There are several systems along these lines that already exist: pico-systems ppmc, mesanet.com's 7i43, and pluto_servo all use the EPP protocol for this purpose, and each one has established its own protocol details.
There's also this project, though I'm not sure of the state of it: http://fennetic.net/gingery_machines/index.php?motherchip So far each system has established its own protocol, because each one supports a different mix (e.g., number of PWM, number of Encoder, number of Step generator, number of DAC, number of GPIO) and the total amount of data transferred on the parport quickly becomes a limitation. Jeff ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
