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편집 파일: serialwin32.cpython-39.opt-1.pyc
a �ֽXwN � @ sT d dl Z d dlZd dlmZ d dlZd dlmZmZmZmZm Z G dd� de�Z dS )� N)�win32)� SerialBase�SerialException�to_bytes�portNotOpenError�writeTimeoutErrorc 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$d%� �Ze d&d'� �Ze d(d)� �Zd<d,d-�Zd=d/d0�Ze d1d2� �Zd3d4� Z d5d6� Z d7d8� Z e j j!d9d:� �Z � Z"S )>�Serialz5Serial port implementation for Win32 based on ctypes.)�2 �K �n � � �� i, iX i� i i` i� i�% i K i � i � i � c s, d | _ d | _d | _tt| �j|i |�� d S �N)� _port_handle�_overlapped_read�_overlapped_write�superr �__init__)�self�args�kwargs�� __class__� �6/usr/lib/python3.9/site-packages/serial/serialwin32.pyr s zSerial.__init__c C s� | j du rtd��| jr td��| j}z.|�� �d�rRt|dd� �dkrRd| }W n tyf Y n0 t� |tj tj B ddtj tj tjB d�| _| jtjkr�d| _td �| jt�� ���z�t�� | _t�dd dd�| j_t�� | _t�dddd�| j_t�| jd d � t�� | _ t� | jt� | j �� | � � t� | jtj!tj"B tj#B tj$B � W n. z | �%� W n Y n0 d| _� Y n0 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.ZCOM� � z\\.\r z could not open port {!r}: {!r}� � T)&Z_portr �is_open�name�upper� startswith�int� ValueErrorr Z CreateFileZ GENERIC_READZ GENERIC_WRITEZ OPEN_EXISTING�FILE_ATTRIBUTE_NORMALZFILE_FLAG_OVERLAPPEDr ZINVALID_HANDLE_VALUE�formatZportstr�ctypes�WinErrorZ OVERLAPPEDr Z CreateEvent�hEventr � SetupComm� COMMTIMEOUTS� _orgTimeoutsZGetCommTimeouts�byref�_reconfigure_port� PurgeComm� PURGE_TXCLEAR� PURGE_TXABORT� PURGE_RXCLEAR� PURGE_RXABORT�_close)r �portr r r �open! s^ " � ��� z Serial.openc C s� | j std��t�� }| jdu r"n*| jdkr6tj|_ntt| jd �d�|_ | jdkrv| j durvtt| j d �d�|_| j du r�n*| j dkr�tj|_ ntt| j d �d�|_ t� | j t�|�� t�| j tj� t�� }t�| j t�|�� | j|_| jtjk�r d|_nR| jtjk�r d|_n<| jtjk�r6d|_n&| jtj k�rLd |_nt d � | j���| j tj k�rztj!|_"d|_#n�| j tj$k�r�tj%|_"d|_#nj| j tj&k�r�tj'|_"d|_#nL| j tj(k�r�tj)|_"d|_#n.| j tj*k�r�tj+|_"d|_#nt d � | j ���| j,tj-k�rtj.|_/n@| j,tj0k�r2tj1|_/n(| j,tj2k�rJtj3|_/nt d � | j,���d|_4| j5du �r�| j6�r~tj7|_8n| j9�r�tj:ntj;|_8| j6|_<n�| j5j=�s�t d � | j5j=���| j5j>�r�t d� | j5j>���| j5j?du�r�t d� | j5j?���| j5j@du�rt d� | j5j@���| j5jA�r2t d� | j5jA���tjB|_8d|_<| jC�rRtjD|_En| jF�r`tjGntjH|_E| jC|_I| jJ|_K| jJ|_Ld|_Md|_Nd|_OtjP|_QtjR|_St�T| j t�|���s�td� t�U� ���dS )z,Set communication parameters on opened port.z'Can only operate on a valid port handleNr i� r � � � r z%Unsupported number of data bits: {!r}z Unsupported parity mode: {!r}z%Unsupported number of stop bits: {!r}z:Unsupported value for RS485Settings.rts_level_for_tx: {!r}z:Unsupported value for RS485Settings.rts_level_for_rx: {!r}z9Unsupported value for RS485Settings.delay_before_tx: {!r}z9Unsupported value for RS485Settings.delay_before_rx: {!r}z2Unsupported value for RS485Settings.loopback: {!r}zCCannot configure port, something went wrong. Original