PySerial — различия между версиями
Vooon (обсуждение | вклад) |
Vooon (обсуждение | вклад) |
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Строка 17: | Строка 17: | ||
=== miniterm.py === | === miniterm.py === | ||
код: | код: | ||
− | <code python | + | <code>[python,1] |
− | + | #!/usr/bin/env python | |
− | + | # -*- coding: utf-8 -*- | |
− | + | # Very simple serial terminal | |
− | + | # (C)2002-2004 Chris Liechti <cliecht@gmx.net> | |
+ | |||
+ | # Input characters are sent directly (only LF -> CR/LF/CRLF translation is | ||
+ | # done), received characters are displayed as is (or as trough pythons | ||
+ | # repr, useful for debug purposes) | ||
+ | # Baudrate and echo configuartion is done through globals | ||
+ | |||
− | + | import sys, os, serial, threading, getopt | |
− | |||
− | |||
− | |||
+ | EXITCHARCTER = '\x04' #ctrl+D | ||
− | + | #first choose a platform dependant way to read single characters from the console | |
− | + | if os.name == 'nt': | |
− | |||
− | |||
− | |||
− | |||
import msvcrt | import msvcrt | ||
def getkey(): | def getkey(): | ||
Строка 48: | Строка 48: | ||
return '\n' | return '\n' | ||
return z | return z | ||
− | + | ||
− | + | elif os.name == 'posix': | |
import termios, sys, os | import termios, sys, os | ||
fd = sys.stdin.fileno() | fd = sys.stdin.fileno() | ||
Строка 67: | Строка 67: | ||
termios.tcsetattr(fd, termios.TCSAFLUSH, old) | termios.tcsetattr(fd, termios.TCSAFLUSH, old) | ||
sys.exitfunc = clenaup_console #terminal modes have to be restored on exit... | sys.exitfunc = clenaup_console #terminal modes have to be restored on exit... | ||
− | + | ||
− | + | else: | |
raise "Sorry no implementation for your platform (%s) available." % sys.platform | raise "Sorry no implementation for your platform (%s) available." % sys.platform | ||
− | + | ||
− | + | CONVERT_CRLF = 2 | |
− | + | CONVERT_CR = 1 | |
− | + | CONVERT_LF = 0 | |
− | + | ||
− | + | def reader(): | |
"""loop forever and copy serial->console""" | """loop forever and copy serial->console""" | ||
while 1: | while 1: | ||
Строка 84: | Строка 84: | ||
sys.stdout.write(data) | sys.stdout.write(data) | ||
sys.stdout.flush() | sys.stdout.flush() | ||
− | + | ||
− | + | def writer(): | |
"""loop and copy console->serial until EOF character is found""" | """loop and copy console->serial until EOF character is found""" | ||
while 1: | while 1: | ||
Строка 100: | Строка 100: | ||
else: | else: | ||
s.write(c) #send character | s.write(c) #send character | ||
− | + | ||
− | + | ||
− | + | print a short help message | |
− | + | def usage(): | |
sys.stderr.write("""USAGE: %s [options] | sys.stderr.write("""USAGE: %s [options] | ||
Miniterm - A simple terminal program for the serial port. | Miniterm - A simple terminal program for the serial port. | ||
− | + | ||
options: | options: | ||
-p, --port=PORT: port, a number, default = 0 or a device name | -p, --port=PORT: port, a number, default = 0 or a device name | ||
Строка 116: | Строка 116: | ||
-n, --newline: do not send CR+LF, send LF only | -n, --newline: do not send CR+LF, send LF only | ||
-D, --debug: debug received data (escape nonprintable chars) | -D, --debug: debug received data (escape nonprintable chars) | ||
− | + | ||
""" % (sys.argv[0], )) | """ % (sys.argv[0], )) | ||
− | + | ||
− | + | if __name__ == '__main__': | |
#initialize with defaults | #initialize with defaults | ||
port = 0 | port = 0 | ||
Строка 167: | Строка 167: | ||
elif o in ("-D", "--debug"): | elif o in ("-D", "--debug"): | ||
repr_mode = 1 | repr_mode = 1 | ||
− | + | ||
#open the port | #open the port | ||
try: | try: | ||
Строка 181: | Строка 181: | ||
#and enter console->serial loop | #and enter console->serial loop | ||
writer() | writer() | ||
− | + | ||
sys.stderr.write("\n--- exit ---\n") | sys.stderr.write("\n--- exit ---\n") | ||
</code> | </code> | ||
Результат работы: | Результат работы: | ||
− | <code shell | + | <code>[shell,N] |
vovan@ubuntu-vooon:~/scripts/python/com-wake/pyserial-2.2/examples$ python ./miniterm.py -Den -p 0 -b 115200 | vovan@ubuntu-vooon:~/scripts/python/com-wake/pyserial-2.2/examples$ python ./miniterm.py -Den -p 0 -b 115200 | ||
--- Miniterm --- type Ctrl-D to quit | --- Miniterm --- type Ctrl-D to quit |
Версия 06:05, 1 июля 2007
Опишу что потребуется для создания гипертерминала на питоне
Что потребуется?
