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serialposix.cpython-36.pyc
3 M�]W�s � @ sX d dl Z d dlZd dlZd dlZd dlZd dlZd dlZd dlZd dlZd dl m Z m Z m Z m Z mZ G dd� de�Zejj� Zedd� dkr�d dlZdZdZd Zd Zd Zd Zd ZdZ dZ G dd� de�Z nZedkr�G dd� de�Z n@edd� dk�rd dlZdZ G dd� de�Z nG dd� de�Z e edd�Z!e edd �Z"e ed d �Z#e ed d �Z$e ed!d �Z%e ed"d�Z&e ed#d$�Z'e ed%d&�Z(e ed'd(�Z)e ed)d*�Z*e ed+e(�Z+e ed,e)�Z,e-ed-��r�ej.Z.n e ed.d/�Z.e ed0d1�Z/ej0d2d �Z1ej0d2e&�Z2ej0d2e%�Z3e ed3d4�Z4e ed5d6�Z5d7Z6G d8d9� d9e e �Z7G d:d;� d;e7�Z8G d<d=� d=e7�Z9dS )>� N)� SerialBase�SerialException�to_bytes�portNotOpenError�writeTimeoutErrorc @ s e Zd Zi Zdd� Zdd� ZdS )�PlatformSpecificBasec C s t d��d S )Nz9non-standard baudrates are not supported on this platform)�NotImplementedError)�self�baudrate� r �!/usr/lib/python3.6/serialposix.py�_set_special_baudrate. s z*PlatformSpecificBase._set_special_baudratec C s t d��d S )Nz$RS485 not supported on this platform)r )r �rs485_settingsr r r �_set_rs485_mode1 s z$PlatformSpecificBase._set_rs485_modeN)�__name__� __module__� __qualname__�BAUDRATE_CONSTANTSr r r r r r r + s r � �linuxl *TX i+T,@i i.T i/T � � � � c @ s` e Zd Zddddddddd d d d d ddddddddddddddd d d d d � Zd!d"� Zd#d$� Zd%S )&�PlatformSpecificr r r � r r � � � � � � � � � � i i i i i i i i i i i i i i i ) r �2 �K �n � � �� i, iX i� i i` i� i�% i K i � i � i � i � i i � i � i i@B i � i`� i�� i�%& i��- i�g5 i = c C s� t j ddgd �}yXtj| jt|� |d tj M < |d tO < | |d< |d< tj| jt|� W n2 t k r� } zt dj ||���W Y d d }~X nX d S )N�ir �@ r r r z'Failed to set custom baud rate ({}): {}) �array�fcntl�ioctl�fd�TCGETS2�termiosZCBAUD�BOTHER�TCSETS2�IOError� ValueError�format)r r �buf�er r r r l s z&PlatformSpecific._set_special_baudratec C sF t j ddgd �}y�tj| jt|� |d tO < |d k r�|jrT|d tO < n|d t M < |jr~|d t O < n|d t M < |j r�|d t O < n|d t M < |j d k r�t |j d �|d< |jd k r�t |jd �|d< nd|d< tj| jt|� W n2 tk �r@ } ztdj|���W Y d d }~X nX d S )Nr, r r i� r r z Failed to set RS485 mode: {})r. r/ r0 r1 � TIOCGRS485�SER_RS485_ENABLEDZloopback�SER_RS485_RX_DURING_TXZrts_level_for_tx�SER_RS485_RTS_ON_SENDZrts_level_for_rx�SER_RS485_RTS_AFTER_SENDZdelay_before_tx�intZdelay_before_rx� TIOCSRS485r6 r7 r8 )r r r9 r: r r r r | s, z PlatformSpecific._set_rs485_modeN)r r r r r r r r r r r I sB r �cygwinc @ s( e Zd Zddddddddd d d d � Zd S )r i i i i i i i i i i i ) i � i � i � i � i i@B i � i`� i�� i�%& i��- N)r r r r r r r r r � s r �darwinl T c @ s6 e Zd Zej� d jd�Zeed �dkr2dd� ZdS )r r �.r r c C s$ t j d|g�}tj| jt|d� d S )Nr, r )r. r/ r0 r1 � IOSSIOSPEED)r r r9 r r r r � s z&PlatformSpecific._set_special_baudrateN) r r r �os�uname�splitZ osx_versionr@ 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_CTS� � TIOCM_CARr- � TIOCM_RNG� � TIOCM_DSR� �TIOCM_CD�TIOCM_RI�TIOCINQZFIONREADiT �TIOCOUTQiT �I�TIOCSBRKi'T �TIOCCBRKi(T i @c @ s� e Zd ZdZdd� Zd7dd�Zdd� Zed d � �Zd8d d �Z dd� Z dd� Z dd� Z dd� Z dd� Zdd� Zd9dd �Zd d � Zd d � Zd!d"� Zed#d$� �Zed%d&� �Zed'd(� �Zed)d*� �Zed+d,� �Zd-d.