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Code Editor : serialposix.cpython-310.pyc
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When active, no transmitting is possible. N)� _break_state�fcntl�ioctl�fd�TIOCSBRK�TIOCCBRK�r r r r �_update_break_state9 s z(PlatformSpecificBase._update_break_stateN)�__name__� __module__� __qualname__�BAUDRATE_CONSTANTSr r r r r r r r r - s r � Zlinuxi @l *TX i+T,@i i.T i/T � � � � c @ s� e Zd Zi dd�dd�dd�dd�dd �d d �d d �dd�dd�dd�dd�dd�dd�dd�d d �d d �d d!�d"d#d$d%d&d'd(d)d*d+d,d-d.d/d0��Zd1d2� Zd3d4� Zd5d6� Zd7S )8�PlatformSpecificr �2 r$ �K r% �n � � r& � r# �� � i, � iX � i� � i � i` � i� � i�% � i K � i � � i � i i � i � i � � � � � � � � � )i � i � i � � � � � �@B � � �`� 逄 �%& ��- i�g5 i = c C s� t � ddgd �}z(t�| jtj|� |r |d dO < n|d dM < t�| jtj|� W d S tyE } ztd� ||���d }~ww )N�ir � r& i i���z1Failed to update ASYNC_LOW_LATENCY flag to {}: {}) �arrayr r r �termiosZ TIOCGSERIALZ TIOCSSERIAL�IOError� ValueError�format)r r �buf�er r r r � s ��z%PlatformSpecific.set_low_latency_modec C s� t � ddgd �}z-t�| jt|� |d tj M < |d tO < | |d< |d< t�| jt|� W d S t yJ } zt d� ||���d }~ww )NrN r �@ r% r3 r4 z'Failed to set custom baud rate ({}): {}) rP r r r �TCGETS2rQ ZCBAUD�BOTHER�TCSETS2rR rS rT )r r rU rV r r r r � s ���&PlatformSpecific._set_special_baudratec C s8 t � ddgd �}zt�| jt|� |d tO < |d urz|jr*|d tO < n |d t M < |jr?|d t O < n |d t M < |j rT|d t O < n |d t M < |j d urkt |j d �|d< |jd uryt |jd �|d< nd|d< t�| jt|� W d S ty� } ztd�|���d }~ww )NrN r r2 �� r$ r% z Failed to set RS485 mode: {})rP r r r � TIOCGRS485�SER_RS485_ENABLEDZloopback�SER_RS485_RX_DURING_TXZrts_level_for_tx�SER_RS485_RTS_ON_SENDZrts_level_for_rx�SER_RS485_RTS_AFTER_SENDZdelay_before_tx�intZdelay_before_rx� TIOCSRS485rR rS rT )r r rU rV r r r r � s2 ���z PlatformSpecific._set_rs485_modeN)r r r! r" r r r r r r r r( _ sl �������� � � � � ������" r( �cygwinc @ s( e Zd Zddddddddd d d d � Zd S )r( r: r; r< r= r> r? r@ rA rB rC rD ) i � i � rE rF rG rH rI rJ rK rL rM N)r r r! r" r r r r r( � s �r0 �darwinl T c @ sF e Zd Ze�� d �d�ZdZdZe ed �dkr dd� Z d d � Z d S ) r( r% �.�{t �zt r r2 c C s$ t � d|g�}t�| jt|d� d S )NrN r$ )rP r r r � IOSSIOSPEED)r r rU r r r r � s r[ c C �. | j r t�| jtj� dS t�| jtj� dS �z[ Set break: Controls TXD. When active, no transmitting is possible. N�r r r r r( r r r r r r r � � �$PlatformSpecific._update_break_stateN) r r r! �os�uname�splitZ osx_versionr r rb r r r r r r r( � s r, Zbsdr1 ZfreebsdZnetbsdZopenbsdc @ s e Zd Zdd� ZdS )�ReturnBaudratec C s |S )Nr )r �keyr r r � __getitem__� s zReturnBaudrate.__getitem__N)r r r! rt r r r r rr � s rr c @ s" e Zd Ze� ZdZdZdd� ZdS )r( rg rh c C rj rk rl r r r r r � rm rn N)r r r! rr r" r r r r r r r r( � s c @ s e Zd ZdS )r( N)r r r! r r r r r( s �TIOCMGETiT �TIOCMBISiT �TIOCMBICiT �TIOCMSETiT � TIOCM_DTR� TIOCM_RTS� TIOCM_CTSrO � TIOCM_CARrW � TIOCM_RNG� � TIOCM_DSR� �TIOCM_CD�TIOCM_RI�TIOCINQZFIONREADiT �TIOCOUTQiT �Ir i'T r i(T c @ s� e Zd ZdZdd� Zd7dd�Zdd� Zed d � �Zd8d d �Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� Zdd� Zd9d d �Zd d � Zd!d"� Zed#d$� �Zed%d&� �Zed'd(� �Zed)d*� �Zed+d,� �Zd-d.