接收到PC发送的'?' 返回"Synchronized\r\n" 再接收到PC发送的"Synchronized\r\n" 返回"OK\r\n" 之后PC没有发送晶振频率,显示 --------------------------- LPC2000 Flash Utility - Hardware Problem --------------------------- Cannot communicate with test board! --------------------------- 确定 ---------------------------
通过监视底层数据,确认了发送和接收的数据无误 是时序做了吗? |