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Customer's Requirement:
Interface Module

An Interface Module to transmit  controller parameters or software downloads for a diesel motor control system board. The data is read through USB stick at the interface.
Project Scope:
Implementation:
  • Upload and download of controller parameters
  • Error message diagnosis through numerical seven-segment display
  • Connection of motor controller through CAN, RS485
  • USB host functionalities
  • Connection to an existing service computer
  • Development of casing with the customer
  • Optimisation of pruductions costs
  • Workig closely with development, testing equipment manufacturing, and production at the customer's place
Development Environment:
  • Zuken CR5000 (circuit diagrams, layout)
  • Pro Engineer (3D mechanics)
  • Keil MDK-ARM
  • C++ for the NXP-ARM7 Microcontroller
Tasks:
  • Determination of function blocks
  • Providing a power supply with four galvanically isolated output voltages
  • CAN repeater
  • USB 2.0 host interface
  • Ethernet interface for future expansions
  • Impedance controlled routing an layout of strip conductors
  • EMC-compatible wiring
  • Definition of a testing device for batch production
  • Testing of environmental impacts (temperature, vibration, shock, EMC)
  • Development of an API to easy replace the OS
  • Drivers for RS485, CAN, USB  following Posix
  • Communication with HMI with the help of a shell
  • Usage of the OTUSB host stack by OnChip Technologies for the communication with the USB stick
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