ELPH 340 (IXUS 265)

d27_

Ok, I think I managed to get DISKBOOT.BIN loading using the bootable SD card method (http://chdk.wikia.com/wiki/Bootable_SD_card#Bootable_SD_Card_Method). When I put the card in the camera and switch it on nothing happens. I then need to take out the battery & SD card before I can switch it on again. Does that mean DISKBOOT.BIN was loaded and the camera hangs.

The next step is to get some LEDs flashing?

adong

Last time I tried with my ixus 160 it did not work, and I'm pretty sure I got the right keys and all.

srsa_4c

adong
Last time I tried with my ixus 160 it did not work, and I'm pretty sure I got the right keys and all.

Thanks, found the bug in fi2enc, fixed it in trunk.

d27_
Does that mean DISKBOOT.BIN was loaded and the camera hangs.

Yes. (Check if you're using the correct dancingbits encoding, to be sure.)

The next step is to get some LEDs flashing?

Yes. See debug_led() here for DIGIC 4+ compatible LED control. You can find LED addresses in stubs_entry.S.
Once you get CHDK to run (and display on the screen), you'll need to find most buttons manually as the sigfinder's results are bogus on DryOS r54+ cams.

d27_

Thanks! I updated the code and using the firmware load method now works!

I also managed to get the front green LED blinking using debug_pisca_led() from https://www.assembla.com/spaces/chdk/subversion/source/HEAD/trunk/loader/sx530hs/main.c

I'm not sure where to go from here? I only have the bare minimum in platform/isux260_elph340hs/ that was required to compile. Should I copy files from the ixus160_elph160 port or from the sx530hs port or should I use code_gen?

reyalp

d27_
I'm not sure where to go from here? I only have the bare minimum in platform/isux260_elph340hs/ that was required to compile. Should I copy files from the ixus160_elph160 port or from the sx530hs port or should I use code_gen?

You should use code-gen, but the code_gen.txt files for those ports may be a useful example.

Generally it's a good idea to get the spytask (responsible for much of CHDK UI) and physw_task (aka kbd_task) running before you worry about the other hooks.

fe50

fe50
Added the
[list]
[li]IXUS 265 / ELPH 340 1.00C[/li]
[/list]
full 32MB dump by d27_ from this forum post to the CHDK P&S FW dumps repository.

reyalp

Moved thread to development section.

d27_

Ok, I managed to get some tasks running and some leds blinking after calls to spytask and taskcreatePhySw, but then the camera just does and powers on normally when I press the power button. I've commented out some stuff, so I'm not sure if that may we causing the problems?

I'm attaching the platform directory with my work to date, I'm not sure if there is a better way of sharing the code? At what point should it be added to SVN?

ps. I'm using codegen, although I added LED debugging manually

ixus265_elph340.7z

39.87KB

srsa_4c

d27_
but then the camera just does and powers on normally when I press the power button.

Can you rephrase this and describe more precisely what's happening? Which method are you using to start CHDK (diskboot or firmware update)?

I'm attaching the platform directory with my work to date, I'm not sure if there is a better way of sharing the code?

You could register on assembla and make a development repository.

At what point should it be added to SVN?

It should be a bit more mature 😀 and contain less unchanged copy&pasted files.

edit:
If the camera is crashing and CHDK isn't usable yet, you can use this Canon Basic script to retrieve the romlog: http://chdk.wikia.com/wiki/Canon_Basic/Scripts/Romlog

d27_

srsa_4c
Can you rephrase this and describe more precisely what's happening? Which method are you using to start CHDK (diskboot or firmware update)?

Sorry, that was a typo. Meant to say the camera dies. I'm loading CHDK using the firmware update method. I've put 5 LED flashes when booting start & then 3 quick LED flashes after the boot sequence finishes in boot.c. It seems like the camera makes it all the way through - I see the LED blinking 8 times, but nothing appears on the screen and it just seems to be powered off like normal. If I push the power button it will turn back on and function normally and if I push the play button I can load CHDK again using the firmware upgrade method (with the same result).

