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AP_Param: added a method for example programs to set parameters in objects

This commit is contained in:
Andrew Tridgell 2014-07-21 09:37:41 +10:00
parent 0dcd0e600b
commit 3474da6c97
2 changed files with 24 additions and 0 deletions
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18
libraries/AP_Param/AP_Param.cpp
View File

@ -819,6 +819,24 @@ void AP_Param::setup_object_defaults(const void *object_pointer, const struct Gr
}
}
// set a value directly in an object. This should only be used by
// example code, not by mainline vehicle code
void AP_Param::set_object_value(const void *object_pointer,
const struct GroupInfo *group_info,
const char *name, float value)
{
uintptr_t base = (uintptr_t)object_pointer;
uint8_t type;
for (uint8_t i=0;
(type=PGM_UINT8(&group_info[i].type)) != AP_PARAM_NONE;
i++) {
if (strcmp(name, group_info[i].name) == 0 && type <= AP_PARAM_FLOAT) {
void *ptr = (void *)(base + PGM_UINT16(&group_info[i].offset));
set_value((enum ap_var_type)type, ptr, value);
}
}
}
// load default values for all scalars in a sketch. This does not
// recurse into sub-objects

6
libraries/AP_Param/AP_Param.h
View File

@ -199,6 +199,12 @@ public:
// load default values for scalars in a group
static void setup_object_defaults(const void *object_pointer, const struct GroupInfo *group_info);
// set a value directly in an object. This should only be used by
// example code, not by mainline vehicle code
static void set_object_value(const void *object_pointer,
const struct GroupInfo *group_info,
const char *name, float value);
// load default values for all scalars in the main sketch. This
// does not recurse into the sub-objects
static void setup_sketch_defaults(void);