802.11p News - CNX Software - Embedded Systems News

May 25, 2026May 25, 2026 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Monitor live traffic from V2X signals with V2X2MAP open-source Android app and an ESP32-C5 development board

Yesterday, I wrote about the OpenTrafficMap ESP32-C5 C-ITS receiver board to monitor and potentially optimize traffic using 802.11p / ITS-G5 V2X communication over 5.9 GHz WiFi 6, and map all detected nodes on the OpenTrafficMap website. Peter Holzhauser (Pit711) forked the ESP32-C5 C-ITS receiver firmware to port it to the Waveshare ESP32-C5-WIFI6-KIT development board and added BLE streaming. He also designed the V2X2MAP open-source Android app to interface with the board (since 5GHz WiFi on phones can’t usually handle 802.11p), and a Windows installer to flash the firmware. While the ESP32-C5 C-ITS receiver board integrates an ESP32-C5-WROOM-1 module, a GPS module, and an Ethernet port with PoE, the V2X2MAP project leverages any recent Android smartphone with a USB OTG port and GPS, so you can simply connect most ESP32-C5 boards to monitor live traffic at proximity (a few hundred meters to several kilometers) on your phone including traffic lights, public […]

May 24, 2026May 26, 2026 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

OpenTrafficMap ESP32-C5 C-ITS receiver board can help improve traffic efficiency using 802.11p V2X communication

The ESP32-C5 C-ITS receiver project is an open-source hardware board that gathers data over 802.11p V2X communication from nearby traffic lights, public transportation (buses, trams…), trucks, cars, motorcycles, and even pedestrians to display the results on online maps. It works using the ITS-G5 protocol built on top of 802.11p V2X (Vehicle-to-Everything), which requires a 5.9 GHz WiFi radio, and makes the ESP32-C5 an ideal candidate. The standard requires a C-ITS Station (ITS-S) found in vehicles (on-board units – OBU) or roadside units (RSU) handling both transmission and reception, and a receiver to handle incoming wireless signals, decode C-ITS (Cooperative Intelligent Transport Systems) messages, and feed the data into online maps like OpenTrafficMap (See screenshot below). ESP32-C5 C-ITX receiver specifications: Wireless module – ESP32-C5-WROOM-1 (ESP32-C5-WROOM-1-N16R8 or ESP32-C5-WROOM-1-N8R8) SoC – ESP32-C5 CPU Single-core 32-bit RISC-V processor @ up to 240 MHz Low-power RISC-V core @ 40 MHz acting as the main processor for […]

October 29, 2021 by Jean-Luc Aufranc (CNXSoft) - No Comments

SolidRun i.MX 8XLite SoM embeds DSRC modem, GPS for V2X automotive applications

The GPU-less NXP i.MX 8XLite Cortex-A35/M4 SoC was just announced earlier this month for V2X and IIoT applications, and now SolidRun unveiled the first module based on the new processor with the “i.MX 8XLite System-on-Module”. Also equipped with a RoadLINK SAF5400 safety modem, SolidRun’s Mini SoM targets vehicle telematics, vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications, road infrastructure connectivity, and industrial equipment. SolidRun i.MX 8XLite specifications: SoC – NXP i.MX 8XLite single or dual-cire Cortex-A35 processor @ 1.2 GHz, with Cortex-M4F real-time core System Memory – 1GB LPDDR4 with inline ECC Storage – 8GB eMMC flash Ethernet – NXP TJA1100 100BASE-T1 Automotive Ethernet transceiver Wireless NXP RoadLink SAF5400 DSRC/802.11p (V2X) single modem dual antenna (u.FL connectors) GNSS module for GPS 2x Hirose DF40 board-to-board connectors with: Storage – SD/MMC card, PCIe SSD Ethernet – 100BASE-T1 Automotive Ethernet USB – 2x USB 2.0 PCIe – 1x PCIe Low-speed interfaces – 2x I2C, […]

September 14, 2017September 14, 2017 by Jean-Luc Aufranc (CNXSoft) - No Comments

NXP RoadLink SAF5400 is a Single Chip Secure DSRC/802.11p V2X Platform

Marvell unveiled 88W8987xA wireless SoC for V2X (Vehicle to Everything) applications supporting 802.11p WiFi, and DSRC (Dedicated Short Range Communications) last June, but NXP has recently launched Roadlink SAF5400 which it claims to be the world’s first “automotive qualified, high-performance single-chip DSRC modem” Key features for Roadlink SAF5400: Compliant with IEEE 802.11p, IEEE 1609.4 Compliant with: ETSI EN 302663 – Intelligent Transport Systems (ITS); Access layer specification for Intelligent Transport Systems operating in the 5 GHz frequency band ETSI EN 302571 – Intelligent Transport Systems (ITS); Radiocommunications equipment operating in the 5 855 MHz to 5 925 MHz frequency band; Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive Compliant with ARIB T-109M – 700 MHz Band Intelligent Transport Systems Single channel handling for 802.11p reception/transmission. Includes Channel Switching Optional ECDSA verification: 2000 messages/sec (Brainpool/NIST curves 256 bits) Qualified in accordance with AEC-Q100 grade 2 Host […]

June 15, 2017June 15, 2017 by Jean-Luc Aufranc (CNXSoft) - No Comments

Marvell 88W8987xA Wireless SoC Supports 802.11ac & 802.11p WiFi, Bluetooth 5 for V2X & IVI Automotive Applications

Marvell has introduced the new 88W8987xA wireless chip with 802.11ac, 802.11p and Bluetooth 5 Connectivity for V2X (Vehicle-to-Everything) and IVI (In-Vehicle Infotainment) automotive applications such as Dedicated Short Range Communications (DSRC) systems, and secure wireless Gateway systems. Key features of Marvell 88W8987xA family: Connectivity WiFI – IEEE 802.11ac (wave2) up to 433 Mbps / IEEE 802.11p WAVE (Wireless Access in Vehicular Environments) / 1609.x Bluetooth 5 including Bluetooth Low Energy Angle of Arrival and Departure (AoA/AoD) 2x antenna configuration for Wi-Fi/Bluetooth coexistence Host Interfaces – SDIO 3.0 interface (4-bit SDIO and 1-bit SDIO) @ up to 208 MHz; high-Speed UART interface (for Bluetooth only) Audio Interfaces – Digital audio interfaces (PCM) Temperature Range – -40°C to +105°C (AEC-Q100 Grade 2 Qualification) Package – pin 8×8 mm QFN with wettable flanks The family now includes three pin-to-pin compatible SoCs: 88W8987A with 802.11ac + Qualified Bluetooth 5 Functionality 88W8987PA with 802.11p + […]