Can anyone tell me the main files i need to work on to just get the cam to boot, i have been reading, but i feel like im doing it wrong, just want to see it finally boot so i feel like im on the right track, so far when i compile with the chdk-shell it compiles with errors of coarse,
If there are compile errors, then you need to fix them. You can comment stuff out to make it compile.
but i get the diskboot.bin i set to lock on card and it just makes cam not turn on and i have to take bat out to fix it.
You shouldn't get a diskboot.bin if there were compile errors. Chances are it's a leftover from something else you did.
See here for what you need to change http://chdk.wikia.com/wiki/Adding_support_for_a_new_camera
If you are having trouble booting, you can put loops that blink an LED at various points. See http://chdk.wikia.com/wiki/Debugging
Execution starts in loader/<camera>/entry.S
You can put the asm there to verify that your binary is correct. If that doesn't work, it usually means you haven't encoded diskboot correctly.
Hi, thanks for the responce, i was able to get the diskboot.bin by ingnoring errors, but since then I corrected them, and get no errors now, but no matter what i still cant get no boot with card in and i have to remove card at rest bat to get it to boot without chdk of coarse. I tried changing the Need_Encode from 1 through 6 and no change, this is all I see in entry.s
.section .entry
// Turn OFF SD Card power
// to support autostart. SX220 @FF06B2E0
LDR R3, =0xC022005C
MOV R2, #0x44
STR R2, [R3]
// looks like idle cycle is required for proper shutdown
MOV R3, #0x8000 // increased from 8000 to F0000 for extra delay for sx200 maybe could be 10000 ?
1:
SUB R3, R3, #1
CMP R3, #0
BNE 1b
// ordinary startup...
MOV SP, #0x1900
MOV R11, #0
B my_restart
I used the sx220 firmware to find out where this address would be in my firmware so the first address is what should be the address for the a3300is, or am I doing something wrong there? Is the sx220 the wrong cam I should be looking at, from what i saw, it seems pretty close to the a3300is??? Could it be something in the makefile.inc
#3223
PLATFORMID=12835
PLATFORMOS=dryos
MEMBASEADDR=0x1900
RESTARTSTART=0x50000
MEMISOSTART=0x133D38
ROMBASEADDR=0xffc00000
NEED_ENCODED_DISKBOOT=4
PLFLAGS=-DMEMBASEADDR=$(MEMBASEADDR) -DMEMISOSTART=$(MEMISOSTART) -DMEMISOSIZE=$(MEMISOSIZE)
PLFLAGS+=-DRESTARTSTART=$(RESTARTSTART)
#KEYSYS=d4a
I really didnt know what the addresses should be so I left them other then change the ROMBASE to mine.
The only other files I have touched were totally changing all addreses to my firmware addreses in boot.c and a few in the stubs_entry_2.s just all the ones that stuck out so far, especially the taskhook ones at the top.
Am I going about it all wrong? I have already read the adding support for new cam, thats what helped me, but there not enough detail in there really for a newbie like me i guess, sux cause I have time to do this, and learn fast but need more help to get going I guess.
