DIGIC 8 'PowerShot' development (M50, SX70, SX740)

[dfort]

Here's the obligatory "Hello, World!" shot of the M50 running firmware version 1.0.2.



Pull request submitted:

https://bitbucket.org/hudson/magic-lantern/pull-requests/955/m50-update-to-canon-firmware-version-102/diff

[lorenzo353]

Easy way is to use Qemu with a faked value in src/fw-signature.h and let it print what src/reboot.c expect to be
You can find it under "Canon CanonModelID Values" at https://sno.phy.queensu.ca/~phil/exiftool/TagNames/Canon.html or https://github.com/lclevy/libcraw2/blob/54caceb6aa3ec8aff1ae3102a498cb5438a75d74/docs/cameras.txt

Are they discovered from image metadata?

Also usually last digits are printed on serial console by the camera at firmware startup (ex. K412) and is reported under Model ID of the rom dumper.

you can use Exiftool to extract modelId from raw (CR2, CR3) or jpeg.

C:\Users\laurent>exiftool -CanonModelId d:\cr3_samples\m50\canon_eos_m50_02.jpg
Canon Model ID                  : EOS M50 / Kiss M

C:\Users\laurent>exiftool -CanonModelId d:\cr3_samples\250d\sample01.jpg
Canon Model ID                  : Unknown (0x80000436)

C:\Users\laurent>exiftool -CanonModelId d:\cr3_samples\r\447A0582.CR3
Canon Model ID                  : EOR R

for CR3 you can study parse_cr3.py
https://github.com/lclevy/canon_cr3

for CR2 see this poster : https://github.com/lclevy/libcraw2/blob/master/docs/cr2_poster.pdf,
it is stored in Makernote

you can also use craw2tool : https://github.com/lclevy/libcraw2/blob/master/user_manual.md

[dfort]

Thanks for the tips.

...the M50 hasn't been integrated into exiftool...

Oops, needed to update my exiftool. Now it works properly:

Code Select Expand

exiftool -CanonModelID IMG_0003.CR3
Canon Model ID                  : EOS M50 / Kiss M

I had an old version and the best it could so was this on jpeg files:

Code Select Expand

exiftool -CanonModelID IMG_0003.JPG
Canon Model ID                  : Unknown (0x412)

By the way, you can get the latest version of exiftool through the ML build scripts:

magic-lantern/modules/dual_iso/Makefile.cr2hdr

Code Select Expand

# Find the latest version of exiftool
EXIFTOOL_VERS=$(shell echo $$(curl -s https://www.sno.phy.queensu.ca/~phil/exiftool/ | grep -Em 1 'Download|Version' | grep -Eo '[0-9]+([.][0-9]+)?') | cut -d ' ' -f 1)
...
exiftool.tar.gz:
# Mac and Linux
wget http://www.sno.phy.queensu.ca/~phil/exiftool/Image-ExifTool-$(EXIFTOOL_VERS).tar.gz -O exiftool.tar.gz

exiftool.zip:
# Windows
wget http://www.sno.phy.queensu.ca/~phil/exiftool/exiftool-$(EXIFTOOL_VERS).zip -O exiftool.zip


That Makefile can also compile the latest dcraw and cr2dhr. Check it out. 

[aprofiti]

you can use Exiftool to extract modelId from raw (CR2, CR3) or jpeg.

Thanks, you just confirmed my initial thinking on how it was discovered for newer models

for CR2 see this poster : https://github.com/lclevy/libcraw2/blob/master/docs/cr2_poster.pdf,
it is stored in Makernote

Had a look at the poster and it helped me to understand better how offsets are handled inside the file format

you can also use craw2tool : https://github.com/lclevy/libcraw2/blob/master/user_manual.md

@lorenzo353 I also looked at your library when tried to manipulate exif tags in cr2 image, but if I don't remember wrong it's not minded to overwrite metadata.
Do you have any suggestions?

[ioman]

Hello. I just wanted to ask - how is the current state of ML port for M50? I would need bracketing function as I believe its not possible with the original firmware. I would also help contributer as I am developer, but I am javascript specialist and I think there is no use of that.

Thx.

[scrax]

Hello. I just wanted to ask - how is the current state of ML port for M50? I would need bracketing function as I believe its not possible with the original firmware. I would also help contributer as I am developer, but I am javascript specialist and I think there is no use of that.

