Keith Gudger wrote:
Thanks for the replies. I tried volatile, and it did not make any
difference.
I got the tool chain from the web, and compiled it myself. Is there
something wrong with the gcc version? Thanks. (I know that avr-libc and
binutils are acceptable versions.)
No, they're fine.
I have a macro defined:
#define WRITE_4BYTES(x, y) { CS_LOW \
*(BASE + ((y) ))) = (INT8U) (x); \
*(BASE + ((y + 1)))) = (INT8U) (x >> 8);\
CS_HIGH }
(where BASE is defined as an 8 bit pointer with a value 0x8000 in ext
ram and the macros CS_LOW and CS_HIGH are predefined to set a pin lo /
high).
get the following (for the atmega128):
42f2: 31 83 std Z+1, r19 ; 0x01
42f4: 20 83 st Z, r18
Keith, can you provide more context of the assembler output?
Thanks
--
Eric Weddington
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