Dynamic adjustment of ecu calibations

An electronic control unit (ECU) for a powertrain system, the ECU comprising:

• a microcontroller including a volatile memory and a core, the core including a nonvolatile core memory, a volatile core memory, and a processor, the processor being in operative communication with the nonvolatile core memory, the volatile core memory, and the volatile memory, the nonvolatile core memory configured to store a first value of a first calibration parameter;
• and
• an interface operatively coupled with the microcontroller and adapted to receive calibration communications from a calibration tool external to the ECU;
• wherein the ECU is configured to:
• control operation of the powertrain system by first executing a control operation with the processor using the first value of the first calibration parameter stored in the nonvolatile core memory and a first run time value stored in the volatile core memory,
• receive with the interface a tuning message including a tuning value directed to the first value of the first calibration parameter stored in the nonvolatile core memory, the tuning value differing from the first value,
• redirect the tuning value to be stored by the volatile memory, and
• in response to the tuning message, control operation of the powertrain system by second executing the control operation with the processor using the tuning value stored in the volatile memory and a second run time value stored in the second volatile core memory.

A system for controlling operation of a powertrain, the system comprising:

• an electronic control unit (ECU) including a microcontroller including a volatile memory and a core, the core including a nonvolatile core memory, a volatile core memory, and a processor, the processor being in operative communication with the nonvolatile core memory, the volatile core memory, and the volatile memory, the nonvolatile core memory configured to store a first value of a first calibration parameter and an interface operatively coupled with the microcontroller and adapted to receive calibration communications from a calibration tool external to the ECU, the ECU being configured to perform the acts of:
• first operating to control operation of the powertrain system, the first operating including executing by the processor a control operation using the first value of the first calibration stored in the nonvolatile core memory and a first run time value stored in the volatile core memory;
• receiving via the interface a tuning message including a tuning value directed to the first value of the first calibration parameter stored in the nonvolatile core memory, the tuning value differing from the first value;
• storing the tuning value in the volatile memory, and
• second operating to control operation of the powertrain system, the second operating including second executing by the processor the control operation using the tuning value stored in the volatile memory and a second run time value stored in the volatile core memory.