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a k�h2 � @ sl d Z ddlZddlZddlmZ ddlmZmZ ddlmZ ddl m Z ddl m Z G dd � d e e j �ZdS ) zB Serial port support for Windows. Requires PySerial and pywin32. � N)� PARITY_NONE)� EIGHTBITS� STOPBITS_ONE)�to_bytes)�abstract)�BaseSerialPortc @ sZ e Zd ZdZdZdeeeddfdd�Zdd� Z d d � Z d d � Z d d� Z dd� Z dd� ZdS )� SerialPortz@A serial device, acting as a transport, that uses a win32 event.� i�% r c C s� | j |||||d || d�| _| �� | �� || _|| _g | _d| _d| _d| _ || _t � � | _ t �d ddd �| j _t � � | _t �d ddd �| j_| j�| j j| d� | j�| jj| d� | j�| � | �� d S )N)�baudrate�bytesize�parity�stopbits�timeout�xonxoff�rtsctsr r �serialReadEvent�serialWriteEvent)Z_serialFactory�_serialZ flushInputZ flushOutput�reactor�protocol�outQueue�closedZclosedNotifies�writeInProgress� win32fileZ OVERLAPPED�_overlappedRead� win32eventZ CreateEvent�hEvent�_overlappedWriteZaddEventZmakeConnection�_finishPortSetup) �selfr ZdeviceNameOrPortNumberr r r r r r r � r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/twisted/internet/_win32serialport.py�__init__! s6 � zSerialPort.__init__c C s0 | � � \}}t�| jjt�d�| j�\}| _dS )zn Finish setting up the serial port. This is a separate method to facilitate testing. r N)�_clearCommErrorr �ReadFiler � _port_handle�AllocateReadBufferr �read_buf)r �flags�comstat�rcr r r! r L s �zSerialPort._finishPortSetupc C s t �| jj�S )N)r ZClearCommErrorr r% )r r r r! r# Y s zSerialPort._clearCommErrorc C s� t �| jj| jd�}t| jd |� �}| �� \}}|jr�t � | jj � t � | jjt � |j�| j�\}}t �| jj| jd�}| j�|t|d |� � � n | j�|� t � | jj � t � | jjt � d�| j�\}| _d S )Nr r )r ZGetOverlappedResultr r% r r r' r# ZcbInQuer Z ResetEventr r$ r& r Z dataReceived)r �n�firstr( r) r* �bufr r r! r \ s. � � � �zSerialPort.serialReadEventc C s6 |r2| j r| j�|� nd| _ t�| jj|| j� d S )Nr )r r �appendr � WriteFiler r% r )r �datar r r! �write| s �zSerialPort.writec C sD z| j �d�}W n ty* d| _Y d S 0 t�| jj|| j� d S )Nr ) r �pop� IndexErrorr r r/ r r% r )r Z dataToWriter r r! r � s �zSerialPort.serialWriteEventc C sH | j �| jj� | j �| jj� tj�| |� | j� � | j �|� dS )z� Called when the serial port disconnects. Will call C{connectionLost} on the protocol that is handling the serial data. N) r Z removeEventr r r r �FileDescriptor�connectionLostr �closer )r �reasonr r r! r5 � s zSerialPort.connectionLostN)�__name__� __module__� __qualname__�__doc__� connectedr r r r" r r# r r1 r r5 r r r r! r s � + r )r; r r �serialr r r Zserial.serialutilr Ztwisted.internetr Ztwisted.internet.serialportr r4 r r r r r! �<module> s
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