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SAE J1939 Address Claim Procedure - SAE J1939/81 Network Management
Network Management under J1939 is primarily represented by the Address Claiming Process. While other higher layer protocols based on Controller Area Network (CAN) do not support dynamic node address assignments per default, the SAE J1939 standard provides this ingeniously designed feature to uniquely identify ECUs and their primary function. SAE J1939/81 prefers the use of CA (Controller Application) rather than ECU [...]
SAE J1939 Turbo Interface Board for Raspberry Pi
A note upfront: The CAN interface board for the Raspberry Pi as described in the following, specifically the firmware code, is under current development. The hardware is ready for production, and the release is targeted for end of February 2017.This post is a follow-up on a previous post Raspberry Pi With CAN Bus Or SAE J1939 [...]
Raspberry Pi With CAN Bus Or SAE J1939 Turbo Interface Board
A note upfront: The CAN interface board for the Raspberry Pi as described in the following, specifically the firmware code, is under current development. The hardware is currently in production, and the release is targeted for the end of February 2017. If you have a special interest in running the SAE J1939 protocol on the Raspberry [...]
CAN Bus Interface For the Raspberry Pi 2/3 Comes With Various Options
The PiCAN2 board series by Copperhill Technologies provides CAN Bus capabilities for the Raspberry Pi 2 or 3. The boards (with the exception of the dual isolated interface) use the Microchip MCP2515 CAN controller in combination with the MCP2551 CAN transceiver. There is an easy to install SocketCAN driver, and programming can be accomplished in C [...]
CAN Bus Data Traffic Simulation With Arduino Due
When working on a CAN bus or SAE J1939 project, it can be extremely helpful when the expected CAN Bus data traffic can be simulated rather than connecting your system to a running vehicle or automation control. The following project does exactly that with little effort for designing CAN data frames and their frequency. As [...]
SAE J1939 to USB Gateway Allows Easy Communication And Analysis Of Truck, Bus Network
The SAE J1939 ECU Simulator Board With USB Port by Copperhill Technologies provides a powerful, yet easy-to-manage connection to a J1939 network, allowing the reception, monitoring & analysis, and transmission of PGNs (Parameter Group Numbers) as defined by the SAE J1939-71 Standard. The gateway supports the full SAE J1939 Standard, including Network Management (Address Claim, SAE J1939/81) and [...]
SAE J1939 ECU Simulator Board - Firmware Update
Our jCOM.J1939.USB gateway board is a high-performance, low-latency vehicle network adapter for SAE J1939 applications. It allows any host device with a USB COM port to monitor SAE J1939 data traffic and communicate with the SAE J1939 vehicle network. The board supports the full SAE J1939 protocol according to J1939/81 Network Management (Address Claiming) and J1939/21 Transport [...]
Simulating SAE J1939 PGNs Used By Truck & Bus FMS (Fleet Management System) Standard
What is the FMS Standard? In the beginning of the 21st century, GPS-based vehicle tracking systems became more and more affordable, but they still could not provide vehicle related technical information. In 2002, six major truck manufacturers (Volvo, Scania, Iveco, MAN, DAF, Mercedes-Benz) decided to create a standardized vehicle interface for these GPS based tracking systems, [...]
SAE J1939 Project With Arduino Uno/Mega2560: Requesting & Simulating Vehicle Identification Number (VIN)
This post describes an Arduino project (sketch) that requests the Vehicle Identification Number (VIN) from an SAE J1939 vehicle network. Before I go into the technical details, let me describe the hardware configuration. First, as shown in the picture, I used an Arduino Uno with a CAN Bus Shield. In order to simulate the SAE J1939 vehicle bus, [...]
Programming the SAE J1939 ECU Simulator Board Using Visual Studio C#
The following refers to a Visual Studio C# application, representing a very simplified version of our jCOM1939 Monitor - SAE J1939 Monitor, Analyzer, And ECU Simulator. The jCOM1939 Monitor Software is a tool to monitor, analyze, and simulate SAE J1939 data traffic. The system combines our jCOM.J1939.USB that functions as an SAE J1939 to USB (or UART) [...]