Re: Mixed signal simulation doubts
(I'm not sure whether this got through the first time, so I'm resending) At 05:34 PM 2/25/2003 +0100, Jaime Aguilera wrote: Hi, Is it possible to make a mixed signal simulation, in this case a CT analog circuit embeeded in a DE domain, but instead of using the ODE solver provided in Ptolemy use another circuit simulator. Perhaps a C/C++ link? Does anybody done something? Best Regards Jaime This issue is discussed in some depth in the following paper: http://ptolemy.eecs.berkeley.edu/publications/papers/99/toolinteraction/ In principle, this is possible if the external circuit simulator has a sufficiently open architecture and appropriate semantics. You need, for example, to be able to externally control the advancement of time. The paper above describes interfaces between Ptolemy II and Saber, for example. Java provides a fairly conveninent interface to native code in the form of JNI. Some researchers at Thales recently contributed a fairly convenient mechanism to define components in C/C++ using JNI. One problem with heterogeneous tool chains is maintenance as the tools independently evolve. You really have to be actively involved in the development of both tools to achieve successful intergration, or use fairly mature tools. For example, the Ptolemy II interface to Matlab (provided by RIM) is pretty stable, requiring only small changes with new releases of Matlab. Edward Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Mixed signal simulation doubts
Hi, Is it possible to make a mixed signal simulation, in this case a CT analog circuit embeeded in a DE domain, but instead of using the ODE solver provided in Ptolemy use another circuit simulator. Perhaps a C/C++ link? Does anybody done something? Best Regards Jaime Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Mixed signal simulation doubts
At 05:34 PM 2/25/2003 +0100, Jaime Aguilera wrote: Hi, Is it possible to make a mixed signal simulation, in this case a CT analog circuit embeeded in a DE domain, but instead of using the ODE solver provided in Ptolemy use another circuit simulator. Perhaps a C/C++ link? Does anybody done something? Best Regards Jaime This issue is discussed in some depth in the following paper: http://ptolemy.eecs.berkeley.edu/publications/papers/99/toolinteraction/ In principle, this is possible if the external circuit simulator has a sufficiently open architecture and appropriate semantics. You need, for example, to be able to externally control the advancement of time. The paper above describes interfaces between Ptolemy II and Saber, for example. Java provides a fairly conveninent interface to native code in the form of JNI. Some researchers at Thales recently contributed a fairly convenient mechanism to define components in C/C++ using JNI. One problem with heterogeneous tool chains is maintenance as the tools independently evolve. You really have to be actively involved in the development of both tools to achieve successful intergration, or use fairly mature tools. For example, the Ptolemy II interface to Matlab (provided by RIM) is pretty stable, requiring only small changes with new releases of Matlab. Edward Edward A. Lee, Professor 518 Cory Hall, UC Berkeley, Berkeley, CA 94720 phone: 510-642-0455, fax: 510-642-2739 [EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
Re: Mixed signal simulation doubts
Agilent has, with ADS, if you have a couple of hundred grand to spare. I've tried to run co-simulation on ADS V2001, and wasn't impressed. That was several revisions ago, and it may have gotten better since then. You would need the largest, fastest computer that you can find, though. Dave On Tue, 25 Feb 2003 08:57:49 -0800, you wrote: I don't know of anyone who has done something like this. You could in theory use the Java Native Interface to use a different ODE solver. This would be fairly tricky. The class would need to implement the methods in ptolemy.domains.ct.kernel.ODESolver I've recently spent some time partially integrating a contribution of some JNI code for actors from Vincent Arnould at Thales. JNI can be fairly tricky to use, the platform dependency issues are complex. The configure file in the devel tree now has better support for JNI. -Christopher Hi, Is it possible to make a mixed signal simulation, in this case a CT analog circuit embeeded in a DE domain, but instead of using the ODE solver provided in Ptolemy use another circuit simulator. Perhaps a C/C++ link? Does anybody done something? Best Regards Jaime --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
RE: Mixed signal simulation doubts
Mentor has ADMS and Cadence has AMS which both integrate continuos time simulation (spice engine) with event driven simulators (Verilog, VHDL), switch level simulators and behavioral(VerilogA, VhdlA). I believe taht both companies are planning to integrate SystemC capabilities in these platforms. Fulvio -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Bengtson Sent: Tuesday, February 25, 2003 3:55 PM To: Christopher Hylands Cc: Jaime Aguilera; [EMAIL PROTECTED] Subject: Re: Mixed signal simulation doubts Agilent has, with ADS, if you have a couple of hundred grand to spare. I've tried to run co-simulation on ADS V2001, and wasn't impressed. That was several revisions ago, and it may have gotten better since then. You would need the largest, fastest computer that you can find, though. Dave On Tue, 25 Feb 2003 08:57:49 -0800, you wrote: I don't know of anyone who has done something like this. You could in theory use the Java Native Interface to use a different ODE solver. This would be fairly tricky. The class would need to implement the methods in ptolemy.domains.ct.kernel.ODESolver I've recently spent some time partially integrating a contribution of some JNI code for actors from Vincent Arnould at Thales. JNI can be fairly tricky to use, the platform dependency issues are complex. The configure file in the devel tree now has better support for JNI. -Christopher Hi, Is it possible to make a mixed signal simulation, in this case a CT analog circuit embeeded in a DE domain, but instead of using the ODE solver provided in Ptolemy use another circuit simulator. Perhaps a C/C++ link? Does anybody done something? Best Regards Jaime --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] --- - Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED] Posted to the ptolemy-hackers mailing list. Please send administrative mail for this list to: [EMAIL PROTECTED]
