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PublicationMulti.hpp
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33 
34 /**
35  * @file Publication.hpp
36  *
37  */
38 
39 #pragma once
40 
41 #include <px4_platform_common/defines.h>
42 #include <systemlib/err.h>
43 #include <uORB/uORB.h>
44 
45 namespace uORB
46 {
47 
48 /**
49  * Base publication multi wrapper class
50  */
51 template<typename T>
53 {
54 public:
55 
56  /**
57  * Constructor
58  *
59  * @param meta The uORB metadata (usually from the ORB_ID() macro) for the topic.
60  * @param priority The priority for multi pub/sub, 0 means don't publish as multi
61  */
62  PublicationMulti(const orb_metadata *meta, uint8_t priority = ORB_PRIO_DEFAULT) :
63  _meta(meta),
64  _priority(priority)
65  {}
66 
68 
69  /**
70  * Publish the struct
71  * @param data The uORB message struct we are updating.
72  */
73  bool publish(const T &data)
74  {
75  if (_handle != nullptr) {
76  return (orb_publish(_meta, _handle, &data) == PX4_OK);
77 
78  } else {
79  int instance = 0;
80  orb_advert_t handle = orb_advertise_multi(_meta, &data, &instance, _priority);
81 
82  if (handle != nullptr) {
83  _handle = handle;
84  return true;
85  }
86  }
87 
88  return false;
89  }
90 
91 protected:
93 
95 
96  const uint8_t _priority;
97 };
98 
99 /**
100  * The publication multi class with data embedded.
101  */
102 template<typename T>
104 {
105 public:
106  /**
107  * Constructor
108  *
109  * @param meta The uORB metadata (usually from the ORB_ID() macro) for the topic.
110  * @param priority The priority for multi pub
111  */
112  PublicationMultiData(const orb_metadata *meta, uint8_t priority = ORB_PRIO_DEFAULT) :
113  PublicationMulti<T>(meta, priority)
114  {}
115 
116  ~PublicationMultiData() = default;
117 
118  T &get() { return _data; }
119  void set(const T &data) { _data = data; }
120 
121  // Publishes the embedded struct.
123  bool update(const T &data)
124  {
125  _data = data;
127  }
128 
129 private:
130  T _data{};
131 };
132 
133 } // namespace uORB
PublicationMultiData(const orb_metadata *meta, uint8_t priority=ORB_PRIO_DEFAULT)
Constructor.
API for the uORB lightweight object broker.
LidarLite * instance
Definition: ll40ls.cpp:65
PublicationMulti(const orb_metadata *meta, uint8_t priority=ORB_PRIO_DEFAULT)
Constructor.
uint8_t * data
Definition: dataman.cpp:149
Simple error/warning functions, heavily inspired by the BSD functions of the same names...
__BEGIN_DECLS typedef void * orb_advert_t
ORB topic advertiser handle.
Definition: uORB.h:134
int orb_publish(const struct orb_metadata *meta, orb_advert_t handle, const void *data)
Definition: uORB.cpp:70
Object metadata.
Definition: uORB.h:50
int orb_unadvertise(orb_advert_t handle)
Definition: uORB.cpp:65
Base publication multi wrapper class.
static struct mpu9x50_data _data
IMU measurement data.
bool publish(const T &data)
Publish the struct.
const orb_metadata * _meta
The publication multi class with data embedded.
orb_advert_t orb_advertise_multi(const struct orb_metadata *meta, const void *data, int *instance, int priority)
Definition: uORB.cpp:53