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serialwin32.cpython-310.pyc
o +�a_<O � @ s` d dl mZ d dlZd dlZd dlmZ d dlZd dlmZmZm Z m Z m Z G dd� de�Z dS )� )�absolute_importN)�win32)� SerialBase�SerialException�to_bytes�PortNotOpenError�SerialTimeoutExceptionc s e Zd ZdZdZ� fdd�Zdd� Zdd� Zd d � Zd d � Z e d d� �Z d;dd�Z dd� Z dd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d!� Ze d"d#� �Ze d$d%� �Ze d&d'� �Ze d(d)� �Zd<d,d-�Zd=d/d0�Ze d1d2� �Zd3d4� Z d5d6� Z d7d8� Z e j j!d9d:� �Z � Z"S )>�Serialz5Serial port implementation for Win32 based on ctypes.)�2 �K �n � � �� i, iX i� i i` i� i�% i K i � i � i � c s, d | _ d | _d | _tt| �j|i |�� d S �N)� _port_handle�_overlapped_read�_overlapped_write�superr �__init__)�self�args�kwargs�� __class__� �4/usr/lib/python3/dist-packages/serial/serialwin32.pyr s zSerial.__init__c C s� | j du r td��| jrtd��| j}z|�� �d�r)t|dd� �dkr)d| }W n ty3 Y nw t� |tj tj B ddtj tj tjB d�| _| jtjkr]d| _td �| jt�� ���zMt�� | _t�dd dd�| j_t�� | _t�dddd�| j_t�| jd d � t�� | _ t� | jt� | j �� | � � t� | jtj!tj"B tj#B tj$B � W n z | �%� W d| _� Y d| _� d | _dS ) zx Open port with current settings. This may throw a SerialException if the port cannot be opened. Nz.Port must be configured before it can be used.zPort is already open.�COM� � z\\.\r z could not open port {!r}: {!r}� � T)&�_portr �is_open�name�upper� startswith�int� ValueErrorr � CreateFile� GENERIC_READ� GENERIC_WRITE� OPEN_EXISTING�FILE_ATTRIBUTE_NORMAL�FILE_FLAG_OVERLAPPEDr �INVALID_HANDLE_VALUE�format�portstr�ctypes�WinError� OVERLAPPEDr � CreateEvent�hEventr � SetupComm� COMMTIMEOUTS� _orgTimeouts�GetCommTimeouts�byref�_reconfigure_port� PurgeComm� PURGE_TXCLEAR� PURGE_TXABORT� PURGE_RXCLEAR� PURGE_RXABORT�_close)r �portr r r �open# sf "� � � ��� � z Serial.openc C s� | j std��t�� }| jdu rn| jdkrtj|_n tt| jd �d�|_ | jdkr;| j dur;tt| j d �d�|_| j du rAn| j dkrKtj|_ n tt| j d �d�|_ t� | j t�|�� t�| j tj� t�� }t�| j t�|�� | j|_| jtjkr�d|_n&| jtjkr�d|_n | jtjkr�d|_n| jtj kr�d |_nt d � | j���| j tj kr�tj!|_"d|_#n@| j tj$kr�tj%|_"d|_#n2| j tj&kr�tj'|_"d|_#n$| j tj(kr�tj)|_"d|_#n| j tj*kr�tj+|_"d|_#nt d � | j ���| j,tj-k�rtj.|_/n | j,tj0k�rtj1|_/n| j,tj2k�r tj3|_/nt d � | j,���d|_4| j5du �rF| j6�r6tj7|_8n | j9�r=tj:ntj;|_8| j6|_<nQ| j5j=�sTt d � | j5j=���| j5j>�rbt d� | j5j>���| j5j?du�rrt d� | j5j?���| j5j@du�r�t d� | j5j@���| j5jA�r�t d� | j5jA���tjB|_8d|_<| jC�r�tjD|_En | jF�r�tjGntjH|_E| jC|_I| jJ|_K| jJ|_Ld|_Md|_Nd|_OtjP|_QtjR|_St�T| j t�|���s�td� t�U� ���dS )z,Set communication parameters on opened port.z'Can only operate on a valid port handleNr i� r � � � r z%Unsupported number of data bits: {!r}z Unsupported parity mode: {!r}z%Unsupported number of stop bits: {!r}zQUnsupported value for RS485Settings.rts_level_for_tx: {!r} (only True is allowed)zRUnsupported value for RS485Settings.rts_level_for_rx: {!r} (only False is allowed)zPUnsupported value for RS485Settings.delay_before_tx: {!r} (only None is allowed)zPUnsupported value for RS485Settings.delay_before_rx: {!r} (only None is allowed)zJUnsupported value for RS485Settings.loopback: {!r} (only False is allowed)zCCannot configure