Version 1.1.4

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

picokey/RescuePicoKey.py

@@ -17,8 +17,11 @@
  */
 """
 
+import os
 import usb.core
 import usb.util
+import libusb_package
+import usb.backend.libusb1
 from .ICCD import ICCD
 
 class RescuePicoKey:
@@ -37,7 +40,12 @@ class RescuePicoKey:
                         return True
                 return False
 
-        devs = usb.core.find(find_all=True, custom_match=find_class(0x0B))
+        backend = usb.backend.libusb1.get_backend(find_library=libusb_package.find_library)
+        try:
+            devs = usb.core.find(find_all=True, custom_match=find_class(0x0B), backend=backend)
+        except Exception as e:
+            print("RescuePicoKey: exception during usb.core.find:", e)
+            devs = []
         found = False
         for dev in devs:
             if (dev.manufacturer == 'Pol Henarejos'):
@@ -77,8 +85,15 @@ class RescuePicoKey:
         assert(self.__dev.write(self.__out, data, timeout) == len(data))
 
     def exchange(self, data, timeout=2000):
-        self.write(data=data, timeout=timeout)
-        return self.read(timeout=timeout)
+        try:
+            self.write(data=data, timeout=timeout)
+        except Exception as e:
+            raise Exception("USB write error: " + str(e))
+        try:
+            ret = self.read(timeout=timeout)
+        except Exception as e:
+            raise Exception("USB read error: " + str(e))
+        return ret
 
     def powerOn(self):
         if (not self.__active):

picokey/_version.py

@@ -18,4 +18,4 @@
  */
 """
 
-__version__ = "1.1.2"
+__version__ = "1.1.4"

setup.py

@@ -37,6 +37,8 @@ INSTALL_REQUIRES = [
     'pyusb',
     'pycvc',
     'pyscard>=2.3.1',
+    'libusb',
+    'libusb_package',
 ]
 
 if sys.platform.startswith('win32'):