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单片机与bq34z100通讯读取数据都是0xff

Other Parts Discussed in Thread: BQ34Z100

我用单片机与bq34z100进行通信,通讯的流程是这样的,我先发start,再发0xaa得到ack,后发0x08得到ack,在重新发送起始信号start,再发0xab得到ack,之后读到的两个数据都是0xff,请问这是什么原因?

另外,我在发完命令0x08之后,要等大约0.1s所有才得到ack,请问这是正常吗?还是有问题的?

请问各位怎么解决?