Re: [psas-avionics] CAN on the MPC5200 FC: T-3 weeks until a no-go.

2009-02-02 Thread Barton C Massey
In message 498643ed.7060...@psas.pdx.edu you wrote: ...has lots of nice features like data identified packets instead of node addresses, etc. It seemed to me like this particular feature was a pain when we tried this before? I thought we ended up kludging a node addressing scheme that borrowed

Re: [psas-avionics] CAN on the MPC5200 FC: T-3 weeks until a no-go.

2009-02-02 Thread Barton C Massey
In message 20090202020857.stbzev6v68cc4...@webmail.pdx.edu you wrote: An application layer that floods the bus (but doesn't invoke transceiver safeguards) will cause enough error frames that the CAN controller will go bus-off and stop transmitting. So there are limits on the amount of bus

Re: [psas-avionics] CAN on the MPC5200 FC: T-3 weeks until a no-go.

2009-02-01 Thread I
Here we go again... if(OS != Linux) CAN = Easy; In one respect, I agree with Sarah's statement in that the only active node in an FC failure is the recovery node. Nothing else really matters. That said, if you *must* have some sort of non-usb back channel communication, CAN is the way to

Re: [psas-avionics] CAN on the MPC5200 FC: T-3 weeks until a no-go.

2009-02-01 Thread rq17zt
This is my understanding CAN vs USB, USB wins for bulk and high speed data transfer. USB wins for compatibility w/ standard hard/soft ware USB as a control bus Minuses Complex driver developed for a different application suite Driver is often tweaked Millisecond latencies Hard