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J 回复于
@kanken6174 不建议修改引脚驱动能力，因为i2c协议要求总线为弱上拉，提高IO驱动能力会使之变成强上拉
当VCC为1.8V时，上拉电阻应选用2K 当VCC为3.3V时，上拉电阻应选用4.7K
若无法正常使用，应排查走线质量与信号干扰。
