Auto detection of ttyUSB devices based on vendor id and product id module.

a6e17fb6 · Matthieu Cattin · 1ddf74bf · a6e17fb6
Commit a6e17fb6 authored Jan 10, 2012 by Matthieu Cattin
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find_usb_tty.py test/fmcadc100m14b4cha/python/find_usb_tty.py +41 -0

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--- a/test/fmcadc100m14b4cha/python/find_usb_tty.py
+++ b/test/fmcadc100m14b4cha/python/find_usb_tty.py
+#!   /usr/bin/env   python
+#    coding: utf8
+
+import  glob
+import  os
+import  re
+
+
+class CttyUSB:
+
+    def __init__(self):
+        pass
+
+    def find_usb_tty(self, vendor_id = None, product_id = None) :
+        tty_devs    = []
+
+        for dn in glob.glob('/sys/bus/usb/devices/*') :
+            try     :
+                vid = int(open(os.path.join(dn, "idVendor" )).read().strip(), 16)
+                pid = int(open(os.path.join(dn, "idProduct")).read().strip(), 16)
+                #print "dn:%s vid:%s pid:%s" % (dn,vid,pid)
+                if  ((vendor_id is None) or (vid == vendor_id)) and ((product_id is None) or (pid == product_id)) :
+                    dns = glob.glob(os.path.join(dn, os.path.basename(dn) + "*"))
+                    for sdn in dns :
+                        for fn in glob.glob(os.path.join(sdn, "*")) :
+                            if  re.search(r"\/ttyUSB[0-9]+$", fn) :
+                                tty_devs.append("/dev/" + os.path.basename(fn))
+                                pass
+                            pass
+                        pass
+                    pass
+            except ( ValueError, TypeError, AttributeError, OSError, IOError ) :
+                pass
+            pass
+
+        return tty_devs
+
+
+#print find_usb_tty()
+#print find_usb_tty(0x10c4,0xea60)
+#print find_usb_tty(0x0403,0x6001)