Add a Linux-specific serial port scanner that can detect EiBotBoards.

git-svn-id: https://eggbotcode.googlecode.com/svn/trunk@105 72233254-1b6c-9e9c-5072-401df62706fb

inkscape_driver/eggbot_scan.py

@@ -6,5 +6,7 @@ if platform == 'win32':
 	from eggbot_scanwin32 import *
 elif platform == 'darwin':
 	from eggbot_scanosx import *
+elif platform == 'linux2':
+	from eggbot_scanlinux import *
 else:
 	from eggbot_scanposix import *

inkscape_driver/eggbot_scanlinux.py

@@ -0,0 +1,39 @@
+import os
+
+DEV_TREE = '/dev'
+USB_DEVICE_TREE = '/sys/bus/usb/devices'
+
+def findEiBotBoards():
+	"""Find only those USB devices that declare themselves to be EiBotBoards"""
+
+	# find all USB devices whose product name is 'EiBotBoard'
+	with os.popen( 'fgrep -l EiBotBoard %s/*/product' % USB_DEVICE_TREE ) as pipe:
+		for path in [ os.path.split( path )[0] for path in pipe.readlines()]:
+			device = os.path.split( path )[1]
+
+			# for each device endpoint ...
+			for dir in os.listdir( path ):
+				if dir.startswith( device ):
+
+					# find the endpoint that supports tty access
+					ttydir = os.path.join( USB_DEVICE_TREE, device, dir, 'tty' )
+					if os.path.exists( ttydir ):
+
+						# And emit each (the) interface name
+						for ttyname in os.listdir( ttydir ):
+							yield os.path.join( DEV_TREE, ttyname )
+
+def findPorts():
+	for device in os.listdir( DEV_TREE ):
+		if not device.startswith( 'ttyACM' ):
+			continue
+		yield os.path.join( DEV_TREE , device )
+
+if __name__ == '__main__':
+	print "Looking for EiBotBoards"
+	for port in findEiBotBoards():
+		print "  ", port
+
+	print "Looking for COM ports"
+	for port in findPorts():
+		print "  ", port

inkscape_driver/eggbot_scanosx.py

@@ -4,8 +4,7 @@ def findEiBotBoards():
 	usbdata = os.popen( '/usr/sbin/system_profiler SPUSBDataType' ).read()
 	tokens = re.split( 'EiBotBoard', usbdata )
 	for t in tokens[1:]:
-		match = re.match( '.*?Location ID: 0x([0-9a-fA-F]+).*', t,
-				  re.M | re.S )
+		match = re.match( '.*?Location ID: 0x([0-9a-fA-F]+).*', t, re.M | re.S )
 		if match != None:
 			locid = int( match.group( 1 ), 16 )
 			yield '/dev/cu.usbmodem%x' % ( ( locid >> 16 ) + 1 )