Changeset 147 for misc

Timestamp:

Jul 14, 2010, 11:23:43 PM (14 years ago)

Author:

Rick van der Zwet

Message:

Better logging & debugging

File:

• misc/serial-sniffer.py (modified) (5 diffs)

misc/serial-sniffer.py

@@ -4 +4 @@
 # sniffer (DIY schemes avaiable). 
 # HOST -> DEVICE at /dev/ttyUSB0 and DEVICE -> HOST at /dev/ttyUSB1
+# 
+# NOTE: Use Cheap USB-to-Serial devices else you might run into trouble with
+# 'smart' buffering and/or not clearing properly failing devices for example:
+# - ID 0557:2008 ATEN International Co., Ltd UC-232A Serial Port [pl2303]
 # 
 # $Id$
@@ -12 +16 @@
 import os
 import sys
+
+DEBUG = False
 
 # Stolen from http://snippets.dzone.com/posts/show/7682
@@ -41 +47 @@
    return " ".join(["%02x" % ord(x) for x in s])
 
+def perror(s):
+   sys.stderr.write("[ERROR] %s\n" % s)
+
+def pdebug(s):
+   if DEBUG:
+     sys.stderr.write("[DEBUG] %s\n" % s)
+
 def main():
   while 1:
@@ -49 +62 @@
     while send_buffer == "" or recv_buffer == "":
       if send_buffer == "":
+        pdebug("trying to read send_buffer")
         while 1:
           try:
-            with Watchdog(3):
+            with Watchdog(1):
               send_buffer += send.read(1)
           except Watchdog:
             break
       else:
-         sys.stderr.write("# send_buffer filled %s" % str_to_hex(send_buffer))
+         pdebug("send_buffer filled %s" % str_to_hex(send_buffer))
   
       if recv_buffer == "":
+        pdebug("trying to read recv_buffer")
         while 1:
           try:
@@ -66 +81 @@
             break
       else:
-         sys.stderr.write("# recv_buffer filled %s" % str_to_hex(recv_buffer))
+         pdebug("recv_buffer filled %s" % str_to_hex(recv_buffer))
   
     # Try to fetch comment if we have any