IXUS 100 IS (Europe) / PowerShot SD780 IS - Porting Thread

HarpoMa

There will be a dump shortly. I have some space I'm gonna start placing stuff for my attempts.

Mongomeri

For webspace you can upload file on www.megaupload.com

Great work!!! 😀

syrius

@HarpMa: Is it possible for you to upload your current version to the svn-server? Because I think the sd1200 I am working on is similar to sd780.

HarpoMa

I'll post it to my site but as for placing in svn i think it's too early. Doesn't get very far yet. But for reference I can make it available...

Harpo

HarpoMa

I do not suggest anyone other then a developer even look at this link. It will ONLY show your a logo.

{modified - removed URL since topic top now includes it}

Also, don't do a make clean. If you do then the stubs are likely going to break. I have not followed multiple guidelines on the making of this.

Jensemann

[Off-Topic - but I don't know where to direct this question. Promise to keep it short.]

After the last weekend and quite a lot of videos I realized that there is no auto-focus while taking a video. I couldn't belief this and called Canon today. Support employee #1 supposed my cam to be defective and advised me to send my camera to a local hardware contractor. Contractor #1 told me that this is totally normal. Called Canon again. Support employee #2 confirmed this. And stated, that this is true for many/most Canon cams. I still can't believe this.
(Meanwhile I found the Video Parameter: AF key that might be a workaround)

Can someone confirm, that this cam can't auto-focus while taking a video?

Jens

LILO

Yes.
It looks strange but it's true and is clearly stated in Users Manual.
AFAIK it can be fixed for other camera models with CHDK.

Jensemann

LILO
Yes.
It looks strange but it's true and is clearly stated in Users Manual.
AFAIK it can be fixed for other camera models with CHDK.

I read the manual before I bought the cam. Didn't get that.

Now keeping my fingers crossed a bit more, while waiting for a beta firmware,

Jens

syrius

With my SD1200IS udumper is not working, because the sequence of bytes 0000 0000 0000 0000 0000 0003 ... followed by adresses greater than MIN_ADDRESS (firmware jumps) has not been found:

#define MIN_ADDRESS     0xFF810000
...
for (i=0x1900;i<0xF0000;i+=4) {
	if ((*(unsigned int*)(i+0x34)==0) &&
		(*(unsigned int*)(i+0x3😎==0) &&
		(*(unsigned int*)(i+0x3C)==3) &&
		(*(unsigned int*)(i+0x4C)>MIN_ADDRESS) &&
		(*(unsigned int*)(i+0x50)>MIN_ADDRESS) )
	{
		...
	}
}

Any ideas modifying the udumper to work with SD780IS? Then I would like to try it on my SD1200IS.

HarpoMa

I never used the udumper for the SD780. It may help to take the FW for the sd780 and look for the pattern of bytes around the functions required to fopen/fwrite/fflush/fclose Not certain if you can perform them that early in the boot cycle but might be worth a try. Note of course that the SD1200 will NOT have the same position for the functions. Only the pattern might match.

For the SD780 I dumped the first firmware with the blinker program (ie serially blink the firmware to the LED) For the second FW dump (8M version) I used the fopen/fwrite/fflush/fclose.

syrius

Could you publish the code you where able to dump the 8MB firmware with fopen/fwrite/fflush/fclose? It will be a try for my SD1200IS.

HarpoMa

I think you misunderstand. My code for dumping came after I already had a version of it and therefore I simply made a certain key in CHDK dump the firmware with those function.....

fopen()
loop from 0xff800000
fwrite(a byte)
next loop
fflush()
fclose()

So if you can find those 4 functions and if the canon camera lets you actually run those at the time in udumper then you can strip out the functions in udumper and add the fwrite loop.

fyi - I have never found a function wr() in my canon fw that actually lets me call it like udumper wants...

Harpo

syrius

Have a look at https://chdk.setepontos.com/d/221/42 to see what jeff666's writes about the "wr"-function which stands for "WriteSDCard".

Meanwhile I verified, that my SD1200IS finds the signature, but calling the function do nothing. In the attachment you will find my full code compiling it with dryos.bat

HarpoMa

Interesting read. Explains why I never found a wr function. However, that said I still have never had any success with udumper. I blinked it out.

