brentru / 32to328ptranslator Goto Github PK

while this does allow programs to compile successfully it does not assist in the translation of bits inside of registers. for example

ldi R16,0x0D
out TCCR0,R16

will translate to
ldi R16,0x0D
out TCCR0A,R16

unfortunately this wont work, for several reasons.

the above code would be better written as

LDI R16, (1<<WGM01) | (5 << CS00)
out TCCR0, R16

but in the 328p architecture WGM01 is not in TCCR0A it is in TCCR0B.

a fully functional converter or a student who should be doing the ECE263 HW, would know this and split the command into two load statements
LDI R16, (5<<CS00)
LDI R17, (1<<WGM01)

Thanks for looking into this,
Professor Viall

when converting between M32 and M328p assembly code it is important to realize that registers can change absolute position. this may move some registers from IO space to extended IO space. this means that some registers can no longer use the OUT/IN addressing modes and must instead use LDS/STS addressing modes.

this converter does not take that into account.