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AP_Param: make it safe to change the type of a parameter 

if the type is changed then the value will revert to its default value
This commit is contained in:
Andrew Tridgell 2015-05-27 15:29:40 +10:00
parent 2f5ade4810
commit 8454246fae
1 changed files with 7 additions and 6 deletions
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13
libraries/AP_Param/AP_Param.cpp
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@ -276,7 +276,7 @@ const struct AP_Param::Info *AP_Param::find_by_header_group(struct Param_header
continue;
}
#endif // AP_NESTED_GROUPS_ENABLED
if (GROUP_ID(group_info, group_base, i, group_shift) == phdr.group_element) {
if (GROUP_ID(group_info, group_base, i, group_shift) == phdr.group_element && type == phdr.type) {
// found a group element
*ptr = (void*)(PGM_POINTER(&_var_info[vindex].ptr) + PGM_UINT16(&group_info[i].offset));
return &_var_info[vindex];
@ -297,14 +297,15 @@ const struct AP_Param::Info *AP_Param::find_by_header(struct Param_header phdr,
// not the right key
continue;
}
if (type != AP_PARAM_GROUP) {
// if its not a group then we are done
if (type == AP_PARAM_GROUP) {
const struct GroupInfo *group_info = (const struct GroupInfo *)PGM_POINTER(&_var_info[i].group_info);
return find_by_header_group(phdr, ptr, i, group_info, 0, 0);
}
if (type == phdr.type) {
// found it
*ptr = (void*)PGM_POINTER(&_var_info[i].ptr);
return &_var_info[i];
}
const struct GroupInfo *group_info = (const struct GroupInfo *)PGM_POINTER(&_var_info[i].group_info);
return find_by_header_group(phdr, ptr, i, group_info, 0, 0);
}
return NULL;
}