aLec07_Debugging - Introduction to Embedded Microcomputer...

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Introduction to Embedded Microcomputer Systems Lecture 7.1 Jonathan W. Valvano Recap Logical operations (set, clear, mask, toggle) Shift operations Arithmetic operations (CCR bits) Overview Debugging TExaS Real 9S12DP512 9S12DP512 I/O $0000 to $03FF Ports A,B,E,H,K,J,P,AD0,AD1, M, S, T 14 KiB RAM $0800 to $3FFF 48 KiB ROM $4000 to $FFFF Good data sheets to have available 32 page CPU12 quick reference 458 page CPU12 programming reference datasheets from Freescale Debugging terms that essential mean the same thing Testing Debugging Diagnostics Verification Debugging Actions Functional debugging , input/output values Performance debugging , input/output values with time Tracing , measure sequence of operations Profiling , o measure percentage for tasks, o time relationship between tasks Performance measurement , how fast it executes Optimization , make tradeoffs for overall good o improve speed, o improve accuracy, o reduce memory, o reduce power, o reduce size, o reduce cost Debugging Items Instrumentation, code with add to system Visualization, how we see debugging information Goal of debugging maintain and improve software remedy faults or to correct errors in a program role of a debugger is to support this endeavor
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This note was uploaded on 09/19/2010 for the course E E 16280 taught by Professor Valvano during the Fall '10 term at University of Texas at Austin.

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aLec07_Debugging - Introduction to Embedded Microcomputer...

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