DM6437的resizer官方例程中,32个滤波参数中有负值。请问该怎么把负值写进寄存器中?是HFILToe.COEFo和HFILToe.COEFe,以及VFILToe.COEFo和VFILToe.COEFe。该怎么写负值呢?直接取反加1吗?
Chris Meng:
你好,
请参考DM6437 vpfe guide里面寄存器的相关内容:
S10Q8 format: range of -2 to 1.255/256, 1 is 100h
DM6437的resizer官方例程中,32个滤波参数中有负值。请问该怎么把负值写进寄存器中?是HFILToe.COEFo和HFILToe.COEFe,以及VFILToe.COEFo和VFILToe.COEFe。该怎么写负值呢?直接取反加1吗?
你好,
请参考DM6437 vpfe guide里面寄存器的相关内容:
S10Q8 format: range of -2 to 1.255/256, 1 is 100h