Move execution of main from boot.py to apps/home/main.py

[Giannie]

As suggested in #71, execution moved so that it does not get overwritten in a full reset

[mattbrejza]

Did you intend the app itself to call this if it wants the RAM, or for the app loader to do this for all apps? The main advantage of the former is that the wifi is not disconnected, and its a bit quicker.

If we do decide to do the former, the following will need to be added to invoke a reset and run:

if stm.mem8[0x40002850] == 0:   # this battery backed RAM section is set to 0 when the name screen runs
    with open('main.json', 'w') as f:
        f.write('{"main":"apps/app_library/main.py"}')
    stm.mem8[0x40002850] = 2    #set this address to != 0 so this if statement doesnt run next time
    pyb.hard_reset()

[Giannie]

Currently I've been splitting off the apps into a main.py which writes the config and a run.py that is the actual worker script. So main.py would be moved to run.py and the new main.py would write:

{"main":"apps/app_library/run.py"}

Your solution is more elegant though.

[mattbrejza]

Ive taken your code into this branch and integrated it, it just needs testing now.

https://github.com/emfcamp/Mk3-Firmware/compare/optional-reset-onrun?expand=1