risc-v News - Page 20 of 46 - CNX Software

April 5, 2022May 9, 2022 by Jean-Luc Aufranc (CNXSoft) - 14 Comments

Bee Motion Mini board combines ESP32-C3 with PIR sensor

Designed by Smart Bee Designs, the tiny Bee Motion Mini combines an ESP32-C3 wireless RISC-V SoC with a PIR sensor for motion detection reporting over WiFi, Bluetooth LE, or Bluetooh Mesh. The board was designed to be as small as possible to fit into a 3D printed case with a LiPo battery and placed/hidden anywhere you want. Motion detection range is up to 5 meters, and the Bee Motion Mini can connect to services like MQTT, ITTT, or NodeRed to trigger other devices upon motion. Bee Motion Mini specifications: Wireless module – Espressif Systems ESP32-C3-MINI-1 module with ESP32-C3 WiFi and Bluetooth LE 5.0 RISC-V SoC up to 160 MHz, 4 MB embedded flash PIR sensor – Passive infrared motion sensor with dome lens, 5-meter range I/O- UART Tx/Rx for flashing firmware, 3.3V, and GND Misc – BOOT and RESET buttons Power Supply JST PH.20 connector for LiPo battery 3.3V via […]

March 25, 2022October 21, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Dongshan Nezha STU devkit features Allwinner D1 RISC-V SoM/SBC

Dongshan Nezha STU is a development kit comprised of an Allwinner D1 RISC-V system-on-module (SoM) and a carrier board with three 40-pin headers to access I/Os from the RISC-V processor. While not quite as compact as the Sipeed LicheeRV module, the “Dongshan Nezha STU Core” module also doubles as a standalone single board computer (SBC) with USB-C, Ethernet and HDMI ports, plus a MicroSD card socket for the firmware, which reminds me of the Khadas Edge design. Dongshan Nezha STU specifications: Nezha STU Core SoM 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 (option up to 2GB – TBC) Storage – MicroSD card slot, 2Gbit serial NAND flash (MX35LF1GE4AB); Note the SPI NAND flash (U12) is not populated in the photo below. Video – HDMI port up to 1080p60 Networking – Low-profile Gigabit […]

March 21, 2022March 22, 2022 by Jean-Luc Aufranc (CNXSoft) - No Comments

Linux 5.17 release – Main changes, Arm, RISC-V, and MIPS architectures

Linus Torvalds has just released Linux 5.17: So we had an extra week of at the end of this release cycle, and I’m happy to report that it was very calm indeed. We could probably have skipped it with not a lot of downside, but we did get a few last-minute reverts and fixes in and avoid some brown-paper bugs that would otherwise have been stable fodder, so it’s all good. And that calm last week can very much be seen from the appended shortlog – there really aren’t a lot of commits in here, and it’s all pretty small. Most of it is in drivers (net, usb, drm), with some core networking, and some tooling updates too. It really is small enough that you can just scroll through the details below, and the one-liner summaries will give a good flavor of what happened last week. Of course, this means […]

March 18, 2022March 23, 2022 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

LOLIN C3 Mini ESP32-C3 board is compatible with Wemos D1 Mini shields

Wemos LOLIN C3 Mini board is powered by Espressif ESP32-C3 WiFi and BLE RISC-V microcontroller and follows the company’s earlier Wemos D1 Mini (ESP8266) and LOLIN S2 Mini (ESP32-S2) form factor for compatibility with the original stackable Wemos D1 shields. The tiny board comes with 4MB flash embedded in the ESP32-C3 chip, a USB Type-C connector, reset and user buttons, as well as sixteen through holes for GPIOs, VBUS, 3.3V, and ground signals. LOLIN C3 Mini V1.0.0 specifications: SoC – Espressif Systems ESP32-C3FH4 single-core 32-bit RISC-V (RV32IMC) microcontroller up to 160 MHz with 400 KB SRAM, 4MB Flash Connectivity – 2.4 GHz WiFi 4 and Bluetooth 5.0 LE (in SoC) Expansion headers – 2x 8-pin headers with up to 12x GPIO, ADC, I2C, SPI, UART (3.3V I/O voltage) USB – 1x Type-C USB for 5V power and programming Misc – Reset button and button 0 also used to enter Device […]