Thx.

Welcome, you can start by clone repo, setup the toolchain and try to compile ML, that way you can follow development and make your tests, give feedback, make small changes (at first) and who knows that maybe the next big discoveries will come from your findings...

I'm thinking to get a M50 too, even if I was more interested in the RP but the new firmware signature freezed my hopes (for now)

[KelvinK]

@scrax Getting M50 now is a good choose! Ultra cheap, Viltrox SpeedBooster and with ML it will be a small beast.

[scrax]

@scrax Getting M50 now is a good choose! Ultra cheap, Viltrox SpeedBooster and with ML it will be a small beast.

Exactly, those are the reason mainly.

[ioman]

Ok, I will try to compile. I can compile and run QEMU even when I have not M50 yet right?

As for the cheapness.. do you think it could get cheaper maybe in 6 months? (canon about to release 2 new M models).
The current price is still to much for me. Now I have M10 and I need to go to M50 (big improvement. )

Regards,
Jakub

[scrax]

Ok, I will try to compile. I can compile and run QEMU even when I have not M50 yet right?

As for the cheapness.. do you think it could get cheaper maybe in 6 months? (canon about to release 2 new M models).
The current price is still to much for me. Now I have M10 and I need to go to M50 (big improvement. )

Regards,
Jakub

I was thinking you already had it; to run qemu you need a dump of the firmware from the camera you want to emulate

[ioman]

Ok, and there arent any dumps from someone who has the camera?

Regards,
Jakub

[Walter Schulz]

Not for sharing here. ML team considers public sharing/posting ROM dump contents violating Canon's IP rights. 2 options:
- Shout out and hope someone will reply by PN to a new member.
- Prepare a card with a ROM dumper and find a way to use it with an M50.

[ioman]

Ok, got it. In my local camera shop they allow me to test the M50 with my card anytime I come here so this might be ok.

Jakub

[ughhhml]

hello guys! I'm totally new here and I want to install ML on my M50. Can someone step by step explain this to me?

Thanks,
Jacob

[Walter Schulz]

hello guys! I'm totally new here

No, you are not. See reply #123.

and I want to install ML on my M50. Can someone step by step explain this to me?

See reply #124

[a1ex]

Offtopic stuff about the 'when' question moved over here.

TLDR - I'll share the code as soon as I'll clean it up and make sure it's compatible with other models (DIGIC 6/7/8, without breaking 4 and 5). However, that will happen after taking a short break (could be a month or two, maybe more, maybe less). Sorry, I have to.

[Greg]

Diaphora - IDA PRO plugin for comparing the firmware :
https://github.com/joxeankoret/diaphora

M50 1.0.1 vs 1.0.2

[Greg]

.

[Matt222Yt]

Not sure why but my canon m50 doesn't recognize it as a firmware. Is this an April fools joke?

[AaronG]

Hello! I am new in the forum. Despite being new user, I follow the forum for some time. I would like to know if the version of ML that is passed is compatible with 1.02 and if anyone can help me install it. Thank you!

[Walter Schulz]

What is "it"? And unsure what you mean by "doesn't recognize".

http://www.catb.org/~esr/faqs/smart-questions.html#beprecise

[Matt222Yt]

I meant that my canon m50 does not recognize the magic lantern firmware and it won't do a firmware update. I already put in the autoexec.bin file but the camera says "memory card containing firmware is required to update"

[andy kh]

From where you get the magic lantern firmware for m50?

[Walter Schulz]

What andy kh said and (again): http://www.catb.org/~esr/faqs/smart-questions.html#beprecise esp. the part about reproducing an error.

[Pinni3]

I meant that my canon m50 does not recognize the magic lantern firmware and it won't do a firmware update. I already put in the autoexec.bin file but the camera says "memory card containing firmware is required to update"

the basic is out in JUST THE START not full magic lantern.
It is not only the basic ml april fools you need.
If you look in the forums you will see post with the files you need.

you will need fir files
just the find function on the forum : BOOT_M50.FIR

Personaly i get the awnsers you get from others.
But the forum is for helping others?
I send you in the right direction but do know that ML is not in it full form.

i was also in the dark for the how to, but i invested time and surfed and searched the forum and found my awnsers. TY DFORT for the pointers (Again a hint for searching Matt222Yt)

Also please do not ask ET for full version. just my to cents. alex needs the break