Hi!
I'm sorry for bothering but I'm starting pulling my hair on this problem
I have...
I tried to search the mailing lists and elsewhere but I'm unable to find
any relevant information...
The goal is to make owfs work with the kernel w1-gpio-master driver.
I'm trying to setup the owfs on an embedded board - really a "router" -
netgear wgt634u - a mips (LE) based machine using the kernel w1-gpio
master driver and a spare gpio pin.
The software (os) used is OpenWrt trunk r23070 (build from scratch) with
kernel 2.6.34.5.
Linux WGT634U 2.6.34.5 #1 Wed Oct 13 16:10:34 CEST 2010 mips GNU/Linux
The W1 subsystem is actually working good.
After loading all the required modules:
fuse 49168 0
w1_gpio 752 0
w1_gpio_custom 864 0
wire 17584 1 w1_gpio
cn 4336 1 wire
nfnetlink 1712 0
Netfilter messages via NETLINK v0.30.
Driver for 1-wire Dallas network protocol.
Custom GPIO-based W1 driver version 0.1.1
w1_master_driver w1 bus master: Family 10 for 10.00080198f8e6.d8 is not
registered.
I can see the w1 bus and the attached DS18S20 slave:
r...@wgt634u:~# ls /sys/bus/w1/
devices drivers drivers_autoprobe
drivers_probe uevent
r...@wgt634u:~# ls /sys/bus/w1/devices/
10-00080198f8e6 w1 bus master
If I also load the kernel w1-thermal driver I can see the w1 system is
actually working as expected. I can read the temperature from the sensor:
r...@wgt634u:~# ls /sys/bus/w1/devices/10-00080198f8e6/
driver id name subsystem uevent w1_slave
r...@wgt634u:~# cat /sys/bus/w1/devices/10-00080198f8e6/w1_slave
30 00 4b 46 ff ff 09 10 12 : crc=12 YES
30 00 4b 46 ff ff 09 10 12 t=24187
Other than for testing the kernel w1-slave-thermal driver *is not
loaded*, just the w1-gpio master driver is.
I'm using the latest owfs sources:
r...@wgt634u:~# owfs -V
owfs version:
2.8p2
libow version:
2.8p2
So, to the problem!
I'm unable to make owfs/owserver/owhttps to "work/talk" with the w1
kernel driver.
After starting the owfs/owserver it "hungs" for some reason. Here is the
debug output:
r...@wgt634u:~# owserver --w1 --debug -p 4000
CALL: ow_parsename.c:FS_ParsedName_anywhere(90) path=[]
DEBUG: owlib.c:SetupTemperatureLimits(79) Globals temp limits 0C 100C
(for simulated adapters)
DEBUG: owserver.c:main(152) main_threadid = 715849728
DEBUG: ow_w1_list.c:w1_list_masters(54) Sending w1 bus master list
message
DEBUG: ow_w1_send.c:W1_send_msg(119) Netlink send -----------------
NLMSGHDR: len=48 type=3 (NLMSG_DONE) flags=0 seq=0|1 pid=880
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=0|1 ack=1 len=12 flags=0
W1_NETLINK_MSG: type=6 (W1_LIST_MASTERS) len=0 id=0
Byte buffer Data, length=0
<>
DEBUG: ow_w1_dispatch.c:W1_Dispatch(125) Dispatch loop
DEBUG: ow_w1_parse.c:Netlink_Parse_Get(114) Wait to peek at message
DEBUG: ow_w1_parse.c:Netlink_Parse_Get(122) Pre-parse header: 16
bytes len=52 type=3 seq=0|1 pid=0
DEBUG: ow_w1_parse.c:Netlink_Parse_Get(144) Netlink read
-----------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=0 seq=0|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=0|1 ack=0 len=16 flags=0
W1_NETLINK_MSG: type=6 (W1_LIST_MASTERS) len=4 id=65544
Byte buffer Data, length=4
--000: 01 00 00CONNECT: ow_zero.c:ZeroConf_Announce(144) Zeroconf and/or
Multithreading are not enabled
00
<....>
DEBUG: ow_w1_dispatch.c:Dispatch_Packet(92) Sending this packet to
root bus
DEBUG: ow_w1_dispatch.c:W1_Dispatch(125) Dispatch loop
DEBUG: ow_w1_parse.c:Netlink_Parse_Get(114) Wait to peek at message
DEBUG: ow_w1_list.c:w1_parse_master_list(64) W1 List 1 masters
DEBUG: ow_w1_parse.c:Netlink_Parse_Get(122) Pre-parse header: 16
bytes len=48 type=3 seq=0|1 pid=0
It seems to me the owfs is somehow having problems communicating with
the kernel w1 driver.
I have no more ideas on what to try/what to check.
Well, I'm really new to the owfs stuff but otherwise I have quite some
experience with OpenWrt, kernel modules/programming, 1-wire etc.
I took me some tries to figure out the OpenWrt W1 modules makefiles are
"broken" for proper support of the w1 kernel driver... it's missing the
"connector" suport by default.
I tried to compile the kernel & w1 modules "by hand" and to set all the
required options but the results were the same - no fun.
I did not have time to test this identical setup on another platforms
(mipe BE (atheros) boards, ixp425 boards, sheevaplugs). Also, I have not
tried some i2c/usb/serial w1-masters as I not have them handy right now
(basicaly just to test owfs is working) - but I really need it to work
with the kernel w1-gpio driver...
As far as I checked, owfs should work with the w1-gpio as I found quite
a lot of information about that, well, reference to other problems but
the "core" owfs <--> kernel-w1-gpio seems to be working/supported.
Any suggestion/information would be more than welcome.
Best regards,
M.Culibrk
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