Rockbox Ports are now being developed for various digital audio players!
Great news!What to do next? Integrate the c200v2 into the Rockbox tree, so that we can use bootloaders, which are save and where we can use C code.It could well be that it's using a keyscan matrix. But it could also be direct connections. Note that e200v2/Fuze also have Right on C6.Oh, and we should bug linuxstb to edit mkamsboot to support c200v2.
Can you tell me where the experimental Rockbox code is? Or is it simply the latest version in trunk?
I might like to attempt this for the fun of it, even if my code is not used. However is there a proper way to do this, e.g. is there someone who is delegated to do this kind of thing?
I have a copy of the current version of mkamsboot, and it looks fairly straightforward (peels of laughter sound from around the world) to add some c200 code to detect the USB cable. Presumably I could mod that and test it even without anything else rockboxy being on the player.
One last question - is it possible that the other buttons are hooked up to GPIOC and I simply stuffed up the code when I was looking for them? Or in other words, is there a possibility that some other setting is interacting with the port that stopped the other pins working?
One even laster quesrion - Is it possible to dissassemble the OF (C200PA.BIN) using arm-elf-objdump?
Is it likely that some of the buttons have been wired to output pins on the IO ports, such that the button must be "energised" by setting a particular pin to output before it will be able to signal the input pin? this way the buttons would be hidden and much more difficult to locate? Has this happened before?
We actually have enough now for building a bootloader, so I wouldn't focus too much on this any more. Our bootloader will already have system initializations and hardware setup (kernel_init(), system_init()) that is already nicely implemented for the other AMS targets.
RockRabbit: I put up http://www.rockbox.org/tracker/task/9679 so that the c200v2 is integrated into the source. Note that most is guess work (which is fine for now), but we need to know the particular memory size.Please patch your c200v2 with a stock OF named "c200pt.bin", this will hopefully enable the diagnosis mode, in which the memory size is stated.Play around with my patch, but beware that it is completely untested. It may or may not brick (one of) your c200v2.It'll at least build a bootloader with loops after doing init stuff.I've made dualboot.S so that it boots the OF if USB is inserted or RIGHT is pressed. That's based on the information your findings.atomicpunk: Thanks again!
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