[Nut-upsuser] request - nutdrv_qx_megatec.c: update/fix the code for "new" UPS
Jim Klimov
jimklimov+nut at gmail.com
Thu Aug 18 18:49:20 BST 2022
I can best suppose so far that for one, printf in shell may differ from
that in C and from scanf for that matter. And I think OTOH that scanf can
signal an error if the formatting string does not match expected pattern.
Maybe this is what happens to reject the device, maybe some other fault.
Try finding where it parses that input to fall back treating `-.--` as zero
or something to mean "known-mussing"... Ideally just a lack of that reading
in dstate, in the end - e.g. no temperature field for this device.
On Tue, Aug 16, 2022, 15:24 Tomáš Thiemel <thiemel at centrum.cz> wrote:
> Hi Jim,
>
> I am afraid that the main problem is in '%.1f' in the "lookup table" when
> UPS returns "--.-" (string) instead of "12.3" (float):
>
>
> root at OpenWrt:~# printf '%.1f \n' "12.3"
>
> 12.3
>
> root at OpenWrt:~# printf '%.1f \n' "--.-"
>
> ash: invalid number '--.-'
>
> 0.0
>
>
> I checked source codes at
> https://github.com/networkupstools/nut/tree/master/drivers and all these
> protocols have similar "lookup table":
>
> - nutdrv_qx_zinto.c
>
> - nutdrv_qx_voltronic-qs.c
>
> - nutdrv_qx_q1.c
>
> - nutdrv_qx_mustek.c
>
> - nutdrv_qx_megatec.c
>
> - nutdrv_qx_megatec-old.c
>
> - nutdrv_qx_mecer.c
>
> - nutdrv_qx_hunnox.c
>
> - nutdrv_qx_bestups.c
>
>
> BTW - I already wrote some "basic" code in Python using PyUSB to read
> desired data from the UPS, but the communication with it is very very bad. Probably
> due to the bad the quality of the electronics in it. Sometimes it returns
> data with missing initial characters (missing first 8 bytes) so I have to
> re-read the status, sometimes the communication freezes completely so I
> have to power-cycle the USB port.
>
>
>
> Best regards / S pozdravem
>
>
>
> Tomáš Thiemel
>
> thiemel at centrum.cz
>
>
>
> ______________________________________________________________
> > Od: "Jim Klimov" <jimklimov+nut at gmail.com>
> > Komu: "Tomáš Thiemel" <thiemel at centrum.cz>
> > Datum: 16.08.2022 12:44
> > Předmět: Re: [Nut-upsuser] request - nutdrv_qx_megatec.c: update/fix the
> code for "new" UPS
> >
>
> > CC: <nut-upsuser at alioth-lists.debian.net>
> Ahoj,
> Just in case, did you check other subdrivers there? They all are for
> variants of Megatec Qx family, UPS vendors were creative with it...
> Jim
>
> On Tue, Aug 16, 2022, 03:46 Tomáš Thiemel via Nut-upsuser <
> nut-upsuser at alioth-lists.debian.net> wrote:
>
>> Hi.
>>
>> I bought new UPS which is not "supported", yet.
>>
>>
>>
>> Brand: Volt Polska
>>
>> Model: Micro 800
>>
>> have USB with Megatec protocol ("Q1<cr>")
>>
>> Data returned by UPS: *"(242.9 242.9 242.9 000 50.0 13.3 --.- 00001001"*
>>
>> Problem: data returned by UPS is not handled correctly by
>> nutdrv_qx/megatec driver, although the SW from
>> https://www.power-software-download.com/viewpower.html (JAVA) works fine.
>>
>>
>>
>> "ups.temperature" is defined as "%.1f" in the source code but my UPS
>> returns "--.-"
>>
>>
>> Debug info:
>>
>> root at patschkav-OpenWrt:~# /lib/nut/nutdrv_qx -DDDDDDDDDD -a ups -x
>> protocol=megatec
>>
>> Network UPS Tools - Generic Q* USB/Serial driver 0.28 (2.7.4)
>>
>> USB communication driver 0.33
>>
>> 0.000000 send_to_all: SETINFO driver.parameter.port "auto"
>>
>> 0.006788 send_to_all: SETINFO driver.parameter.vendorid "0665"
>>
>> 0.008047 send_to_all: SETINFO driver.parameter.productid "5161"
>>
>> 0.010655 send_to_all: SETINFO driver.parameter.protocol "megatec"
>>
>> 0.011858 debug level is '10'
>>
>> 0.014225 upsdrv_initups...
