py: Start implementing "struct" module.
Only calcsize() and unpack() functions provided so far, for little-endian
byte order. Format strings don't support repition spec (like "2b3i").
Unfortunately, dealing with all the various binary type sizes and alignments
will lead to quite a bloated "binary" helper functions - if optimizing for
speed. Need to think if using dynamic parametrized algos makes more sense.
diff --git a/py/binary.h b/py/binary.h
index 0bd6ad1..d6bab14 100644
--- a/py/binary.h
+++ b/py/binary.h
@@ -4,4 +4,5 @@
int mp_binary_get_size(char typecode);
mp_obj_t mp_binary_get_val(char typecode, void *p, int index);
+mp_obj_t mp_binary_get_val_unaligned_le(char typecode, byte **ptr);
void mp_binary_set_val(char typecode, void *p, int index, mp_obj_t val_in);