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输入电压每隔一定的值，ADS1112的读出的AD值就会保持不变，好长一段时间以后才会恢复。
有没有用示波器看看输出的实际值是不是已经变了，但是你的MCU没有采集到呢？
谢谢，确实是iic时序应答没有配置好，才导致这样的问题
