I inserted main loop execution speed formula
which is based on TAR counter.
Question:
I have no idea why same software with same external envirrionmet
has loop execution time from 250us upto 70ms. I thought initially conditional
breaks, but I am not able to catch similar results!
My software is using USART so 70ms doesn't allow to read
anything from usart ( speed 9600 need 1ms execution time
to read each character in polling mode).
I also noticed, that break withing WDT timer interrupt
doesn't modify __spd variable. Why? Is it possible
that main loop is not executed !?
.comm __spd,4
CheckSpeed:
mov &TAR, r15
mov #__spd,r13
mov @r13,r14
mov r15,0(r13)
sub r14,r15
jc .Lcnt
inv r15
inc r15
.Lcnt:
cmp 2(r13),r15
jge .Lgtr
ret
.Lgtr:
mov r15,2(r13)
ret
--
Pozdrowienia
Robert Seczkowski
[email protected]
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