The code you provided looks very similar (exact maybe) with what I tried with udumper but also for me it fails to exit the wr() function.

Harpo

Thor

Still have my fingers crossed Harpo. Happy that you're still working on the 780. Good luck.

HarpoMa

Anyone have any suggestions for an ALTernate ALT key? The SD780 lacks a print key and this is the mapping. Any suggestions?

{ 0, KEY_UP , 0x00000008 },
{ 0, KEY_DOWN , 0x00000004 },
{ 0, KEY_LEFT , 0x00000001 },
{ 0, KEY_RIGHT , 0x00000002 },

{ 1, KEY_SET , 0x00004000 },
{ 1, KEY_PLAY , 0x00080000 },
{ 1, KEY_MENU , 0x00000800 },

{ 2, KEY_SHOOT_FULL , 0x00001001 },
{ 2, KEY_SHOOT_HALF , 0x00000001 },
{ 2, KEY_ZOOM_IN , 0x00004000 },
{ 2, KEY_ZOOM_OUT , 0x00002000 },
{ 2, KEY_PRINT , 0x00000040 }, //doesn't exist
{ 2, KEY_DISPLAY , 0x00000040 }, //swapped for print atm

I've thought about using display (as seen above) but there are canon menus that use DISP as an access key. I've thought about using a combo of KEY_SET + KEY_MENU but that pops up the Canon clock which kinda gets annoying.

Maybe KEY_ZOOM_IN/OUT + KEY_DISPLAY?

Thoughts on this?

Thanks,
Harpo

JustMe2

I got the German version (aka IXUS 100) with firmware 1.0.0.0. Nothing happens when having PS.FI2 in the root of my SD card.

Is there now an easy way to dump my firmware as well? How can I upgrade?

Doesn't the Wiki miss an entry of a accelerometer in the specifications (pics get rotated when rotating the camera).

wasabi1023

How about shoot-half + set?. I'm thinking if people have already set up the positioning and framing of their camera, this key combo should do nothing to change it (if they have AEL and AFL set). I don't recall any functions in the chdk menus that require shoot-half + set. Zoom+display seems a bit fiddly because you might accidentally change the zoom, which of course disengages AFL and AEL.

HarpoMa
Anyone have any suggestions for an ALTernate ALT key? The SD780 lacks a print key and this is the mapping. Any suggestions?

{ 0, KEY_UP , 0x00000008 },
{ 0, KEY_DOWN , 0x00000004 },
{ 0, KEY_LEFT , 0x00000001 },
{ 0, KEY_RIGHT , 0x00000002 },

{ 1, KEY_SET , 0x00004000 },
{ 1, KEY_PLAY , 0x00080000 },
{ 1, KEY_MENU , 0x00000800 },

{ 2, KEY_SHOOT_FULL , 0x00001001 },
{ 2, KEY_SHOOT_HALF , 0x00000001 },
{ 2, KEY_ZOOM_IN , 0x00004000 },
{ 2, KEY_ZOOM_OUT , 0x00002000 },
{ 2, KEY_PRINT , 0x00000040 }, //doesn't exist
{ 2, KEY_DISPLAY , 0x00000040 }, //swapped for print atm

I've thought about using display (as seen above) but there are canon menus that use DISP as an access key. I've thought about using a combo of KEY_SET + KEY_MENU but that pops up the Canon clock which kinda gets annoying.

Maybe KEY_ZOOM_IN/OUT + KEY_DISPLAY?

Thoughts on this?

Thanks,
Harpo

fe50

Maybe long-press MENU ?

HarpoMa

Place the PS.FI2 in the root of the card. Start with the PLAY button. Goto menu and select firmware upgrade. This will load the new PS.FI2 file.

And for the easy dump of FW nope.
And for the missing entry you are correct. I had forgotten about that (not that I put the specs on there) but it may be an interesting feature avenue in CHDK.

JustMe2
I got the German version (aka IXUS 100) with firmware 1.0.0.0. Nothing happens when having PS.FI2 in the root of my SD card.

Is there now an easy way to dump my firmware as well? How can I upgrade?

Doesn't the Wiki miss an entry of a accelerometer in the specifications (pics get rotated when rotating the camera).

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