wangdan/N3_stm32: this is used by N3 net robot, with bfd 1.5kw v6, 500kbaud @ 9948c01cbb5009a9e71a040611e4b8c633684d78

this is used by N3 net robot, with bfd 1.5kw v6, 500kbaud

danny wang 9948c01cbb 延时和IO		2 роки тому
N3Drive	9948c01cbb 延时和IO	2 роки тому