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SerialBase�SerialException�to_bytes�portNotOpenError�writeTimeoutErrorc @ s: e Z d Z i Z d d � Z d d � Z d d � Z d S)�PlatformSpecificBasec C s6 t j j d t j t j t j f � t d � � d S)Na� don't know how to number ttys on this system.
! Use an explicit path (eg /dev/ttyS1) or send this information to
! the author of this module:
sys.platform = %r
os.name = %r
serialposix.py version = %s
also add the device name of the serial port and where the
counting starts for the first serial port.
e.g. 'first serial port: /dev/ttyS0'
and with a bit luck you can get this module running...
z4no number-to-device mapping defined on this platform) �sys�stderr�write�platform�os�name�serial�VERSION�NotImplementedError)�self� port_number� r �4/usr/lib/python3/dist-packages/serial/serialposix.py�number_to_device s
z%PlatformSpecificBase.number_to_devicec C s t d � � d S)Nz9non-standard baudrates are not supported on this platform)r )r �baudrater r r �_set_special_baudrate0 s z*PlatformSpecificBase._set_special_baudratec C s t d � � d S)Nz$RS485 not supported on this platform)r )r �rs485_settingsr r r �_set_rs485_mode3 s z$PlatformSpecificBase._set_rs485_modeN)�__name__�
__module__� __qualname__�BAUDRATE_CONSTANTSr r r r r r r r s r � �linuxl *TX i+T,@i i.T i/T � � � � c > @ s� e Z d Z d d d d d d d d d d d
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i�g5 i i = i c C s d | f S)Nz /dev/ttyS%dr )r r r r r r n s z!PlatformSpecific.number_to_devicec C s� t j d d g d � } yb t j | j t | � | d t j M<| d t O<| | d <| d <t j | j t | � Wn; t k
r� } z t
d | | f � � WYd d } ~ Xn Xd S)N�ir �@ r! r/ r0 z'Failed to set custom baud rate (%s): %s) �array�fcntl�ioctl�fd�TCGETS2�termiosZCBAUD�BOTHER�TCSETS2�IOError�
ValueError)r r �buf�er r r r q s z&PlatformSpecific._set_special_baudratec C sJ t j d d g d � } y� t j | j t | � | d k r� | j rX | d t O<n | d t M<| j r� | d t O<n | d t M<| j r� | d t
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rE} z t d | f � � WYd d } ~ Xn Xd S)Nr6 r r. i� r r! z Failed to set RS485 mode: %s)r8 r9 r: r; �
TIOCGRS485Zloopback�SER_RS485_RX_DURING_TXZrts_level_for_tx�SER_RS485_RTS_ON_SENDZrts_level_for_rx�SER_RS485_RTS_AFTER_SEND�intZdelay_rts_before_sendZdelay_rts_after_send�
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r$ c C s d | f S)Nz /dev/cuad%dr )r r r r r r � s z!PlatformSpecific.number_to_devicer! �.r r. c C s2 t j d | g � } t j | j t | d � d S)Nr6 r )r8 r9 r: r; � IOSSIOSPEED)r r rB r r r r � s z&PlatformSpecific._set_special_baudrateN)
r r r r r �uname�splitZ osx_versionrH r r r r r r$ � s Znetbsdc @ s e Z d Z d d � Z d S)r$ c C s d | f S)Nz /dev/dty%02dr )r r r r r r � s z!PlatformSpecific.number_to_deviceN)r r r r r r r r r$ � s �irixc @ s e Z d Z d d � Z d S)r$ c C s d | d f S)Nz /dev/ttyf%dr r )r r r r r r � s z!PlatformSpecific.number_to_deviceN)r r r r r r r r r$ � s Zhpc @ s e Z d Z d d � Z d S)r$ c C s d | d f S)Nz /dev/tty%dp0r r )r r r r r r � s z!PlatformSpecific.number_to_deviceN)r r r r r r r r r$ � s �sunosc @ s e Z d Z d d � Z d S)r$ c C s d t d � | f S)Nz
/dev/tty%c�a)�ord)r r r r r r � s z!PlatformSpecific.number_to_deviceN)r r r r r r r r r$ � s �aixc @ s e Z d Z d d � Z d S)r$ c C s d | f S)Nz
/dev/tty%dr )r r r r r r � s z!PlatformSpecific.number_to_deviceN)r r r r r r r r r$ � s c @ s e Z d Z d S)r$ N)r r r r r r r r$ � s �TIOCMGETiT �TIOCMBISiT �TIOCMBICiT �TIOCMSETiT � TIOCM_DTR� TIOCM_RTS� TIOCM_CTS� � TIOCM_CARr7 � TIOCM_RNG� � TIOCM_DSR� �TIOCM_CD�TIOCM_RI�TIOCINQZFIONREADiT �TIOCOUTQiT �I�TIOCSBRKi'T �TIOCCBRKi(T i @c @ sQ e Z d Z d Z d d � Z d d d � Z d d � Z e d d
� � Z d d d
� Z d d � Z
d d � Z d d � Z d d � Z
d d d � Z d d � Z d d � Z d d � Z e d d � � Z e d! d" � � Z e d# d$ � � Z e d% d& � � Z e d' d( � � Z d) d* � Z d+ d, � Z d- d. d/ � Z d- d0 d1 � Z d2 S)3�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.
