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1.通过IO模拟SMBus与BQ40Z50通讯，发现发送指定的指令，BQ40Z50无反应。
请问通讯应该发什么命令字，BQ40Z50作为从机地址，究竟是多少啊，手册就不写的吗！！！
0x16
bq20z45是参照SBS1.1标准设计的，
请参考SBS1.1.
