Modeling and Virtual Prototyping for Embedded Systems on Mixed-Signal Multicores

Abstract

This paper presents a tool for the virtual prototyping of analog and mixed-signal embedded (AMS) systems. The application and platform are modeled on a high (SysML-like) level, while the prototype is simulated on cycle-bit accurate level. In order to run software, we combine the AMS part with a multicore platform, which acts as initiator and controls the AMS part. The synchronization between these different Models of Computation (MoC) can be validated before the generation of the virtual prototype. We present a larger case study to illustrate our approach.

Smart System Modeling and Simulation design of Hemodialysis Machine by SysML with SystemC-AMS

“…Accellera Systems Initiative is trying to standardize them so that an e cient framework for constructing embedded AMS systems may be created. A comprehensive speci cation of the AMS class library can improve the performance of a SystemC AMS solution [27], [28].…”

“…To make an optimum design, we need to have granularity modeling, ne and accurate power consumption analysis, and heterogeneous support. The COSEDA tool [27] The VCD trace format is used in the SystemC standard tracing technique. The parameter activity is recorded in the trace format during communication.…”

Scalability of TTool's AMS extensions: a case study

“…IV. QUESTIONS RAISED Until now, applications modeled with the recent extension of TTool ran basically on mono processors, even if, as mentioned in [9], SoCLib is designed for MPSoC virtual prototypes. But does this also hold for multiple sensors connected by multiple GPIO and for a MPSoC with multiple processors?…”

“…Secondly, in the presence of multiple TDF clusters, addressed by different parts of the software running on the SoCLib MPSoC, read and write operations between the digital and analog part must be handled carefully. Not only must causality between TDF and DE be respected as shown in [2], [9], also the semantics of accesses by several analog blocks to the same digital block and vice versa must be preserved. Thirdly, the GPIO interface is to date limited to transmitting only one value at a time, of a basic type.…”

“…Co-simulation of heterogeneous embedded systems then requires a high-level representation that includes high-level models of AMS and RF components. In the approach we presented in [9] software is run on the digital multiprocessor system on chip (MPSoC) platform, but has to communicate with the analog part. Whereas that work took as a starting point an analog application where only the controller was defined as a task running on a SoC, [13] presented a full methodology on a toy example.…”