病症如下: 
----------------------------------------------------------------------------------------------------------------------------------- 上电后: 

此时已经能看出问题了,想想看。 ----------------------------------------------------------------------------------------------------------------------------------- 发送0x01: 

----------------------------------------------------------------------------------------------------------------------------------- 发送0x02: 

----------------------------------------------------------------------------------------------------------------------------------- 发送0x03: 

----------------------------------------------------------------------------------------------------------------------------------- 症状: 

----------------------------------------------------------------------------------------------------------------------------------- 再发0x01: 

----------------------------------------------------------------------------------------------------------------------------------- 再发0x02: 

----------------------------------------------------------------------------------------------------------------------------------- 再发0x03: 

看到这,我想应该知道问题出现在哪了吧?哈哈。
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