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SEED-DEC138开发板中GPIO配置

Other Parts Discussed in Thread: SN74LVTH16245A

SEED-DEC138开发板中GPIO 是由一个芯片SN74LVTH16245A 扩展的。导致 只能单向输入或输出。现在需要既输入,又输出。请问怎么配置呢