March 16, 2022March 16, 2022 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

DevTerm modular Linux terminal gets a RISC-V module compatible with Raspberry Pi CM3

DevTerm R-01 Linux RISV-C modular computer

ClockworkPi DevTerm retro-looking modular portable Linux computer has gotten a 64-bit RISC-V module based on Allwinner D1 1GHz SoC and offers an alternative to existing Arm-based modules such as Raspberry Pi CM3, or alternatives powered by Allwinner H6 or Rockchip RK3399 SoC’s. The new DevTerm Kit R-01 modular & portable terminal has exactly the same specifications with a 6.8-inch IPS screen, a keyboard with 67 keys, and a battery module, all connected to ClockworkPi v3.14 carrier board, but replaces the Arm modules with the R-01 module equipped with the Allwinner D1 processor and 1GB of RAM. DevTerm Kit R-01 kit items: SoM – R-01 Core module with Allwinner D1 single-core 64-bit RISC-V RV64IMAFDCVU processor @ 1.0GHz without GPU, and 1GB DDR3 Carrier board – ClockworkPi v3.14 mainboard Storage – 32GB MicroSD card preloaded with clockworkOS Display – 6.86-inch IPS screen module Audio – Dual speaker Keyboard – Clockwork 65% keyboard […]

March 4, 2022March 4, 2022 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Renesas introduces RZ/Five Linux-capable 64-bit RISC-V microprocessor family

Renesas has launched its first RISC-V processor family with the RZ/Five general-purpose microprocessors based on an Andes AX45MP 64-Bit RISC-V CPU core, and with long-term Linux support via the industrial-grade CIP Linux that offers maintenance for over 10 years. The RISC-V processor is pin-to-pin compatible with the Arm Cortex-A55/M33–based RZ/G2UL processor family, and while being a general-purpose family, the RZ/Five chips are specifically well-suited to IoT endpoint devices such as gateways for solar inverters or home security systems. Renesas RZ/Five key features and specifications: CPU – Single-core 64-bit RISC-V AX45MP core @ up to 1.0 GHz Internal Memory – 128KB SRAM with ECC Memory I/F – 16-bit DDR4-1600 or DDR3L-1333 memory interfaces with in-line ECC; up to 4GB RAM Storage I/F – 2x SD/eMMC interfaces, SPI flash interface Networking – 2x Gigabit Ethernet MAC USB – 2x USB 2.0 Audio – 4-channel serial sound interface (SSI) Serial – 2x CAN/CAN-FD […]

March 1, 2022 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

M5Stamp C3U IoT module relies on ESP32-C3’s own USB interface for firmware programming

M5Stamp C3U is an update of the M5Stamp C3 RISC-V IoT module with heat-resistant cover, support for WiFi 4 and Bluetooth 5.0, that does without CH9102 USB to TTL chip, relying instead on the internal USB interface of ESP32-C3 processor to handle serial programming of the firmware, and gaining on extra GPIO pin in the process. While several ESP32 processors come with a built-in USB interface, many boards still use an external USB to TTL chip such as CH340 or CP2102 to handle the serial interface used for debugging and flashing the firmware likely because of limitations when using ESP32-C3’s USB serial/JTAG controller console, but M5Stack probably considered those to be workable, and the small cost-saving beneficial. M5Stamp C3U 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 […]

February 26, 2022February 26, 2022 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Codasip L31 and L11 RISC-V cores for AI/ML support TFLite Micro, customizations

Codasip has announced the L31 and L11 low-power embedded RISC-V processor cores optimized for customization of AI/ML IoT edge applications with power and size constraints. The company further explains the new L31/L11 RISC-V cores can run Google’s TensorFlow Lite for Microcontrollers (TFLite Micro) and can be optimized for specific applications through Codasip Studio RISC-V design tools. As I understand it, this can be done by the customers themselves thanks to a full architecture license as stated by Codasip CTO, Zdeněk Přikryl: Licensing the CodAL description of a RISC-V core gives Codasip customers a full architecture license enabling both the ISA and microarchitecture to be customized. The new L11/31 cores make it even easier to add features our customers were asking for, such as edge AI, into the smallest, lowest power embedded processor designs. The ability to customize the cores is important for AI and ML applications since the data types, […]