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[/] [openmsp430/] [trunk/] [fpga/] [xilinx_diligent_s3board/] [software/] [ta_uart/] [miniterm.py] - Blame information for rev 202

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1 2 olivier.gi
#!/usr/bin/env python
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#very simple serial terminal
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#http://pyserial.sf.net package required
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#input characters are sent directly, received characters are displays as is
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#baudrate and echo configuartion is done through globals:
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#<cliechti@gmx.net>
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import sys, os, serial, threading, getopt
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#EXITCHARCTER = '\x1b'   #ESC
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EXITCHARCTER = '\x04'   #ctrl+d
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#first choosea platform dependant way to read single characters from the console
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if os.name == 'nt': #sys.platform == 'win32':
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    import msvcrt
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    def getkey():
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        while 1:
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            if echo:
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                z = msvcrt.getche()
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            else:
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                z = msvcrt.getch()
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            if z == '\0' or z == '\xe0':    #functions keys
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                msvcrt.getch()
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            else:
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                return z
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elif os.name == 'posix':
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    #XXX: Untested code derrived from the Python FAQ....
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#    import termios, TERMIOS, sys, os
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    import termios, sys, os
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    fd = sys.stdin.fileno()
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    old = termios.tcgetattr(fd)
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    new = termios.tcgetattr(fd)
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    new[3] = new[3] & ~TERMIOS.ICANON & ~TERMIOS.ECHO
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    new[6][TERMIOS.VMIN] = 1
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    new[6][TERMIOS.VTIME] = 0
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    termios.tcsetattr(fd, TERMIOS.TCSANOW, new)
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    s = ''    # We'll save the characters typed and add them to the pool.
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    def getkey():
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        c = os.read(fd, 1)
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        if echo: sys.stdout.write(c)
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        return c
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    def clenaup_console():
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        termios.tcsetattr(fd, TERMIOS.TCSAFLUSH, old)
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    sys.exitfunc = clenaup_console  #terminal modes have to be restored on exit...
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else:
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    raise "Sorry no implementation for your platform (%s) available." % sys.platform
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def reader():
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    """loop forever and copy serial->console"""
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    while 1:
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        sys.stdout.write(s.read())
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def writer():
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    """loop forever and copy console->serial"""
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    while 1:
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        c = getkey()
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        if c == EXITCHARCTER: break   #exit on esc
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        s.write(c)              #send character
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        if convert_outgoing_cr and c == '\r':
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            s.write('\n')
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            if echo: sys.stdout.write('\n')
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#print a short help message
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def usage():
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    print >>sys.stderr, """USAGE: %s [options]
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    Simple Terminal Programm for the serial port.
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    options:
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    -p, --port=PORT: port, a number, defualt = 0 or a device name
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    -b, --baud=BAUD: baudrate, default 9600
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    -r, --rtscts:    enable RTS/CTS flow control (default off)
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    -x, --xonxoff:   enable software flow control (default off)
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    -e, --echo:      enable local echo (default off)
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    -c, --cr:        disable CR -> CR+LF translation
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    """ % sys.argv[0]
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if __name__ == '__main__':
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    #parse command line options
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    try:
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        opts, args = getopt.getopt(sys.argv[1:],
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                "hp:b:rxec",
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                ["help", "port=", "baud=", "rtscts", "xonxoff", "echo", "cr"])
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    except getopt.GetoptError:
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        # print help information and exit:
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        usage()
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        sys.exit(2)
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    port  = 0
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    baudrate = 9600
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    echo = 0
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    convert_outgoing_cr = 1
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    rtscts = 0
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    xonxoff = 0
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    for o, a in opts:
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        if o in ("-h", "--help"):   #help text
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            usage()
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            sys.exit()
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        elif o in ("-p", "--port"):   #specified port
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            try:
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                port = int(a)
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            except ValueError:
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                port = a
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        elif o in ("-b", "--baud"):   #specified baudrate
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            try:
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                baudrate = int(a)
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            except ValueError:
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                raise ValueError, "Baudrate must be a integer number"
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        elif o in ("-r", "--rtscts"):
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            rtscts = 1
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        elif o in ("-x", "--xonxoff"):
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            xonxoff = 1
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        elif o in ("-e", "--echo"):
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            echo = 1
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        elif o in ("-c", "--cr"):
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            convert_outgoing_cr = 0
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    try:
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        s = serial.Serial(port, baudrate, rtscts=rtscts, xonxoff=xonxoff)
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    except:
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        print "could not open port"
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        sys.exit(1)
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    print "--- Miniterm --- type Ctrl-D to quit"
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    #start serial->console thread
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    r = threading.Thread(target=reader)
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    r.setDaemon(1)
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    r.start()
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    #enter console->serial loop
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    writer()
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    print "\n--- exit ---"

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