With caching of map lookups in the bytecode, frozen bytecode can still
work but must be stored in RAM, not ROM. This patch allows mpy-tool.py to
generate code that works with this optimisation, but it's not recommended
to use it on embedded targets (because of lack of RAM).
If sets are not enabled, set literals lead to SyntaxError during parsing,
so it requires feature_check. Set tests are skipped based on set_*.py
pattern.
Starting at esp.flash_user_start(), the reserved sectors are for general
purpose use, for example for native code generation. There is currently
one sector reserved as such.
The driver seems to be be enabling the pullup resistor in most places, but
not this one. Making this one little change allows onewire devices to be
used with no external pullup resistor.
This makes unix "uselect" compatible with baremetal "uselect". Previosuly,
unix version accepted file/socket objects, but internally converted that
to file descriptors, and that's what .poll() returned. To acheive new
behavior, file-like objects are stored internally in an array, in addition
to existing array of struct pollfd. This array is created only on first
case of file-like object being passed to .register(). If only raw fd's are
passed, there will be no additional memory used comparing to the original
implementation.