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Frozen bytecode main.py
Posted: Wed Aug 15, 2018 6:47 am
by ajie_dirgantara
I am on production phase and would like to froze main.py and other modules into the micropython binary file, so after it burned into flash it will run directly. is this possible?
Re: Frozen bytecode main.py
Posted: Wed Aug 15, 2018 7:15 am
by Roberthh
The resepctive code is around
https://github.com/micropython/micropyt ... main.c#L68
There you see, that a file called _boot.py is run from flash, and that boot.py and main.py are run form the file system. You can either change the call for boot.py and main.py into pyexec_frozen_module(), or put the start of your modules into _boot.py.
Re: Frozen bytecode main.py
Posted: Thu Aug 16, 2018 8:00 am
by ajie_dirgantara
Roberthh wrote: ↑Wed Aug 15, 2018 7:15 am
The resepctive code is around
https://github.com/micropython/micropyt ... main.c#L68
There you see, that a file called _boot.py is run from flash, and that boot.py and main.py are run form the file system. You can either change the call for boot.py and main.py into pyexec_frozen_module(), or put the start of your modules into _boot.py.
Ok, so in short, after adding my main.py in "modules" directory, and then by modify the _boot.py by add "import main.py" line at below is enough?
Code: Select all
import gc
gc.threshold((gc.mem_free() + gc.mem_alloc()) // 4)
import uos
from flashbdev import bdev
try:
if bdev:
uos.mount(bdev, '/')
except OSError:
import inisetup
inisetup.setup()
gc.collect()
import main.py
Re: Frozen bytecode main.py
Posted: Thu Aug 16, 2018 8:15 am
by Roberthh
That should work. I only would not call that file main.py, to avoid conflicts. You can give is any other name. In addition you can have a main.py in your file system, which then might be empty. abd obviously, if your file is called "myfile.py", the statement should read:
import myfile
Re: Frozen bytecode main.py
Posted: Thu Aug 16, 2018 8:34 am
by ajie_dirgantara
ok, this is a bit out of topic, but can we also froze "webrepl_cfg.py", so it doesn't need to be configured one by one?
Re: Frozen bytecode main.py
Posted: Thu Aug 16, 2018 8:59 am
by Roberthh
you can freeze any python script, which is about to be imported. And you can simply try it.
Re: Frozen bytecode main.py
Posted: Sat Aug 18, 2018 8:22 am
by pythoncoder
The approach I have used is to have
_boot.py create
main.py if it doesn't exist. The new
main.py imports my module (
mqtt).
_boot.py:
Code: Select all
import gc
gc.threshold((gc.mem_free() + gc.mem_alloc()) // 4)
import uos
from flashbdev import bdev
try:
if bdev:
uos.mount(bdev, '/')
except OSError:
import inisetup
inisetup.setup()
try:
uos.stat('/main.py')
except OSError:
with open("/main.py", "w") as f:
f.write("""\
import mqtt
""")
gc.collect()