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uORB: Add API to check if a topic exists yet

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Lorenz Meier
2015-04-26 14:33:56 +02:00
parent f7f949f455
commit 28dfb8983a
2 changed files with 29 additions and 0 deletions
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src/modules/uORB/uORB.h
+9
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@@ -318,6 +318,15 @@ extern int orb_check(int handle, bool *updated) __EXPORT;
*/
extern int orb_stat(int handle, uint64_t *time) __EXPORT;
/**
* Check if a topic has already been created.
*
* @param meta ORB topic metadata.
* @param instance ORB instance
* @return OK if the topic exists, ERROR otherwise with errno set accordingly.
*/
extern int orb_exists(const struct orb_metadata *meta, int instance) __EXPORT;
/**
* Return the priority of the topic
*