port, something went wrong. Original message: {!r})Vr r r r8 �_timeout�MAXDWORD�ReadIntervalTimeout�maxr' �ReadTotalTimeoutConstant�_inter_byte_timeout�_write_timeout�WriteTotalTimeoutConstant�SetCommTimeoutsr2 r; � SetCommMask�EV_ERR�DCB� GetCommState� _baudrate�BaudRate� _bytesize�serial�FIVEBITS�ByteSize�SIXBITS� SEVENBITS� EIGHTBITSr( r0 �_parity� PARITY_NONE�NOPARITY�Parity�fParity� PARITY_EVEN� EVENPARITY� PARITY_ODD� ODDPARITY� PARITY_MARK� MARKPARITY� PARITY_SPACE� SPACEPARITY� _stopbits� STOPBITS_ONE� ONESTOPBIT�StopBits�STOPBITS_ONE_POINT_FIVE� ONE5STOPBITS� STOPBITS_TWO� TWOSTOPBITS�fBinary� _rs485_mode�_rtscts�RTS_CONTROL_HANDSHAKE� fRtsControl� _rts_state�RTS_CONTROL_ENABLE�RTS_CONTROL_DISABLE� fOutxCtsFlow�rts_level_for_tx�rts_level_for_rx�delay_before_tx�delay_before_rx�loopback�RTS_CONTROL_TOGGLE�_dsrdtr�DTR_CONTROL_HANDSHAKE� fDtrControl� _dtr_state�DTR_CONTROL_ENABLE�DTR_CONTROL_DISABLE� fOutxDsrFlow�_xonxoff�fOutX�fInX�fNull� fErrorChar� fAbortOnError�XON�XonChar�XOFF�XoffChar� SetCommStater3 )r �timeouts�comDCBr r r r< d s� �� ������ �� ��zSerial._reconfigure_portc C s� | j dur>t�| j | j� | jdur | �� t�| jj� d| _| jdur3| � � t�| jj� d| _t�| j � d| _ dS dS )zinternal close port helperN) r r rP r9 r � cancel_read� CloseHandler6 r � cancel_write�r r r r rB � s �z Serial._closec C s | j r | �� d| _ dS dS )z Close portFN)r# rB r� r r r �close� s �z Serial.closec C �D t �� }t �� }t �| jt�|�t�|��s td�t� � ���|j S )z9Return the number of bytes currently in the input buffer.� ClearCommError failed ({!r})) r �DWORD�COMSTAT�ClearCommErrorr r2 r; r r0 r3 �cbInQue�r �flags�comstatr r r � in_waiting� � zSerial.in_waitingr c C sX | j st� �|dkr�t�| jj� t�� }t�� }t�| j t � |�t � |��s0t d� t �� ���| jdkr;t|j|�n|}|dkr�t �|�}t�� }t�| j ||t � |�t � | j��}|spt�� tjtjfvrpt d� t �� ���t�| j t � | j�t � |�d�}|s�t�� tjkr�t d� t �� ���|jd|j� } t| �S t� } t| �S t� } t| �S )z� Read size bytes from the serial port. If a timeout is set it may return less characters as requested. With no timeout it will block until the requested number of bytes is read. r r� zReadFile failed ({!r})Tz!GetOverlappedResult failed ({!r})N) r# r r � ResetEventr r6 r� r� r� r r2 r; r r0 r3 �timeout�minr� �create_string_buffer�ReadFile� GetLastError� ERROR_SUCCESS�ERROR_IO_PENDING�GetOverlappedResult�ERROR_OPERATION_ABORTED�raw�value�bytes) r �sizer� r� �n�buf�rc�read_ok� result_ok�readr r r r� sH � ���z Serial.readc C s | j st� �t|�}|r�t�� }t�| j|t|�t� |�| j �}| j dkr_|s:t� � tj tjfvr:td�t�� ���t�| j| j t� |�d� t� � tjkrQ|jS |jt|�kr\td��|jS |rdtj nt� � }|tjtjtjfv rtdS |tj tjfv r�t|�S td�t�� ���dS )z2Output the given byte string over the serial port.r zWriteFile failed ({!r})Tz Write timeout)r# r r r r� � WriteFiler �lenr2 r; r rN r� r� r� r r0 r3 r� r� r� r �ERROR_INVALID_USER_BUFFER�ERROR_NOT_ENOUGH_MEMORY)r �datar� �success� errorcoder r r �write/ s0 �z Serial.writec C s | j r t�d� | j sdS dS )zb Flush of file like objects. In this case, wait until all data is written. g�������?N)� out_waiting�time�sleepr� r r r �flushT s �z Serial.flushc C �& | j st� �t�| jtjtjB � dS )z9Clear input buffer, discarding