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Xd | _ | j s | j � | j s/| j � | j � d S)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 %s: %s� force_updateT)Z_portr �is_openr; r �openZportstr�O_RDWR�O_NOCTTY�
O_NONBLOCK�OSError�errno�_reconfigure_port�closeZ_dsrdtr�_update_dtr_state�_rtscts�_update_rts_state�reset_input_buffer)r �msgr r r rl s2 - 2
z Serial.openFc , C s� | j d k r t d � � d } d } } | j d k rS d } t | j d � } y1 t j | j � } | \ } } } } }
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| | g | k r�t jA | j t jB | | | | |
| | g � | d k r�| jC | � | jD d k r�| jE | jD � d S) z,Set communication parameters on opened port.Nz+Can only operate on a valid file descriptorr r r0 z Could not configure port: %s�ECHOCTL�ECHOKE�IUCLC�PARMRKzB%sZB38400zInvalid baud rate: %rr. r- r, r zInvalid char len: %rz"Invalid stop bit specification: %rr zInvalid parity: %r�IXANY�CRTSCTS� CNEW_RTSCTS� zInvalid vmin: %r zInvalid vtime: %r)ry rz )Fr; r �_inter_byte_timeoutrH r= � tcgetattr�errorZCLOCALZCREADZICANONZECHOZECHOEZECHOKZECHONLZISIGZIEXTEN�hasattr�getattrZOPOSTZONLCRZOCRNLZINLCRZIGNCRZICRNLZIGNBRKr{ r| Z _baudrate�AttributeErrorr �KeyErrorrA ZCSIZEZ _bytesizeZCS8ZCS7ZCS6ZCS5Z _stopbitsr � STOPBITS_ONEZCSTOPBZSTOPBITS_ONE_POINT_FIVEZ STOPBITS_TWOZINPCKZISTRIPZ_parityZ PARITY_NONEZPARENBZPARODD� PARITY_EVENZ
PARITY_ODDZ PARITY_MARK�plat�CMSPARZ PARITY_SPACEZ_xonxoffZIXONZIXOFFr} ru r~ r �VMIN�VTIME� tcsetattr�TCSANOWr Z _rs485_moder )r rj Z custom_baud�vmin�vtime� orig_attr�iflag�oflag�cflag�lflag�ispeed�ospeed�ccrx Zflagr r r rr < s�
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zSerial._reconfigure_portc C s> | j r: | j d k r1 t j | j � d | _ d | _ d S)z
Close portNF)rk r; r rs )r r r r rs � s
z Serial.closec C s, t j | j t t � } t j d | � d S)z9Return the number of bytes currently in the input buffer.rf r )r9 r: r; rd �TIOCM_zero_str�struct�unpack)r �sr r r �
in_waiting� s zSerial.in_waitingr c C s� | j s t � t � } | j } xYt | � | k r|y� t j � } t j | j g g g | � \ } } } | ss Pt j | j | t | � � } | s� t
d � � | j | � | d k r� | t j � | 8} | d k r� PWq$ t k
r+} z* | j
t
j k rt
d | f � � WYd d } ~ Xq$ t j k
rx} z+ | d t
j k rft
d | f � � WYd d } ~ Xq$ Xq$ Wt | � 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.
zgdevice reports readiness to read but returned no data (device disconnected or multiple access on port?)Nr zread failed: %s)rk r � bytearray�_timeout�len�time�selectr; r �readr �extendrp rq �EAGAINr� �bytes) r �sizer� �timeoutZ
start_time�ready�_rB rC r r r r� � s2 '
%*z Serial.readc
C s� | j s t � t | � } t | � } | j d k r[ | j d k r[ t j � | j } n d } x]| d k r�y� t j | j | � } | r� | t j � } | d k r� t � t
j
g | j g g | � \ } } } | s t � n9 t
j
g | j g g d � \ } } } | s t d � � | | d � } | | 8} Wqd t k
rQ� Yqd t k
r�} zL | j
t
j k r�t d | f � � | r�| t j � d k r�t � WYd d } ~ Xqd Xqd Wt | � S)z2Output the given byte string over the serial port.Nr zwrite failed (select)zwrite failed: %s)rk r r r� Z_write_timeoutr� r r
r; r r� r rp rq r� )
r �data�dZtx_lenr� �nZtimeleftr� r� �vr r r r
s< ' '
z Serial.writec C s# | j s t � t j | j � d S)zb Flush of file like objects. In this case, wait until all data
is written.
N)rk r r= Ztcdrainr; )r r r r �flush) s z Serial.flushc C s) | j s t � t j | j t j � d S)z9Clear input buffer, discarding all that is in the buffer.N)rk r r= �tcflushr; ZTCIFLUSH)r r r r rw 2 s zSerial.reset_input_bufferc C s) | j s t � t j | j t j � d S)zs Clear output buffer, aborting the current output and discarding all
that is in the buffer.
