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G7 X mark ii questions

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Offline banacheq

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G7 X mark ii questions
« on: 28 / August / 2018, 18:30:06 »
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I picked up a G7 X mark II recently and then found out it didn't have a CHDK port!  So, as I need an intervalometer that provides actual shots (the built-in one only creates a video), I'm willing to get the port started. Or at least try.

There doesn't seem to be a G7 X mark II porting thread yet, and there's no g7xm2 platform directory in the source trunk. 

Since the G7 X mark II uses the DIGIC 7 and the G7X uses the DIGIC 6, I assume there's a fair difference between the two. 

However, I still wonder if the G7X mark II is collapsed in with the G7X? Should they have the same porting thread and platform?  Or should I be creating a new thread and a new platform directory? If new, I noticed the uploaded firmware, which matches the one I dumped from my camera, is labeled 'g7xm2', so that would be the best name for a platform directory? 

Other thoughts/input? 

FYI, I've been using CHDK for a while on a few other models, but haven't done a port. Unix sys admin by day, so I can handle a rough compile. :)   

Thanks! 
Bob


search fodder: 
G7Xmk2 
G7X mark 2 
G7 X mark 2 
G7 X mk 2 
G7Xmkii 
G7Xmarkii 
G7X markii 
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Offline waterwingz

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Re: G7 X mark ii questions
« Reply #1 on: 28 / August / 2018, 22:38:28 »
Quote from: banacheq on 28 / August / 2018, 18:30:06
I'm willing to get the port started. Or at least try.
Deciding to start is always the first step. Good to see you taking this on.

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Since the G7 X mark II uses the DIGIC 7 and the G7X uses the DIGIC 6, I assume there's a fair difference between the two. 
A fair and almost certainly correct assumption.

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However, I still wonder if the G7X mark II is collapsed in with the G7X?
No.

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Should they have the same porting thread and platform?
No.

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Or should I be creating new thread and a new platform directory?
Yes.

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If new, I noticed the uploaded firmware, which matches the one I dumped from my camera, is labeled 'g7xm2', so that would be the best name for a platform directory? 
Pretty much your call - you do the port, you get some say on the naming.  Within limits of course.

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Unix sys admin by day, so I can handle a rough compile.
Filed under the category "famous last words" ...   ;)
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Offline banacheq

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Re: G7 X mark ii questions
« Reply #2 on: 29 / August / 2018, 16:44:18 »
Quote from: waterwingz on 28 / August / 2018, 22:38:28
Quote from: banacheq on 28 / August / 2018, 18:30:06
Unix sys admin by day, so I can handle a rough compile.
Filed under the category "famous last words" ...   ;)
Excellent answers!   :D Everything I needed to know.  I'll create g7xm2 for the platform for now, and eventually get the porting thread started.
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Offline srsa_4c

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Re: G7 X mark ii questions
« Reply #3 on: 29 / August / 2018, 16:58:20 »
A word of advice: CHDK binaries for DIGIC 6 are compiled with
-march=armv7-r (see arm_rules.inc).
This enables integer division instructions (udiv, sdiv) which are not supported by the ARM core(s) of DIGIC 7. You'll need to change that switch to something more appropriate.
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Offline banacheq

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Re: G7 X mark ii questions
« Reply #4 on: 13 / September / 2018, 16:24:33 »

Thanks!  Yeah, progress has been slow but looking at what's been going on with getting the firmware dump analyzed has been eye opening about the DIGIC 7 architecture.
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Offline boas61

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Re: G7 X mark ii questions
« Reply #5 on: 08 / November / 2018, 04:20:52 »
If you succeed with the port, I would be happy to help with testing the stability. Excited to see that you have taken up the challenge with this specific camera, thanks!
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Offline mrjrogegomez

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Re: G7 X mark ii questions
« Reply #6 on: 25 / October / 2020, 14:34:46 »
Hello, how have you been with this?
I already need to be able to use my mk2 as wecam :(
would it be better to buy another? :(
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Offline reyalp

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Re: G7 X mark ii questions
« Reply #7 on: 25 / October / 2020, 16:54:06 »
Quote from: mrjrogegomez on 25 / October / 2020, 14:34:46
Hello, how have you been with this?
I already need to be able to use my mk2 as wecam :(
You cannot uses G7 X mk 2 directly as a webcam.
You could use HDMI out with a video capture device, or chdkptp live view with something like OBS (https://obsproject.com/) capturing the window.
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would it be better to buy another? :(
If you can afford it and want something simple that just works out of the box, yes.

The G7 X mk3 is supported by Canon's own webcam utility: https://www.usa.canon.com/internet/portal/us/home/support/self-help-center/eos-webcam-utility/

Depending on your needs, a much cheaper basic HD webcam might also be a better option.
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