SX100IS stuck in Playback mode :(

[mrdelayer]

I'm a bit of a newb to the CHDK world, so excuse me if this is a dumb question, but... I just got an SX100IS running 1.00C, onto which I promptly loaded the latest allbest build of CHDK (#51-442 built 20080712 21:33:48). After properly preparing my SD card (formatted, made bootable, extracted the CHDK ZIP, and locked), I inserted it and switched on the camera, only to find it will only allow me to use playback mode. If I attempt to switch to record mode, the camera powers itself off. What am I doing wrong? :[

[mrdelayer]

You know what, I just figured it out. I hit the shutter a half-press and into record mode it went. Feel free to lock this thread, or keep it around for others to learn from my stupidity.

[cybercom]

Since you figured it out, I don't see much "stupidity" in evidence...!!

[toinech]

Since you figured it out, I don't see much "stupidity" in evidence...!!

Have you tried a shoot half auto start script?

[ewavr]

Well, here is test version - http://ewavr.nm.ru/chdk/for_test/allbest-sx100is-100c-51.zip , which allow turn SX100IS on in both record and playback modes (based on G7 sources).

[Hacki]

Sorry ewavr, doesnt work.

Reminds me of the behaviour which occured when testing multi partition support.. Blue LED flashes, cam dead.

[ewavr]

In russian forum one man says that this works as expected ... Mystery....
How about latest CHDK autobuild, it works?

[Hacki]

Yes, autobuild works.

I just tested your build on a freshly formatted SD card, just to make sure it has nothing to do with some files on my card, but still - doesnt work.

[ewavr]

Sencond man from russian forum wrote, that camera turn on normally, if power (or playback) button hold more tnan one second.

Well, I make new test version (the same link) - maybe camera can be turn on faster (no feedback yet in russian forum).

[Hacki]

Sencond man from russian forum wrote, that camera turn on normally, if power (or playback) button hold more tnan one second.

Yes, that works. But even with your new build i need to hold the buttons for at least a second.   

[ewavr]

But even with your new build i need to hold the buttons for at least a second.   

 

My last attempt here. If it not works properly, I stop my work on this.

[PhyrePhoX]

damn:

An Error Has Occurred!
Sorry, you can't repeat a karma action without waiting 10 hours.

[Hacki]

My last attempt here. If it not works properly, I stop my work on this.

Thats sad, as it still doesnt work with just pressing the power/play button short.

[PhyrePhoX]

ewavr perhaps you can post a diff of the things you tried so maybe others know where to have a look and maybe find out for themselves?

[ewavr]

ewavr perhaps you can post a diff of the things you tried so maybe others know where to have a look and maybe find out for themselves?

I wrote about this here.

So, in file loader/sx100is/resetcode/main.c line 94 can be commented-out:
                        "LDR     R0, =0x12345678\n"
                        "MOV     R1, #0x40000000\n"
                  //    "STR     R0, [R1,#0xFFC]\n"     <-------------

Look also to G7 loader: loader/g7/resetcode/main.c:

   "MOV     R3, #0xFF0\n"
   "LDR     R1, =0x12345678\n"
   "ADD     R3, R3, #0x4000000C\n"

   "LDR     R2, =0xC0220204\n"    //  power
   "LDR     R2, [R2]\n"           //  button
   "AND     R2, #0x10000\n"       //  is
   "CMP     R2, #0\n"             //  pressed?

   "STREQ   R1, [R3]\n"           //  if not, store value