>>
>> 0.019924 Checking device (0665/5161) (001/014)
>>
>> 0.036693 - VendorID: 0665
>>
>> 0.036788 - ProductID: 5161
>>
>> 0.036819 - Manufacturer: unknown
>>
>> 0.036850 - Product:
>>
>> 0.036881 - Serial Number: unknown
>>
>> 0.036912 - Bus: 001
>>
>> 0.036942 - Device release number: 0002
>>
>> 0.036971 Trying to match device
>>
>> 0.037069 Device matches
>>
>> 0.037178 nut_usb_set_altinterface: skipped
>> usb_set_altinterface(udev, 0)
>>
>> 0.037262 send_to_all: SETINFO ups.vendorid "0665"
>>
>> 0.037317 send_to_all: SETINFO ups.productid "5161"
>>
>> 0.037361 Skipping protocol Voltronic 0.06
>>
>> 0.037399 Skipping protocol Voltronic-QS 0.07
>>
>> 0.037438 Skipping protocol Voltronic-QS-Hex 0.10
>>
>> 0.037477 Skipping protocol Mustek 0.07
>>
>> 0.037514 Skipping protocol Megatec/old 0.07
>>
>> 0.037551 Skipping protocol BestUPS 0.06
>>
>> 0.037589 Skipping protocol Mecer 0.07
>>
>> 0.052692 send: Q1
>>
>> 0.054678 read: timeout (0)
>>
>> 0.054842 qx_process_answer: short reply (input.voltage)
>>
>> 1.465747 send: Q1
>>
>> 1.494790 read [ 0]: (8 bytes) => 28 32 34 30 2e 38 20 32
>>
>> 1.526803 read [ 8]: (8 bytes) => 34 30 2e 38 20 32 34 30
>>
>> 1.558795 read [ 16]: (8 bytes) => 2e 38 20 30 30 30 20 35
>>
>> 1.590799 read [ 24]: (8 bytes) => 30 2e 32 20 31 33 2e 33
>>
>> 1.622797 read [ 32]: (8 bytes) => 20 2d 2d 2e 2d 20 30 30
>>
>> 1.654819 read [ 40]: (8 bytes) => 30 30 31 30 30 31 0d 00
>>
>> 1.654919 read: (240.8 240.8 240.8 000 50.2 13.3 --.- 00001001
>>
>> 1.655052 send_to_all: SETINFO input.voltage "240.8"
>>
>> 3.061834 send: I
>>
>> 3.094895 read [ 0]: (8 bytes) => 31 0d 00 00 00 00 00 00
>>
>> 3.094994 read: 1
>>
>> 3.095100 qx_process_answer: short reply (ups.firmware)
>>
>> 3.095161 send_to_all: DELINFO input.voltage
>>
>> 4.506937 send: Q1
>>
>> 5.509389 read: Operation timed out (-145)
>>
>> 5.509494 qx_process_answer: short reply (input.voltage)
>>
>> 5.509541 Skipping protocol Zinto 0.06
>>
>> 5.509578 Skipping protocol Q1 0.07
>>
>> 5.509608 Device not supported!
>>
>> 5.509638 Device not supported!
>> Can some skilled programmer fix the code in nutdrv_qx_megatec.c, please?
>> I'm just stupid sysadmin. :-(
>> Thank you very much.
>>
>>
>>
>> Best regards / S pozdravem
>>
>>
>>
>> Tomáš Thiemel
>>
>> thiemel at centrum.cz
>>
>>
>>
>> _______________________________________________
>> Nut-upsuser mailing list
>> Nut-upsuser at alioth-lists.debian.net
>> https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser
>
>
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