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bq76PL455A-Q1 GUI 串口无法连接

Other Parts Discussed in Thread: EM1402EVM

1  购买了TI   EM1402EVM ;

2  连接电源12V   USB转串口连接J7

3  测量板上电压   VIO=5V   VP=1.8V

4  安装USB转串口驱动

5  打开PC机软件 bq76PL455A-Q1 GUI 

找到串口,但出现 不能打开COM port;

请问:  1、EM1402EVM  有没有 连接PC 的操作指南;在TI 的用户手册 中没有提到相关内容 ;

2、串口如何设置?