ubootenv 0.1.1

U-Boot environment setter and getter from the C library libubootenv

UBootEnv package

This package offers a Python implementation of the well-known fw_setenv and fw_getenv commands, based on the C library libubootenv.

Features

• Read and modify variables in the U-Boot environment
• Erase variable values
• Shadow writing to minimize write cycles

Usage

from ubootenv import UBootEnv

uenv = UBootEnv()
# Or specify a custom config path
uenv = UBootEnv("/etc/fw_env.config")

uenv.open()
var = uenv.get("foo")
print(var) # => None

uenv.set("foo", "bar")
var = uenv.get("foo")
print(var) # => b'bar'

# Use shadow writing, get method returns the shadow value
uenv.shadow("foo", "foo")
var = uenv.get("foo")
print(var) # => b'foo'

# Commit shadow values to disk
uenv.store()
uenv.close()