Lines Matching full:read

11     gpio-v2-line-event-read.rst.
16 GPIO_LINEEVENT_DATA_READ - Read edge detection events from a line event.
21 ``int read(int event_fd, void *buf, size_t count)``
40 Read edge detection events for a line from a line event.
53 occurrence and stores them in a buffer from where they can be read by
54 userspace at its convenience using `read()`.
62 Events read from the buffer are always in the same order that they were
67 The buffer may overflow if bursts of events occur quicker than they are read
72 userspace, `read()` supports copying multiple events. The number of events
76 The `read()` will block if no event is available and the ``event_fd`` has not
85 On success the number of bytes read, which will be a multiple of the size of