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如何在PC上读取或设置bq76PL455?



技术大佬们你们好,我现在是有一片 bq76PL455板子,连接16串三元锂电池,我把 bq76PL455的rx tx 和gnd 连接到PC的串口上(455的rx连接PC的tx,455的TX连接PC的rx,gnd连gnd),想读出455采样的数据,但在PC上,用bq76PL455_GUI 连接显示 unable to open com port,  用串口调试助手连接,也不能接受到任何数据,我把wakeup脚设置为高电平,测得VP由0v变为5V,但在PC上仍然获取不了数据,这是为什么?

多谢了!