Jean-Luc Aufranc (CNXSoft), Author at CNX Software - Embedded Systems News

January 21, 2025January 23, 2025 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

PCIe3.0 to Dual M.2 HAT+ for Raspberry Pi 5 features ASMedia ASM2806 PCIe 3.0 switch

We’ve already covered Raspberry Pi HAT+ boards with multiple M.2 sockets with various keyings including the Geekworm X1004 HAT+, Pineboards HatDrive! AI, and HatDrive! Dual with two sockets, and the Geekworm X1011 with four M.2 Key-M sockets. So when I saw Seeed Studio introduced a dual M.2 HAT+ board I initially thought it was uninteresting being a very similar board. However, all aforementioned PCIe to M.2 HAT+ boards are based on either the ASMedia ASM1182e or ASM1184e PCIe Gen2 x1 packet switches with 5GT/s shared bandwidth, and Seeed Studio’s PCIe3.0 to Dual M.2 HAT+ for Raspberry Pi 5 features instead an ASMedia ASM2806 PCIe 3.0 switch supporting up to 8GT/s shared bandwidth through the Raspberry Pi 5’s PCIe Gen3 x1 interface. Seeed Studio PCIe 3.0 to Dual M.2 HAT+ key features and specifications: Supported SBC – Raspberry Pi 5 and potentially other SBCs with a PCIe FFC connector like the […]

January 21, 2025January 21, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

M5Stack LLM630 Compute Kit features Axera AX630C Edge AI SoC for on-device LLM and computer vision processing

M5Stack LLM630 Compute Kit is an Edge AI development platform powered by Axera Tech AX630C AI SoC with a 3.2 TOPS NPU designed to run computer vision (CV) and large language model (LLM) tasks at the edge, in other words, on the device itself without access to the cloud. The LLM630 Compute Kit is also equipped with 4GB LPDDR4 and 32GB eMMC flash and supports both wired and wireless connectivity thanks to a JL2101-N040C Gigabit Ethernet chip and an ESP32-C6 module for 2.4GHz WiFi 6 connectivity. You can also connect a display and a camera through MIPI DSI and CSI connectors. M5Stack LLM630 Compute Kit specifications: SoC – Axera Tech (Aixin in China) AX630C CPU – Dual-core Arm Cortex-A53 @ 1.2 GHz; 32KB I-Cache, 32KB D-Cache, 256KB L2 Cache NPU – 12.8 TOPS @ INT4 (max), 3.2 TOPS @ INT8 ISP – 4K @ 30fps Video – Encoding: 4K; Decoding:1080p […]

January 20, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Linux 6.13 Release – Main changes, Arm, RISC-V, and MIPS architectures

Linus Torvalds has just announced the release of Linux 6.13 on the Linux Kernel Mailing List: So nothing horrible or unexpected happened last week, so I’ve tagged and pushed out the final 6.13 release. It’s mostly some final driver fixes (gpu and networking dominating – normal), with some doc updates too. And various little stuff all over. The shortlog is appended for people who want to see the details (and, as always, it’s just the shortlog for the last week, the full 6.13 log is obviously much too big). With this, the merge window for 6.14 will obviously open tomorrow. I already have two dozen pull requests pending – thank you, you know who you are. Linus Release about two months ago, Linux 6.12 – the new LTS version – brought us real-time “PREEMPT_RT” support that had always required out-of-tree patchsets until now, the completion of the EEVDF (Earliest Eligible […]

January 20, 2025 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Disabling VT-d improves Intel Arc GPU Linux performance on Meteor Lake and newer SoCs

Improve Intel Arc GPU performance Linux VT-d disabled

In this post, I’ll check whether disabling VT-d virtualization support may improve the performance of the Intel Arc GPU in recent Meteor Lake or Lunar Lake SoC using a Khadas Mind Maker Kit with an Intel Core Ultra 7 258V CPU with Intel Arc 140V graphics running Ubuntu 24.10. A few days ago, I read a post on Phoronix about Intel publishing tips to improve the performance of Intel GPUs in Linux: Keep the system updated with the latest kernel and Mesa versions. Ensure SoC firmware is up-to-date. These firmware updates currently require installing the Windows graphics driver; firmware updates via fwupd are in progress. Use Wayland where possible, as it supports additional modifiers for better performance. For MTL (Meteor Lake) and newer integrated GPUs, disable VT-d if virtualization is not needed. For discrete GPUs: Enable ReBAR_ Enable ASPM_ I was especially curious about the line about disabling VT-d virtualization […]

