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ac6 >> ac6-training >> Communications >> Connectivity >> FlexRay 2.1 Télécharger le catalogue Télécharger la page Ecrivez nous Version imprimable

IA2 FlexRay 2.1

This course covers the FlexRay specification version 2.1

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Objectives
  • The course details the hardware implementation and describes the tests required to check the compliance of an equipment.
  • The communication scheme which enables both Time and event-triggered communications is explained.
  • The course focuses on error recovery mechanisms.
  • Implementation examples are described through NXP and Philips existing devices.
A Lecroy analyser is used to capture and display FlexRay traffic.
•  A lot of traces are included in the material.
A more detailed course description is available on request at training@ac6-training.com
Prerequisites
  • Experience of a digital bus is mandatory.

INTRODUCTION TO FLEXRAY
  • History, X-by-Wire
  • Possible topologies
  • Deterministic data transmission
  • Partitioning
  • Security mechanisms
COMMUNICATION SCHEME
  • Time and event-triggered communications
  • Synchronized time-bases on macrotick basis
  • Time division, slot duration and slot number configuration
  • FTDMA dynamic part of a communication cycle
  • Mini-slot allocation
  • Frame format
  • Message oriented addressing via identifiers
  • Symbol transmission
NODE ARCHITECTURE
  • Bus controller
  • SPI interface
  • CPU parallel interface
  • Node wake-up, power saving mode
  • Media Access Control
TRANSFER PROTOCOL
  • Fault-tolerant and time-triggered services
  • Repetitive vs spontaneous message scheduling
  • Dedicated online diagnosis services
  • Redundant transmission channels
  • Robust coding and bit recognition scheme
PHYSICAL LAYER
  • Error detection and signaling
  • Fault confinement in the Time Domain, Bus Guardian
  • Signal level and bit representation
  • Transmission medium
LINK LAYER
  • Fault confinement
  • Error detection and signalling
  • Message validation
  • Message framing
  • Scheduling and access control
TRANSPORT LAYER
  • Status signalling
  • Frame and data handling
  • Frame filtering and masking
ERROR MANAGEMENT SERVICE
  • Stopping communication
  • Loss of synchronization
  • Degradation concept
  • Immediate passivation
  • Error signalling
DEBUGGING A FLEXRAY APPLICATION
  • Compliance checklists
  • Physical layer testing
  • Protocol conformance verification