Dear all,
I would like to implement the RTnet protocol on a small a microcontroler. As
far, I have working a TDMA discipline which is able to synchronize with a
master (PC with Xenomai). Also, I have working non rt UDP stack implemented on
top of the FreeRTOS. In the next step I plan to send a UDP frames through a
RTmac. At this point I have small uncertainty, how whole ethernet frame
containing a RT UDP looks like? I assume that sending a standard UDP frame in a
node slot is not a point. Is the
following frame correct?
----------------------------------------------------------------------------------------------------------
| | | |
| |
| Ethernet header | RTmac header | IP header | UDP header | DATA |
| | | |
| |
----------------------------------------------------------------------------------------------------------
Ethertype = 0x9021
If this is a RT UDP frame, how looks like RTmac header:
- Type = ???,
- Version = 0x02,
- Flags = 0x01 ???
Could you please shed light on this issue?
Best regards,
Mariusz
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