Apparatus and method for microcontroller debugging

Details Apparatus and method for microcontroller debugging Apparatus and method for microcontroller debugging

2005-07-05

2005-07-05

Coleman, Eric (Department: 2183)

Electrical computers and digital processing systems: processing

Processing control

Specialized instruction processing in support of testing,...

Reexamination Certificate

active

06915416

ABSTRACT:
Apparatus and method for microcontroller debugging. A preferred embodiment microcontroller integrated circuit comprises debug circuitry on the integrated circuit. The debug circuitry is capable of breaking normal instruction execution based on an address breakpoint, a stack pointer breakpoint, or a single step breakpoint. Upon detection of a valid breakpoint, the debug circuitry substitutes a jump to a debug program instruction in place of the next normal application program instruction. The debug program then may provide microcontroller status to a developer, allowing the developer to debug the application program. Upon completion of the debug program, control of the microcontroller is returned to the application program at the point of interruption.

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