platforms/boards/pyboard/assembler directives
Defining inline data
data(size, d0, d1 .. dn) Put a set of data values into memory. The first argument specifies the size of each subsequent argument in bytes.
align(nBytes) Align the following instruction to an nBytes value. ARM instructions must be word-aligned, hence it's advisable, after a data directive, to issue align(2) before any subsequent code.