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Diffstat (limited to 'src/modules/uORB/uORB.h')
| -rw-r--r-- | src/modules/uORB/uORB.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/modules/uORB/uORB.h b/src/modules/uORB/uORB.h index a6e9171ed..707ff1efd 100644 --- a/src/modules/uORB/uORB.h +++ b/src/modules/uORB/uORB.h @@ -68,6 +68,33 @@ typedef const struct orb_metadata *orb_id_t; #define ORB_ID(_name) &__orb_##_name /** + * Generates a pointer to the uORB metadata structure for + * a given topic. + * + * The topic must have been declared previously in scope + * with ORB_DECLARE(). + * + * @param _name The name of the topic. + * @param _count The class ID of the topic + */ +#define ORB_ID_DOUBLE(_name, _count) ((_count == CLASS_DEVICE_PRIMARY) ? &__orb_##_name##0 : &__orb_##_name##1) + +/** + * Generates a pointer to the uORB metadata structure for + * a given topic. + * + * The topic must have been declared previously in scope + * with ORB_DECLARE(). + * + * @param _name The name of the topic. + * @param _count The class ID of the topic + */ +#define ORB_ID_TRIPLE(_name, _count) \ + ((_count == CLASS_DEVICE_PRIMARY) ? &__orb_##_name##0 : \ + ((_count == CLASS_DEVICE_SECONDARY) ? &__orb_##_name##1 : \ + (((_count == CLASS_DEVICE_TERTIARY) ? &__orb_##_name##2 : 0)))) + +/** * Declare (prototype) the uORB metadata for a topic. * * Note that optional topics are declared weak; this allows a potential |