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cc2564MODAEM在STM32discovery上应用,没有打印信息,打开蓝牙栈时返回错误代码-4?

这个问题在论坛里看了几个人发帖,没有得到答案,

PC机设备管理显示COM4,

1,适配板J1-J6连接到DISCOVERY侧,;

2,R61,R71,R81,R91 零欧姆电阻连接;

3,MODAEM板J1,连接EM供电方式;

用户指南看了好几遍了,硬件还有什么注意事项么?