9 Feb
2010
9 Feb
'10
5:52 p.m.
On Feb 9, 2010, at 8:34 PM, Ethan Dicks wrote:
I myself have only ever programmed AVRs in C
(including older parts
that had a mere 2K of code space), but I've done some PIC and MCS51
assembler in the past 5 years. Not much point to it usually, though.
That much optimization is rarely needed in a part that has limited I/O
and very limited memory.
That's funny, I find that sort of optimization is required
*because* the parts have limited memory. ;) (not arguing about I/O
though)
On 8051 designs, I always code very low-level routines that will
be called a lot in assembler. Stuff like the low-level UART drivers
for maintaining serial output buffers and such. The rest I generally
do in C. I rarely write pure-C 8051 programs.
It wouldn't surprise me to learn that ARM
microcontrollers were
"impossible" to program in assembler. Workstations turned that corner
when they went from CISC to RISC - I know very, very few RISC
assembler programmers, but dozens who have done CISC assembly.
Absolutely. ARM is just plain difficult. Very interesting, but
difficult. I won't go there in any serious way...all C on ARM for me.
-Dave
--
Dave McGuire
Port Charlotte, FL