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Two way Single wire communication without CLK

moulirajesh

hi Ben,

i got a project for you can you interface two micro controllers to transmit and receive data with a single wire no clock line should be added as both the micro controllers should be able to transmit and receive

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  • It's not that hard to do, original (10MHz co-ax cable) Ethernet works like that, CAN works like that (although usually uses two wires in a differential mode but it doesn't have to).

     

    So one reasonably easy way to do it is to use micros with CAN interfaces and some very simple non standard interface parts.

     

    There isn't much point - the extra wire doesn't cost much.

     

    There are lots of other single wire clockless interfaces in common use like LIN (automotive), Dalla One-Wire and so on.

     

    In fact they always use 2 wires or more - even the One-Wire protocol uses a signal wire and a return or earth (or common).

     

    MK

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  • It's not that hard to do, original (10MHz co-ax cable) Ethernet works like that, CAN works like that (although usually uses two wires in a differential mode but it doesn't have to).

     

    So one reasonably easy way to do it is to use micros with CAN interfaces and some very simple non standard interface parts.

     

    There isn't much point - the extra wire doesn't cost much.

     

    There are lots of other single wire clockless interfaces in common use like LIN (automotive), Dalla One-Wire and so on.

     

    In fact they always use 2 wires or more - even the One-Wire protocol uses a signal wire and a return or earth (or common).

     

    MK

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