I'm cc'ing back to the help list to keep a record of my mistakes...
I haven't yet worked with the MSP so don't take this as gospel.
Generally interrupts last until they are serviced, and the order
is system dependent, for which I have not seen any documentation.
So if a bunch of different things interrupt they will eventually
get attention. But if the processor is too slow, a second int
could come in from some repetitive process like a timer, and you
will miss the intervening events.
was that the question?
MS
Min Guo wrote:
Thanks. What happens if the same kind of interrupt are generated for
several times? I am not sure, if I understand correctly, MSP430 have a
register for each kind of interrupt. If more than one interrupts of
the same type are generated, will some be lost?
On 8/7/07, Michael Schippling <[EMAIL PROTECTED]> wrote:
It means that no interrupts are serviced until they are enabled again.
You probably don't miss any, unless you overrun due to blocking for too long.
See my last breathless post on this:
https://mail.millennium.berkeley.edu/pipermail/tinyos-help/2007-July/027039.html
and search for "interrupt" on this list for more...
MS
Min Guo wrote:
What is the meaning of "interrupts are disabled"?
Interrupts are disabled when using atomic sections:
atomic {
...
}
On the MSP430 micro controller, does this mean the interrupts will be
delayed after the atomic section, or simply be discarded?
The same question for maskable interrupts: while a maskable interrupt
handler is under execution, a new maskable interrupt comes - in this
case, this new interrupt will be "disabled". Does this mean the new
interrupt be discarded or delayed?
In what case will an interrupt be lost?
Thanks a lot!
Min
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