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serialposix.cpython-310.pyc
o 1_7 @ s d dl mZ d dlZd dlZd dlZd dlZd dlZd dlZd dlZd dl Z d dl m Z m Z m Z mZmZmZ G dd deZd Zej Zedd dkrnd dlZdZd Zd Zd Zd Zd Z dZ dZ dZ dZ G dd deZ!n]edkr{G dd deZ!nPedd dkrd dlZdZ"G dd deZ!n9edd dksedd d ksedd d ksedd d krG d d! d!eZ#G d"d deZ!nG d#d deZ!e$ed$d%Z%e$ed&d'Z&e$ed(d)Z'e$ed*d+Z(e$ed,dZ)e$ed-dZ*e$ed.d/Z+e$ed0d1Z,e$ed2d3Z-e$ed4d5Z.e$ed6e,Z/e$ed7e-Z0e1ed8r ej2Z2ne$ed9d:Z2e$ed;d<Z3e4d=d Z5e4d=e*Z6e4d=e)Z7e$ed>d?Z8e$ed@dAZ9G dBdC dCe e!Z:G dDdE dEe:Z;G dFdG dGe:Z<dS )H )absolute_importN) SerialBaseSerialExceptionto_bytesPortNotOpenErrorSerialTimeoutExceptionTimeoutc @ s0 e Zd Zi Zdd Zdd Zdd Zdd Zd S ) PlatformSpecificBasec C t d)Nz9non-standard baudrates are not supported on this platformNotImplementedError)selfbaudrate r 4/usr/lib/python3/dist-packages/serial/serialposix.py_set_special_baudrate0 z*PlatformSpecificBase._set_special_baudratec C r )Nz$RS485 not supported on this platformr )r rs485_settingsr r r _set_rs485_mode3 r z$PlatformSpecificBase._set_rs485_modec C r )Nz*Low latency not supported on this platformr )r low_latency_settingsr r r set_low_latency_mode6 r z)PlatformSpecificBase.set_low_latency_modec C s* | j r t| jt dS t| jt dS )zS Set break: Controls TXD. When active, no transmitting is possible. N) _break_statefcntlioctlfdTIOCSBRKTIOCCBRKr r r r _update_break_state9 s z(PlatformSpecificBase._update_break_stateN)__name__ __module__ __qualname__BAUDRATE_CONSTANTSr r r r r r r r r - s r Zlinuxi @l *TX i+T,@i i.T i/T c @ s e Zd Zi dddddddddd d d d d ddddddddddddddd d d d d d!d"d#d$d%d&d'd(d)d*d+d,d-d.d/d0Zd1d2 Zd3d4 Zd5d6 Zd7S )8PlatformSpecificr 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 %& - ig5 i = c C s t ddgd }z(t| jtj| |r |d dO < n|d dM < t| jtj| W d S tyE } ztd ||d }~ww )Nir r& i iz1Failed to update ASYNC_LOW_LATENCY flag to {}: {}) arrayr r r termiosZ TIOCGSERIALZ TIOCSSERIALIOError ValueErrorformat)r r bufer 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 ZCBAUDBOTHERTCSETS2rR 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 TIOCGRS485SER_RS485_ENABLEDZloopbackSER_RS485_RX_DURING_TXZrts_level_for_txSER_RS485_RTS_ON_SENDZrts_level_for_rxSER_RS485_RTS_AFTER_SENDZdelay_before_txintZdelay_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 dZdZdZe 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. Nr r r r r( r r r r r r r $PlatformSpecific._update_break_stateN) r r r! osunamesplitZ osx_versionr r rb r r r r r r r( s r, Zbsdr1 ZfreebsdZnetbsdZopenbsdc @ s e Zd Zdd ZdS )ReturnBaudratec C s |S )Nr )r keyr r r __getitem__ s zReturnBaudrate.__getitem__N)r r r! rt r r r r rr s rr c @ s" e Zd Ze ZdZdZdd ZdS )r( rg rh c C rj rk rl r r r r r rm rn N)r r r! rr r" r r r r r r r r( s c @ s e Zd ZdS )r( N)r r r! r r r r r( s TIOCMGETiT TIOCMBISiT TIOCMBICiT TIOCMSETiT TIOCM_DTR TIOCM_RTS TIOCM_CTSrO TIOCM_CARrW TIOCM_RNG TIOCM_DSR TIOCM_CDTIOCM_RITIOCINQZFIONREADiT TIOCOUTQiT Ir i'T r i(T c @ s e Zd ZdZdd Zd7ddZdd Zed d Zd8d d Z dd Z dd Z dd Z dd Z dd Zdd Zdd Zd9d d Zd d Zd!d" Zed#d$ Zed%d& Zed'd( Zed)d* Zed+d, Zd-d. Zd:d0d1Zd:d2d3Zd4d5 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| jrtdd| _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| _| jdurt | j d| _| j durt | j d| _ | jdurt | j d| _| jdurt | 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 openZportstrO_RDWRO_NOCTTY O_NONBLOCKOSErrorerrnorT