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EM1402EVM: BQ76PL455只能读出寄存器的值,无法往可读写寄存器写入值

Part Number: EM1402EVM

我现在只能读出BQ76PL455寄存器的内容,却无法通过写命令改变寄存器的值,我十分确定我的写命令帧是没有问题的,不知道这是什么原因导致的?目前可以排除的问题是通讯正常,BQ76PL455处于工作状态,BQ76PL455寄存器的内容均与手册上的寄存器初始值相同。期待解答!