Integration Comms Question

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so have large integration working on 10+ subsystems inside form factor controlled master chip. comm requirements such can expanded in future more subsystems, master can control, , request variables , data each subsystem , system quick if function on master chip requires parsing variables 2-3 subsystems during function call.

so question twi between systems or spi better choice? there quite bit going going on in system, including lcd control (another subsystem imagine), network utilization, , coms/commands ip based clients , subsystems. data throughput not extremely high, when function called there may average of 5-10 variables called, highest call of maybe 100 variables sync update between systems. function polling subsystems happen average of every 1-10 mins since home automation system replacing cinemaronline.com install.

what use comms?

quote
so question twi between systems or spi better choice?

neither designed long distances, intra-board comms.

this sort of app use async on rs-485 in network of kind, multi-drop setup.

______
rob


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