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I have a DS2450 that seems to be giving me troubles. It's measuring
voltage in the 0-2v range, but seems to fail very frequently (80+
percent read failures at times). Also, it is powered, but reports 0
for the power attribute. The first example below is a temp sensor, the
second is my unruly DS2450, both of which are externally powered.
[EMAIL PROTECTED]:~# cat /var/ow/uncached/28.F76689000000/power
;echo
1
[EMAIL PROTECTED]:~# cat /var/ow/uncached/20.4E8E0C000000/power ;echo
0
[EMAIL PROTECTED]:~#
Also when I try to cat the type of the DS2450, I get a bunch of garble:
[EMAIL PROTECTED]:~# cat /var/ow/uncached/20.4E8E0C000000/type
DS2450ð· addressÿÿÿÿ@crc8ÿÿÿÿ`dieÿÿÿÿfamilyÿÿÿÿfasttempÿÿÿÿÀidÿÿÿÿàlocatorÿÿÿÿpowerÿÿÿÿ
presentÿÿÿÿH
r_addressÿÿÿÿhr_idÿÿÿÿ r_locatorÿÿÿÿ¸
temperature12ÿÿÿÿX
temperatureÿÿÿÿà
temperature9ÿÿÿÿtemphighÿÿÿÿtemplowÿÿÿÿ¸trimÿÿÿÿà
trimblanketÿÿÿÿtrimvalidÿÿÿÿ(tytemperature12ÿÿÿÿX
temperature9ÿÿÿÿtemphighÿÿÿÿtemplowÿÿÿÿ¸y
p±ð·p±ð·à
trimblanketÿÿÿÿtrimvalidÿÿÿÿ(typeÿÿÿÿH.ÿÿÿÿh..ÿÿÿÿ
volthigh.Cÿÿÿÿ¸
volthigh.Dÿÿÿÿà
voltlow.ALLÿÿÿÿ voltlow.Aù
p±ð·p±ð· voltlow.BÿÿÿÿX voltlow.Cÿÿÿÿ
voltlow.Dÿÿÿÿ .ÿÿÿÿÀ..BUS_tcsetattr_errorsÿÿÿÿBUS_write_errorsÿÿÿÿ8BUS_write_interrupt_errorsÿÿÿÿ`
CRC16_errorsÿÿÿÿ
CRC16_triesÿÿÿÿ°
CRC8_errorsÿÿÿÿØ
CRC8_triesÿÿÿÿ
S2480_level_docheck_errorsÿÿÿÿ@DS2480_read_fd_issetÿÿÿÿhDS2480_read_nullÿÿÿÿDS2480_read_readÿÿÿÿÀDS2480_send_cmd_errorsÿÿÿÿøDS2480_send_cmd_memcmp_errorsÿÿÿÿ0DS2480_sendback_cmd_errorsÿÿÿÿhDS2480_sendout_cmd_errorsÿÿÿÿ DS2480_sendout_data_errorsÿÿÿÿÐDS2480_write_interruptedÿÿÿNET_accept_errorsùp±ð·p±ð·àvolt2.Dÿÿÿÿ.ÿÿÿÿ
¡p±ð·p±ð·voltlow.BÿÿÿÿX
voltap±ð·p±ð·
voltlow.Dÿÿÿÿ .ÿÿÿÿÀ..
page.82ÿÿÿÿ
page.83ÿÿÿÿÀ
page.84ÿÿÿÿà
page.85ÿÿÿÿ
page.86ÿÿÿÿ
page.87ÿÿÿÿ@
page.88ÿÿÿÿ`
page.89ÿÿÿÿ
page.90ÿÿÿÿ
page.91ÿÿÿÿÀ
page.92ÿÿÿÿà
page.93ÿÿÿÿ
page.94ÿÿÿÿ
page.95ÿÿÿÿ@
page.96ÿÿÿÿ`
page.97ÿÿÿÿ
page.98ÿÿÿÿ
page.99ÿÿÿÿÀ
page.100ÿÿÿÿà
page.109ÿÿÿpage.110ÿÿÿÿpage.111ÿÿÿÿpage.112ÿÿÿÿpage.113ÿÿÿpage.114ÿÿÿÿpage.115ÿÿÿÿpage.116ÿÿÿÿpage.117ÿÿÿpage.118ÿÿÿÿpage.119ÿÿÿÿpage.120ÿÿÿÿpage.121ÿÿÿpage.122ÿÿÿÿpage.123ÿÿÿÿpage.124ÿÿÿÿpage.125ÿÿÿpage.126cat:
/var/ow/uncached/20.4E8E0C000000/type:
Numerical
result out of range
[EMAIL PROTECTED]:~#
Any Ideas why? All my temp sensors work just fine. I'm running
version 2.6p2 on an Ubuntu machine. Has there been any development on
the DS2450 in newer versions that it's worth upgrading to a recent
build? I'd rather not upgrade my [generally] working environment
unless I know there's been a change to warrant it :)
-Scott
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