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iceAMIC110开发板如何外接RS485

Other Parts Discussed in Thread: PROFIBUS, AMIC110, AM5728

如题,当前想在iceAMIC110开发板上进行Profibus_slave 评估栈Demo的测试,但是该开发板没有内置RS485接口,请问下,我该如何在AMIC110开发板上连接出RS485接口,并且软件评估app程序是否要进行软件代码修改?还是只需要将接口连接引出来即可?