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樓主,按照你的方法鏈接了串口,但是當我試圖登錄TFTP時顯示[PRINTER] : Printer initialization succeeded
[SERIAL-TRACE] : Starting I/O thread 28604
[SERIAL-TRACE] : Open serial port[\\.\COM4] ==> Handle[3648]
[SERIAL-TRACE] : SERIAL-CONFIG: BAUD-RATE=115200
[SERIAL-TRACE] : SERIAL-CONFIG: PARITY=none
[SERIAL-TRACE] : SERIAL-CONFIG: STOP-BITS=1
[SERIAL-TRACE] : SERIAL-CONFIG: DATA-BITS=8
[SERIAL-TRACE] : SERIAL-CONFIG: DSR-OUTPUT-FLOW-HONORED=no
[SERIAL-TRACE] : SERIAL-CONFIG: DTR-CONTROL=enable/high/on
[SERIAL-TRACE] : SERIAL-CONFIG: CTS-OUTPUT-FLOW-HONORED=no
[SERIAL-TRACE] : SERIAL-CONFIG: RTS-CONTROL=enable/high/on
[SERIAL-TRACE] : Duplicate handle[3648] --> New handle[3648]
[SERIAL-TRACE] : Comm State [CTS-OFF]
[SERIAL-TRACE] : Comm State [DSR-OFF]
[SERIAL-TRACE] : Comm State [RING-OFF]
[SERIAL-TRACE] : Comm State [RLSD-OFF]
SecureCRT - Version 9.2.2 (x64 build 2794)
[SERIAL-TRACE] : Waiting 10 seconds for I/O thread 28604 to exit.
[SERIAL-TRACE] : I/O thread 28604 has exited cleanly.
[SERIAL-TRACE] : Close Handle[3648]
[LOCAL] : Stream has closed [CLOSE_TYPE_NONSPECIFIC] : Error reading data on serial port: Access is denied.
Error reading data on serial port:
Access is denied.
[PRINTER] : Printer initialization succeeded
[SERIAL-TRACE] : Starting I/O thread 32852
[SERIAL-TRACE] : Open serial port[\\.\COM4] ==> Handle[1168]
[SERIAL-TRACE] : SERIAL-CONFIG: BAUD-RATE=115200
[SERIAL-TRACE] : SERIAL-CONFIG: PARITY=none
[SERIAL-TRACE] : SERIAL-CONFIG: STOP-BITS=1
[SERIAL-TRACE] : SERIAL-CONFIG: DATA-BITS=8
[SERIAL-TRACE] : SERIAL-CONFIG: DSR-OUTPUT-FLOW-HONORED=no
[SERIAL-TRACE] : SERIAL-CONFIG: DTR-CONTROL=enable/high/on
[SERIAL-TRACE] : SERIAL-CONFIG: CTS-OUTPUT-FLOW-HONORED=no
[SERIAL-TRACE] : SERIAL-CONFIG: RTS-CONTROL=enable/high/on
[SERIAL-TRACE] : Duplicate handle[1168] --> New handle[1168]
[SERIAL-TRACE] : Comm State [CTS-OFF]
[SERIAL-TRACE] : Comm State [DSR-OFF]
[SERIAL-TRACE] : Comm State [RING-OFF]
[SERIAL-TRACE] : Comm State [RLSD-OFF]
[SERIAL-TRACE] : COMM-EVENT [err]
[SERIAL-TRACE] : COMM-ERROR: A data overrun occured. Data was lost.
[SERIAL-TRACE] : COMM-STATE: 0 bytes waiting to be read; 0 bytes pending for transfer.
SecureCRT - Version 9.2.2 (x64 build 2794)
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[SERIAL-TRACE] : Waiting 10 seconds for I/O thread 32852 to exit.
[SERIAL-TRACE] : I/O thread 32852 has exited cleanly.
[SERIAL-TRACE] : Close Handle[1168]
[LOCAL] : Stream has closed [CLOSE_TYPE_NONSPECIFIC] : Error reading data on serial port: Access is denied.
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