mirror of
https://github.com/python/cpython.git
synced 2025-10-31 10:26:02 +00:00
74 lines
2 KiB
Python
74 lines
2 KiB
Python
#
|
|
# mactty module - Use a terminal line as communications channel.
|
|
#
|
|
# Note that this module is not very complete or well-designed, but it
|
|
# will have to serve until I have time to write something better. A unix
|
|
# module with the same API is available too, contact me (jack@cwi.nl)
|
|
# if you need it.
|
|
#
|
|
# Usage:
|
|
# t = Tty(toolname)
|
|
# t.raw() Set in raw/no-echo mode
|
|
# t.baudrate(rate) Set baud rate
|
|
# t.reset() Back to normal
|
|
# t.read(len) Read up to 'len' bytes (but often reads less)
|
|
# t.readall(len) Read 'len' bytes
|
|
# t.timedread(len,tout) Read upto 'len' bytes, or until 'tout' seconds idle
|
|
# t.getmode() Get parameters as a string
|
|
# t.setmode(args) Set parameters
|
|
#
|
|
# Jack Jansen, CWI, January 1997
|
|
#
|
|
import ctb
|
|
DEBUG=1
|
|
|
|
class Tty:
|
|
def __init__(self, name=None):
|
|
self.connection = ctb.CMNew('Serial Tool', (10000, 10000, 0, 0, 0, 0))
|
|
#self.orig_data = self.connection.GetConfig()
|
|
#if name:
|
|
# self.connection.SetConfig(self.orig_data + ' Port "%s"'%name)
|
|
self.connection.Open(10)
|
|
sizes, status = self.connection.Status()
|
|
|
|
def getmode(self):
|
|
return self.connection.GetConfig()
|
|
|
|
def setmode(self, mode):
|
|
length = self.connection.SetConfig(mode)
|
|
if length != 0 and length != len(mode):
|
|
raise 'SetConfig Error', (mode[:length], mode[length:])
|
|
|
|
def raw(self):
|
|
pass
|
|
|
|
def baudrate(self, rate):
|
|
self.setmode(self.getmode()+' baud %d'%rate)
|
|
|
|
def reset(self):
|
|
self.setmode(self.orig_data)
|
|
|
|
def readall(self, length):
|
|
data = ''
|
|
while len(data) < length:
|
|
data = data + self.read(length-len(data))
|
|
return data
|
|
|
|
def timedread(self,length, timeout):
|
|
self.connection.Idle()
|
|
data, eom = self.connection.Read(length, ctb.cmData, timeout*10)
|
|
if DEBUG:
|
|
print 'Timedread(%d, %d)->%s'%(length, timeout, `data`)
|
|
return data
|
|
|
|
def read(self, length):
|
|
return self.timedread(length, 0x3fffffff)
|
|
|
|
def write(self, data):
|
|
if DEBUG:
|
|
print 'Write(%s)'%`data`
|
|
while data:
|
|
self.connection.Idle()
|
|
done = self.connection.Write(data, ctb.cmData, 0x3fffffff, 0)
|
|
self.connection.Idle()
|
|
data = data[done:]
|