Hi,

every now and then I've noticed how my DS2480B-based adapter on my lab 
network seems to stop responding. Restarting OWFS has always solved the 
issue for the moment.
TLDR: Shouldn't DS2480_big_configuration be called on comm failure?

Longer version:
---
The reset & Presence command works fine, but when it tries to send data 
to the network it fails:

   DEBUG: ow_select.c:(70) Selecting a path (and device) path=/uncached 
SN=00 00 00 00 00 00 00 00 last path=00 00 00 00 00 00 00 00
   DEBUG: ow_select.c:(84) Continuing root branch
TRAFFIC OUT <write> bus=0 (/dev/cua-labdesk)
--000: E3 C5
TRAFFIC IN  <NETREAD> bus=0 (/dev/cua-labdesk)
--000: E5
TRAFFIC OUT <write> bus=0 (/dev/cua-labdesk)
--000: E1 F0
TRAFFIC IN  <NETREAD> bus=0 (/dev/cua-labdesk)
--000: E5
   DEBUG: ow_tcp_read.c:(113) read: 1 - 0 = 1
   DEBUG: ow_bus_data.c:(38) Response doesn't match data sent


After some digging I've realized that it for some reason looses its 
configuration. Exiting OWFS and manually reading out the config 
registers gives me:

Written => Received
E3 => (nothing) ( go data mode)
C5 => CD (device present)
03 => 00 (read PDSRC; 15V/μs)
05 => 08 ( read PPD, 512μs)
07 => 08 ( read SPUD; 524mS)
09 => 00 ( read W1LT, 8μs)
0B => 00 (Read DSO/W0RT: 3μs)
0F => 00 (read RBR, 9.6kbps)
0D => 08 (read LOAD?, 3.0mA)

This is identical to the power-up configuration, and apparently does not 
work on my lab network. Most likely due to the 3μs DSO, which OWFS 
configures to 8μs on startup. Since my lab net is currently loaded with 
~300m of cable to the farthest slave, this is probably just too little 
delay.

The actual config-param-reset can be reproduced by just removing the 
power from the device. Why it actually reset I don't really know, if it 
is due to bad power, or something else..
---

The issue I'd like to address here is that OWFS does not seem to call 
DS2480_big_configuration to try to re-initialize the device, when it has 
repeatedly failed to communicate using it.
Where would this fit in?

Regards
Johan

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