I'll try the Romlog, thanks!

waterwingz

d27_
I've put 5 LED flashes when booting start & then 3 quick LED flashes after the boot sequence finishes in boot.c. It seems like the camera makes it all the way through - I see the LED blinking 8 times, but nothing appears on the screen and it just seems to be powered off like normal.

Hmmm .. earlier you said :

d27_
Ok, I managed to get some tasks running and some leds blinking after calls to spytask and taskcreatePhySw,

but if I now understand you, what you meant is that you got past the start for spy task and keyboard task in boot.c but you have never actually seen the camera stay running long enough for them to do anything ( i.e. you are not cleanly making it out of boot.c ?)

d27_

Yes, that sounds about right.

Here is the Romlog that I get

ROMLOG.TXT

629b

waterwingz

d27_
Yes, that sounds about right.

What happens if you modify boot.c so that it mimics a normal camera startup ( i.e. you use the exact code from the firmware) and does not hijack any tasks or create any new ones? If everything is correct, it should just start the camera normally (maybe flashing some LED's so you know it's actually there).

Once you get to that step, start switching over to the CHDK hijacks one by one to narrow down the problem?

srsa_4c

sub_FF02BC5C_my is cut short in boot.c, the last instruction of the original function is @ 0xff02bccc. Also, startupchecks is in sub_FF06E0EC. Please modify code_gen.txt and re-generate boot.c . (Did not look further, there may be other issues.)

d27_

I managed to get camera to boot normally using just the code copied from firmware without any changes. I could take photos, etc. After this I tried putting back spytask - this caused the camera to start up and then fail on an exception after a few seconds. I'll attach the Romlog.

I also tried putting back the CreateTask patch, but this caused camera to hang when loading CHDK. What is the CreateTask patch supposed to do?

Thanks
d

ROMLOG.TXT

3.04KB

srsa_4c

d27_
After this I tried putting back spytask - this caused the camera to start up and then fail on an exception after a few seconds. I'll attach the Romlog.

Do you have the file "main.bin.dump" for the build that crashed right before you retrieved the romlog? You can find it in the platform/(camera)/sub/(fw)/ directory after build.
If not (and you changed the source since then), please make another build, copy main.bin.dump to a safe place, crash the cam with the new build and get a new romlog. Then, upload both files.

Note that I don't know what you changed since the last published source. Did you fix sub_FF02BC5C_my?

I also tried putting back the CreateTask patch, but this caused camera to hang when loading CHDK. What is the CreateTask patch supposed to do?

The CreateTask patch makes it possible to replace certain firmware tasks with our slightly modified versions. If the latest source is valid, the only replaced task is the InitFileModules task.

Hardware_Hacker

IXUS 265 Porting Attempt UpDate

Attached is a work-in progress for the IXUS 265-100a and IXUS 265-100c source code.
I do have several IXUS 265-100a cameras and will continue with this porting attempt

Also see here https://chdk.setepontos.com/d/12385/14

H-H

CHDK-265.rar

402.84KB

RG_Musicman

Thank You for working on this port 😀 I love this little camera but wow it would be amazing with CHDK 😎I only have 1 ELPH 340 currently, which I rely on, but if I can be of assistance for non-dangerous bug testing (or any bug testing if I get a second one) I'd be happy to help, altho I'm not a coder.
Cheers 😀

kamad

Hello,
Maybe You have compiled chdk for Ixus 265 HS for testing? I wanna run remote control by usb cable. Thx for help😀

Hardware_Hacker

kamad
Maybe You have compiled chdk for Ixus 265 HS for testing? I wanna run remote control by usb cable. Thx for help😀

There have been some minor updates and fixes for the Ixus 265-100a HS and Ixus 265-100c HS cameras porting attempt.
But as far as I can recall there is still more work to be done on these cameras.

( My Laptop only has versions back to 10-04-2016 which was then at trunk-4585, so will have to look in my archives.)

H-H

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