Prevent anyone can download my code over serial

[dserrano]

@robert-hh Hello Robert thanks for your replay.

How can I Embed your code as frozen bytecode?

[dserrano]

@combaindeft said in Prevent anyone can download my code over serial:

B) compile it and flash your WiPy with your own custom firmware

Hi there!

How can I compile and flash your WiPy code?

[johand]

@dserrano The instructions for compiling your own firmware (including your own frozen code) and encrypt it can be found here: https://github.com/pycom/pycom-micropython-sigfox

[Paul Thornton]

@johand said in Prevent anyone can download my code over serial:

@dserrano The instructions for compiling your own firmware (including your own frozen code) and encrypt it can be found here: https://github.com/pycom/pycom-micropython-sigfox

^this is likely the best way to help avoid the code being dumped.

[crumble]

@paul-thornton said in Prevent anyone can download my code over serial:

I tried to follow the instructions to build the firmware for a LOPY but esptools.py failed on

import serial

Adding pyserial with pip3 was not the solution. Running this on a hyper-v debian. Big plan was to compile on VM and use windows host for upload. Does the python module works only when a serial is present?

[johand]

@crumble I managed to build and encrypt the WiPy firmware (should be the same) using Windows Subsystem for Linux (https://docs.microsoft.com/en-us/windows/wsl/install-win10) running Ubuntu. I installed pyserial with "pip install pyserial". What is the error you get?

[crumble]

@johand

I used pip3 to install pyserial-3.4 But serial cannot be found

ImportError: No module named serial

[johand]

@crumble I am far from an Python expert, so just guessing... Could it be that you use pip3 instead of pip that I use (I think I got som problems trying to use Python 3)? What if you run "pip list", does pyserial show up as installed?

[crumble]

@johand

aaahhh, you are right. Micropython is python 3 but the build tool uses python 2. Totally forgot that this still exists on PCs

Thanks ;)

[svonbentzel]

@dserrano I am also interested in this howto ;-)