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AP_Param: fix convert_class when index is 0

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Joshua Henderson 2022-01-10 01:27:34 -05:00 committed by Peter Hall
parent 8fb28ac906
commit 78819a1c97
1 changed files with 8 additions and 1 deletions
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9
libraries/AP_Param/AP_Param.cpp
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@ -1908,7 +1908,14 @@ void AP_Param::convert_class(uint16_t param_key, void *object_pointer,
info.old_key = param_key;
info.type = (ap_var_type)group_info[i].type;
info.new_name = nullptr;
info.old_group_element = (uint16_t(group_info[i].idx)<<group_shift) + old_index;
uint16_t idx = group_info[i].idx;
if (group_shift != 0 && idx == 0) {
// Note: Index 0 is treated as 63 for group bit shifting purposes. See group_id()
idx = 63;
}
info.old_group_element = (idx << group_shift) + old_index;
uint8_t old_value[type_size(info.type)];
AP_Param *ap = (AP_Param *)&old_value[0];