Good work Shodan, did you hooked some function from dev. menu? Do you know how to recalc chksum or are you still bypassing it? Can you run some module from SD now? I'm forward when we will know how to call some GUI and buttons API calls to be able to write own app module
I know, still at the beginning...
Do you have some photos of K-30 body from inside? PCBs, chips, etc?
---------- Post added 04-26-14 at 04:11 AM ----------
Originally posted by lister6520 There is no obvious NMEA encoded as ASCII in the bit sequences but I haven;t ruled out it being buried in there somewhere.
Yes, it's some proprietary binary protocol and it's getting complicated but maybe Shodan would be able to reverse some code or enable logging on SD..
Originally posted by lister6520 Whereas this is a typical sequence with the GPS:
<-+_-+-+_00000000_-+_-+_000000000_-+4C50_C0-+-+4C14_C036FF007F-+>
The main content of the message being the C036FF007F in this example.
Hm, it's quite short message to contain lat, lon, alt, azimuth, sat.list...
Please can you trap some more messages and wait until GPS got fix? Then we can compare early messages without valit pos. and later with fix. I would expect zeros first in lat/lon that will change when fix so it would be visible where are they located. Also I could try to replay some sequence via AVR MCU if it will be recognized by cam. Do you think that GPS module only transmit, no receive?
Originally posted by lister6520 In addition there is occasionally a longer ,essage such as this one:
<000000300000000000000000000000036FF30DF800000000000018060FF8000007F80E6FFC07F80CC7F9980F9FFFFE07F800000F7-+-+4C14_C036FF006D-+>
I'm not sure how often it occurs but it seems somewhat irregular.
How much often?
Originally posted by lister6520 On another note I think I figured out why the extension cables cause problems and also why some third party flashes can be unreliable. It is just a silly 'mechanical' problem regarding the way the ground terminal connects and black paint on the camera hotshoe bracket.
Yes I have some problems when contacting a scope gnd crocodile to it...