The MoaT (Master of all Things) is not -- it's a slave :-P Specifically, it's configurable slave code for ATmega88 (or larger; -48 works with limited features). it supports conditional search, thus you can have a 100-device bus that you can actually poll often enough -- using 1wire as a cheap replacement for KNX or similar buses is definitely possible (and painless, assuming your bus hardware works).
Features that work: * every device gets a unique name * every 1wire bus transaction is secured by CRC16, both ways * select slaves via CONDITIONAL SEARCH whenever something interesting happens * you get to decide what "interesting" means * any ports can be input (high-impedance or pull-up) or output (low or high) * any port can have a counter * any port can be pulse-width-modulated (low frequency, 1/10th Hz) * … including a one-shot mode – for buzzing a door open, or watering the lawn, or … * A/D converter, with alarm when the value goes out of bounds * you get a debug console * alarm handling -- reporting which sub-feature triggered it, selectively enabling alarms per feature. the works * everything can be de-configured, so that smaller AVRs have a chance * "owdir" only liste features which actually exist * works with 8 MHz internal clock, or any faster external source The TODO list: * store config in EPROM; change config via wire * hardware assisted "fast" PWM * named outputs (and inputs and whatever) * talking to intelligent smoke detectors (Gira Dual) * I²C interface * serial interface, for adding $WHATEVER to 1wire * statistics (e.g. CRC errors or overruns) * PID controller, for rudimentary local intelligence if the master should die * failsafe * figure out how to do over-the-wire firmware upgrades * support more AVR ICs, specifically the Xmega Slave code: https://github.com/M-o-a-T/owslave.git OWFS branch: https://github.com/M-o-a-T/owfs.git #moat I even managed to write a manpage. ;-) I plan to do my complete home automation with this stuff, so I'll definitely stick around and add more features. Feel free to do the same (but do share!). NB: https://github.com/M-o-a-T/ also has a couple of EAGLE designs for accompanying hardware – some soldering skills required – these are still work in progress. NB2: right now, to use this you'll need AVR-GCC and a programmer like avrdude. Feel free to teach my code to support Arduino-style boot loaders. -- Matthias ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