PyGTK это обертка над GTK поэтому нужны обе библиотеки они реализуют GUI
PySerial - библиотека работы с ком портом, работает как под Windows так и под POSIX системами
PySerial - examples
Во всех примерах линии RxD и TxD соединены.
miniterm.py
код:
[python,1]
- !/usr/bin/env python
- -*- coding: utf-8 -*-
- Very simple serial terminal
- (C)2002-2004 Chris Liechti <cliecht@gmx.net>
- Input characters are sent directly (only LF -> CR/LF/CRLF translation is
- done), received characters are displayed as is (or as trough pythons
- repr, useful for debug purposes)
- Baudrate and echo configuartion is done through globals
import sys, os, serial, threading, getopt
EXITCHARCTER = '\x04' #ctrl+D
- first choose a platform dependant way to read single characters from the console
if os.name == 'nt':
import msvcrt
def getkey():
while 1:
if echo:
z = msvcrt.getche()
else:
z = msvcrt.getch()
if z == '\0' or z == '\xe0': #functions keys
msvcrt.getch()
else:
if z == '\r':
return '\n'
return z
elif os.name == 'posix':
import termios, sys, os
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ICANON & ~termios.ECHO
new[6][termios.VMIN] = 1
new[6][termios.VTIME] = 0
termios.tcsetattr(fd, termios.TCSANOW, new)
s = # We'll save the characters typed and add them to the pool.
def getkey():
c = os.read(fd, 1)
#~ c = sys.stdin.read(1)
if echo: sys.stdout.write(c); sys.stdout.flush()
return c
def clenaup_console():
termios.tcsetattr(fd, termios.TCSAFLUSH, old)
sys.exitfunc = clenaup_console #terminal modes have to be restored on exit...
else:
raise "Sorry no implementation for your platform (%s) available." % sys.platform
CONVERT_CRLF = 2
CONVERT_CR = 1
CONVERT_LF = 0
def reader():
"""loop forever and copy serial->console"""
while 1:
data = s.read()
if repr_mode:
sys.stdout.write(repr(data)[1:-1])
else:
sys.stdout.write(data)
sys.stdout.flush()
def writer():
"""loop and copy console->serial until EOF character is found"""
while 1:
c = getkey()
if c == EXITCHARCTER:
break #exit app
elif c == '\n':
if convert_outgoing == CONVERT_CRLF:
s.write('\r\n') #make it a CR+LF
elif convert_outgoing == CONVERT_CR:
s.write('\r') #make it a CR
elif convert_outgoing == CONVERT_LF:
s.write('\n') #make it a LF
else:
s.write(c) #send character
print a short help message
def usage():
sys.stderr.write("""USAGE: %s [options]
Miniterm - A simple terminal program for the serial port.
options:
-p, --port=PORT: port, a number, default = 0 or a device name
-b, --baud=BAUD: baudrate, default 9600
-r, --rtscts: enable RTS/CTS flow control (default off)
-x, --xonxoff: enable software flow control (default off)
-e, --echo: enable local echo (default off)
-c, --cr: do not send CR+LF, send CR only
-n, --newline: do not send CR+LF, send LF only
-D, --debug: debug received data (escape nonprintable chars)
""" % (sys.argv[0], ))
if __name__ == '__main__':
#initialize with defaults
port = 0
baudrate = 9600
echo = 0
convert_outgoing = CONVERT_CRLF
rtscts = 0
xonxoff = 0
repr_mode = 0
#parse command line options
try:
opts, args = getopt.getopt(sys.argv[1:],
"hp:b:rxecnD",
["help", "port=", "baud=", "rtscts", "xonxoff", "echo",
"cr", "newline", "debug"]
)
except getopt.GetoptError:
# print help information and exit:
usage()
sys.exit(2)
for o, a in opts:
if o in ("-h", "--help"): #help text
usage()
sys.exit()
elif o in ("-p", "--port"): #specified port
try:
port = int(a)
except ValueError:
port = a
elif o in ("-b", "--baud"): #specified baudrate
try:
baudrate = int(a)
except ValueError:
raise ValueError, "Baudrate must be a integer number, not %r" % a
elif o in ("-r", "--rtscts"):
rtscts = 1
elif o in ("-x", "--xonxoff"):
xonxoff = 1
elif o in ("-e", "--echo"):
echo = 1
elif o in ("-c", "--cr"):
convert_outgoing = CONVERT_CR
elif o in ("-n", "--newline"):
convert_outgoing = CONVERT_LF
elif o in ("-D", "--debug"):
repr_mode = 1
#open the port
try:
s = serial.Serial(port, baudrate, rtscts=rtscts, xonxoff=xonxoff)
except:
sys.stderr.write("Could not open port\n")
sys.exit(1)
sys.stderr.write("--- Miniterm --- type Ctrl-D to quit\n")
#start serial->console thread
r = threading.Thread(target=reader)
r.setDaemon(1)
r.start()
#and enter console->serial loop
writer()
sys.stderr.write("\n--- exit ---\n")
Результат работы:
[shell,N]
vovan@ubuntu-vooon:~/scripts/python/com-wake/pyserial-2.2/examples$ python ./miniterm.py -Den -p 0 -b 115200
--- Miniterm --- type Ctrl-D to quit
hheelllloo wwoorrlldd!!
\n
--- exit ---
wxTerminal.py
Пример терминала с графическим интерфейсом требует библиотеки xWdigets и wxPython