message: {!r})Vr r r r, �_timeoutZMAXDWORDZReadIntervalTimeout�maxr$ ZReadTotalTimeoutConstantZ_inter_byte_timeout�_write_timeoutZWriteTotalTimeoutConstant�SetCommTimeoutsr( r. Z SetCommMaskZEV_ERRZDCBZ GetCommStateZ _baudrateZBaudRateZ _bytesize�serialZFIVEBITSZByteSizeZSIXBITSZ SEVENBITSZ EIGHTBITSr% r' Z_parityZ PARITY_NONEZNOPARITYZParityZfParityZ PARITY_EVENZ EVENPARITYZ PARITY_ODDZ ODDPARITYZ PARITY_MARKZ MARKPARITYZ PARITY_SPACEZ SPACEPARITYZ _stopbitsZ STOPBITS_ONEZ ONESTOPBITZStopBitsZSTOPBITS_ONE_POINT_FIVEZ ONE5STOPBITSZ STOPBITS_TWOZ TWOSTOPBITSZfBinaryZ _rs485_modeZ_rtsctsZRTS_CONTROL_HANDSHAKEZ fRtsControl� _rts_stateZRTS_CONTROL_ENABLEZRTS_CONTROL_DISABLEZ fOutxCtsFlowZrts_level_for_txZrts_level_for_rxZdelay_before_txZdelay_before_rxZloopbackZRTS_CONTROL_TOGGLEZ_dsrdtrZDTR_CONTROL_HANDSHAKEZ fDtrControl� _dtr_stateZDTR_CONTROL_ENABLEZDTR_CONTROL_DISABLEZ fOutxDsrFlowZ_xonxoffZfOutXZfInXZfNullZ fErrorCharZ fAbortOnErrorZXONZXonCharZXOFFZXoffCharZ SetCommStater) )r ZtimeoutsZcomDCBr r r r/ b s� �� ������ �� ��zSerial._reconfigure_portc C s| | j durxt�| j | j� | jdur@| �� t�| jj� d| _| jdurf| � � t�| jj� d| _t�| j � d| _ dS )zinternal close port helperN) r r r> r- r � cancel_readZ CloseHandler* r � cancel_write�r r r r r5 � s z Serial._closec C s | j r| �� d| _ dS )z Close portFN)r r5 rD r r r �close� s z Serial.closec C sD 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 r( r. r r' r) �cbInQue�r �flags�comstatr r r � in_waiting� s zSerial.in_waitingr c C sR | j s t�|dk�rDt�| jj� t�� }t�� }t�| j t � |�t � |��s`t d� t �� ���| jdkrvt|j|�n|}|dk�r<t �|�}t�� }t�| j ||t � |�t � | j��}|s�t�� tjtjfvr�t d� t �� ���t�| j t � | j�t � |�d�}|�s*t�� tjk�r*t d� t �� ���|jd|j� } nt� } nt� } 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 rF zReadFile failed ({!r})Tz!GetOverlappedResult failed ({!r})N) r r r Z ResetEventr r* rG rH rI r r( r. r r' r) �timeout�minrJ Zcreate_string_bufferZReadFile� GetLastError� ERROR_SUCCESS�ERROR_IO_PENDING�GetOverlappedResult�ERROR_OPERATION_ABORTED�raw�value�bytes) r �sizerL rM �n�buf�rcZread_okZ result_ok�readr r r r] sD � �z Serial.readc C s | j s t�t|�}|�rt�� }t�| j|t|�t� |�| j �}| j dkr�|stt� � tj tjfvrttd�t�� ���t�| j| j t� |�d� t� � tjkr�|jS |jt|�kr�t�|jS |r�tj nt� � }|tjtjtjfv r�dS |tj tjfv � r�t|�S td�t�� ���ndS dS )z2Output the given byte string over the serial port.r zWriteFile failed ({!r})TN)r r r r rG Z WriteFiler �lenr( r. r r= rQ rR rS r r' r) rT rU rW r ZERROR_INVALID_USER_BUFFERZERROR_NOT_ENOUGH_MEMORY)r �datarZ �success� errorcoder r r �write- s0 �z Serial.writec C s | j rt�d� q dS )zb Flush of file like objects. In this case, wait until all data is written. g�������?N)� out_waiting�time�sleeprD r r r �flushR s z Serial.flushc C s$ | j s t�t�| jtjtjB � dS )z9Clear input buffer, discarding all that is in the buffer.N)r r r r0 r r3 r4 