Yeoh Chun Yeow wrote: > Dear Jan > > Can you explain the tdma configuration of "slot 1 0 1/1 1500 1"?
First of all, this was early-morning nonsense, must rather read: slot 2 0 1/1 1500 0 Translation: Create a TDMA slot, ID 2 (first arg), offset 0 us relative to each TDMA Sync (second arg), period 1/1, i.e. use every TDMA cycle (third arg), 1500 byte payload (fourth arg), and join this slot with the one of ID 0 (fifth arg). For more details, see README.rtmac (hmm, it's is failing to mention the fifth argument, too bad...). > > And how should I configure the cycle (previously in the rtnet.conf, I set > the TDMA cycle to 2000 and TDMA offset to 500) and the slave? Please check the README first, it should explains this. > > Is it ok for me to use the default configuration in tdma config script? As a basis, yes. > > I have ensure that AT91 acts as the master and it is able to ping the slave > using rtping after the completion of TDMA setup. So is this enough? To be safe, apply the above configuration and run a test with larger ping frames (ping -s ...). Maybe the time for returning some transmission buffer from the hardware back to the OS is actually so short here that a TX queue is not needed. But my feeling is not yet that optimistic. Jan
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