METHOD FOR INFLUENCING A CONTROL UNIT AND MANIPULATION UNIT
First Claim
1. A method for influencing a control unit by a manipulation unit, the control unit having a microcontroller a memory having a plurality of memory cells and a debug interface, the debug interface having a monitoring functionality for observing memory content,comprisinga first point in time of the control unit for writing a first value to a first memory cell is detected by means of the debug interface, and a triggering point in time for a processing routine by the manipulation unit is obtained as the result by means of the information transmitted by the debug interface at the first point in time to the manipulation unit, and at a second point in time, a second value is written to the first memory cell by the manipulation unit by the debug interface by the processing routine before the first memory cell is read by the control unit at a third point in time.
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Accused Products
Abstract
A method for influencing a control unit by means of a manipulation unit whereby the control unit has at least one microcontroller, at least one memory having a plurality of memory cells and at least one debug interface, and the debug interface has a monitoring functionality for observing the memory content, and by means of the debug interface a first point in time of the control unit for writing a first value to a first memory cell is detected, and a triggering point in time for a processing routine by the manipulation unit is obtained as the result based on the information transmitted to the manipulation unit by the debug interface at the first point in time, and at a second point in time, a second value is written to the first memory cell by the manipulation unit by means of the processing routine via the debug interface before the first memory cell is read by the control unit at a third point in time.
26 Citations
8 Claims
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1. A method for influencing a control unit by a manipulation unit, the control unit having a microcontroller a memory having a plurality of memory cells and a debug interface, the debug interface having a monitoring functionality for observing memory content,
comprising a first point in time of the control unit for writing a first value to a first memory cell is detected by means of the debug interface, and a triggering point in time for a processing routine by the manipulation unit is obtained as the result by means of the information transmitted by the debug interface at the first point in time to the manipulation unit, and at a second point in time, a second value is written to the first memory cell by the manipulation unit by the debug interface by the processing routine before the first memory cell is read by the control unit at a third point in time.
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8. A manipulation unit for influencing a control unit, wherein the control unit has a microcontroller, a memory and a debug interface, debug interface having a monitoring functionality for observing memory content,
wherein the debug interface is configured to detect a first point in time of writing a first value to a first memory cell and to transmit the first value to the manipulation unit; - the manipulation unit being configured to allow a processing routine to run on the basis of the first point in time transmitted and to determine a second value by the processing routine and to write the second value at a second point in time to the first memory cell by the debug interface before the first memory cell is read by the control unit.
Specification