From 3aaf3349a4328f4cca2b70c3edd41454eb5dafe6 Mon Sep 17 00:00:00 2001
From: Reiner Herrmann <reiner@reiner-h.de>
Date: Fri, 30 Mar 2012 22:00:24 +0200
Subject: umtsmodem: enable continuous logging of cells

---
 umtsmodem.py | 35 +++++++++++++++++++++++++----------
 1 file changed, 25 insertions(+), 10 deletions(-)

diff --git a/umtsmodem.py b/umtsmodem.py
index b700584..a5f20cc 100755
--- a/umtsmodem.py
+++ b/umtsmodem.py
@@ -100,7 +100,6 @@ def cell_info(modem):
 	retry = False
 	response = send_command(modem, 'AT*EGNCI\r', None)
 	if 'ERROR\r\n' in response:
-	    print "error"
 	    retry = True
 	    time.sleep(1)
 	    continue
@@ -118,13 +117,9 @@ def cell_info(modem):
 		    cells.add((mcc, mnc, lac, cid))
 		except:
 		    retry = True
-		    print "retrying"
 		    time.sleep(2)
 		    break
-    
-    for (mcc, mnc, lac, cid) in cells:
-	print "MCC: " + str(mcc) + ",  MNC: " + str(mnc) + ",  LAC: " + str(lac) + ",  CellID: " + str(cid)
-
+    return cells
 
 #    # get UMTS cell information
 #    send_command(modem, 'AT+CFUN=6\r', None)
@@ -133,13 +128,28 @@ def cell_info(modem):
 #    for line in response:
 #	if line.startswith('*EWNCI: '):
 #	    print line.rstrip()
-
 #    # switch back to default mode
 #    send_command(modem, 'AT+CFUN=1\r', None)
 
 
+def log_cells(modem):
+    cells = set()
+    while True:
+	try:
+	    current_cells = cell_info(modem)
+	    for cell in current_cells:
+		if cell not in cells:
+		    (mcc, mnc, lac, cid)  = cell
+		    print "MCC: " + str(mcc) + ",  MNC: " + str(mnc) + ",  LAC: " + str(lac) + ",  CellID: " + str(cid)
+	    cells.update(current_cells)
+	    time.sleep(2)
+	    print "foo"
+	except KeyboardInterrupt:
+	    break
+
+
 def print_state(modem):
-    modem.timeout = 0.1
+    modem.timeout = 0.3
     modem.write('AT+CSQ\r')
     response = modem.readlines()
     for line in response:
@@ -202,6 +212,7 @@ def show_usage():
     print "\tdisconnect:   disconnect from internet"
     print "\tstate:        show signal/base station info"
     print "\tcellinfo:     show info about all received cells"
+    print "\tlogcells:     continuous output of newly received cells"
 
 if len(sys.argv) != 2:
     show_usage()
@@ -223,8 +234,12 @@ elif sys.argv[1] == "disconnect":
 elif sys.argv[1] == "state":
     print_state(modem)
 elif sys.argv[1] == "cellinfo":
-#    start_modem(modem)
-    cell_info(modem)
+    cells = cell_info(modem)
+    for (mcc, mnc, lac, cid) in cells:
+	print "MCC: " + str(mcc) + ",  MNC: " + str(mnc) + ",  LAC: " + str(lac) + ",  CellID: " + str(cid)
+elif sys.argv[1] == "logcells":
+    log_cells(modem)
+
 else:
     show_usage()
 
-- 
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