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d4d5� �Z� ZS )8�SerialzSSerial port implementation that simulates a loop back connection in plain software.�2 �K �n � � �� �, �X � � �` � �% � K � � � � � � c s( t t| �j||� d| _d | _d | _d S )Ni )�superr �__init__� buffer_size�queue�logger)�self�args�kwargs)� __class__� �#/usr/lib/python3.6/protocol_loop.pyr - s zSerial.__init__c C s~ | j rtd��d| _tj| j�| _| jdkr4td��| j| j� | j � d| _ | j
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zPort is already open.Nz.Port must be configured before it can be used.T)�is_openr r! r �Queuer Z_port�from_urlZport�_reconfigure_portZ_dsrdtr�_update_dtr_stateZ_rtscts�_update_rts_state�reset_input_buffer�reset_output_buffer)r" r& r& r' �open3 s
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pySerial.loopr zenabled loggingzunknown option: {!r}zPexpected a string in the form "loop://[?logging={debug|info|warning|error}]": {}N)�urlparseZurlsplit�schemer r8 Zparse_qsZquery�itemsr9 Z basicConfigZ getLoggerr! ZsetLevel�
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t�| jr(| jjdj| jj� �� | jj� S )z9Return the number of bytes currently in the input buffer.zin_waiting -> {:d})r( r r! r r8 r �qsize)r" r& r& r' �
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zreset_output_buffer()N)r( r r! r r rA rP rH )r" r& r& r' r/ � s zSerial.reset_output_bufferc C s | j r| j jdj| j�� dS )z[ Set break: Controls TXD. When active, to transmitting is
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z_update_break_state({!r})N)r! r r8 Z _break_state)r" r& r& r' �_update_break_state� s zSerial._update_break_statec C s | j r| j jdj| j�� dS )z)Set terminal status line: Request To Sendz'_update_rts_state({!r}) -> state of CTSN)r! r r8 �
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_dtr_state)r" r& r& r' r, � s zSerial._update_dtr_statec C s* | j s
t�| jr$| jjdj| j�� | jS )z(Read terminal status line: Clear To SendzCTS -> state of RTS ({!r}))r( r r! r r8 rR )r" r& r& r' �cts� s
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t�| jr | jjd� dS )z)Read terminal status line: Ring Indicatorzreturning dummy for RIF)r( r r! r )r" r& r& r' �ri� s
z Serial.ric C s | j s
t�| jr | jjd� dS )z)Read terminal status line: Carrier Detectzreturning dummy for CDT)r( r r! r )r" r& r& r' �cd s
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