LwM2M path helper macros

Macros
#define	LWM2M_PATH(...)
	Generate LwM2M string paths using numeric components.
#define	LWM2M_OBJ(...)    GET_OBJ_MACRO(__VA_ARGS__, LWM2M_OBJ4, LWM2M_OBJ3, LWM2M_OBJ2, LWM2M_OBJ1)(__VA_ARGS__)
	Initialize LwM2M object structure.

Detailed Description

Macro Definition Documentation

LWM2M_OBJ

#define LWM2M_OBJ

(

...

)

GET_OBJ_MACRO(__VA_ARGS__, LWM2M_OBJ4, LWM2M_OBJ3, LWM2M_OBJ2, LWM2M_OBJ1)(__VA_ARGS__)

#include <zephyr/net/lwm2m_path.h>

Initialize LwM2M object structure.

Accepts at least one and up to four arguments. Fill up lwm2m_obj_path structure and sets the level.

For example:

struct lwm2m_obj_path p = LWM2M_OBJ(MY_OBJ, 0, RESOURCE);

Can also be used in place of function argument to return the structure allocated from stack

lwm2m_notify_observer_path(&LWM2M_OBJ(MY_OBJ, inst_id, RESOURCE));

LWM2M_PATH

#define LWM2M_PATH

(

...

)

#include <zephyr/net/lwm2m_path.h>

Value:

        LWM2M_PATH_MACRO(__VA_ARGS__, LWM2M_PATH4, LWM2M_PATH3, \
                         LWM2M_PATH2, LWM2M_PATH1)(__VA_ARGS__)

Generate LwM2M string paths using numeric components.

Accepts at least one and up to four arguments. Each argument will be stringified by the pre-processor, so calling this with non-literals will likely not do what you want.

For example:

#define MY_OBJ_ID 3
LWM2M_PATH(MY_OBJ_ID, 0, 1)

would evaluate to "3/0/1", while

int x = 3;
LWM2M_PATH(x, 0, 1)

evaluates to "x/0/1".