January 18, 2025January 18, 2025 by Jean-Luc Aufranc (CNXSoft) - 13 Comments

Jack Dorsey talk at FOSDEM 2025 may lead to protest

Jack Dorsey, who previously owned Twitter and now runs Block, will be giving a talk at FOSDEM 2025 entitled “Infusing Open Source Culture into Company DNA: A Conversation with Jack Dorsey and Manik Surtani, Block’s head of Open Source” and some people don’t like having a billionaire giving a talk at an open-source event and plan to host a protest. I recently wrote about my own FOSDEM 2025 schedule focusing on embedded systems topics, and while the event is usually non-controversial, I was startled by a tweet by FOSDEM organizers who issued a “statement on planned protests during the upcoming FOSDEM 2025”. I eventually found out that it was related to a post by Drew DeVault who did not appreciate having a billionaire talk during the open-source-focused event. The talk is planned in the Janson venue which is the biggest at the event with a capacity of up to 1,500 […]

January 17, 2025January 17, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

CrowPanel Advance: ESP32-S3 displays with replaceable WiFi 6, Thread, Zigbee, LoRa, and 2.4GHz wireless modules

CrowPanel Advance: ESP32-S3 display with replaceable wireless modules

Elecrow’s CrowPanel Advance is a family of 2.8-inch to 7-inch ESP32-S3 WiFi and BLE displays that supports replaceable modules for Thread/Zigbee/Matter, WiFi 6, 2.4GHz, and LoRa (Meshtastic) connectivity. Those are updates of the CrowPanel (Basic) displays introduced last year. They feature an ESP32-S3-WROOM-1-N16R8 module soldered on the back plus headers taking ESP32-H2, ESP32-C6, SX1262 LoRa transceiver, or nRF2401 2.4GHz wireless MCU. CrowPanel Advance 7-inch specifications: Wireless Module – ESP32-S3-WROOM-1-N16R8 SoC – ESP32-S3 CPU – Dual-core LX7 processor with up to 240MHz Memory – 512KB SRAM, 8MP PSRAM Storage – 384KH ROM Wireless – WiFi 4 and Bluetooth 5.0 with BLE Storage – 16MB flash PCB antenna Storage – MicroSD card slot Display 7.0-inch IPS capacitive touchscreen display with 800×480 resolution (SC7277 driver) Viewing Angle: 178° Brightness: 400 cd/m²(Typ.) Color Depth – 16-bit Active Area – 156 x 87mm Audio Built-in microphone Speaker connector Wireless Expansion ESP32-H2 module with 802.15.4 radio […]

January 16, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

USB-C and Lightning tester features an LCD display showing the voltage of each pin

VBEST’s Tail Insert Detector is a USB-C and Lightning cable/device tester that reports “real-time” current and voltage of each pin on its built-in display for easy debugging and testing. VBEST Tail Insert Detector highlights and specifications: Port compatibility – USB Type-C male and Lightning male ports Display – Color LCD display Features – Real-time current and voltage detection Misc – Push switch for power and display mode Power 5V via USB-C female port (on the side) Built-in battery Dimensions – 52 x 35 (estimated) x 14mm Sadly, there’s not much in the way of documentation, so it’s unclear how many display modes there are. I’m also confused by the “real-time” voltage and current reporting, because we’re also told it takes 5 seconds to detect “abnormal pins”. The VBEST’s device is very similar to the A2C caberQU and C2C caberQU boards used to respectively test USB-A to USB-C and USB-C to […]

January 16, 2025 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Imagination exits the RISC-V CPU market

Imagination Technologies has decided to exit the RISC-V CPU market to redirect its resources to the development of its GPU and AI products. This was reported by eeNews Europe following an interview with the company: Imagination exited its standalone line of CPUs to increase our investment in graphics, AI and compute at the edge which we believe is transformational for our business […] We remain committed to the RISC-V ecosystem and believe this change to our business allows us to partner more easily with the wider ecosystem as providers of the GPU of choice for RISC-V The company announced its entry into RISC-V IP core in 2021 with the introduction of the Catapult 32-bit and 64-bit RISC-V CPU cores, followed by the 32-bit RTXM-2200 real-time core in 2022, and the cost-optimized APXM-6200 RISC-V core was introduced last year. But all those RISC-V CPU cores are gone and won’t be found […]