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MCU 与 78350-R1 通讯问题?

Genius 3755 points
Other Parts Discussed in Thread: BQ76920, BQ78350

读写单寄存器,很流畅;读DF 也能正常读出来,就是写DF的时候,只有上电那瞬间可以写进去,后面再写同样的数据到DF  78350-R1 不回应了。一直写不进入!应该是什么原因呢?