Dr_Doggy
Well-Known Member
I recently watched this:
and they say in the first section that most of these devices use ARM and linux. and are accessing them via uart ports
this brings some question though,
1)if Linux is able to run on a arm device, then does that must mean that these chips are big enough for a whole os? it seems like overkill to have a whole os running a fridge.
2) Also it seems like they are just using the uart port for dump & cmd info as oppose to ICSP?
3) does this mean that if I get to the uart port im just calling pre programmed instructions?
4) what exactly is jail breaking then, and what good will accessing uart do me, am i able to use/modify their header/c files for myown code, or do i still need to start from scratch if i want to reprogram device? ie simple things like adding a line to change ferinheit to celcius.
5) also this is for educational purposes for now, but is doing this stuff illegal?
and they say in the first section that most of these devices use ARM and linux. and are accessing them via uart ports
this brings some question though,
1)if Linux is able to run on a arm device, then does that must mean that these chips are big enough for a whole os? it seems like overkill to have a whole os running a fridge.
2) Also it seems like they are just using the uart port for dump & cmd info as oppose to ICSP?
3) does this mean that if I get to the uart port im just calling pre programmed instructions?
4) what exactly is jail breaking then, and what good will accessing uart do me, am i able to use/modify their header/c files for myown code, or do i still need to start from scratch if i want to reprogram device? ie simple things like adding a line to change ferinheit to celcius.
5) also this is for educational purposes for now, but is doing this stuff illegal?