N)rk r r= r� r; ZTCOFLUSH)r r r r �reset_output_buffer8 s zSerial.reset_output_bufferg �?c C s0 | j s t � t j | j t | d � � d S)za Send break condition. Timed, returns to idle state after given
duration.
g �?N)rk r r= Z tcsendbreakr; rH )r Zdurationr r r �
send_breakA s zSerial.send_breakc C s6 | j r t j | j t � n t j | j t � d S)zS Set break: Controls TXD. When active, no transmitting is possible.
N)Z _break_stater9 r: r; rg rh )r r r r �_update_break_stateJ s zSerial._update_break_statec C s< | j r" t j | j t t � n t j | j t t � d S)z)Set terminal status line: Request To SendN)Z
_rts_stater9 r: r; rV �
TIOCM_RTS_strrW )r r r r rv S s zSerial._update_rts_statec C s< | j r" t j | j t t � n t j | j t t � d S)z-Set terminal status line: Data Terminal ReadyN)Z
_dtr_stater9 r: r; rV �
TIOCM_DTR_strrW )r r r r rt Z s zSerial._update_dtr_statec C sE | j s t � t j | j t t � } t j d | � d t @d k S)z(Read terminal status line: Clear To Sendrf r )
rk r r9 r: r; rU r� r� r� r[ )r r� r r r �ctsa s z
Serial.ctsc C sE | j s t � t j | j t t � } t j d | � d t @d k S)z)Read terminal status line: Data Set Readyrf r )
rk r r9 r: r; rU r� r� r� r` )r r� r r r �dsri s z
Serial.dsrc C sE | j s t � t j | j t t � } t j d | � d t @d k S)z)Read terminal status line: Ring Indicatorrf r )
rk r r9 r: r; rU r� r� r� rc )r r� r r r �riq s z Serial.ric C sE | j s t � t j | j t t � } t j d | � d t @d k S)z)Read terminal status line: Carrier Detectrf r )
rk r r9 r: r; rU r� r� r� rb )r r� r r r �cdy s z Serial.cdc C s, t j | j t t � } t j d | � d S)z:Return the number of bytes currently in the output buffer.rf r )r9 r: r; re r� r� r� )r r� r r r � out_waiting� s zSerial.out_waitingc C s/ | j s t � t j | j t j t j � d S)zinternal - not portable!N)rk r r9 r; �F_SETFLr ro )r r r r � nonblocking� s zSerial.nonblockingc C s | j s t � | j S)z� For easier use of the serial port instance with select.
WARNING: this function is not portable to different platforms!
)rk r r; )r r r r �fileno� s z
Serial.filenoTc C sH | j s t � | r. t j | j t j � n t j | j t j � d S)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)rk r r= �tcflowr; ZTCIONZTCIOFF)r �enabler r r �set_input_flow_control� s
z Serial.set_input_flow_controlc C sH | j s t � | r. t j | j t j � n t j | j t j � d S)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)rk r r= r� r; ZTCOONZTCOOFF)r r� r r r �set_output_flow_control� s
z Serial.set_output_flow_controlN)r r r �__doc__rl rr rs �propertyr� r� r
r� rw r� r� r� rv rt r� r� r� r� r� r� r� r� r� r r r r ri s. $�
. '
ri c @ s% e Z d Z d Z d d d � Z d S)�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 sB | j d k r t � t � } t j � } | j | j t j t j Bt j Bt j B� | d k r8x� t
| � | k r7xK | j | j d � D]3 \ } } | t j t j Bt j B@r� t d � � q� Wt
j | j | t
| � � } | j | � | j d k r| j d k s,| j d k rd | j d k rd | rd Pqd Wt | � 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.
Nr i� zdevice reports error (poll))r; r r� r� �poll�registerZPOLLINZPOLLERRZPOLLHUPZPOLLNVALr� r� r r r� r� r� r� )r r� r� r� r; ZeventrB r r r r� � s + #
%zPosixPollSerial.readN)r r r r� r� r r r r r� � s r� c s: e Z d Z d Z d � f d d � Z d d d � Z � S)� 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
sS t t | � j � t j | j t j d � | j d k rW d } t | j d � } n d } t | j d � } y1 t j
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d | � � WYd d } ~ Xn X| d k s� | d k rt d | � � | | t j <| | t j <t j | j t j | | | | | |
| g � d S)z,Set communication parameters on opened port.r Nr r0 z Could not configure port: %sr� zInvalid vtime: %r)�superr� rr r9 r; r� r� rH r� r= r� r� r r rA r� r� r� r� )
r rj r� r� r� r� r� r� r� r� r� r� rx )� __class__r r rr � s( &
z VTIMESerial._reconfigure_portr c C sn | j s t � t � } xI t | � | k rc t j | j | t | � � } | sS P| j | � q Wt | � 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.
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