小弟我调ADS1115，模拟IIC完美运行，但是想试试G2553的硬件IIC，死活弄不出来，感觉发送地址之后单片机收不到应答信号，想来想去会不会是我外部接了一个上拉电阻的原因，所以特来问问各位使用内部的硬件IIC还需要外接上拉电阻不？接了之后会不会有什么影响
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