rD r r r �reset_input_buffer] s zSerial.reset_input_bufferc C s$ | j s t�t�| jtjtjB � dS )zs Clear output buffer, aborting the current output and discarding all that is in the buffer. N)r r r r0 r r1 r2 rD r r r �reset_output_bufferc s zSerial.reset_output_bufferc C s. | j s t�| jr t�| j� n t�| j� dS )zBSet break: Controls TXD. When active, to transmitting is possible.N)r r Z _break_stater Z SetCommBreakr ZClearCommBreakrD r r r �_update_break_statel s zSerial._update_break_statec C s, | j rt�| jtj� nt�| jtj� dS )z)Set terminal status line: Request To SendN)r@ r �EscapeCommFunctionr ZSETRTSZCLRRTSrD r r r �_update_rts_stateu s zSerial._update_rts_statec C s, | j rt�| jtj� nt�| jtj� dS )z-Set terminal status line: Data Terminal ReadyN)rA r rj r ZSETDTRZCLRDTRrD r r r �_update_dtr_state| s zSerial._update_dtr_statec C s, | j s t�t�� }t�| jt�|�� |jS r ) r r r rG ZGetCommModemStatusr r( r. rW )r �statr r r �_GetCommModemStatus� s zSerial._GetCommModemStatusc C s t j| �� @ dkS )z(Read terminal status line: Clear To Sendr )r Z MS_CTS_ONrn rD r r r �cts� s z Serial.ctsc C s t j| �� @ dkS )z)Read terminal status line: Data Set Readyr )r Z MS_DSR_ONrn rD r r r �dsr� s z Serial.dsrc C s t j| �� @ dkS )z)Read terminal status line: Ring Indicatorr )r Z MS_RING_ONrn rD r r r �ri� s z Serial.ric C s t j| �� @ dkS )z)Read terminal status line: Carrier Detectr )r Z MS_RLSD_ONrn rD r r r �cd� s 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 before the port is opened. N)r r+ r )r Zrx_sizeZtx_sizer r r �set_buffer_size� s zSerial.set_buffer_sizeTc C s4 | j s t�|r t�| jtj� nt�| 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 rj r ZSETXONZSETXOFF)r �enabler r r �set_output_flow_control� s z Serial.set_output_flow_controlc C sD t �� }t �� }t �| jt�|�t�|��s>td�t� � ���|j S )z0Return how many bytes the in the outgoing bufferrF ) r rG rH rI r r( r. r r' r) ZcbOutQuerK r r r rc � s zSerial.out_waitingc C sP t �� }t �| jt�|�t�|�d�}|sLt �� t jt jfv rLt � | j|� dS )�ACancel a blocking read operation, may be called from other threadFN) r rG rT r r( r. rQ rS ZERROR_IO_INCOMPLETEZ CancelIoEx)r Z overlappedr\ �errr r r �_cancel_overlapped_io� s �z Serial._cancel_overlapped_ioc C s | � | j� dS )rv N)rx r rD r r r rB � s zSerial.cancel_readc C s | � | j� dS )zBCancel a blocking write operation, may be called from other threadN)rx r rD r r r rC � s zSerial.cancel_writec C s0 |dur |s t d�|���ntjj�| |� dS )z$Change the exclusive access setting.Nz.win32 only supports exclusive access (not: {}))r% r' r? r � exclusive�__set__)r ry r r r ry � s zSerial.exclusive)r )r N)T)#�__name__� __module__� __qualname__�__doc__Z BAUDRATESr r7 r/ r5 rE �propertyrN r] rb rf rg rh ri rk rl rn ro rp rq rr rs ru rc rx rB rC r ry �setter� __classcell__r r r r r sH A )% r ) r( rd r? r Zserial.serialutilr r r r r r r r r r �<module> s