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At the beginning of the year, we wrote about WCH CH32V307 RISC-V microcontroller and a development board with 8 UART ports controlled over Ethernet. I’ve now been informed of a similar, but much more compact by VCC-GND Studio named “YD-CH32V307VCT6”. Besides the 144 MHz RISC-V microcontroller, the board features a 10Mbps Ethernet port, two USB Type-C ports, SPI flash, EEPROM, a microSD card socket, and four rows of 24 pins each for a total of 96 pins exposing all pins out of the LQFP100 package. YD-CH32V307VCT6 board specifications: MCU – WCH CH32V307VCT6 32-bit RISC-V microcontroller @ 144 MHz with 256K Flash, 64K SRAM Storage – 32Mbit SPI NOR flash (W25Q32), 64kbit EEPROM (24C64), MicroSD card slot Networking – 10 Mbps Ethernet USB – 1x USB 2.0 Type-C port (High Speed: 480 Mbps), 1x USB 2.0 Type-C port (Full Speed: 12 Mbps) Expansion – 2x 48-pin headers with 2 x 12-bit [...] The post YD-CH32V307VCT6 RISC-V MCU board comes with Ethernet and plenty of I/Os appeared first on CNX Software - Embedded Systems News. View the full article

Mekotronics R58 is a cost-optimized Rockchip RK3588 mini PC and SBC that sells for as little as $169 with 4GB and 32GB eMMC flash. The company has now sent me a model with 8GB RAM and 64GB flash for evaluation, and in the first part of the review, I’ll do an unboxing, check out the hardware more closely, and boot it up for a quick check. Mekotronics R58 Unboxing There’s no retail package so to speak with just a white box and a sticker reading “MINI 8+64G” indicating the RAM and storage capacity for the device. The mini PC ships with a 12V/3A power adapter and cord, an IR remote control with two AAA batteries, two WiFi antennas, an HDMI cable, and a USB-A to USB-C cable probably to flash the firmware if needed. The mini PC is housed in a metal enclosure with plenty of ventilation holes at the [...] The post Mekotronics R58 review – Part 1: Rockchip RK3588 mini PC unboxing & teardown appeared first on CNX Software - Embedded Systems News. View the full article

Description This commit forces cgroup v1 usage as a workaround for docker / runc BPF issues until a proper fix is submitted Context Docker 20.10+ cannot run on our Asus Tinkerboard, it throws BPF related errors (Like opencontainers/runc#2959 , especially this comment). I tried a lot of armbian flavors (focal, jammy, bullseye + current, edge and legacy kernels), and even building an image with CONFIG_BPF_SYSCALL=y as suggested by this comment but it didn't fix the issue. The only thing that fixed docker was to add extraargs=systemd.unified_cgroup_hierarchy=0 to /boot/armbianEnv.txt. Until someone else does a proper fix to make cgroup v2 working, I suggest downgrading to cgroup v1 with this extraarg. How Has This Been Tested? [x] Tested on Asus Tinkerboard with latest 5.15 stable kernel from apt repository. [ ] :x: NOT tested with edge and legacy kernels (Sorry I had to quickly put the machine into production and didn't have time to test other kernels) Checklist: [x] My code follows the style guidelines of this project [x] I have performed a self-review of my own code [x] I have commented my code, particularly in hard-to-understand areas [ ] I have made corresponding changes to the documentation => Does it need a documentation change ? [x] My changes generate no new warnings [x] Any dependent changes have been merged and published in downstream modules View the full article