I am looking at capt_seq.c, and it seems most part of it should come directly from the fw dump. Is this file supposed to be automatically generated from PRIMARY.BIN, or I should copy and paste from IDA?
Ok, I finished capt_seq.c. The biggest problem now is that the camera reports 'Card Locked' when it turns on, and I cannot take any picture no matter how hard I press the shutter. The key code for the shutter should be correct because the camera does respond to the shutter in Alt-mode (it starts the default script). One possibility is that my SD_READONLY_FLAG is not set correctly, but it seems to be 0x20000 for all cameras I've looked at. What else could be causing the card lock?
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