通过SPI接口操作LTC6813，读寄存器没问题，但是写入寄存器一直无效。比如我单片机上电时初始化ConfigA配置寄存器的首字节为0x04，其余5个字节为0x00。
在主循环中读出的所有字节都是0，PEC15校验字节也是6个字节0x00的有效检验数值，说明LTC6813响应正常。
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