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EtherCAT master TODO
$Id$
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Version 1.4.0:
* Realtime interface changes:
- SDO access.
* Mailbox handler
* READMEs for examples.
* Remove get_cycles() calls and references to cpu_khz to increase
portability.
* Remove ecdb.h and let lsec output PDO information 'cut-and-pastable' for
applications.
* SDO write access in sysfs.
* Distributed clocks.
* Update documentation.
* Do not configure in ecrt_master_activate(), but later in the state machine.
* Remove master_state_t.
* Scanning of Sdo dictionary / writing EEPROM in OPERATION state.
* Adapt remaining examples.
* Separate Pdo and Pdo entry classes.
* Attach Pdo names.
* Replace ec_sdo_data_t with ec_sdo_request_t.
* Make all define underscores the same.
Future issues:
* Move slave handlers and state machines, etc. into a user space daemon.
- Step 1: Replace Sysfs interface with cdev and a user space program
to replace lsec.
- Step 2: Move kernel threads to user space daemon with a TCP interface
replacing the cdev.
* Mailbox gateway.
* Slave-to-slave communication.
* Redundancy with 2 network adapters.
* Interface/buffers for asynchronous domain IO.
Smaller issues:
* Unite fsm_pdo_mapping, fsm_pdo_config and fsm_coe_map.
* Clear sync managers in INIT.
* Simplify FSMs with <state>_enter() functions.
* Read out CRC counters.
* Optimize alignment of process data.
* Evaluate EEPROM contents after writing.
* Configure slave ports to automatically open on link detection.
* Interrupt master state machines state scan for other jobs.
* Master state machine, slave configuration: Do not check every slave on
a cycle.
* Only execute one EoE handler per EoE cycle.
Less important issues:
* File access over EtherCAT (FoE).
* Allow VLAN tagging.
* Determine number of frames, the NIC can handle.
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