Abstract: In this paper we propose a complete system energy model based on
non-intrusive measurements. This model aims at being integrated in fast cycle
accurate simulation tools to give energy consumption feedback for embedded
systems software programming. Estimations take into account the whole system
consumption including peripherals. Experiments on a complex ARM9 platform show
that our model estimates are in error by less than 10% from real system
consumption, which is precise enough for source code application design, while
simulation speed remains fast.