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Altera_Forum's avatar
Altera_Forum
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11 years ago

one wire fsm

hi, i'm trying to write a FSM for ibuttton ds1990a using one wire protocol. after a lot of trys i dont know what is the problem. if any one could telm me what the problem is i will be very hep...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

I am unfamiliar with the protocol, but at first glance it seems all right, but for the clk_count_write variable. You use this without initialisation.

And another point, why do you choose your state machine to be fully clock dependent? I was tought to make a combinatorial state machine, but to handle the state assignment under a clock edge.