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EtherCAT master TODO

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$Id$

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* Issues for release 1.3.0:

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  - Take broadcast MAC address to register the first ethernet device.

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* Future features:

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  - Interface/buffers for asynchronous domain IO.

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  - Distributed clocks.

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  - Dynamic PDO mapping from SDO dictionary (see can-cia.org: cia301ds4).

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  - Redundancy with 2 network adapters.

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  - Mailbox handler

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  - Support slaves, that don't support the LRW datagram, only LRD/LWR.

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* Smaller issues:

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  - Clear sync managers in INIT.

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  - Simplify FSMs with <state>_enter() functions.

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  - Output intermediate results during lsec.

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  - State change FSM: Follow spontaneous state changes.

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  - Read out CRC counters.

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  - Calculate expected working counter for domains.

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  - Optimize alignment of process data.

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  - Evaluate EEPROM contents after writing.

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  - SDO write access in sysfs.

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  - Configure slave ports to automatically open on link detection.

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  - Calculate cycle time of operation state machine.

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  - Locking for serveral slave variables for sysfs access.

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  - Interrupt master state machines state scan for other jobs.

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  - Master state machine, slave configuration: Do not check every slave on

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    a cycle.

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  - Do only execute one EoE handler per EoE cycle.

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* Less important issues:

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  - Implement all EtherCAT datagram types.

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  - File access over EtherCAT (FoE).

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  - Allow VLAN tagging.

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  - Determine number of frames the NIC can handle.

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