Rename all the things

[monosys] / hacks / usb-reset

diff --git a/hacks/usb-reset b/hacks/usb-reset
new file mode 100755 (executable)
index 0000000..22dab0a
--- /dev/null
+++ b/hacks/usb-reset
@@ -0,0 +1,45 @@
+#!/usr/bin/env python2
+
+import fcntl
+import os
+import subprocess
+import sys
+import time
+
+if not sys.platform.startswith("linux"):
+    print >>sys.stderr, "Sorry, this tool requires Linux"
+    sys.exit(1)
+
+try:
+    search_usb_id = sys.argv[1].lower()
+except IndexError:
+    print >>sys.stderr, "Usage: %s vendorid:devid" % sys.argv[0]
+    print >>sys.stderr, "\nThis tool will reset all USB devices with the given ID (eg 1f4d:a803)"
+    sys.exit(1)
+
+
+USBDEVFS_RESET = 21780
+
+os.umask(0007)
+
+p = subprocess.Popen(["lsusb"], stdout=subprocess.PIPE)
+for line in p.stdout:
+    line = line.split()
+    usb_id = line[5].lower()
+    if usb_id != search_usb_id:
+        continue
+    bus = line[1]
+    dev = line[3].replace(":", "")
+
+    filename = "/dev/bus/usb/%s/%s" % (bus, dev)
+    print "Resetting", filename, "...",
+    sys.stdout.flush()
+    fd = os.open(filename, os.O_WRONLY)
+    ret = fcntl.ioctl(fd, USBDEVFS_RESET, 0)
+    if ret < 0:
+        print >>sys.stderr, "\nError in ioctl:", ret
+        sys.exit(1)
+    os.close(fd)
+    time.sleep(1)
+    print "done"
+