1 概述
2 分析
2.1 Open
H406us / L832us / H833us / L833us / H835us / L832
0 ---> H406/L832 1 ---> H832/L406 s ---> H406/L406 x --->H832/L832
0ss101ss0sxxssssssssssx ssssxx1s0ssxssxs1sss0 0
0ss101ss 0sxxs ssss ssss sx ss ssxx1 s0ssx ssxs 1sss0 0
2.2 Stop
2.3 Close