If direction is not specified, the current direction is used. A can be configured to return to their previous state after a certain amount of time. The -delay flag sets this time. If delay is not specified, the channel will not return to its previous state. If -value is not specified, the current is value is used, so the channel will change to its opposite value after the given delay.
Any error results in a numerical error code being reported.
Specifies which port to query. Specifies the channel on the given port to query. If -channel is given, adbio get returns a single value, the value of the given channel. Copyright Tcladbio is Copyright 1999 Michael Halle. Tcladbio is not public domain.