I plan to implement an RS485 Bus with multiple masters using an RX113. For CSMA I need
Does the RX family have support to do this both jobs in hardware? In the hardware manual I can see a bus collision detect, but only for the extended SCI mode and only for the break field.
And yes, I had a look to CAN bus and no, CAN is not an option. I have to transmit small and bigger packets and the same messages from different masters. Some times as p2p and sometimes as broadcast to all or as broadcast to a group of participants (like Ethernet vLan). Furhtermore I need voltage protection of the bus up to 60 V. RS485 have this feature.
And no, I don't want buy a Profibus ASIC :-)
Thanks for all help,
In reply to Kevin:
In reply to Christoph:
In reply to FrankL:
In reply to Mike Clements:
Dear Mike, thanks for your caring. I switched to the CAN bus for this functionality (removed and changed functionality to make CAN bus to an option), using RS485 in a Master/Slave scenario only and - maybe - continue with RS485 multi master functionality later. So I still didn't found a working solution so far. -Christoph