor – DR1000C RISC-V based MIMD high-performance embedded vector processor Embedded EMU3S (Embedded motor control unit), RDC3X (Position sensor interface), TSG3 (motor timer) for field-oriented traction motor […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 6 Comments on Giveaway Week 2021 winners announced!

Giveaway Week 2021 winners announced!

Giveaway Week 2021 winners

Giveaway Week 2021 is now over, and I’m ready to announce the winners. This year, CNX Software was joined by Rakwireless and Shenzhen Xunlong Software, as I did not have enough hardware to send out. I also had planned to give away Crowbits Master Kit, but when I realized the ESP32 module had a battery, I would have had to ask $100 just for shipping, plus having the risk of messing things up, since I’ve never sent devices with batteries with the new regulations. Nevertheless, the void was filled thanks to the generosity of Rakwireless who offered a solar-powered LoRa GPS tracker, and Shenzhen Xunlong Software who proposed an Orange Pi R1 SBC with a plastic enclosure. Let’s go through the list of winners located in four continents with Europe, North America, Asia, and Oceania represented: NanoPi R2S gateway – Jason, CANADA WisBlock Kit 2 LoRa-based GPS Tracker with Solar […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 148 Comments on Giveaway Week – Bluetrum AB32VG1 RISC-V board

Giveaway Week – Bluetrum AB32VG1 RISC-V board

Bluetrum AB32VG1 RISC-V audio board

The next prize for our once-in-a-year giveaway week is Bluetrum AB32VG1 RISC-V development board based on Bluetrum AB5301A MCU. The board is designed for Bluetooth audio applications as well as general-purpose applications and comes with Arduino headers for expansion. A USB Type-C cable is also included for power and programming. I tested the RISC-V board with RT-Thread open-source operating systems, and let’s say it was quite challenging because development tools need to be improved, but RT-Thread developers are committed to providing a better experience to developers. What’s important is that in the end, after some efforts, I managed to blink an LED and play some music through a pair of speakers connected to the 3.5mm audio jack, and the USB port for power. At the time of review, there was no Bluetooth sample, and a quick look at the documentation shows it may not be available just yet. If you’d […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 8 Comments on Linux 5.15 LTS release – Main Changes, Arm, RISC-V and MIPS architectures

Linux 5.15 LTS release – Main Changes, Arm, RISC-V and MIPS architectures

Linux 5.15

Linus Torvalds released Linux 5.15, an LTS version, this past Sunday: It’s been calm, and I have no excuse to add an extra rc, so here we are, with v5.15 pushed out, and the merge window starting tomorrow. Which is going to be a bit inconvenient for me, since I also have some conference travel coming up. But it’s only a couple of days and I’ll have my laptop with me. Sometimes the release timing works out, and sometimes it doesn’t.. Anyway, the last week of 5.15 was mainly networking and gpu fixes, with some random sprinkling of other things (a few btrfs reverts, some kvm updates, minor other fixes here and there – a few architecture fixes, couple of tracing, small driver fixes etc). Full shortlog appended. This release may have started out with some -Werror pain, but it calmed down fairly quickly and on the whole 5.15 was […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 30 Comments on Build an open source-hardware Allwinner D1s RISC-V Linux SBC for under $10

Build an open source-hardware Allwinner D1s RISC-V Linux SBC for under $10

cheap Allwinner D1s RISC-V SBC

We covered Allwinner D1s RISC-V processor with 64MB built-in RAM a few days ago, and we’ve just found out about Xassette-Asterisk, an open-source hardware board based on the processor that runs Linux (OpenWrt) and is said to cost less than $10 to make. This is significantly cheaper than the Allwinner D1 based Nezha RISC-V Linux SBC currently sold for a little over $100, a rather poor value. The cheaper board will not quite have the same applications with just 64 MB RAM and no HDMI, but it could be great for projects requiring a camera and/or a display, audio interfaces, plus some I/Os. Xassette-Asterisk specifications: SoC – Allwinner D1s single-core 64-bit RISC-V processor @ 1.008 GHz with 64MB DDR2 Storage – MicroSD card slot, 32 MBit SPI flash (W25Q32 – U2 on the board) Display I/F – 40-pin LCD connector, 6-pin touch panel interface, backlight power Camera I/F – 24-pin […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 49 Comments on Allwinner D1s/F133 RISC-V processor integrates 64MB DDR2

Allwinner D1s/F133 RISC-V processor integrates 64MB DDR2

Allwinner F133-A SBC

Allwinner D1s (aka F133) is a cost-down version of Allwinner D1 RISC-V processor introduced earlier this year together with a Linux capable development board, with the main difference being the integrated 64MB DDR2. Besides the built-in RAM, Allwinner D1s comes with many of the same features as D1 RISC-V SoC, but loses HDMI output and the HiFi 4 audio DSP, and Allwinner made some tweaks to the IOs with one less I2S audio interface, and general-purpose ADC. Allwinner D1s/F133 specifications: CPU – RISC core with 32 KB I-cache + 32 KB D-cache (CNXSoft: not specified, but probably the same Alibaba/T-Head Xuantie C906 RISC-V core as used in Allwinner D1) DSP – HiFi4 DSP 600MHz with 32 KB I-cache + 32 KB D-cache, 64 KB I-ram + 64 KB D-ram Memory – 64 MB DDR2 (SIP) Storage I/F – SD3.0, eMMC 5.0, SPI Nor/Nand Flash Video Engine Video decoding H.265 up […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 10 Comments on M5Stamp C3 RISC-V board supports WiFI 4, Bluetooth 5.0 Long Range and 2 Mbps bitrate

M5Stamp C3 RISC-V board supports WiFI 4, Bluetooth 5.0 Long Range and 2 Mbps bitrate

M5Stamp C3

It was only last month that M5Stack launched the M5Stamp Pico module based on an ESP32-PICO-D4 SiP and heat-resistant plastic shell, but M5Stamp C3 board is already out with most of the same specifications and features but an ESP32-C3 RISC-V SoC replaces the ESP32 dual-core Xtensa processor. M5Stamp C3 offers WiFi 4 and Bluetooth 5.0 with high bitrate and long-range connectivity and comes with the same heat-resistant plastic shell, but the company also highlights the RSA-3072-based secure boot and the AES-128-XTS-based flash encryption as a more secure way to address Bluetooth security concerns. M5Stamp C3 specifications: WiSoC – ESP32-C3FH4 32-bit single-core RISC-V processor @ up to 160 MHz, with 384KB ROM, 400KB SRAM, 8KB RTC SRAM, 4MB embedded flash, WiFI and Bluetooth Connectivity 2.4 GHz WiFi 4, 20 MHz and 40 MHz bandwidth, IEEE 802.11 b/g/n protocol, up to 150 Mbps Bluetooth 5, Bluetooth mesh, with supports for 125 Kbps, […]

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