conplement AG Your partner for
embedded software development
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  Automotive
   
  Know-how
  Bus systems

Climate control

Customer/Project:
  • USA OEM, Tier 1, Automotive
  • Development of a software platform for automotive climate control in seven different models

Challenges:
  • Development of software components for several remote and fully integrated climate controls
  • Narrow time frame due to the replacement of the previous supplier on very short notice
  • Specification of requirements in collaboration with the customer

System:
  • 16Bit uc, 125kBit/s CAN
  • DC motors, optical encoder, directly connected sensors
  • OSEK
  • Cygwin, Cosmic Compiler, Lauterbach Debugger, Vector CAN environment

Solution:
  • Requirements specification
  • Software platform design
  • Hardware commision and delivery for pre-series
  • Strategy for parallel, process-compliant development for series production
  • Implementation of diagnostic handling in RTE
  • Fault memory handling (DTCs, EoL-Test)
  • Implementation with CANdela
  • Diagnostic test according to ISO 14229
  • EEPROM memory design
  • Redundant storage & CRC16, EEPROM wearout reduction (emulated on D-flash)
  • Modularisation of software components (driver-application interface)

The major challenges were the numerous variants of climate controls and the narrow time frame. But thanks to our perfectly cooperating team of skilled experts conplement embedded was able to support our customer competently in this development project. The result of this collaboration was a high performance, scalable software platform for the development of a multitude of additional climate controls in the future.
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