python sniffer host side

usb_application/sniffer.py

@@ -0,0 +1,63 @@
+#!/usr/bin/env python3 
+
+import usb.core
+import usb.util
+import sys
+
+
+def find_dev():
+    dev = usb.core.find(idVendor=0x03eb, idProduct=0x6004)
+    if dev is None:
+        raise ValueError("Device not found")
+    else:
+        print("Found device")
+    return dev
+
+def find_eps(dev):
+    dev.set_configuration()
+
+    cfg = dev.get_active_configuration()
+    print("Active config: ")
+    print(cfg)
+    intf = cfg[(0,0)]
+
+    ep_in = usb.util.find_descriptor(
+        intf, 
+        custom_match = \
+        lambda e: \
+            usb.util.endpoint_direction(e.bEndpointAddress) == \
+            usb.util.ENDPOINT_IN)
+
+    assert ep_in is not None
+
+    ep_out = usb.util.find_descriptor(
+        intf, 
+        custom_match = \
+        lambda e: \
+            usb.util.endpoint_direction(e.bEndpointAddress) == \
+            usb.util.ENDPOINT_OUT)
+
+    assert ep_out is not None
+    print("****")
+    print(ep_in)
+    print(ep_out)
+    return (ep_in, ep_out)
+
+# main code
+def main():
+    dev = find_dev()
+#    (epi, epo) = find_eps(dev)
+
+    while True:
+        #ep_out.write("Hello")
+        try:
+            ans = dev.read(0x82, 64, 1000)
+            print("".join("%02x " % b for b in ans))
+        except KeyboardInterrupt:
+            print("Bye")
+            sys.exit()
+        except: 
+            print("Timeout")
+    #    print(ep_in.read(1, 5000));
+
+main()