Module to use Mac serial port as a communication link

diff --git a/Mac/Lib/mactty.py b/Mac/Lib/mactty.py
new file mode 100644 (file)
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+++ b/Mac/Lib/mactty.py
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+#
+# 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:]