API: start certain enums from 1

For enums describing direction & active state, event types etc. use 1
as the first value as it's easier to debug when all valid values are
different than in a zero-initialized data structure.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>

diff --git a/include/gpiod.h b/include/gpiod.h
index d37e60c11d32618c37ea53debda486adeed6c8ae..eb3f81ceadbe60eb64854a597298acdb5b645ee5 100644 (file)
--- a/include/gpiod.h
+++ b/include/gpiod.h
@@ -155,7 +155,7 @@ int gpiod_ctxless_set_value_multiple(const char *device,
  * @brief Event types that can be passed to the ctxless event callback.
  */
 enum {
-       GPIOD_CTXLESS_EVENT_CB_TIMEOUT,
+       GPIOD_CTXLESS_EVENT_CB_TIMEOUT = 1,
        /**< Waiting for events timed out. */
        GPIOD_CTXLESS_EVENT_CB_RISING_EDGE,
        /**< Rising edge event occured. */
@@ -531,7 +531,7 @@ gpiod_line_bulk_num_lines(struct gpiod_line_bulk *bulk)
  * @brief Possible direction settings.
  */
 enum {
-       GPIOD_LINE_DIRECTION_INPUT,
+       GPIOD_LINE_DIRECTION_INPUT = 1,
        /**< Direction is input - we're reading the state of a GPIO line. */
        GPIOD_LINE_DIRECTION_OUTPUT,
        /**< Direction is output - we're driving the GPIO line. */
@@ -541,7 +541,7 @@ enum {
  * @brief Possible active state settings.
  */
 enum {
-       GPIOD_LINE_ACTIVE_STATE_HIGH,
+       GPIOD_LINE_ACTIVE_STATE_HIGH = 1,
        /**< The active state of a GPIO is active-high. */
        GPIOD_LINE_ACTIVE_STATE_LOW,
        /**< The active state of a GPIO is active-low. */
@@ -649,7 +649,7 @@ bool gpiod_line_needs_update(struct gpiod_line *line) GPIOD_API;
  * @brief Available types of requests.
  */
 enum {
-       GPIOD_LINE_REQUEST_DIRECTION_AS_IS,
+       GPIOD_LINE_REQUEST_DIRECTION_AS_IS = 1,
        /**< Request the line(s), but don't change current direction. */
        GPIOD_LINE_REQUEST_DIRECTION_INPUT,
        /**< Request the line(s) for reading the GPIO line state. */
@@ -1019,7 +1019,7 @@ int gpiod_line_set_value_bulk(struct gpiod_line_bulk *bulk,
  * @brief Event types.
  */
 enum {
-       GPIOD_LINE_EVENT_RISING_EDGE,
+       GPIOD_LINE_EVENT_RISING_EDGE = 1,
        /**< Rising edge event. */
        GPIOD_LINE_EVENT_FALLING_EDGE,
        /**< Falling edge event. */