Function gpiocdev_uapi::v2::watch_line_info

source · [−]
pub fn watch_line_info(cfd: RawFd, offset: Offset) -> Result<LineInfo>
Expand description

Add a watch on changes to the LineInfo for a line.

Returns the current state of that information.

This does not include the line value. The line must be requested to access the value.

  • cfd - The fd of the open chip.
  • offset - The offset of the line to watch.