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| 17:30.20 | chouimat | morning |
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| 18:44.11 | sorphin | chouimat: morning. Still KDE'ing it up? |
| 18:44.24 | prpplague | chouimat: hey bud long time no see |
| 18:45.44 | sorphin | prpplague: what's on the plate today? |
| 18:46.01 | prpplague | sorphin: it's conference call hell thursday |
| 18:46.09 | prpplague | sorphin: status updates on all the projects |
| 18:46.45 | prpplague | sorphin: play around with my WITCH documentation while i am on the conference calls |
| 18:46.46 | prpplague | hehe |
| 18:48.14 | chouimat | sorphin: not as much |
| 18:48.42 | chouimat | prpplague: was kind of busy looking for a new job and taking a few months off |
| 18:48.57 | prpplague | chouimat: understood |
| 18:49.08 | prpplague | chouimat: that's always a "thing" that needs to get done |
| 18:49.53 | chouimat | prpplague: still looking for a job :) but on the bright side my unread books pile is about 50% done :) |
| 18:50.02 | prpplague | hehe |
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| 19:22.13 | jefecomp | Hi everyone. What is "the best" modelling language for embedded systems design? |
| 19:23.15 | prpplague | jefecomp: modeling? |
| 19:23.30 | prpplague | jefecomp: you'll need to be a little more clear about what it is your are trying to model |
| 19:24.52 | jefecomp | the software part of a networking protocol stack, and the interaction among different layers. |
| 19:26.36 | jefecomp | Embedded within a microcontroller, for instance. |
| 19:29.00 | jefecomp | Let me reformulate my question: What is "the best" modelling language to support the design of embedded software? |
| 19:29.41 | MonMotha | you mean something like UML? |
| 19:30.27 | MonMotha | I don't normally see formal modeling languages used for embedded systems. It's normally diagrams, charts, graphs, etc. tailored to express the needed information |
| 19:30.53 | MonMotha | UML in particular is often a poor fit, and it's one of the few formal modeling languages in common use. |
| 19:31.43 | jefecomp | So, it backs to 80's using state charts, finite-state machines, etc.. |
| 19:32.36 | MonMotha | well, assuming your system is best modeled as a state machine |
| 19:32.51 | MonMotha | part of the thing with embedded systems is that there's often a lot of disparate layers |
| 19:33.06 | MonMotha | hardware, low level software, high level software (which is often a state machine of sorts, yes) |
| 19:33.19 | MonMotha | some people do use UML to model certain parts, though I rarely see it |
| 19:33.52 | MonMotha | UML is heavily focused on OOP, and OOP is often not used in small embedded systems, though it is common enough in larger things (e.g. anything big enough to run a "real" OS like Linux) |
| 19:34.13 | MonMotha | I can't imagine trying to detail how the Linux kernel operates using a formal modeling language, though, as an example |
| 19:34.35 | chouimat | shudder |
| 19:35.30 | MonMotha | I mostly see flowcharts, block diagrams, software stack diagrams (showing what subsystem builds/depends on what in the hierarchy), state charts, etc. |
| 19:35.46 | MonMotha | and then schematics, properly drawn, are amazing documentation at the hardware level |
| 19:36.06 | MonMotha | the key to that one is that you have to draw the schematics assuming they're documentation, not just a means to generate a netlist for layout |
| 19:36.58 | jefecomp | right. Thank you very much MonMotha |
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