pipe_abort_read_rpipe_abort_read_wpipe_abort_write_rpipe_abort_write_w_reconfigure_portZ_dsrdtr_update_dtr_state_rtscts_update_rts_staterR EINVALZENOTTY_reset_input_bufferpiper F_SETFL BaseExceptionclose 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-dkrW| tj.O } n,| j-dkrc| tj/O } n | j-dkro| tj0O } n| j-dkr{| tj1O } nt+d | j-| j2t3j4kr| tj5 M } n"| j2t3j6kr| tj5O } n| j2t3j7kr| tj5O } nt+d | j2|tj8tj9B M }| j:t3j;kr| tj<tj=B t>B M } n_| j:t3j?kr| tj=t>B M } | tj<O } nJ| j:t3j@kr| t> M } | tj<tj=B O } n5| j:t3jAkrt>r| tj<t>B tj=B O } n | j:t3jBkr&t>r&| tj<t>B O } | tj= M } nt+d | j:ttdrN| jCrA|tjDtjEB O }n#|tjDtjEB tjFB M }n| jCr[|tjDtjEB O }n |tjDtjEB M }ttdr{| jGrt| tjHO } n | tjH M } nttdr| jGr| tjIO } n| tjI M } |dk s|dkrt+d ||| tjJ< |dk s|dkrt+d ||| tjK< |s||| | | | | g|krtL| j tjM||| | | | | g |dur| N| | jOdur| 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: {})ZECHOCTLZECHOKEIUCLCPARMRKzB{}ZB38400zInvalid baud rate: {!r}r2 r1 r0 r# zInvalid char len: {!r}z$Invalid stop bit specification: {!r}zInvalid parity: {!r}IXANYCRTSCTS CNEW_RTSCTS zInvalid vmin: {!r}Invalid vtime: {!r})Qr r Z _exclusiver ZflockZLOCK_EXZLOCK_NBrR r rT r ZLOCK_UN_inter_byte_timeoutrb rQ tcgetattrerrorZCLOCALZCREADZICANONZECHOZECHOEZECHOKZECHONLZISIGZIEXTENhasattrgetattrZOPOSTZONLCRZOCRNLZINLCRZIGNCRZICRNLZIGNBRKr r Z _baudrateAttributeErrorr" KeyErrorrY NameErrorrS ZCSIZEZ _bytesizeZCS8ZCS7ZCS6ZCS5Z _stopbitsserialZ STOPBITS_ONEZCSTOPBZSTOPBITS_ONE_POINT_FIVEZ STOPBITS_TWOZINPCKZISTRIPZ_parityZ PARITY_NONEZPARENBZPARODDCMSPARZ PARITY_EVENZ PARITY_ODDZ PARITY_MARKZ PARITY_SPACEZ_xonxoffZIXONZIXOFFr r r r VMINVTIME tcsetattrTCSANOWr Z _rs485_moder )r r r Z custom_baudvminvtime orig_attriflagoflagcflaglflagispeedospeedccflagr r r r x s zSerial._reconfigure_portc C sx | j r:| jdur5t| j d| _t| j t| j t| j t| j d\| _| _d\| _| _d| _ dS dS )z Close portNr F)r r ro r r r r r r r r r r s z Serial.closec C t | jtt}td|d S )z9Return the number of bytes currently in the input buffer.r r )r r r r TIOCM_zero_strstructunpackr sr r r in_waiting! zSerial.in_waitingr$ c C st | j st t }t| j}t||k rz6t| 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 jfvrtd|W Y d}~nd}~ww |std|| | 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 _timeoutlenselectr r time_leftro readr r EAGAINEALREADY EWOULDBLOCK EINPROGRESSEINTRr rT r extendexpiredbytes)r sizer timeoutready_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}|dkrzot| j|}|j r'|W S |j sU| r2t dt | jg| jgg | \}}} |rNt| jd W n|sTt dn(| du s]J t | jg| jgg d\}}} |rwt| jd W ny|s}td||d }||8 }W nX ty ty } z | jtjtjtjtjtjfvrtd| W Y d} ~ n.d} ~ w t jy } z | d tjtjtjtjtjfvrtd| W Y d} ~ nd} ~ ww |j s| rt 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 datadZtx_lenlengthr nabortr 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}td|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 ZTCIONZTCIOFFr 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)warningswarnDeprecationWarning)r r r r r nonblocking s zSerial.nonblockingN)Fr$ )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 ZdZdddZdS )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 |dkrt||k r||jrEdn| d D ]\}}|| j krW n|tj tj B tj B @ rftdqL|| 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 pollregisterr 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 ddZe 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 platformlowerZplatrP 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*