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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

ASI120MM on RPi3

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Replied by Andrew on topic ASI120MM on RPi3

Yes max USB output power on Pi is 1.2A if you have enabled it. Otherwise default is 0.6A. I can assume you already know this, but if not and for others; to enable the Pi to output up to 1.2A over USB, add this line to the /boot/config.txt file.
max_usb_current=1
It is necessary to power the Pi with a good power supply (>2.1A) if you do this. I have not had any problems with my ASI120MM, WiFi antenna, external flash drive and Canon USB interface all connected at once without a powered hub.
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7 years 3 weeks ago #14949

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Replied by Picard on topic ASI120MM on RPi3

Hi,

This option is only available for old rpi (not 3). The rpi 3 provide already 1.2A (and is the max of current you can use).
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7 years 3 weeks ago #14971

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Replied by Sergio on topic ASI120MM on RPi3

Thanks Andrew, very useful to know that your ASI works ok along with other devices, all connected directly to the USB ports of the RPi (begin the combined max current 1.2A). So I think I shouldn't have any power problems with my ASI, in my case.

As Christian has pointed, the 0.6/1.2A option switch of config.txt is for RPi2 and RPi B+: www.raspberrypi.org/help/faqs/#powerReqs

I'm performing a test with a fresh install of Ubuntu MATE 16.04.2 LTS (Jasem, is this is the version you have?). It comes with kernel 4.4.38-v7+ (which is also the one originally packaged in Raspbian Jessie, and was also giving the same problems, that's why I upgraded to 4.9.13-v7+). I compiled everything from source as I did on Jessie and began a Focus->Framing capture almost an hour and a half, for now it seems to work ok (even with the flooding of usb reset messages I'm getting in dmesg). I'll report back later.

Thanks to everyone.
7 years 3 weeks ago #14976

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Replied by Sergio on topic ASI120MM on RPi3

Well, yesterday it kept running until I stopped it, after more than 8 hours without issues. I'm waiting for clear skies to test again along with the other devices (main imager, focuser, mount). Meanwhile, I'll run a test again to see if this result is repeatable.
dmesg is flooded with usb reset messages, but according to Yang from ZWO ( zwoug.org/viewtopic.php?f=17&t=6901 ), they are "normal", as a reset is requested by the SDK on each exposure (but it seems to me some rough workaround).
I'm not sure about the differences between Raspbian Jessie and Ubuntu MATE regarding USB management... maybe different kernel compile options.
All in all, this is not reassuring at all, any update (kernel, sdk, etc) could break it.
7 years 3 weeks ago #15007

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Replied by Sergio on topic ASI120MM on RPi3

A last update, as I've repeated the test (Focus -> Framing) several times. results summarize as follows:

* exposure < 1 second: get frequent ASIGetExposureStatus failed (0) (every other exposure if I set 0.5 seconds) , first retry seems to work. I guess any momentary load on the system could lead to reach max retries and then failure. I guess this is not surprising as long as the SDK is resseting the USB communication on each exposure.
* exposure >= 1 second: no fails whatsoever for 8-9 hours on a freshly booted RPI. But in one test I did without rebooting before starting the Focus->Framing sequence, it "freezed" (no response to StartExposure, as described in the opening post) after 9 hours.

So these results may be considered just enough for guiding, provided that the RPi is booted before each night session. But also may be considered as enough reason to return the camera to the provider.

Unfortunately I didn't have yet the opportunity to perform an actual test guiding and imaging due to bad weather.
The following user(s) said Thank You: Jasem Mutlaq
7 years 2 weeks ago #15028

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Replied by Keith Cobby on topic ASI120MM on RPi3

FYI: my two Rpi 3 both default at 600mA so i had to reset the max_current value to 1 to enable 1.2a. Always worth checking.
Skywatcher 190MN - EQ6 Pro (with Belt Mod) - ASI1600MM-Cooled - ASI EFW7 - ASI120MM - WO f4 Guide Scope - Rigel nStep - KStars/Ekos - KDE - PixInsight
7 years 2 weeks ago #15054

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Replied by Sergio on topic ASI120MM on RPi3

It seems that max_usb_current=1 has no effect on RPi3, it is hard-wired to provide 1.2A max.
www.raspberrypi.org/forums/viewtopic.php?p=930695#p930695
www.raspberrypi.org/help/faqs/#powerReqs
Anyway I also ran a test with max_usb_current=1 before finding that information and got the same results as I reported on the opening post.
7 years 2 weeks ago #15056

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Replied by Andrew on topic ASI120MM on RPi3

I replaced the SDK manually to the most recent version 6.0110. See if that helps.
zwoasi.com/software/
7 years 2 weeks ago #15066

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Replied by Sergio on topic ASI120MM on RPi3

I compiled the driver from git, which already has SDK v0.6.0110 as Jasem commented in his commit (also checked by binary comparison).
Thanks.
7 years 2 weeks ago #15094

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Replied by Piero on topic ASI120MM on RPi3

Hi all,

I just bought an ASI120MM-S which I'd like to use on my Raspi3 running Raspbian stretch for guiding.
The camera seems to work rather well, even though I haven't tested it for a long continuous time.
What puzzles me is the slow download time of each image, even if I use very short exposure times (like 0.01s) I cannot get more than one image every 3-4 seconds.
Also, as sergiod already said, at every frame completion I see the "reset high-speed USB device" message in dmesg and, like sergiod, it's hard for me to consider it as normal.
What puzzles me even more is that if I use lin_guider, which doesn't use Indi but has its own ASI driver, the same camera on the same hardware is lightning fast! I can get up to 3-4 frames per second and no "reset high-speed USB device" message at all. And lin_guider uses the same libASI contained in SDK v0.6.

Is there anything I can do to improve the camera performance with Indi?

Thank you.
Piero
Last edit: 6 years 10 months ago by Piero.
6 years 10 months ago #16764

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Replied by Keith Cobby on topic ASI120MM on RPi3

What actually is the "reset high-speed USB" doing? Is it resetting the USB Traffic parameter to ASI default as a consequence of you setting something different in Ekos? Maybe choose Auto USB Traffic in the Indi Control Panel settings
Skywatcher 190MN - EQ6 Pro (with Belt Mod) - ASI1600MM-Cooled - ASI EFW7 - ASI120MM - WO f4 Guide Scope - Rigel nStep - KStars/Ekos - KDE - PixInsight
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6 years 10 months ago #16792

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Replied by Piero on topic ASI120MM on RPi3

Actually I'm not using Ekos as Indi client, but even with ccdciel and phd2 things are the same.
I've also tried Auto USB Traffic but nothing changed, unfortunately.
Thank you
Piero
6 years 10 months ago #16797

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