1 files changed, 90 insertions, 0 deletions
diff --git a/pybluez/advanced/write-inquiry-scan.py b/pybluez/advanced/write-inquiry-scan.py
new file mode 100644
index 0000000..54793b7
--- /dev/null
+++ b/pybluez/advanced/write-inquiry-scan.py
@@ -0,0 +1,90 @@
+import os
+import sys
+import struct
+import bluetooth._bluetooth as bluez
+
+def read_inquiry_scan_activity(sock):
+    """returns the current inquiry scan interval and window, 
+    or -1 on failure"""
+    # save current filter
+    old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
+
+    # Setup socket filter to receive only events related to the
+    # read_inquiry_mode command
+    flt = bluez.hci_filter_new()
+    opcode = bluez.cmd_opcode_pack(bluez.OGF_HOST_CTL, 
+            bluez.OCF_READ_INQ_ACTIVITY)
+    bluez.hci_filter_set_ptype(flt, bluez.HCI_EVENT_PKT)
+    bluez.hci_filter_set_event(flt, bluez.EVT_CMD_COMPLETE);
+    bluez.hci_filter_set_opcode(flt, opcode)
+    sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, flt )
+
+    # first read the current inquiry mode.
+    bluez.hci_send_cmd(sock, bluez.OGF_HOST_CTL, 
+            bluez.OCF_READ_INQ_ACTIVITY )
+
+    pkt = sock.recv(255)
+
+    status,interval,window = struct.unpack("!xxxxxxBHH", pkt)
+    interval = bluez.btohs(interval)
+    interval = (interval >> 8) | ( (interval & 0xFF) << 8 )
+    window = (window >> 8) | ( (window & 0xFF) << 8 )
+    if status != 0: mode = -1
+
+    # restore old filter
+    sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, old_filter )
+    return interval, window
+
+def write_inquiry_scan_activity(sock, interval, window):
+    """returns 0 on success, -1 on failure"""
+    # save current filter
+    old_filter = sock.getsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, 14)
+
+    # Setup socket filter to receive only events related to the
+    # write_inquiry_mode command
+    flt = bluez.hci_filter_new()
+    opcode = bluez.cmd_opcode_pack(bluez.OGF_HOST_CTL, 
+            bluez.OCF_WRITE_INQ_ACTIVITY)
+    bluez.hci_filter_set_ptype(flt, bluez.HCI_EVENT_PKT)
+    bluez.hci_filter_set_event(flt, bluez.EVT_CMD_COMPLETE);
+    bluez.hci_filter_set_opcode(flt, opcode)
+    sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, flt )
+
+    # send the command!
+    bluez.hci_send_cmd(sock, bluez.OGF_HOST_CTL, 
+            bluez.OCF_WRITE_INQ_ACTIVITY, struct.pack("HH", 
+                interval, window) )
+
+    pkt = sock.recv(255)
+
+    status = struct.unpack("xxxxxxB", pkt)[0]
+
+    # restore old filter
+    sock.setsockopt( bluez.SOL_HCI, bluez.HCI_FILTER, old_filter )
+    if status != 0: return -1
+    return 0
+
+dev_id = 0
+try:
+    sock = bluez.hci_open_dev(dev_id)
+except:
+    print "error accessing bluetooth device..."
+    sys.exit(1)
+
+try:
+    interval, window = read_inquiry_scan_activity(sock)
+except Exception, e:
+    print "error reading inquiry scan activity.  "
+    print e
+    sys.exit(1)
+print "current inquiry scan interval: %d (0x%X) window: %d (0x%X)" % \
+        (interval, interval, window, window)
+
+if len(sys.argv) == 3:
+    interval = int(sys.argv[1])
+    window = int(sys.argv[2])
+    print "target interval: %d window %d" % (interval, window)
+    write_inquiry_scan_activity(sock, interval, window)
+    interval, window = read_inquiry_scan_activity(sock)
+    print "current inquiry scan interval: %d (0x%X) window: %d (0x%X)" % \
+            (interval, interval, window, window)