all that is in the buffer.N)r# r r r= r r@ rA r� r r r �reset_input_buffer_ s zSerial.reset_input_bufferc C r� )zs Clear output buffer, aborting the current output and discarding all that is in the buffer. N)r# r r r= r r> r? r� r r r �reset_output_buffere s zSerial.reset_output_bufferc C s2 | j st� �| jrt�| j� dS t�| j� dS )zBSet break: Controls TXD. When active, to transmitting is possible.N)r# r � _break_stater � SetCommBreakr �ClearCommBreakr� r r r �_update_break_staten s zSerial._update_break_statec C �. | j r t�| jtj� dS t�| jtj� dS )z)Set terminal status line: Request To SendN)rx r �EscapeCommFunctionr �SETRTS�CLRRTSr� r r r �_update_rts_statew � zSerial._update_rts_statec C r� )z-Set terminal status line: Data Terminal ReadyN)r� r r� r �SETDTR�CLRDTRr� r r r �_update_dtr_state~ r� zSerial._update_dtr_statec C s. | j st� �t�� }t�| jt�|�� |jS r ) r# r r r� �GetCommModemStatusr r2 r; r� )r �statr r r �_GetCommModemStatus� s zSerial._GetCommModemStatusc C � t j| �� @ dkS )z(Read terminal status line: Clear To Sendr )r � MS_CTS_ONr� r� r r r �cts� � z Serial.ctsc C r� )z)Read terminal status line: Data Set Readyr )r � MS_DSR_ONr� r� r r r �dsr� r� z Serial.dsrc C r� )z)Read terminal status line: Ring Indicatorr )r � MS_RING_ONr� r� r r r �ri� r� z Serial.ric C r� )z)Read terminal status line: Carrier Detectr )r � MS_RLSD_ONr� r� r r r �cd� r� z Serial.cdr! Nc C s |du r|}t �| j||� dS )z� Recommend a buffer size to the driver (device driver can ignore this value). Must be called after the port is opened. N)r r7 r )r �rx_size�tx_sizer r r �set_buffer_size� s zSerial.set_buffer_sizeTc C s8 | j st� �|rt�| jtj� dS t�| jtj� dS )a* Manually control flow - when software flow control is enabled. This will do the same as if XON (true) or XOFF (false) are received from the other device and control the transmission accordingly. WARNING: this function is not portable to different platforms! N)r# r r r� r �SETXON�SETXOFF)r �enabler r r �set_output_flow_control� s z Serial.set_output_flow_controlc C r� )z0Return how many bytes the in the outgoing bufferr� ) r r� r� r� r r2 r; r r0 r3 �cbOutQuer� r r r r� � r� zSerial.out_waitingc C sX t �� }t �| jt�|�t�|�d�}|s(t �� t jt jfv r*t � | j|� dS dS dS )�ACancel a blocking read operation, may be called from other threadFN) r r� r� r r2 r; r� r� �ERROR_IO_INCOMPLETE� CancelIoEx)r � overlappedr� �errr r r �_cancel_overlapped_io� s ��z Serial._cancel_overlapped_ioc C � | � | j� dS )r� N)r� r r� r r r r� � � zSerial.cancel_readc C r� )zBCancel a blocking write operation, may be called from other threadN)r� r r� r r r r� � r� zSerial.cancel_writec C s. |dur |s t d�|���tjj�| |� dS )z$Change the exclusive access setting.Nz.win32 only supports exclusive access (not: {}))r( r0 rX r � exclusive�__set__)r r� r r r r� � s zSerial.exclusive)r )r! N)T)#�__name__� __module__� __qualname__�__doc__� BAUDRATESr rD r< rB r� �propertyr� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r� �setter� __classcell__r r r r r sJ A )% r ) � __future__r r2 r� rX r �serial.serialutilr r r r r r r r r r �<module> s
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