� Zd:d0d1�Zd;d2d3�Zd4d5� Z d6S )<�Serialz� Serial port class POSIX implementation. Serial port configuration is done with termios and fcntl. Runs on Linux and many other Un*x like systems. c , C s| | j dkrtd��| jr td��d| _y"tj| jtjtjB tj B �| _W n> t k r� } z"d| _t|j dj | j |���W Y dd}~X nX y| j dd� W n2 ytj| j� W n Y nX d| _� Y nX d| _y | js�| j� | js�| j� W n4 tk �r& } z|j dk�rn� W Y dd}~X nX | j� tj� \| _| _tj� \| _| _tj| jtjtj � tj| jtjtj � dS )zo Open port with current settings. This may throw a SerialException if the port cannot be opened.Nz.Port must be configured before it can be used.zPort is already open.zcould not open port {}: {}T)� force_update� ) Z_portr �is_openr1 rF �openZportstr�O_RDWR�O_NOCTTY� O_NONBLOCK�OSError�errnor8 �_reconfigure_port�closeZ_dsrdtr�_update_dtr_state�_rtscts�_update_rts_stater6 �reset_input_buffer�pipe�pipe_abort_read_r�pipe_abort_read_w�pipe_abort_write_r�pipe_abort_write_wr/ �F_SETFL)r �msgr: r r r ra � sD "( z Serial.openFc , C s~ | j dkrtd��d}d }}| jdk r:d}t| jd �}y"tj| j �}|\}}}} } } } W n2 tjk r� } ztdj| ���W Y dd} ~ X nX |tjtj B O }| tj tj B tj B tj B tjB tjB tjB M } x&d D ] }tt|�r�| tt|� M } q�W |tjtjB tjB M }|tjtjB tjB tjB M }ttd ��rF|tj M }ttd ��r^|tj M }yttd j| j �� } } W n� t k �r y| j | j } } W nt t k �r ttd � } } yt| j �}W n& t k �r� t d j| j ���Y n X |dk �rt d j| j ���Y nX Y nX |tj! M }| j"dk�r>|tj#O }nX| j"dk�rV|tj$O }n@| j"dk�rn|tj%O }n(| j"dk�r�|tj&O }nt dj| j"���| j't(j)k�r�|tj* M }nD| j't(j+k�r�|tj*O }n*| j't(j,k�r�|tj*O }nt dj| j'���|tj-tj.B M }| j/t(j0k�r*|tj1tj2B M }n�| j/t(j3k�rP|tj2 M }|tj1O }n�| j/t(j4k�rp|tj1tj2B O }n�| j/t(j5k�r�t6dd� dk�r�|tj1t7B tj2B O }nL| j/t(j8k�r�t6dd� dk�r�|tj1t7B O }|tj2 M }nt dj| j/���ttd��r2| j9�r|tj:tj;B O }n|tj:tj;B tj<B M }n,| j9�rL|tj:tj;B O }n|tj:tj;B M }ttd��r�| j=�r~|tj>O }n |tj> M }n,ttd��r�| j=�r�|tj?O }n |tj? M }|dk �s�|dk�r�t dj|���|| tj@< |dk �s�|dk�rt dj|���|| tjA< |�s.|||| | | | g|k�rNtjB| j tjC|||| | | | g� |dk �rb| jD|� | jEdk �rz| jF| jE� dS ) z,Set communication parameters on opened port.Nz+Can only operate on a valid file descriptorr r r z Could not configure port: {}�ECHOCTL�ECHOKE�IUCLC�PARMRKzB{}ZB38400zInvalid baud rate: {!r}r r r r zInvalid char len: {!r}z$Invalid stop bit specification: {!r}r zInvalid parity: {!r}�IXANY�CRTSCTS� CNEW_RTSCTS� zInvalid vmin: {!r}zInvalid vtime: {!r})rt ru )Gr1 r �_inter_byte_timeoutr@ r3 � tcgetattr�errorr8 ZCLOCALZCREADZICANONZECHOZECHOEZECHOKZECHONLZISIGZIEXTEN�hasattr�getattrZOPOSTZONLCRZOCRNLZINLCRZIGNCRZICRNLZIGNBRKrv rw Z _baudrate�AttributeErrorr �KeyErrorr7 ZCSIZEZ _bytesizeZCS8ZCS7ZCS6ZCS5Z _stopbits�serialZ STOPBITS_ONEZCSTOPBZSTOPBITS_ONE_POINT_FIVEZ STOPBITS_TWOZINPCKZISTRIPZ_parityZ PARITY_NONEZPARENBZPARODDZ PARITY_EVENZ PARITY_ODDZ PARITY_MARK�plat�CMSPARZ PARITY_SPACEZ_xonxoffZIXONZIXOFFrx rj ry rz �VMIN�VTIME� tcsetattr�TCSANOWr Z _rs485_moder )r r^ Z custom_baud�vmin�vtime� orig_attr�iflag�oflag�cflag�lflag�ispeed�ospeed�ccrs �flagr r r rg s� . zSerial._reconfigure_portc C st | j rp| jdk rjtj| j� d| _tj| j� tj| j� tj| j� tj| j� d\| _| _d\| _| _d| _ dS )z Close portNF)NN)NN)r` r1 rF rh ro rn rq rp )r r r r rh � s z Serial.closec C s t j| jtt�}tjd|�d S )z9Return the number of bytes currently in the input buffer.rZ r )r/ r0 r1 rX �TIOCM_zero_str�struct�unpack)r �sr r r � in_waiting� s zSerial.in_waitingr c C sX | j s t�t� }| j}�x6t|�|k �rNyvtj� }tj| j| jgg g |�\}}}| j|krjt j | jd� P |spP t j | j|t|� �}|s�t d��|j |� W n� t k r� } z,|jtjkr�|jtjkr�t dj|���W Y dd}~X nD tjk �r( } z$|d tjk�rt dj|���W Y dd}~X nX |dk r|tj� | 8 }|dkrP qW 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. i� zgdevice reports readiness to read but returned no data (device disconnected or multiple access on port?)zread failed: {}Nr )r` r � bytearray�_timeout�len�time�selectr1 rn rF �readr �extendre rf �EAGAINZEINTRr8 r~ �bytes) r �sizer� �timeoutZ start_time�ready�_r9 r: r r r r� � s: z Serial.readc C s t j| jd� d S )N� x)rF �writero )r r r r � cancel_read� s zSerial.cancel_readc C s t j| jd� d S )Nr� )rF r� rq )r r r r � cancel_write� s zSerial.cancel_writec C s� | j s t�t|�}t|�}| j}|r8|dkr8|tj� 7 }�xb|dk�r�y�tj| j|�}|dkrb|S |r�|dkr�|tj� }|dk r�t �t j | j g| jgg |�\}}} |r�tj | j d� P |s�t �nN|dks�t �t j | j g| jgg d�\}}} |�rtj | j d� P |�std��||d� }||8 }W q< tk �r> � Y q< tk �r� } z>| jtjk�rltdj| ���|�r�|tj� dk �r�t �W Y dd} ~ X q<X q<W t|�S )z2Output the given byte string over the serial port.r i� Nr zwrite failed (select)zwrite failed: {})r` r r r� Z_write_timeoutr� rF r� r1 r r� rp r� �AssertionErrorr re rf r� r8 ) r �data�dZtx_lenr� �nZtimeleft�abortr� r� �vr r r r� � sN z Serial.writec C s | j s t�tj| j� dS )zb Flush of file like objects. In this case, wait until all data is written. N)r` r r3 Ztcdrainr1 )r r r r �flush s z Serial.flushc C s | j s t�tj| jtj� dS )z9Clear input buffer, discarding all that is in the buffer.N)r` r r3 �tcflushr1 ZTCIFLUSH)r r r r rl ( s zSerial.reset_input_bufferc C s | j s t�tj| jtj� dS )zs Clear output buffer, aborting the current output and discarding all that is in the buffer. N)r` r r3 r� r1 ZTCOFLUSH)r r r r �reset_output_buffer. s zSerial.reset_output_buffer� �?c C s$ | j s t�tj| jt|d �� dS )za Send break condition. Timed, returns to idle state after given duration. g �?N)r` r r3 Z tcsendbreakr1 r@ )r Zdurationr r r � send_break7 s zSerial.send_breakc C s( | j rtj| jt� ntj| jt� dS )zS Set break: Controls TXD. When active, no transmitting is possible. N)Z _break_stater/ r0 r1 r[ r\ )r r r r �_update_break_state@ s zSerial._update_break_statec C s, | j rtj| jtt� ntj| jtt� dS )z)Set terminal status line: Request To SendN)Z _rts_stater/ r0 r1 rJ � TIOCM_RTS_strrK )r r r r rk I s zSerial._update_rts_statec C s, | j rtj| jtt� ntj| jtt� dS )z-Set terminal status line: Data Terminal ReadyN)Z _dtr_stater/ r0 r1 rJ � TIOCM_DTR_strrK )r r r r ri P s zSerial._update_dtr_statec C s2 | j s t�tj| jtt�}tjd|�d t @ dkS )z(Read terminal status line: Clear To SendrZ r ) r` r r/ r0 r1 rI r� r� r� rO )r r� r r r �ctsW s z Serial.ctsc C s2 | j s t�tj| jtt�}tjd|�d t @ dkS )z)Read terminal status line: Data Set ReadyrZ r ) r` r r/ r0 r1 rI r� r� r� rT )r r� r r r �dsr_ s z Serial.dsrc C s2 | j s t�tj| jtt�}tjd|�d t @ dkS )z)Read terminal status line: Ring IndicatorrZ r ) r` r r/ r0 r1 rI r� r� r� rW )r r� r r r �rig s z Serial.ric C s2 | j s t�tj| jtt�}tjd|�d t @ dkS )z)Read terminal status line: Carrier DetectrZ r ) r` r r/ r0 r1 rI r� r� r� rV )r r� r r r �cdo s z Serial.cdc C s t j| jtt�}tjd|�d S )z:Return the number of bytes currently in the output buffer.rZ r )r/ r0 r1 rY r� r� r� )r r� r r r � out_waitingy s zSerial.out_waitingc C s | j s t�| jS )z� For easier use of the serial port instance with select. WARNING: this function is not portable to different platforms! )r` r r1 )r r r r �fileno� s z Serial.filenoTc C s4 | j s t�|r tj| jtj� ntj| 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 r3 �tcflowr1 ZTCIONZTCIOFF)r �enabler r r �set_input_flow_control� s z Serial.set_input_flow_controlc C s4 | j s t�|r tj| jtj� ntj| jtj� dS )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 r3 r� r1 ZTCOONZTCOOFF)r r� r r r �set_output_flow_control� s z Serial.set_output_flow_controlc C s ddl }|jdt� 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)T) r r r �__doc__ra rg rh �propertyr� r� r� r� r� r� rl r� r� r� rk ri r� r� r� r� r� r� r� r� r� r r r r r] � s4 . 31 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 s� | j s t�t� }tj� }|j| jtjtjB tj B tj B � |dkr�x�t |�|k r�x:|j| j d �D ]&\}}|tjtj B tj B @ rbt d��qbW tj| j|t |� �}|j|� | j dk r�| j dks�| jdk rD| jdkrD| rDP qDW 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 i� zdevice reports error (poll)N)r` r r� r� �poll�registerr1 ZPOLLINZPOLLERRZPOLLHUPZPOLLNVALr� r� r rF r� r� r| r� )r r� r� r� r1 Zeventr9 r r r r� � s " zPosixPollSerial.readN)r )r r r r� r� r r r r r� � s r� c s, e Zd ZdZd� fdd� Zd dd�Z� ZS ) � VTIMESeriala 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. Tc s� t t| �j� tj| jtjd� | jdk r>d}t| jd �}nd}t| jd �}y"t j | j�}|\}}}}} } } W n4 t j k r� } zt j dj| ���W Y dd} ~ X nX |dk s�|dkr�tdj|���|| t j< || t j< t j| jt j||||| | | g� dS )z,Set communication parameters on opened port.r Nr r z Could not configure port: {}r{ zInvalid vtime: {!r})�superr� rg r/ r1 rr r| r@ r� r3 r} r~ r� r r8 r7 r� r� r� r� ) r r^ r� r� r� r� r� r� r� r� r� r� rs )� __class__r r rg � s( " z VTIMESerial._reconfigure_portr c C sP | j s t�t� }x6t|�|k rFtj| j|t|� �}|s:P |j|� qW 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 r� r� rF r� r1 r� r� )r r� r� r9 r r r r� � s zVTIMESerial.read)T)r )r r r r� rg r� � __classcell__r r )r� r r� � s r� ):rf r/ rF r� r� �sysr3 r� r� Zserial.serialutilr r r r r �objectr �platform�lowerr� r. r2 r5 r4 r; rA r< r> r? r= r rE r� rI rJ rK rL rM rN rO rQ rR rT rV rW r rX rY �packr� r� r� r[ r\ r� r] r� r� r r r r �<module> st P J#