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Indi support for Meade LS (Autostar III) series

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Replied by Tarif Santo on topic Indi support for Meade LS (Autostar III) series

Hi Jochym!
Many thanks for your help. I really am interested to control this telescope under linux Kstars. I am primarily a Windows user, but have 3-4 months experience of using linux ubuntu. I have Raspberry pi3 loaded ubuntu mate 16.04LTS, installed kstars-bleeding. I have connected the telescope in the windows8.1 machine and ran Cartes de ciel planetarium software and used usb analyzer to monitor the telescope port. Please download the USBlyzer software capture log from this google drive link:

drive.google.com/file/d/0ByntE7ZqdSzoTTZ...WDg/view?usp=sharing

It's a html exported file. download and open it with browser.

Thanks.
7 years 10 months ago #8515
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

This is interesting - what operations have you performed during the monitoring? This will help me decipher the conversation.
7 years 10 months ago #8517
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Replied by Tarif Santo on topic Indi support for Meade LS (Autostar III) series

I open the USBlyzer software. Connected the telescope usb cable. Then it appears into the usb list of the software. I selected ETX LS Telescope at COM4 and select start capturing. Then the software started logging. I opened Cartes de ciel planetarium software, opened the control panel and press connect button to connect the telescope with the software. Then I give the telescope a command to slew to Alpha Aris star. Then stopped capturing and export the log.
7 years 10 months ago #8518
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

Good. Thanks. I was hoping for such short action. It looks like the part we need to decipher is actually quite short. Just a few initial commands.
Would it be possible for you to boot linux and get us output of

lsusb -v -d 04cc:0000

This will help identify the enpoints of the device
7 years 10 months ago #8519
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Replied by Tarif Santo on topic Indi support for Meade LS (Autostar III) series

Please find the attached screen shots.
7 years 10 months ago #8520
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

Thanks. To test my next idea we need to modify the driver a little.
Prepare your system to build a custom module.
You need to install:
linux-headers
build-essential
linux-source
(technically you do not need the last one, but it is the simplest way to get the files)

Extract the kernel source somewhere (we only need two files from there)
get the cdc-acm.c and dcd-acm.h files from the drivers/usb/class directory in the kernel tree and copy to some working directory (e.g. src/meade-serial/ in your home directory).
Put the following code in the file: Makefile in the same directory:
obj-m := cdc-acm.o
KDIR := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
default:
	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
There must be tab before $(MAKE) in last line.
next run make in this directory. This should build cdc-acm.ko module.
run:
sudo modprobe -r cdc-acm
sudo insmod cdc-acm.ko
and check the logs (it should load but fail exactly the same - we did not change anything yet). Get back here and I will tell you what to change next.
Good luck!
The following user(s) said Thank You: Evgeniy
Last edit: 7 years 10 months ago by Paweł. Reason: Typo
7 years 10 months ago #8522
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

Now for the modifications. They are actually simple.
Find the line in cdc-acm.c containig (around line 1760):
        { USB_DEVICE(0x2912, 0x0001), /* ATOL FPrint */
        .driver_info = CLEAR_HALT_CONDITIONS,
        },
and insert following code below:
        { USB_DEVICE(0x04cc, 0x0000), /* Meade LS telescope */
        .driver_info = NO_UNION_NORMAL,
        },
 
just before comment about Nokia S60.

Save the file run
make
again and then run:
sudo modprobe -r cdc-acm
sudo insmod cdc-acm.ko

Disconnect and connect the scope afterwards and check the logs.
Last edit: 7 years 10 months ago by Paweł. Reason: line numeber in the file
7 years 10 months ago #8524
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Replied by VTVL on topic Indi support for Meade LS (Autostar III) series

Hi,
Did the problem get solved ?
7 years 2 weeks ago #15897
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

No. s21xt never got back to me.
7 years 2 weeks ago #15903
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Replied by Jacek Patka on topic Indi support for Meade LS (Autostar III) series

I have MEADE LS 6 for 5 years. I will happily continue.
6 years 1 month ago #23775
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

Do you have the same problem?
5 years 10 months ago #26242
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Replied by Paweł on topic Indi support for Meade LS (Autostar III) series

I mean do you want to work on making the mount talking to indi?
This will involve compiling your own serial drivers for the kernel and at least moderate poking around the linux system. Are you up for this?
And we may end empty-handed for our efforts...
5 years 10 months ago #26243
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