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蓝牙连接

麻烦问下各位大神:

 第一次主从机连了以后,我记下了从机的地址,利用flash保存下来了

下次主机重新上电后,我可以不用扫描直接按照我保存的地址进行连接不?还是必须得先扫描然后才能连接呀??求教,谢谢!!!!