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Flash loader for vehicle electronic control units

  • US 6,925,365 B2
  • Filed: 08/05/2003
  • Issued: 08/02/2005
  • Est. Priority Date: 08/05/2002
  • Status: Expired due to Term
First Claim
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1. In a vehicle controller having a microprocessor connected to a reprogrammable memory for storing an application program and to a communications port for communicating with a reprogramming device, a flashloader firmware comprising:

  • a standard module for receiving programming instructions and the application program via the communications port;

    an MCU module for writing the received application program to the reprogrammable memory; and

    an ECU module for determining whether a valid application program has been stored in the reprogrammable memory and further for placing the vehicle controller in one of a low power state and a power-down state after a predetermined amount of time;

    wherein upon detection of a valid application program the microprocessor executes instructions from the reprogrammable memory and upon detection of an invalid application program the microprocessor continues to execute instructions from the flashloader.

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