� Zd:d0d1�Zd:d2d3�Zd4d5� Z d6S );�Serialz� Serial port class POSIX implementation. Serial port configuration is done with termios and fcntl. Runs on Linux and many other Un*x like systems. c C s | j du r td��| jrtd��d| _zt�| jtjtjB tj B �| _W n t y> } zd| _t|j d� | j |���d}~ww d\| _ | _d\| _| _z]| jdd� z| jsZ| �� | jsa| �� W n ty~ } z|j t jt jfvrt� W Y d}~nd}~ww | �� t�� \| _ | _t�� \| _| _t�| j tj tj � t�| jtj tj � W nU t y� zt� | j� W n t y� Y nw d| _| jdur�t� | j� d| _| j dur�t� | j � d| _ | jdur�t� | j� d| _| jdur�t� | j� d| _� w d| _dS )zo 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.zcould not open port {}: {}�NNT)� force_update) �_portr �is_openr ro �openZportstr�O_RDWR�O_NOCTTY� O_NONBLOCK�OSError�errnorT �pipe_abort_read_r�pipe_abort_read_w�pipe_abort_write_r�pipe_abort_write_w�_reconfigure_portZ_dsrdtr�_update_dtr_state�_rtscts�_update_rts_staterR �EINVALZENOTTY�_reset_input_buffer�piper �F_SETFL� BaseException�close� Exception)r �msgrV r r r r� 7 sn "�� � ��� � � z Serial.openFc C s� | j du r td��| jdur>| jr6z t�| j tjtjB � W n ty5 } z t|jd� | j |���d}~ww t�| j tj � d}d }}| j durRd}t | j d �}zt�| j �}|\}}} } } } } W n tjyw } ztd� |���d}~ww | tjtjB O } | tjtjB tjB tjB tjB tjB tjB M } dD ]}tt|�r�| tt|� M } q�|tj tj B tj B M }|tj tj B tj!B tj"B M }ttd �r�|tj# M }ttd �r�|tj$ M }z ttd � | j%�� } } W n\ t&�yD z | j'| j% } } W nG t(�yA zt) } } W n t*�y ttd � } } Y nw zt | j%�}W n t+�y1 t+d � | j%���w |dk �r?t+d � | j%���Y nw Y nw | tj, M } | j-dk�rW| tj.O } n,| j-dk�rc| tj/O } n | j-dk�ro| tj0O } n| j-dk�r{| tj1O } nt+d� | j-���| j2t3j4k�r�| tj5 M } n"| j2t3j6k�r�| tj5O } n| j2t3j7k�r�| tj5O } nt+d� | j2���|tj8tj9B M }| j:t3j;k�r�| tj<tj=B t>B M } n_| j:t3j?k�r�| tj=t>B M } | tj<O } nJ| j:t3j@k�r�| t> M } | tj<tj=B O } n5| j:t3jAk�rt>�r| tj<t>B tj=B O } n | j:t3jBk�r&t>�r&| tj<t>B O } | tj= M } nt+d� | j:���ttd��rN| jC�rA|tjDtjEB O }n#|tjDtjEB tjFB M }n| jC�r[|tjDtjEB O }n |tjDtjEB M }ttd��r{| jG�rt| tjHO } n | tjH M } nttd��r�| jG�r�| tjIO } n| tjI M } |dk �s�|dk�r�t+d� |���|| tjJ< |dk �s�|dk�r�t+d� |���|| tjK< |�s�||| | | | | g|k�r�t�L| j tjM||| | | | | g� |du�r�| �N|� | jOdu�r�| �P| jO� dS dS )�,Set communication parameters on opened port.Nz+Can only operate on a valid file descriptorz&Could not exclusively lock port {}: {}r r$ r4 � Could not configure port: {})ZECHOCTLZECHOKE�IUCLC�PARMRKzB{}ZB38400zInvalid baud rate: {!r}r2 r1 r0 r# zInvalid char len: {!r}z$Invalid stop bit specification: {!r}zInvalid parity: {!r}�IXANY�CRTSCTS� CNEW_RTSCTS� zInvalid vmin: {!r}�Invalid vtime: {!r})Qr r Z _exclusiver ZflockZLOCK_EXZLOCK_NBrR r� rT r� ZLOCK_UN�_inter_byte_timeoutrb rQ � tcgetattr�errorZCLOCALZCREADZICANONZECHOZECHOEZECHOKZECHONLZISIGZIEXTEN�hasattr�getattrZOPOSTZONLCRZOCRNLZINLCRZIGNCRZICRNLZIGNBRKr� r� Z _baudrate�AttributeErrorr" �KeyErrorrY � NameErrorrS ZCSIZEZ _bytesizeZCS8ZCS7ZCS6ZCS5Z _stopbits�serialZ STOPBITS_ONEZCSTOPBZSTOPBITS_ONE_POINT_FIVEZ STOPBITS_TWOZINPCKZISTRIPZ_parityZ PARITY_NONEZPARENBZPARODD�CMSPARZ PARITY_EVENZ PARITY_ODDZ PARITY_MARKZ PARITY_SPACEZ_xonxoffZIXONZIXOFFr� r� r� r� �VMIN�VTIME� tcsetattr�TCSANOWr Z _rs485_moder )r r� r� Z custom_baud�vmin�vtime� orig_attr�iflag�oflag�cflag�lflag�ispeed�ospeed�cc�flagr r r r� x s �� ������ � �� ���� � �zSerial._reconfigure_portc C sx | j r:| jdur5t�| j� d| _t�| j� t�| j� t�| j� t�| j� d\| _| _d\| _| _d| _ dS dS )z Close portNr� F)r� r ro r� r� r� r� r� r r r r r� s �z Serial.closec C � t �| jtt�}t�d|�d S )z9Return the number of bytes currently in the input buffer.r� r )r r r r� �TIOCM_zero_str�struct�unpack�r �sr r r � in_waiting! � zSerial.in_waitingr$ c C st | j st� �t� }t| j�}t|�|k r�z6t�| j| jgg g |� � �\}}}| j|v r7t � | jd� W t|�S |s>W t|�S t � | j|t|� �}W nQ t yr } z |j t jt jt jt jt jfvrhtd�|���W Y d}~n9d}~w tjy� } z |d t jt jt jt jt jfvr�td�|���W Y d}~nd}~ww |s�td��|�|� |�� r� t|�S t|�|k st|�S )�� 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\ zread failed: {}Nr zgdevice reports readiness to read but returned no data (device disconnected or multiple access on port?))r� r � bytearrayr �_timeout�len�selectr r� � time_leftro �readr� r� �EAGAIN�EALREADY� EWOULDBLOCK� EINPROGRESS�EINTRr rT r� �extend�expired�bytes)r �sizer� �timeout�ready�_rU rV r r r r� ) sH " "� � �� ��� � �'z Serial.readc C � | j r t�| jd� d S d S �N� x)r� ro �writer� r r r r � cancel_read\ � �zSerial.cancel_readc C r� r� )r� ro r� r� r r r r � cancel_write` r� zSerial.cancel_writec C s� | j st� �t|�}t|� }}t| j�}|dkr�zot�| j|�}|j r'|W S |j sU|� � r2t d��t � | jg| jgg |�� �\}}} |rNt�| jd� W n�|sTt d��n(|�� du s]J �t � | jg| jgg d�\}}} |rwt�| jd� W ny|s}td��||d� }||8 }W nX ty� � ty� } z | jtjtjtjtjtjfvr�td�| ���W Y d} ~ n.d} ~ w t jy� } z | d tjtjtjtjtjfvr�td�| ���W Y d} ~ nd} ~ ww |j s�|� � r�t d��|dks|t|� S )z2Output the given byte string over the serial port.r z Write timeoutr\ Nr$ zwrite failed (select)zwrite failed: {})r� r r r� r Z_write_timeoutro r� r Zis_non_blocking� is_infiniter� r r� r� r� r� r r� r� r� r� r� r� r� rT r� ) r �data�dZtx_len�lengthr� �n�abortr� r� rV r r r r� d s\ "� �� ���� -z Serial.writec C s | j st� �t�| j� dS )zb Flush of file like objects. In this case, wait until all data is written. N)r� r rQ Ztcdrainr r r r r �flush� s z Serial.flushc C s t �| jt j� dS �z9Clear input buffer, discarding all that is in the buffer.N)rQ �tcflushr ZTCIFLUSHr r r r r� � s zSerial._reset_input_bufferc C s | j st� �| �� dS r� )r� r r� r r r r �reset_input_buffer� s zSerial.reset_input_bufferc C s | j st� �t�| jtj� dS )zs Clear output buffer, aborting the current output and discarding all that is in the buffer. N)r� r rQ r� r ZTCOFLUSHr r r r �reset_output_buffer� s zSerial.reset_output_buffer� �?c C s& | j st� �t�| jt|d �� dS )za Send break condition. Timed, returns to idle state after given duration. r� N)r� r rQ Z tcsendbreakr rb )r Zdurationr r r � send_break� s zSerial.send_breakc C �. | j r t�| jtt� dS t�| jtt� dS )z)Set terminal status line: Request To SendN)Z _rts_stater r r rv � TIOCM_RTS_strrw r r r r r� � � zSerial._update_rts_statec C r� )z-Set terminal status line: Data Terminal ReadyN)Z _dtr_stater r r rv � TIOCM_DTR_strrw r r r r r� � r� zSerial._update_dtr_statec C �4 | j st� �t�| jtt�}t�d|�d t @ dkS )z(Read terminal status line: Clear To Sendr� r ) r� r r r r ru r� r� r� r{ r� r r r �cts� � z Serial.ctsc C r� )z)Read terminal status line: Data Set Readyr� r ) r� r r r r ru r� r� r� r r� r r r �dsr� r� z Serial.dsrc C r� )z)Read terminal status line: Ring Indicatorr� r ) r� r r r r ru r� r� r� r� r� r r r �ri� r� z Serial.ric C r� )z)Read terminal status line: Carrier Detectr� r ) r� r r r r ru r� r� r� r� r� r r r �cd� r� z Serial.cdc C r� )z:Return the number of bytes currently in the output buffer.r� r )r r r r� r� r� r� r� r r r � out_waiting� r� zSerial.out_waitingc C s | j st� �| jS )z� For easier use of the serial port instance with select. WARNING: this function is not portable to different platforms! )r� r r r r r r �fileno� s z Serial.filenoTc C �8 | j st� �|rt�| jtj� dS t�| jtj� dS )z� Manually control flow - when software flow control is enabled. This will send XON (true) or XOFF (false) to the other device. WARNING: this function is not portable to different platforms! N)r� r rQ �tcflowr ZTCIONZTCIOFF�r Zenabler r r �set_input_flow_control� � z Serial.set_input_flow_controlc C r� )z� Manually control flow of outgoing data - when hardware or software flow control is enabled. WARNING: this function is not portable to different platforms! N)r� r rQ r� r ZTCOONZTCOOFFr r r r �set_output_flow_control r z Serial.set_output_flow_controlc C s ddl }|�dt� dS )zDEPRECATED - has no user Nz0nonblocking() has no effect, already nonblocking)�warnings�warn�DeprecationWarning)r r r r r � nonblocking s zSerial.nonblockingN)F�r$ )r� �T) r r r! �__doc__r� r� r� �propertyr� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r r r r r r r r� 0 sB A 36 r� c @ s e Zd ZdZddd�ZdS )�PosixPollSerialz� Poll based read implementation. Not all systems support poll properly. However this one has better handling of errors, such as a device disconnecting while it's in use (e.g. USB-serial unplugged). r$ c C sN | j st� �t� }t| j�}t�� }|�| jtj tj B tj B tj B � |�| j tj tj B tj B tj B � |dkr�t|�|k r�|�|jrEdn|�� d �D ]\}}|| j krW n|tj tj B tj B @ rftd��qL|| j krxt�| j d� t|�S t�| j|t|� �}|�|� |�� s�| jdur�| jdkr�|s� t|�S t|�|k s>t|�S )r� r Nr\ zdevice reports error (poll))r� r r� r r� r� �poll�registerr ZPOLLINZPOLLERRZPOLLHUPZPOLLNVALr� r� r� r� r ro r� r� r� r� r� )r r� r� r� r r ZeventrU r r r r� & s@ "" $ � � ��� �zPosixPollSerial.readNr )r r r! r r� r r r r r s r c s2 e Zd ZdZd� fdd� Zd dd�Ze� Z� ZS ) � VTIMESerialab Implement timeout using vtime of tty device instead of using select. This means that no inter character timeout can be specified and that the error handling is degraded. Overall timeout is disabled when inter-character timeout is used. Note that this implementation does NOT support cancel_read(), it will just ignore that. Tc s t t| ��� t�| jtjd� | jdur d}t| jd �}n| jdu r)d}d}n d}t| jd �}zt � | j�}|\}}}}} } } W n t j yX } zt � d�| ���d} ~ ww |dk sa|dkrhtd�|���|| t j< || t j< t �| jt j||||| | | g� dS )r� r Nr$ r4 r� r� r� )�superr r� r r r� r� rb r� rQ r� r� r� r rT rS r� r� r� r� ) r r� r� r� r� r� r� r� r� r� r� r� r� �� __class__r r r� U s4 �� �z VTIMESerial._reconfigure_portr$ c C s` | j st� �t� }t|�|k r,t�| j|t|� �}|s! t|�S |�|� t|�|k st|�S )r� ) r� r r� r� ro r� r r� r� )r r� r� rU r r r r� s s � �zVTIMESerial.readr r ) r r r! r r� r� r r� � __classcell__r r r r r I s r )=Z __future__r r� r ro r� r� �sysrQ r� Zserial.serialutilr r r r r r �objectr r� �platform�lowerZplatrP rX rZ rY r] rc r^ r` ra r_ r( ri rr r� ru rv rw rx ry rz r{ r| r} r r� r� r� r� r� Zpackr� r� r� r r r� r r r r r r �<module> s� b��� r*
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