-----Ruby/SerialPort-----
-- Description --
Ruby/SerialPort is a Ruby library that provides a class for using
RS-232 serial ports. This class also contains low-level functions to
check and set the current state of the signals on the line.
The native Windows version of this library supports Microsoft's Visual C++
and Borland's C++ compilers.
-- Installation --
$ ruby extconf.rb
$ make
$ make install
-- Testing --
* test/miniterm.rb
Ruby's copy of miniterm.c !
-- API --
**** Class SerialPort, Parent IO ****
** Class constants **
VERSION -> aString (this release is "0.6")
NONE, HARD, SOFT, SPACE, MARK, EVEN, ODD -> anInteger
** Class methods **
* new(port_num [, modem_parameters]) -> aSerialPort
* open(port_num [, modem_parameters]) -> aSerialPort
* open(port_num [, modem_parameters]) {|aSerialPort| block} -> nil
port_num -> anInteger: port number, 0 for first port which is
"/dev/ttyS0" on GNU/Linux and "COM1" on Windows,
or aString: file name of the device (example: "/dev/ttyS2")
Optional modem_parameters:
baudrate -> anInteger: from 50 to 256000, depends on platform.
databits -> anInteger: from 5 to 8 (4 is allowed on Windows)
stopbits -> anInteger: 1 or 2 (1.5 is not supported)
parity -> anInteger: SerialPort::NONE, SerialPort::EVEN,
SerialPort::ODD, SerialPort::MARK, SerialPort::SPACE
(MARK and SPACE are not supported on Posix)
Raise an argError on bad argument.
SerialPort.new and SerialPort.open without a block return an
instance of SerialPort. SerialPort.open with a block passes
a SerialPort to the block and closes it when the block exits
(like File.open).
** Instance methods **
* modem_params() -> aHash
* modem_params=(aHash) -> self
* get_modem_params() -> aHash
* set_modem_params(aHash) -> self
* set_modem_params(baudrate [, databits [, stopbits [, parity]]])
Get and set the modem parameters. Hash keys are "baud", "data_bits",
"stop_bits", and "parity" (see above).
Parameters not present in the hash or set to nil remain unchanged.
Default parameter values for the set_modem_params method are:
databits = 8, stopbits = 1, parity = (databits == 8 ?
SerialPort::NONE : SerialPort::EVEN).
* baud() -> anInteger
* baud=(anInteger) -> self
* data_bits() -> 4, 5, 6, 7, or 8
* data_bits=(anInteger) -> self
* stop_bits() -> 1 or 2
* stop_bits=(anInteger) -> self
* parity() -> anInteger: SerialPort::NONE, SerialPort::EVEN,
SerialPort::ODD, SerialPort::MARK, or SerialPort::SPACE
* parity=(anInteger) -> self
Get and set the corresponding modem parameter.
* flow_control() -> anInteger
* flow_control=(anInteger) -> self
Get and set the flow control: SerialPort::NONE, SerialPort::HARD,
SerialPort::SOFT, or (SerialPort::HARD | SerialPort::SOFT).
Note: SerialPort::HARD mode is not supported on all platforms.
SerialPort::HARD uses RTS/CTS handshaking; DSR/DTR is not
supported.
* read_timeout() -> anInteger
* read_timeout=(anInteger) -> self
* write_timeout() -> anInteger
* write_timeout=(anInteger) -> self
Get and set timeout values (in milliseconds) for reading and writing.
A negative read timeout will return all the available data without
waiting, a zero read timeout will not return until at least one
byte is available, and a positive read timeout returns when the
requested number of bytes is available or the interval between the
arrival of two bytes exceeds the timeout value.
Note: Read timeouts don't mix well with multi-threading.
Note: Under Posix, write timeouts are not implemented.
* break(time) -> nil
Send a break for the given time.
time -> anInteger: tenths-of-a-second for the break.
Note: Under Posix, this value is very approximate.
* signals() -> anHash
Return a hash with the state of each line status bit. Keys are
"rts", "dtr", "cts", "dsr", "dcd", and "ri".
Note: Under Windows, the rts and dtr values are not included.
* rts()
* dtr()
* cts()
* dsr()
* dcd()
* ri() -> 0 or 1
* rts=(0 or 1)
* dtr=(0 or 1) -> self
Get and set the corresponding line status bit.
Note: Under Windows, rts() and dtr() are not implemented.
-- License --
GPL
Guillaume Pierronnet <moumar@netcourrier.com>
Alan Stern <stern@rowland.harvard.edu>
145ab89354