A constraint-based solution for on-line testing of processors embedded in real-time applications

Authors:
Marcelo Moraes;Érika Cota;Luigi Carro;Flávio Wagner;Marcelo Lubaszewski
Affiliations:
Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
Venue:
SBCCI '05 Proceedings of the 18th annual symposium on Integrated circuits and system design
Year:
2005

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Abstract

Software-based self-test has been proposed as a low-cost strategy for on-line periodic testing of embedded processors. In this paper, we show that structural test programs composed only by regular deterministic self-test routines may be unfeasible in a real-time embedded platform. Hence, we propose a method to consciously select a set of test routines from different test approaches to compose a test program for an embedded processor. The proposed method not only ensures the periodical execution of the test, but also considers the optimization of memory and real-time requirements of the application, which are important constraints in embedded systems. Experimental results for a Java processor running real-time tasks demonstrate the effectiveness of the proposed solution.